docs: add 0.5.4 release notes

- Make global and contextual Start/Stop toolbar buttons mutually exclusive in main window
- Relocate Add Downloads primary action buttons from top toolbar to standard bottom Action Bar
- Expand Download Properties window width for better readability and condense font sizes
- Wrap Advanced Transfer settings in a native DisclosureGroup to reduce scrolling
- Redesign Chunk Map with rounded corners, larger boxes, and system accent colors

.github/workflows/release.yml

@@ -21,7 +21,9 @@ jobs:
 
     steps:
       - name: Check out repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
+        with:
+          submodules: recursive
 
       - name: Resolve version
         id: version
@@ -40,6 +42,20 @@ jobs:
         run: |
           uname -a
           swift --version
+          xcodebuild -version
+          xcode-select -p
+          xcrun --sdk macosx --show-sdk-version
+
+      - name: Verify macOS 26 SDK
+        shell: bash
+        run: |
+          SDK_VERSION="$(xcrun --sdk macosx --show-sdk-version)"
+          SDK_MAJOR="${SDK_VERSION%%.*}"
+
+          if [[ "$SDK_MAJOR" != "26" ]]; then
+            echo "Expected macOS 26 SDK, got macOS $SDK_VERSION" >&2
+            exit 1
+          fi
 
       - name: Install dependencies
         run: brew install aria2 dylibbundler
@@ -54,6 +70,7 @@ jobs:
         run: |
           file build/Firelink.app/Contents/MacOS/Firelink
           lipo -archs build/Firelink.app/Contents/MacOS/Firelink | grep -qx arm64
+          codesign --verify --deep --strict build/Firelink.app
 
       - name: Create DMG
         env:
@@ -62,7 +79,7 @@ jobs:
         run: Scripts/create_dmg.sh
 
       - name: Upload workflow artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: Firelink-${{ steps.version.outputs.version }}-mac-arm64-dmg
           path: dist/*.dmg
@@ -73,8 +90,11 @@ jobs:
         env:
           GH_TOKEN: ${{ github.token }}
         run: |
+          VERSION="${GITHUB_REF_NAME#v}"
+          awk '/^## \['"$VERSION"'\]/{flag=1; next} /^## \[/{if(flag) exit} flag' CHANGELOG.md > release_notes.md
+          
           if gh release view "$GITHUB_REF_NAME" >/dev/null 2>&1; then
             gh release upload "$GITHUB_REF_NAME" dist/*.dmg --clobber
           else
-            gh release create "$GITHUB_REF_NAME" dist/*.dmg --generate-notes --verify-tag
+            gh release create "$GITHUB_REF_NAME" dist/*.dmg --notes-file release_notes.md --verify-tag
           fi

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "Extensions/Firefox"]
+	path = Extensions/Firefox
+	url = https://github.com/nimbold/Firelink-Extension.git

CHANGELOG.md

@@ -5,6 +5,119 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.5.4] - 2026-06-04
+
+### New features
+- Added direct double-click access to Download Properties for unfinished downloads.
+- Added a `make verify` command for local build and Firefox extension manifest checks.
+
+### Changes
+- Updated Firefox integration to probe the same local fallback ports used by the app.
+- Updated global speed limiting so changes apply to active downloads through `aria2` RPC.
+- Declared SwiftPM resources and added development fallbacks for app icons and Firefox extension copying.
+- Narrowed saved site-login matching so plain host patterns match exact hosts unless a wildcard is used.
+
+### Fixes
+- Fixed browser handoff failures when the default local extension port is unavailable.
+- Fixed dropped `Referer` headers from browser extension requests.
+- Fixed scheduler configurations that could be enabled without any runnable queue target.
+- Fixed unsafe file names from URLs, metadata responses, and manual property edits.
+- Fixed a possible duplicate-open glitch when double-clicking unfinished downloads.
+
+## [0.5.3] - 2026-06-04
+
+### New features
+- Added `ChunkMapView` to visualize active segmented downloads using `aria2` RPC with minimal performance overhead.
+- Added seamless drag-and-drop support for URLs and text files in the main window and dock icon.
+
+### Changes
+- Refactored all Settings panes to use standard macOS HIG `Form` and `.toolbar` layouts.
+- Updated the "Add Downloads" dialog to use native macOS `.toolbar` with integrated cancel actions.
+
+### Fixes
+- Fixed a DNS rebinding vulnerability by rigorously validating the `Host` header within the local extension server.
+- Fixed a potentially unbounded memory leak in the download console buffer by introducing a strict 512KB cap.
+- Fixed an intermittent UI hang during the `aria2c` version check by fully decoupling the process execution into a detached background task.
+
+## [0.5.2] - 2026-06-04
+
+### Fixes
+- Fixed the hit-testing area on Settings tabs so the entire tab frame is clickable, not just the text/icon.
+- Re-architected the Settings tab bar layout to perfectly distribute available horizontal space, ensuring symmetric right/left padding.
+
+## [0.5.1] - 2026-06-04
+
+### Changes
+- Added sleek SF Symbol icons to the Settings capsule tabs to improve visual scannability and modernize the interface.
+
+## [0.5.0] - 2026-06-04
+
+### New features
+- Added a dedicated Speed Limiter UI to the main sidebar for instant global bandwidth throttling.
+- Integrated Settings directly into the main application window instead of a separate macOS scene, paving the way for future Windows/Linux cross-platform parity.
+
+### Changes
+- Modernized Settings with a sleek horizontal tab bar layout.
+- Added persistent state retention across views (remembers the last visited settings tab and custom speed limits).
+- Compacted the README file to be more concise and user-friendly.
+
+### Fixes
+- Fixed a critical memory crash (`EXC_BAD_ACCESS`) inside the Download Table caused by ephemeral string sorting during active downloads.
+- Fixed sidebar layout glitches to prevent text overlap during scroll.
+
+## [0.4.3] - 2026-06-03
+
+### Changes
+- Refined About page UI and simplified the delete confirmation dialog.
+
+### Fixes
+- Optimized disk writes and UI state updates to significantly reduce main thread CPU usage and SSD wear during concurrent downloads and table resizing.
+
+## [0.4.2] - 2026-06-03
+
+### Features added
+- Added double-click to open completed files directly from the download table.
+- Added redownload functionality for completed or failed items.
+- Added 'Copy Address' context menu action.
+- Added a monochrome template tray icon loaded explicitly with precise dimensions.
+
+### Changes
+- Improved context menu organization and conditionally displayed actions based on download status.
+
+## [0.4.1] - 2026-06-03
+
+### Features added
+- Added app theming engine with Look and Feel settings.
+- Added Font Size, List Row Density, and Menu Bar Icon settings.
+- Added tray icon and context menu for main window and queues.
+- Added site logins integration directly into the Add Downloads window.
+
+### Changes
+- Updated the paste hint to use a visual Command icon.
+
+### Fixes
+- Resolved SwiftUI infinite layout freeze caused by MenuBarExtra binding.
+- Fixed a bug with Light/System theme appearance.
+- Fixed phantom state issues with Menu Bar Icon setting and conditionally applied theme backgrounds to preserve native macOS translucency.
+
+## [0.4.0] - 2026-06-03
+
+### Changes
+- Reorganized Settings sections so related download preferences sit together and app diagnostics live under App.
+- Hardened the release workflow with explicit macOS 26 SDK checks, newer GitHub Actions, and app signature verification.
+- Prefer the bundled `aria2c` binary inside release builds.
+
+### Fixes
+- Fixed queue-specific starts so one queue no longer starts unrelated queued downloads.
+- Fixed scheduler completion handling so empty queues do not trigger post-download system actions.
+- Fixed queue drag reordering when moving items downward.
+- Fixed scheduler Automation permission prompting.
+
+### Features added
+- Added scheduler controls with explicit Automation permission UI.
+- Added global and per-download speed limits.
+- Added advanced transfer options for checksums, headers, cookies, and mirror URLs.
+
 ## [0.3.0] - 2026-06-02
 
 ### Added

Makefile

@@ -1,4 +1,4 @@
-.PHONY: build app dmg run clean
+.PHONY: build app dmg run verify clean
 
 build:
 	swift build -c release
@@ -12,6 +12,9 @@ dmg: app
 run:
 	swift run Firelink
 
+verify:
+	Scripts/verify.sh
+
 clean:
 	swift package clean
 	rm -rf build dist

Package.swift

@@ -13,7 +13,10 @@ let package = Package(
     targets: [
         .executableTarget(
             name: "Firelink",
-            path: "Sources/Firelink"
+            path: "Sources/Firelink",
+            resources: [
+                .process("Assets.xcassets")
+            ]
         )
     ]
 )

README.md

@@ -15,66 +15,50 @@
 
 ---
 
-## ✨ Key Features
+### 📸 Screenshots
 
-- ⚡ **High-Speed Downloads:** Multi-segmented download engine powered by `aria2c` for concurrent connections and optimal bandwidth utilization. Supports HTTP, HTTPS, FTP, and SFTP.
-- 🎨 **Native macOS & SwiftUI:** Responsive interface designed natively for Apple Silicon, featuring resizable tables, customizable columns, sidebar filters, and an in-app Settings page with a built-in update checker.
-- 🗂️ **Smart Queue & Categories:** Drag-and-drop priority ordering, batch link ingestion with smart parsing, and automatic file organization (`Musics`, `Movies`, `Compressed`, `Pictures`, `Documents`, `Other`) based on extension detection.
-- 🛡️ **Reliability & Recovery:** Built-in download recovery and retry handling for interrupted or unstable transfers.
-- 🔒 **Keychain Security:** Local macOS Keychain integration for secure site credential storage and matching during transfers.
-- ⚙️ **Power & System Integrity:** Optional system sleep prevention during active downloads, disk-space safety checks, and automated cleanup of partial `.aria2` metadata cache files.
+Dark mode is shown by default with privacy-safe example downloads. Light mode is tucked away below so the README stays easy to scan.
+
+<div align="center">
+  <img src="Resources/Screenshots/Dark/MainPage.png" alt="Firelink main window in dark theme with sample downloads" width="32%" />
+  <img src="Resources/Screenshots/Dark/AddWindow.png" alt="Add downloads window in dark theme" width="32%" />
+  <img src="Resources/Screenshots/Dark/Settings.png" alt="Firefox integration settings in dark theme" width="32%" />
+  <br/>
+  <sub>Main window, batch link intake, and Firefox integration setup</sub>
+</div>
 
 <details>
-<summary>🔍 View Full Feature Index (30+ features)</summary>
-
-### All native SwiftUI macOS features:
-
-- **Core Download Engine:**
-  - Segmented downloads with per-file connection/split counts.
-  - Multi-threaded, parallel downloading with configurable limits.
-  - Support for HTTP, HTTPS, FTP, and SFTP transfers via `aria2c`.
-  - Automatic download recovery and retry handling for unstable connections.
-- **Advanced Queue Control:**
-  - Drag-and-drop download reordering to manage priorities.
-  - Comprehensive download table with resizable, custom columns (Name, Size, Status, ETA, Dates).
-  - Individual download controls: pause, resume, stop, and queue actions.
-- **Smart Link Ingestion:**
-  - Batch Add window for pasting multiple links at once.
-  - Automated link parsing (whitespaces, newlines, standard separators).
-  - Disk space availability checks and total size calculation prior to adding.
-- **File Organization:**
-  - Automatic categorization of files (Music, Movies, Compressed, Documents, Images) into structured subfolders under `~/Downloads`.
-  - Smart fallback to customizable download folders per category.
-  - Automatic cleanup of unfinished `.aria2` metadata/cache files on removal.
-- **Security & System:**
-  - Local macOS Keychain integration for site logins.
-  - Prevents system sleep while active transfers are in progress, preserving display sleep.
-  - Built-in update checker inside the Settings About pane.
-  - Release `.app` bundle build scripts ready for distribution.
-
+<summary><b>☀️ View Light Theme Screenshots</b></summary>
+<br/>
+<div align="center">
+  <img src="Resources/Screenshots/Light/MainPage.png" alt="Firelink main window in light theme with sample downloads" width="32%" />
+  <img src="Resources/Screenshots/Light/AddWindow.png" alt="Add downloads window in light theme" width="32%" />
+  <img src="Resources/Screenshots/Light/Settings.png" alt="Firefox integration settings in light theme" width="32%" />
+  <br/>
+  <sub>Main window, batch link intake, and Firefox integration setup in light theme</sub>
+</div>
 </details>
 
 ---
 
-## ⚙️ Engine Architecture
+## ✨ Features
 
-Firelink leverages `aria2c` under the hood as its core download engine. Unlike standard `curl`, `aria2c` allows:
-- **Segmented Downloads:** Splits files into multiple streams for maximum transfer speeds.
-- **Unified Connection Control:** A single slider regulates both the server connection count and segment split count, matching the intuitive behavior of classic managers like IDM/FDM.
-- **Built-in Resumability:** Seamlessly resumes interrupted or paused downloads without data corruption.
+- ⚡ **High-Speed Downloads:** Multi-segmented engine powered by `aria2c`.
+- 🎨 **Native SwiftUI:** Responsive Apple Silicon native UI.
+- 🎯 **Chunk Map Inspector:** Visually monitor active segment connections in real time.
+- 🗂️ **Smart Categories:** Automatic file organization (`Musics`, `Movies`, `Compressed`, etc.).
+- 🖱️ **Drag-and-Drop:** Import URLs, text files, and move queued downloads between queues.
+- 🛡️ **Reliability:** Automatic download recovery and retry handling.
+- 🔒 **Keychain Security:** Local macOS Keychain integration for site credentials.
+- ⚙️ **Power & Settings:** Cross-platform styled Settings UI, live Speed Limiter, and system sleep prevention during active downloads.
 
 ---
 
-## 🛠️ Requirements & Setup
+## 🛠️ Quick Start
 
-### 1. Requirements
-- **OS Support:** macOS 14.0 or newer (built natively for Apple Silicon).
-- **Engine:** `aria2c` is fully packaged and bundled internally for a true Zero-Config experience. No external installations are required.
+**OS Support:** macOS 14.0 or newer (Apple Silicon natively).
 
-*For Developers:* If you are building the project from source, you must have the **Swift 6.0 toolchain** (Xcode 15+) installed.
-
-### 2. Build & Run
-Run the application directly via the terminal:
+Run the application directly:
 ```bash
 swift run Firelink
 ```
@@ -84,29 +68,28 @@ Or build a production `.app` bundle:
 make app && open build/Firelink.app
 ```
 
-Create a local Apple Silicon DMG:
-```bash
-make dmg
-```
+---
 
-### Release
-GitHub Actions builds and publishes the macOS ARM64 DMG when a version tag is pushed:
-```bash
-git tag v0.1.0
-git push origin v0.1.0
-```
+## 🧩 Browser Extension
+
+Find the companion browser extension (Firefox) at:
+👉 **[nimbold/Firelink-Extension](https://github.com/nimbold/Firelink-Extension)**
 
 ---
 
 ## 🗺️ Roadmap
 
-- [ ] **Data Persistence:** Store history, column layout preferences, and active queues across restarts.
-- [x] **Zero-Config Setup:** Automatically bundle and configure `aria2c` inside the `.app` bundle.
-- [ ] **Bandwidth Limits:** Add global and per-download speed caps and calendar schedules.
-- [ ] **Browser Extensions:** Capture links directly from Safari, Chrome, and Firefox.
-- [ ] **Advanced Transfer Features:** Checksum validation, cookie/header ingestion, and smart mirror failovers.
-- [x] **Updates & Releases:** GitHub Actions DMG release pipeline and built-in update checker.
-- [ ] **Distribution:** Notarized `.app` releases and Homebrew formulae.
+- [x] Zero-Config `aria2c` bundling.
+- [x] Global & per-download Speed Limiter.
+- [x] Browser Extensions support.
+- [x] In-app integrated Settings UI.
+- [ ] Notarized `.app` releases and Homebrew formulae.
+
+---
+
+## 🏆 Credits
+
+Firelink relies on [aria2](https://aria2.github.io/) as its underlying multi-protocol and multi-source command-line download utility. Special thanks to the aria2 contributors for their excellent engine.
 
 ---
 

Scripts/create_app_bundle.sh

@@ -19,6 +19,16 @@ rm -rf "$APP_DIR"
 mkdir -p "$MACOS_DIR" "$RESOURCES_DIR"
 cp ".build/$CONFIGURATION/$APP_NAME" "$MACOS_DIR/$APP_NAME"
 cp "$ROOT_DIR/Resources/$ICON_NAME.icns" "$RESOURCES_DIR/$ICON_NAME.icns"
+cp "$ROOT_DIR/Sources/Firelink/Assets.xcassets/MenuBarIcon.imageset/MenuBarIconTemplate.png" "$RESOURCES_DIR/MenuBarIconTemplate.png"
+
+echo "Packaging Firefox extension..."
+mkdir -p "$RESOURCES_DIR/FirefoxExtension"
+cp "$ROOT_DIR/Extensions/Firefox/background.js" "$RESOURCES_DIR/FirefoxExtension/background.js"
+cp "$ROOT_DIR/Extensions/Firefox/content.js" "$RESOURCES_DIR/FirefoxExtension/content.js"
+cp "$ROOT_DIR/Extensions/Firefox/manifest.json" "$RESOURCES_DIR/FirefoxExtension/manifest.json"
+cp -R "$ROOT_DIR/Extensions/Firefox/icons" "$RESOURCES_DIR/FirefoxExtension/icons"
+cp -R "$ROOT_DIR/Extensions/Firefox/popup" "$RESOURCES_DIR/FirefoxExtension/popup"
+
 
 ARIA2C_PATH=$(which aria2c || true)
 if [[ -n "$ARIA2C_PATH" && -x "$ARIA2C_PATH" ]]; then
@@ -65,8 +75,14 @@ cat > "$CONTENTS_DIR/Info.plist" <<PLIST
   <string>public.app-category.utilities</string>
   <key>NSHighResolutionCapable</key>
   <true/>
+  <key>NSAppleEventsUsageDescription</key>
+  <string>Firelink needs permission to control Finder so it can sleep, restart, or shut down your Mac after scheduled downloads finish.</string>
 </dict>
 </plist>
 PLIST
 
+if command -v codesign &> /dev/null; then
+  codesign --force --deep --sign - "$APP_DIR"
+fi
+
 echo "Created $APP_DIR"

Scripts/verify.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT_DIR"
+
+swift build
+python3 -m json.tool Extensions/Firefox/manifest.json >/dev/null

Sources/Firelink/AddDownloadsView.swift

@@ -12,23 +12,38 @@ struct AddDownloadsView: View {
     @State private var destinationPath = ""
     @State private var metadataTask: Task<Void, Never>?
     @State private var targetQueueID = DownloadQueue.mainQueueID
+    @State private var speedLimitEnabled = false
+    @State private var speedLimitKiBPerSecond = 1024
+    @State private var showsAdvancedTransfer = false
+    @State private var checksumEnabled = false
+    @State private var checksumAlgorithm: ChecksumAlgorithm = .sha256
+    @State private var checksumValue = ""
+    @State private var headerText = ""
+    @State private var cookieText = ""
+    @State private var mirrorText = ""
+    @State private var useAuthorization = false
+    @State private var authUsername = ""
+    @State private var authPassword = ""
+    @State private var saveLogin = false
 
     var body: some View {
         VStack(spacing: 0) {
             ScrollView {
-                VStack(alignment: .leading, spacing: 18) {
+                VStack(alignment: .leading, spacing: 12) {
                     linkSection
                     optionsSection
+                    advancedTransferSection
                     summarySection
                     previewSection
                 }
-                .padding(20)
+                .padding(12)
             }
-
             Divider()
             actionBar
+                .padding(16)
+                .background(.background)
         }
-        .frame(minWidth: 820, idealWidth: 900, minHeight: 680, idealHeight: 740)
+        .frame(minWidth: 640, idealWidth: 680, minHeight: 500, idealHeight: 540)
         .onChange(of: linkText) { _, newValue in
             scheduleMetadataRefresh(for: newValue)
         }
@@ -37,6 +52,7 @@ struct AddDownloadsView: View {
             targetQueueID = controller.pendingAddQueueID ?? DownloadQueue.mainQueueID
             controller.pendingAddQueueID = nil
             if let text = controller.pendingPasteboardText {
+                applyPendingReferer()
                 linkText = text
                 controller.pendingPasteboardText = nil
             }
@@ -49,14 +65,14 @@ struct AddDownloadsView: View {
     private var linkSection: some View {
         VStack(alignment: .leading, spacing: 8) {
             Label("Download Links", systemImage: "link")
-                .font(.headline)
+                .font(.subheadline.weight(.semibold))
 
             TextEditor(text: $linkText)
-                .font(.system(.body, design: .monospaced))
+                .font(.system(.callout, design: .monospaced))
                 .scrollContentBackground(.hidden)
                 .background(.quaternary.opacity(0.35))
                 .clipShape(RoundedRectangle(cornerRadius: 8))
-                .frame(minHeight: 140)
+                .frame(minHeight: 82)
 
             HStack {
                 Text("\(pendingDownloads.count) valid link\(pendingDownloads.count == 1 ? "" : "s") detected")
@@ -74,19 +90,19 @@ struct AddDownloadsView: View {
     }
 
     private var optionsSection: some View {
-        Grid(alignment: .leading, horizontalSpacing: 14, verticalSpacing: 12) {
+        Grid(alignment: .leading, horizontalSpacing: 12, verticalSpacing: 8) {
             GridRow {
                 Label("Save Location", systemImage: "folder")
-                    .font(.headline)
+                    .font(.subheadline.weight(.semibold))
                 Toggle("Use one folder for all files", isOn: $overrideDestination)
             }
 
             GridRow {
                 Text("")
-                HStack(spacing: 10) {
+                HStack(spacing: 8) {
                     TextField("Automatic by file type", text: $destinationPath)
                         .textFieldStyle(.roundedBorder)
-                        .font(.system(.body, design: .monospaced))
+                        .font(.system(.callout, design: .monospaced))
                         .disabled(!overrideDestination)
 
                     Button {
@@ -98,40 +114,77 @@ struct AddDownloadsView: View {
                 }
             }
 
-            GridRow {
+            GridRow(alignment: .firstTextBaseline) {
                 Label("Connections per File", systemImage: "point.3.connected.trianglepath.dotted")
-                    .font(.headline)
+                    .font(.subheadline.weight(.semibold))
                 VStack(alignment: .leading, spacing: 4) {
                     HStack {
                         Slider(value: $connectionsPerServer, in: 1...16, step: 1)
-                            .frame(width: 220)
+                            .frame(width: 145)
                         Text("\(Int(connectionsPerServer)) segments")
                             .monospacedDigit()
-                            .frame(width: 130, alignment: .leading)
+                            .frame(width: 98, alignment: .leading)
+                    }
+                }
+            }
+
+            GridRow(alignment: .firstTextBaseline) {
+                Label("Speed Limit", systemImage: "speedometer")
+                    .font(.subheadline.weight(.semibold))
+                VStack(alignment: .leading, spacing: 4) {
+                    HStack(spacing: 8) {
+                        Toggle("Limit this batch", isOn: $speedLimitEnabled)
+                            .toggleStyle(.switch)
+                        Stepper(
+                            "\(speedLimitKiBPerSecond) KiB/s",
+                            value: $speedLimitKiBPerSecond,
+                            in: 1...10_485_760,
+                            step: 128
+                        )
+                        .disabled(!speedLimitEnabled)
+                    }
+                }
+            }
+
+            GridRow(alignment: .top) {
+                Label("Authorization", systemImage: "lock.shield")
+                    .font(.subheadline.weight(.semibold))
+                    .padding(.top, 4)
+                VStack(alignment: .leading, spacing: 8) {
+                    Toggle("Use authorization", isOn: $useAuthorization)
+                        .toggleStyle(.switch)
+                    
+                    if useAuthorization {
+                        HStack(spacing: 8) {
+                            TextField("Username", text: $authUsername)
+                                .textFieldStyle(.roundedBorder)
+                                .frame(width: 145)
+                            SecureField("Password", text: $authPassword)
+                                .textFieldStyle(.roundedBorder)
+                                .frame(width: 145)
+                        }
+                        Toggle("Save login for this website", isOn: $saveLogin)
+                            .font(.caption)
+                            .foregroundStyle(.secondary)
                     }
-                    Text("Firelink splits each file into this many parallel segments.")
-                        .font(.caption)
-                        .foregroundStyle(.secondary)
                 }
             }
         }
     }
 
     private var summarySection: some View {
-        Grid(alignment: .leading, horizontalSpacing: 12, verticalSpacing: 10) {
-            GridRow {
-                SummaryTile(title: "Files", value: "\(pendingDownloads.count)", symbolName: "doc.on.doc")
-                SummaryTile(title: "Required", value: requiredSpaceText, symbolName: "externaldrive")
-                SummaryTile(title: "Free", value: freeSpaceText, symbolName: "internaldrive")
-                SummaryTile(title: "Unknown Sizes", value: "\(unknownSizeCount)", symbolName: "questionmark.circle")
-            }
+        HStack(spacing: 8) {
+            SummaryTile(title: "Files", value: "\(pendingDownloads.count)", symbolName: "doc.on.doc")
+            SummaryTile(title: "Required", value: requiredSpaceText, symbolName: "externaldrive")
+            SummaryTile(title: "Free", value: freeSpaceText, symbolName: "internaldrive")
+            SummaryTile(title: "Unknown Sizes", value: "\(unknownSizeCount)", symbolName: "questionmark.circle")
         }
     }
 
     private var previewSection: some View {
         VStack(alignment: .leading, spacing: 8) {
             Label("Preview", systemImage: "list.bullet.rectangle")
-                .font(.headline)
+                .font(.subheadline.weight(.semibold))
 
             Table(pendingDownloads) {
                 TableColumn("File") { item in
@@ -141,10 +194,6 @@ struct AddDownloadsView: View {
                         VStack(alignment: .leading, spacing: 2) {
                             Text(item.fileName)
                                 .lineLimit(1)
-                            Text(item.url.absoluteString)
-                                .font(.caption)
-                                .foregroundStyle(.secondary)
-                                .lineLimit(1)
                         }
                     }
                 }
@@ -153,7 +202,7 @@ struct AddDownloadsView: View {
                     Text(ByteFormatter.string(item.sizeBytes))
                         .monospacedDigit()
                 }
-                .width(95)
+                .width(86)
 
                 TableColumn("Save To") { item in
                     Text(destinationDirectory(for: item).path)
@@ -165,9 +214,9 @@ struct AddDownloadsView: View {
                 TableColumn("Status") { item in
                     MetadataStatusView(state: item.state)
                 }
-                .width(130)
+                .width(110)
             }
-            .frame(minHeight: 230)
+            .frame(minHeight: 135)
         }
     }
 
@@ -177,27 +226,96 @@ struct AddDownloadsView: View {
                 .font(.caption)
                 .foregroundStyle(.secondary)
                 .lineLimit(1)
+            
+            if metadataTask != nil {
+                Button {
+                    metadataTask?.cancel()
+                    metadataTask = nil
+                } label: {
+                    Image(systemName: "xmark.circle.fill")
+                        .foregroundStyle(.secondary)
+                }
+                .buttonStyle(.plain)
+            }
+
             Spacer()
+
             Button("Cancel") {
                 dismiss()
             }
-            Button {
-                addDownloads(start: false)
-            } label: {
-                Label("Add to Queue", systemImage: "list.bullet")
-            }
-            .disabled(pendingDownloads.isEmpty)
+            .keyboardShortcut(.cancelAction)
 
-            Button {
+            Button("Add to Queue") {
+                addDownloads(start: false)
+            }
+            .disabled(!canAddDownloads)
+
+            Button("Start Downloads") {
                 addDownloads(start: true)
-            } label: {
-                Label("Start Downloads", systemImage: "play.fill")
             }
             .buttonStyle(.borderedProminent)
-            .disabled(pendingDownloads.isEmpty)
+            .disabled(!canAddDownloads)
+            .keyboardShortcut(.defaultAction)
+        }
+    }
+
+    private var advancedTransferSection: some View {
+        DisclosureGroup(isExpanded: $showsAdvancedTransfer) {
+            Grid(alignment: .leading, horizontalSpacing: 12, verticalSpacing: 8) {
+                GridRow(alignment: .firstTextBaseline) {
+                    Toggle("Checksum", isOn: $checksumEnabled)
+                        .font(.subheadline.weight(.semibold))
+                    HStack(spacing: 8) {
+                        Picker("Algorithm", selection: $checksumAlgorithm) {
+                            ForEach(ChecksumAlgorithm.allCases) { algorithm in
+                                Text(algorithm.title).tag(algorithm)
+                            }
+                        }
+                        .labelsHidden()
+                        .frame(width: 130)
+
+                        TextField("Expected digest", text: $checksumValue)
+                            .textFieldStyle(.roundedBorder)
+                            .font(.system(.callout, design: .monospaced))
+                    }
+                    .disabled(!checksumEnabled)
+                }
+
+                GridRow(alignment: .top) {
+                    Label("Headers", systemImage: "text.quote")
+                        .font(.subheadline.weight(.semibold))
+                    TextEditor(text: $headerText)
+                        .font(.system(.callout, design: .monospaced))
+                        .scrollContentBackground(.hidden)
+                        .background(.quaternary.opacity(0.35))
+                        .clipShape(RoundedRectangle(cornerRadius: 8))
+                        .frame(minHeight: 48)
+                }
+
+                GridRow(alignment: .firstTextBaseline) {
+                    Label("Cookies", systemImage: "circle.hexagongrid.circle")
+                        .font(.subheadline.weight(.semibold))
+                    TextField("name=value; other=value", text: $cookieText)
+                        .textFieldStyle(.roundedBorder)
+                        .font(.system(.callout, design: .monospaced))
+                }
+
+                GridRow(alignment: .top) {
+                    Label("Mirrors", systemImage: "point.3.filled.connected.trianglepath.dotted")
+                        .font(.subheadline.weight(.semibold))
+                    TextEditor(text: $mirrorText)
+                        .font(.system(.callout, design: .monospaced))
+                        .scrollContentBackground(.hidden)
+                        .background(.quaternary.opacity(0.35))
+                        .clipShape(RoundedRectangle(cornerRadius: 8))
+                        .frame(minHeight: 48)
+                }
+            }
+            .padding(.top, 8)
+        } label: {
+            Label("Advanced Transfer", systemImage: "slider.horizontal.3")
+                .font(.subheadline.weight(.semibold))
         }
-        .padding(14)
-        .background(.bar)
     }
 
     private var requiredSpaceText: String {
@@ -220,6 +338,10 @@ struct AddDownloadsView: View {
             return "Paste one or more HTTP, HTTPS, FTP, or SFTP links."
         }
 
+        if let validationMessage {
+            return validationMessage
+        }
+
         if unknownSizeCount > 0 {
             return "Some servers did not report file size before download."
         }
@@ -227,6 +349,35 @@ struct AddDownloadsView: View {
         return "Ready to add \(pendingDownloads.count) download\(pendingDownloads.count == 1 ? "" : "s")."
     }
 
+    private var canAddDownloads: Bool {
+        !pendingDownloads.isEmpty && validationMessage == nil
+    }
+
+    private var validationMessage: String? {
+        if checksumEnabled && checksumValue.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty {
+            return "Add the expected checksum digest, or turn checksum off."
+        }
+
+        if DownloadTransferOptionParser.invalidHeaderLines(headerText).isEmpty == false {
+            return "Headers must use Name: Value lines."
+        }
+
+        if DownloadTransferOptionParser.invalidMirrorLines(mirrorText).isEmpty == false {
+            return "Mirrors must be valid HTTP, HTTPS, FTP, or SFTP URLs."
+        }
+
+        return nil
+    }
+
+    private var transferOptions: DownloadTransferOptions {
+        DownloadTransferOptions(
+            checksum: checksumEnabled ? DownloadChecksum(algorithm: checksumAlgorithm, value: checksumValue).normalized : nil,
+            requestHeaders: DownloadTransferOptionParser.parseHeaders(headerText),
+            cookieHeader: DownloadTransferOptionParser.cleanCookieHeader(cookieText),
+            mirrorURLs: DownloadTransferOptionParser.parseMirrorURLs(mirrorText)
+        )
+    }
+
     private func scheduleMetadataRefresh(for text: String) {
         metadataTask?.cancel()
         metadataTask = Task {
@@ -238,6 +389,24 @@ struct AddDownloadsView: View {
         }
     }
 
+    private func applyPendingReferer() {
+        guard let referer = controller.pendingReferer?.trimmingCharacters(in: .whitespacesAndNewlines),
+              !referer.isEmpty,
+              URL(string: referer) != nil else {
+            controller.pendingReferer = nil
+            return
+        }
+
+        let refererHeader = "Referer: \(referer)"
+        let existingHeaders = DownloadTransferOptionParser.parseHeaders(headerText)
+        if !existingHeaders.contains(where: { $0.normalized.name.lowercased() == "referer" }) {
+            headerText = headerText.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty
+                ? refererHeader
+                : "\(headerText.trimmingCharacters(in: .whitespacesAndNewlines))\n\(refererHeader)"
+        }
+        controller.pendingReferer = nil
+    }
+
     private func refreshMetadata(for text: String) {
         let urls = DownloadURLParser.parse(text)
         metadataTask?.cancel()
@@ -254,11 +423,18 @@ struct AddDownloadsView: View {
             )
         }
 
+        if let firstURL = urls.first, let creds = settings.credentials(for: firstURL) {
+            useAuthorization = true
+            authUsername = creds.username
+            authPassword = creds.password
+            saveLogin = false
+        }
+
         metadataTask = Task {
             var loaded: [PendingDownload] = []
             for url in urls {
                 guard !Task.isCancelled else { return }
-                let item = await DownloadMetadataFetcher.fetch(for: url, settings: settings)
+                let item = await DownloadMetadataFetcher.fetch(for: url, settings: settings, transferOptions: transferOptions)
                 loaded.append(item)
                 await MainActor.run {
                     for loadedItem in loaded {
@@ -268,6 +444,9 @@ struct AddDownloadsView: View {
                     }
                 }
             }
+            await MainActor.run {
+                metadataTask = nil
+            }
         }
     }
 
@@ -289,12 +468,32 @@ struct AddDownloadsView: View {
     }
 
     private func addDownloads(start: Bool) {
+        var explicitCredentials: DownloadCredentials? = nil
+        if useAuthorization {
+            let cleanUsername = authUsername.trimmingCharacters(in: .whitespacesAndNewlines)
+            if !cleanUsername.isEmpty {
+                explicitCredentials = DownloadCredentials(username: cleanUsername, password: authPassword)
+                if saveLogin {
+                    var savedHosts = Set<String>()
+                    for item in pendingDownloads {
+                        if let host = item.url.host, !savedHosts.contains(host) {
+                            settings.addSiteLogin(urlPattern: host, username: cleanUsername, password: authPassword)
+                            savedHosts.insert(host)
+                        }
+                    }
+                }
+            }
+        }
+
         controller.addPendingDownloads(
             pendingDownloads,
             connectionsPerServer: Int(connectionsPerServer),
             overrideDirectory: overrideDirectory,
             startImmediately: start,
-            queueID: targetQueueID
+            queueID: targetQueueID,
+            credentials: explicitCredentials,
+            transferOptions: transferOptions,
+            speedLimitKiBPerSecond: speedLimitEnabled ? speedLimitKiBPerSecond : nil
         )
         dismiss()
     }
@@ -363,22 +562,22 @@ private struct SummaryTile: View {
     var body: some View {
         HStack(spacing: 10) {
             Image(systemName: symbolName)
-                .font(.title3)
+                .font(.body)
                 .foregroundStyle(.secondary)
-                .frame(width: 24)
+                .frame(width: 20)
             VStack(alignment: .leading, spacing: 2) {
                 Text(title)
                     .font(.caption)
                     .foregroundStyle(.secondary)
                 Text(value)
-                    .font(.headline.monospacedDigit())
+                    .font(.subheadline.weight(.semibold).monospacedDigit())
                     .lineLimit(1)
             }
             Spacer(minLength: 0)
         }
-        .padding(12)
-        .frame(width: 190)
-        .frame(minHeight: 64)
+        .padding(9)
+        .frame(maxWidth: .infinity)
+        .frame(minHeight: 52)
         .background(.quaternary.opacity(0.35))
         .clipShape(RoundedRectangle(cornerRadius: 8))
     }

Sources/Firelink/AppSettings.swift

@@ -65,6 +65,18 @@ struct DownloadProxyConfiguration: Equatable, Sendable {
 
 @MainActor
 final class AppSettings: ObservableObject {
+    @Published var appTheme: AppTheme = .system {
+        didSet { save() }
+    }
+    
+    @Published var appFontSize: AppFontSize = .standard {
+        didSet { save() }
+    }
+    
+    @Published var listRowDensity: ListRowDensity = .standard {
+        didSet { save() }
+    }
+
     @Published var perServerConnections: Int {
         didSet {
             let clamped = min(max(perServerConnections, 1), 16)
@@ -85,6 +97,17 @@ final class AppSettings: ObservableObject {
         }
     }
 
+    @Published var globalSpeedLimitKiBPerSecond: Int {
+        didSet {
+            let clamped = min(max(globalSpeedLimitKiBPerSecond, 0), 10_485_760)
+            if globalSpeedLimitKiBPerSecond != clamped {
+                globalSpeedLimitKiBPerSecond = clamped
+                return
+            }
+            save()
+        }
+    }
+
     @Published var preventsSleepWhileDownloading: Bool {
         didSet { save() }
     }
@@ -112,21 +135,30 @@ final class AppSettings: ObservableObject {
 
     private let defaults: UserDefaults
     private let storageKey = "Firelink.AppSettings.v1"
+    private var saveTask: Task<Void, Never>?
 
     init(defaults: UserDefaults = .standard) {
         self.defaults = defaults
 
         if let data = defaults.data(forKey: storageKey),
            let stored = try? JSONDecoder().decode(StoredSettings.self, from: data) {
+            appTheme = stored.appTheme ?? .system
+            appFontSize = stored.appFontSize ?? .standard
+            listRowDensity = stored.listRowDensity ?? .standard
             perServerConnections = min(max(stored.perServerConnections, 1), 16)
             maxConcurrentDownloads = min(max(stored.maxConcurrentDownloads ?? 3, 1), 12)
+            globalSpeedLimitKiBPerSecond = min(max(stored.globalSpeedLimitKiBPerSecond ?? 0, 0), 10_485_760)
             preventsSleepWhileDownloading = stored.preventsSleepWhileDownloading
             proxySettings = stored.proxySettings?.normalized ?? ProxySettings()
             siteLogins = stored.siteLogins
             downloadDirectories = Self.decodeDirectories(stored.downloadDirectories)
         } else {
+            appTheme = .system
+            appFontSize = .standard
+            listRowDensity = .standard
             perServerConnections = 16
             maxConcurrentDownloads = 3
+            globalSpeedLimitKiBPerSecond = 0
             preventsSleepWhileDownloading = true
             proxySettings = ProxySettings()
             siteLogins = []
@@ -205,16 +237,28 @@ final class AppSettings: ObservableObject {
 
     private func save() {
         let stored = StoredSettings(
+            appTheme: appTheme,
+            appFontSize: appFontSize,
+            listRowDensity: listRowDensity,
             perServerConnections: perServerConnections,
             maxConcurrentDownloads: maxConcurrentDownloads,
+            globalSpeedLimitKiBPerSecond: globalSpeedLimitKiBPerSecond,
             preventsSleepWhileDownloading: preventsSleepWhileDownloading,
             proxySettings: proxySettings.normalized,
             downloadDirectories: Dictionary(uniqueKeysWithValues: downloadDirectories.map { ($0.key.rawValue, $0.value) }),
             siteLogins: siteLogins
         )
+        let defaults = self.defaults
+        let storageKey = self.storageKey
 
-        if let data = try? JSONEncoder().encode(stored) {
-            defaults.set(data, forKey: storageKey)
+        saveTask?.cancel()
+        saveTask = Task { @MainActor [defaults, storageKey] in
+            let data = await Task.detached(priority: .background) {
+                try? JSONEncoder().encode(stored)
+            }.value
+            
+            guard !Task.isCancelled, let encoded = data else { return }
+            defaults.set(encoded, forKey: storageKey)
         }
     }
 
@@ -241,7 +285,7 @@ final class AppSettings: ObservableObject {
             return absolute.contains(normalizedPattern)
         }
 
-        return host == normalizedPattern || host.hasSuffix(".\(normalizedPattern)")
+        return host == normalizedPattern
     }
 
     private static func defaultDirectories() -> [DownloadCategory: String] {
@@ -263,8 +307,12 @@ final class AppSettings: ObservableObject {
 }
 
 private struct StoredSettings: Codable {
+    var appTheme: AppTheme?
+    var appFontSize: AppFontSize?
+    var listRowDensity: ListRowDensity?
     var perServerConnections: Int
     var maxConcurrentDownloads: Int?
+    var globalSpeedLimitKiBPerSecond: Int?
     var preventsSleepWhileDownloading: Bool
     var proxySettings: ProxySettings?
     var downloadDirectories: [String: String]

Sources/Firelink/Aria2DownloadEngine.swift

@@ -1,12 +1,29 @@
 import Foundation
 import CFNetwork
+import Network
 
 final class Aria2DownloadEngine {
     struct Handle {
         let processIdentifier: Int32
+        let rpcPort: Int
+        let rpcSecret: String
         let cancel: @Sendable () -> Void
     }
 
+    static func findFreePort() -> Int {
+        var port: UInt16 = 6800
+        let parameters = NWParameters.tcp
+        for p in 6800...6900 {
+            parameters.requiredLocalEndpoint = .hostPort(host: .ipv4(.loopback), port: NWEndpoint.Port(rawValue: UInt16(p))!)
+            if let listener = try? NWListener(using: parameters) {
+                listener.cancel()
+                port = UInt16(p)
+                break
+            }
+        }
+        return Int(port)
+    }
+
     enum EngineError: LocalizedError {
         case executableNotFound
         case launchFailed(String)
@@ -31,6 +48,11 @@ final class Aria2DownloadEngine {
     }
 
     static func findExecutable() -> URL? {
+        if let bundled = Bundle.main.url(forResource: "aria2c", withExtension: nil),
+           FileManager.default.isExecutableFile(atPath: bundled.path) {
+            return bundled
+        }
+
         let candidates = [
             "/opt/homebrew/bin/aria2c",
             "/usr/local/bin/aria2c",
@@ -49,43 +71,47 @@ final class Aria2DownloadEngine {
             }
         }
 
-        if let bundled = Bundle.main.url(forResource: "aria2c", withExtension: nil),
-           FileManager.default.isExecutableFile(atPath: bundled.path) {
-            return bundled
-        }
-
         return nil
     }
 
-    static func versionString() -> String? {
+    static func versionString() async -> String? {
         guard let executableURL = findExecutable() else { return nil }
 
-        let process = Process()
-        let outputPipe = Pipe()
-        process.executableURL = executableURL
-        process.arguments = ["--version"]
-        process.standardOutput = outputPipe
-        process.standardError = Pipe()
+        return await Task.detached {
+            let process = Process()
+            let outputPipe = Pipe()
+            process.executableURL = executableURL
+            process.arguments = ["--version"]
+            process.standardOutput = outputPipe
+            process.standardError = nil
+            process.standardInput = nil // ensure no stdin is inherited that could cause blocking
 
-        do {
-            try process.run()
-            process.waitUntilExit()
-            guard process.terminationStatus == 0 else { return nil }
+            do {
+                try process.run()
+                // Close the write file handle in the parent process immediately
+                // This guarantees readToEnd() won't hang waiting for the parent itself
+                outputPipe.fileHandleForWriting.closeFile()
+                
+                let data = try? outputPipe.fileHandleForReading.readToEnd()
+                process.waitUntilExit()
+                
+                guard process.terminationStatus == 0, let data = data else { return nil }
 
-            let data = outputPipe.fileHandleForReading.readDataToEndOfFile()
-            let output = String(data: data, encoding: .utf8) ?? ""
-            return output
-                .split(whereSeparator: { $0 == "\n" || $0 == "\r" })
-                .first
-                .map(String.init)
-        } catch {
-            return nil
-        }
+                let output = String(data: data, encoding: .utf8) ?? ""
+                return output
+                    .split(whereSeparator: { $0 == "\n" || $0 == "\r" })
+                    .first
+                    .map(String.init)
+            } catch {
+                return nil
+            }
+        }.value
     }
 
     func start(
         item: DownloadItem,
         proxyConfiguration: DownloadProxyConfiguration,
+        speedLimitKiBPerSecond: Int?,
         progress: @escaping @Sendable (DownloadProgress) -> Void,
         completion: @escaping @Sendable (Result<Void, Error>) -> Void
     ) throws -> Handle {
@@ -98,9 +124,18 @@ final class Aria2DownloadEngine {
             withIntermediateDirectories: true
         )
 
+        let rpcPort = Self.findFreePort()
+        let rpcSecret = UUID().uuidString
+
         let process = Process()
         process.executableURL = executableURL
-        process.arguments = try arguments(for: item, proxyConfiguration: proxyConfiguration)
+        process.arguments = try arguments(
+            for: item,
+            proxyConfiguration: proxyConfiguration,
+            speedLimitKiBPerSecond: speedLimitKiBPerSecond,
+            rpcPort: rpcPort,
+            rpcSecret: rpcSecret
+        )
 
         let inputPipe = Pipe()
         let outputPipe = Pipe()
@@ -160,14 +195,44 @@ final class Aria2DownloadEngine {
             throw EngineError.launchFailed(error.localizedDescription)
         }
 
-        return Handle(processIdentifier: process.processIdentifier) {
+        return Handle(processIdentifier: process.processIdentifier, rpcPort: rpcPort, rpcSecret: rpcSecret) {
             if process.isRunning {
                 process.terminate()
             }
         }
     }
 
-    private func arguments(for item: DownloadItem, proxyConfiguration: DownloadProxyConfiguration) throws -> [String] {
+    static func updateSpeedLimit(handle: Handle, speedLimitKiBPerSecond: Int?) async {
+        guard let url = URL(string: "http://127.0.0.1:\(handle.rpcPort)/jsonrpc") else { return }
+
+        let limitValue = speedLimitKiBPerSecond.map { "\($0)K" } ?? "0"
+        let payload: [String: Any] = [
+            "jsonrpc": "2.0",
+            "method": "aria2.changeGlobalOption",
+            "id": UUID().uuidString,
+            "params": [
+                "token:\(handle.rpcSecret)",
+                ["max-download-limit": limitValue]
+            ]
+        ]
+
+        guard let data = try? JSONSerialization.data(withJSONObject: payload) else { return }
+        var request = URLRequest(url: url)
+        request.httpMethod = "POST"
+        request.addValue("application/json", forHTTPHeaderField: "Content-Type")
+        request.httpBody = data
+        request.timeoutInterval = 3
+
+        _ = try? await URLSession.shared.data(for: request)
+    }
+
+    private func arguments(
+        for item: DownloadItem,
+        proxyConfiguration: DownloadProxyConfiguration,
+        speedLimitKiBPerSecond: Int?,
+        rpcPort: Int,
+        rpcSecret: String
+    ) throws -> [String] {
         var arguments = [
             "--continue=true",
             "--allow-overwrite=false",
@@ -181,9 +246,18 @@ final class Aria2DownloadEngine {
             "--retry-wait=5",
             "--connect-timeout=30",
             "--timeout=60",
-            "--input-file=-"
+            "--uri-selector=adaptive",
+            "--input-file=-",
+            "--enable-rpc=true",
+            "--rpc-listen-port=\(rpcPort)",
+            "--rpc-secret=\(rpcSecret)",
+            "--rpc-listen-all=false"
         ]
 
+        if let speedLimitKiBPerSecond, speedLimitKiBPerSecond > 0 {
+            arguments.append("--max-download-limit=\(speedLimitKiBPerSecond)K")
+        }
+
         arguments.append(contentsOf: try proxyArguments(for: item, configuration: proxyConfiguration))
         return arguments
     }
@@ -281,14 +355,29 @@ final class Aria2DownloadEngine {
 
     private func inputFileContent(for item: DownloadItem) -> String {
         let connections = min(max(item.connectionsPerServer, 1), 16)
+        let urls = ([item.url] + (item.mirrorURLs ?? []))
+            .map { sanitizedOptionValue($0.absoluteString) }
+            .joined(separator: "\t")
         var lines = [
-            sanitizedOptionValue(item.url.absoluteString),
+            urls,
             "  dir=\(sanitizedOptionValue(item.destinationDirectory.path))",
-            "  out=\(sanitizedOptionValue(item.fileName))",
+            "  out=\(sanitizedOptionValue(item.fileName.replacingOccurrences(of: "/", with: "_").replacingOccurrences(of: "\\", with: "_")))",
             "  split=\(connections)",
             "  max-connection-per-server=\(connections)"
         ]
 
+        if let checksum = item.checksum?.normalized, !checksum.isEmpty {
+            lines.append("  checksum=\(checksum.algorithm.rawValue)=\(sanitizedOptionValue(checksum.value))")
+        }
+
+        for header in (item.requestHeaders ?? []).map(\.normalized) where !header.isEmpty {
+            lines.append("  header=\(sanitizedOptionValue(header.headerLine))")
+        }
+
+        if let cookieHeader = item.cookieHeader?.trimmingCharacters(in: .whitespacesAndNewlines), !cookieHeader.isEmpty {
+            lines.append("  header=Cookie: \(sanitizedOptionValue(cookieHeader))")
+        }
+
         if let credentials = item.credentials, !credentials.isEmpty {
             let scheme = item.url.scheme?.lowercased()
             if scheme == "ftp" || scheme == "sftp" {
@@ -313,6 +402,11 @@ final class Aria2DownloadEngine {
 final class LockedDataBuffer: @unchecked Sendable {
     private let lock = NSLock()
     private var storage = Data()
+    private let maxBytes: Int
+
+    init(maxBytes: Int = 512 * 1024) {
+        self.maxBytes = maxBytes
+    }
 
     var data: Data {
         lock.withLock { storage }
@@ -321,6 +415,9 @@ final class LockedDataBuffer: @unchecked Sendable {
     func append(_ data: Data) {
         lock.withLock {
             storage.append(data)
+            if storage.count > maxBytes {
+                storage.removeFirst(storage.count - maxBytes)
+            }
         }
     }
 }

Sources/Firelink/Assets.xcassets/MenuBarIcon.imageset/Contents.json

@@ -0,0 +1,16 @@
+{
+  "images" : [
+    {
+      "filename" : "MenuBarIconTemplate.png",
+      "idiom" : "mac",
+      "scale" : "2x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  },
+  "properties" : {
+    "template-rendering-intent" : "template"
+  }
+}

Sources/Firelink/ChunkMapView.swift

@@ -0,0 +1,160 @@
+import SwiftUI
+
+struct ChunkMapView: View {
+    let item: DownloadItem
+    
+    @State private var bitfield: String = ""
+    @State private var numPieces: Int = 0
+    @State private var pollTask: Task<Void, Never>?
+    @State private var isVisible = false
+    
+    var body: some View {
+        VStack(alignment: .leading, spacing: 8) {
+            if numPieces > 0 {
+                ChunkGrid(bitfield: bitfield, numPieces: numPieces)
+            } else {
+                Text("Loading chunk data...")
+                    .foregroundStyle(.secondary)
+                    .font(.caption)
+            }
+        }
+        .onAppear {
+            isVisible = true
+            startPolling()
+        }
+        .onDisappear {
+            isVisible = false
+            pollTask?.cancel()
+        }
+        .onChange(of: item.status) { _, status in
+            if status != .downloading {
+                pollTask?.cancel()
+            } else if isVisible && pollTask == nil {
+                startPolling()
+            }
+        }
+    }
+    
+    private func startPolling() {
+        pollTask?.cancel()
+        guard let port = item.rpcPort, let secret = item.rpcSecret, item.status == .downloading else { return }
+        
+        pollTask = Task {
+            while !Task.isCancelled {
+                await fetchStatus(port: port, secret: secret)
+                do {
+                    try await Task.sleep(nanoseconds: 1_000_000_000)
+                } catch {
+                    break
+                }
+            }
+        }
+    }
+    
+    private func fetchStatus(port: Int, secret: String) async {
+        guard let url = URL(string: "http://127.0.0.1:\(port)/jsonrpc") else { return }
+        var request = URLRequest(url: url)
+        request.httpMethod = "POST"
+        request.addValue("application/json", forHTTPHeaderField: "Content-Type")
+        
+        let payload: [String: Any] = [
+            "jsonrpc": "2.0",
+            "method": "aria2.tellActive",
+            "id": "1",
+            "params": ["token:\(secret)", ["bitfield", "numPieces"]]
+        ]
+        
+        guard let data = try? JSONSerialization.data(withJSONObject: payload) else { return }
+        request.httpBody = data
+        
+        do {
+            let (responseData, _) = try await URLSession.shared.data(for: request)
+            guard let json = try JSONSerialization.jsonObject(with: responseData) as? [String: Any],
+                  let result = json["result"] as? [[String: Any]],
+                  let active = result.first else {
+                return
+            }
+            
+            let fetchedBitfield = active["bitfield"] as? String ?? ""
+            let fetchedNumPiecesStr = active["numPieces"] as? String ?? "0"
+            let fetchedNumPieces = Int(fetchedNumPiecesStr) ?? 0
+            
+            await MainActor.run {
+                self.bitfield = fetchedBitfield
+                self.numPieces = fetchedNumPieces
+            }
+        } catch {
+            // Ignore errors
+        }
+    }
+}
+
+struct ChunkGrid: View {
+    let bitfield: String
+    let numPieces: Int
+    
+    private var pieces: [Bool] {
+        var result = [Bool]()
+        result.reserveCapacity(numPieces)
+        for char in bitfield {
+            if let val = char.hexDigitValue {
+                for i in (0..<4).reversed() {
+                    if result.count < numPieces {
+                        result.append((val & (1 << i)) != 0)
+                    }
+                }
+            }
+        }
+        while result.count < numPieces {
+            result.append(false)
+        }
+        return result
+    }
+    
+    var body: some View {
+        let itemPieces = pieces
+        Canvas { context, size in
+            let boxSize: CGFloat = 10
+            let spacing: CGFloat = 2
+            let cornerSize = CGSize(width: 2, height: 2)
+            let width = size.width
+            
+            let x: CGFloat = 0
+            let y: CGFloat = 0
+            
+            let completedPath = Path { p in
+                var cx = x
+                var cy = y
+                for piece in itemPieces {
+                    if piece {
+                        p.addRoundedRect(in: CGRect(x: cx, y: cy, width: boxSize - spacing, height: boxSize - spacing), cornerSize: cornerSize)
+                    }
+                    cx += boxSize
+                    if cx + boxSize > width {
+                        cx = 0
+                        cy += boxSize
+                    }
+                }
+            }
+            
+            let pendingPath = Path { p in
+                var cx: CGFloat = 0
+                var cy: CGFloat = 0
+                for piece in itemPieces {
+                    if !piece {
+                        p.addRoundedRect(in: CGRect(x: cx, y: cy, width: boxSize - spacing, height: boxSize - spacing), cornerSize: cornerSize)
+                    }
+                    cx += boxSize
+                    if cx + boxSize > width {
+                        cx = 0
+                        cy += boxSize
+                    }
+                }
+            }
+            
+            context.fill(pendingPath, with: .color(Color.primary.opacity(0.08)))
+            context.fill(completedPath, with: .color(Color.accentColor))
+        }
+        .frame(minHeight: 140)
+    }
+}

Sources/Firelink/ContentView.swift

@@ -3,6 +3,7 @@ import SwiftUI
 
 struct ContentView: View {
     @EnvironmentObject private var controller: DownloadController
+    @EnvironmentObject private var settings: AppSettings
     @Environment(\.openWindow) private var openWindow
     @State private var selection: Set<DownloadItem.ID> = []
     @State private var sidebarSelection: SidebarSelection = .downloads(.all)
@@ -12,8 +13,39 @@ struct ContentView: View {
         NavigationSplitView {
             SidebarView(selection: $sidebarSelection)
                 .navigationSplitViewColumnWidth(min: 190, ideal: 220, max: 260)
+                .themeBackground(settings.appTheme.theme.secondaryBackground)
         } detail: {
             detailView
+                .themeBackground(settings.appTheme.theme.background)
+        }
+        .onReceive(NotificationCenter.default.publisher(for: NSNotification.Name("OpenAddDownloadsWindow"))) { _ in
+            openWindow(id: "add-downloads")
+        }
+        .onDrop(of: [.url, .fileURL, .plainText], isTargeted: nil) { providers in
+            for provider in providers {
+                if provider.canLoadObject(ofClass: URL.self) {
+                    _ = provider.loadObject(ofClass: URL.self) { url, _ in
+                        if let url = url {
+                            DispatchQueue.main.async {
+                                controller.pendingPasteboardText = url.absoluteString
+                                controller.pendingReferer = nil
+                                openWindow(id: "add-downloads")
+                            }
+                        }
+                    }
+                } else if provider.canLoadObject(ofClass: String.self) {
+                    _ = provider.loadObject(ofClass: String.self) { text, _ in
+                        if let text = text {
+                            DispatchQueue.main.async {
+                                controller.pendingPasteboardText = text
+                                controller.pendingReferer = nil
+                                openWindow(id: "add-downloads")
+                            }
+                        }
+                    }
+                }
+            }
+            return true
         }
     }
 
@@ -24,8 +56,12 @@ struct ContentView: View {
             downloadsView(filter: filter)
         case .queue(let queueID):
             queueView(queueID: queueID)
+        case .scheduler:
+            SchedulerView()
+        case .speedLimiter:
+            SpeedLimiterView()
         case .settings:
-            SettingsView()
+            SettingsPaneContainer()
         }
     }
 
@@ -68,42 +104,34 @@ struct ContentView: View {
                 }
             }
 
-            ToolbarItem {
-                Button {
-                    controller.startQueue(queueID: queueID)
-                } label: {
-                    Label("Start Queue", systemImage: "play.fill")
-                }
-            }
-
             ToolbarItemGroup {
-                if !selectedItems.isEmpty {
-                    if selectedItems.contains(where: { $0.status == .downloading }) {
-                        Button {
-                            for item in selectedItems where item.status == .downloading {
-                                controller.pause(item)
-                            }
-                        } label: {
-                            Label("Stop", systemImage: "stop.fill")
+                let canStop = selectedItems.isEmpty ? hasActiveDownloads(in: queueID) : selectedItems.contains(where: { $0.status == .downloading })
+                Button {
+                    if selectedItems.isEmpty {
+                        controller.pauseActiveDownloads(queueID: queueID)
+                    } else {
+                        for item in selectedItems where item.status == .downloading {
+                            controller.pause(item)
                         }
                     }
-
-                    if selectedItems.contains(where: { $0.status == .paused || $0.status == .failed || $0.status == .canceled }) {
-                        Button {
-                            for item in selectedItems where item.status == .paused || item.status == .failed || item.status == .canceled {
-                                controller.resume(item)
-                            }
-                        } label: {
-                            Label("Start", systemImage: "play.fill")
-                        }
-                    }
-
-                    Button(role: .destructive) {
-                        showDeleteConfirmation = true
-                    } label: {
-                        Label("Delete", systemImage: "trash")
-                    }
+                } label: {
+                    Label(selectedItems.isEmpty ? "Stop All" : "Stop", systemImage: "stop.fill")
                 }
+                .disabled(!canStop)
+
+                let canStart = selectedItems.isEmpty ? hasQueuedDownloads(in: queueID) : selectedItems.contains(where: { $0.status == .paused || $0.status == .failed || $0.status == .canceled })
+                Button {
+                    if selectedItems.isEmpty {
+                        controller.startQueue(queueID: queueID)
+                    } else {
+                        for item in selectedItems where item.status == .paused || item.status == .failed || item.status == .canceled {
+                            controller.resume(item)
+                        }
+                    }
+                } label: {
+                    Label(selectedItems.isEmpty ? "Start Queue" : "Start", systemImage: "play.fill")
+                }
+                .disabled(!canStart)
             }
         }
         .background {
@@ -157,6 +185,7 @@ struct ContentView: View {
     private func handlePaste(queueID: UUID?) {
         guard let text = NSPasteboard.general.string(forType: .string), !text.isEmpty else { return }
         controller.pendingPasteboardText = text
+        controller.pendingReferer = nil
         controller.pendingAddQueueID = queueID
         openWindow(id: "add-downloads")
     }
@@ -165,6 +194,22 @@ struct ContentView: View {
         selection = Set(items.map { $0.id })
     }
 
+    private func hasActiveDownloads(in queueID: UUID?) -> Bool {
+        if let queueID {
+            return controller.downloads.contains { $0.status == .downloading && $0.queueID == queueID }
+        }
+
+        return controller.activeCount > 0
+    }
+
+    private func hasQueuedDownloads(in queueID: UUID?) -> Bool {
+        if let queueID {
+            return controller.queueItems(for: queueID).contains { $0.status == .queued }
+        }
+
+        return controller.queuedCount > 0
+    }
+
     private func filteredDownloads(for filter: DownloadSidebarFilter) -> [DownloadItem] {
         switch filter {
         case .all:

Sources/Firelink/DownloadController.swift

@@ -1,6 +1,7 @@
 import AppKit
 import Combine
 import Foundation
+import UserNotifications
 
 @MainActor
 final class DownloadController: ObservableObject {
@@ -8,6 +9,7 @@ final class DownloadController: ObservableObject {
     @Published var queues: [DownloadQueue] = [.main]
     @Published var engineMessage = ""
     @Published var pendingPasteboardText: String?
+    @Published var pendingReferer: String?
     var pendingAddQueueID: UUID?
 
     private let settings: AppSettings
@@ -15,6 +17,7 @@ final class DownloadController: ObservableObject {
     private var activeHandles: [UUID: Aria2DownloadEngine.Handle] = [:]
     private var automaticRetryCounts: [UUID: Int] = [:]
     private var restrictQueueToAutoResume = false
+    private var queuePumpScope: QueuePumpScope = .idle
     private var sleepActivity: SleepActivityHandle?
     private var cancellables = Set<AnyCancellable>()
     private let maxAutomaticRetries = 3
@@ -22,6 +25,7 @@ final class DownloadController: ObservableObject {
         let supportDir = FileManager.default.urls(for: .applicationSupportDirectory, in: .userDomainMask).first ?? URL(fileURLWithPath: NSHomeDirectory())
         return supportDir.appendingPathComponent("Firelink").appendingPathComponent("downloads.json")
     }()
+    private var saveTask: Task<Void, Never>?
 
     init(settings: AppSettings) {
         self.settings = settings
@@ -35,6 +39,25 @@ final class DownloadController: ObservableObject {
                 }
             }
             .store(in: &cancellables)
+
+        settings.$globalSpeedLimitKiBPerSecond
+            .dropFirst()
+            .sink { [weak self] _ in
+                Task { @MainActor in
+                    self?.applySpeedLimitsToActiveDownloads()
+                }
+            }
+            .store(in: &cancellables)
+
+        settings.$maxConcurrentDownloads
+            .dropFirst()
+            .sink { [weak self] _ in
+                Task { @MainActor in
+                    self?.applySpeedLimitsToActiveDownloads()
+                    self?.pumpQueue()
+                }
+            }
+            .store(in: &cancellables)
             
         $downloads
             .dropFirst()
@@ -54,6 +77,7 @@ final class DownloadController: ObservableObject {
             Task { @MainActor in
                 self.engineMessage = "Recovered downloads from the previous session."
                 self.restrictQueueToAutoResume = true
+                self.queuePumpScope = .all
                 self.pumpQueue()
             }
         }
@@ -103,6 +127,10 @@ final class DownloadController: ObservableObject {
             queueID: normalizedQueueID(queueID)
         )
 
+        if let password = item.credentials?.password, !password.isEmpty {
+            KeychainCredentialStore.setPassword(password, for: item.id)
+        }
+
         downloads.append(item)
         engineMessage = "Added \(fileName) to \(category.rawValue)."
         saveDownloads()
@@ -113,19 +141,29 @@ final class DownloadController: ObservableObject {
         connectionsPerServer: Int,
         overrideDirectory: URL?,
         startImmediately: Bool,
-        queueID: UUID = DownloadQueue.mainQueueID
+        queueID: UUID = DownloadQueue.mainQueueID,
+        credentials: DownloadCredentials? = nil,
+        transferOptions: DownloadTransferOptions = DownloadTransferOptions(),
+        speedLimitKiBPerSecond: Int? = nil
     ) {
         let clampedConnections = min(max(connectionsPerServer, 1), 16)
         let targetQueueID = normalizedQueueID(queueID)
+        let speedLimitKiBPerSecond = normalizedSpeedLimit(speedLimitKiBPerSecond)
 
         let items = pendingDownloads.map { pending in
-            DownloadItem(
+            let fileName = FileClassifier.sanitizedFileName(pending.fileName)
+            return DownloadItem(
                 url: pending.url,
-                fileName: pending.fileName,
-                category: pending.category,
+                fileName: fileName,
+                category: FileClassifier.category(forFileName: fileName),
                 destinationDirectory: overrideDirectory ?? pending.defaultDirectory,
                 connectionsPerServer: clampedConnections,
-                credentials: settings.credentials(for: pending.url),
+                credentials: credentials ?? settings.credentials(for: pending.url),
+                checksum: transferOptions.checksum,
+                requestHeaders: transferOptions.requestHeaders,
+                cookieHeader: transferOptions.cookieHeader,
+                mirrorURLs: transferOptions.mirrorURLs,
+                speedLimitKiBPerSecond: speedLimitKiBPerSecond,
                 sizeBytes: pending.sizeBytes,
                 bytesText: ByteFormatter.string(pending.sizeBytes),
                 message: startImmediately ? "Queued to start" : "Added to queue",
@@ -133,6 +171,12 @@ final class DownloadController: ObservableObject {
             )
         }
 
+        for item in items {
+            if let password = item.credentials?.password, !password.isEmpty {
+                KeychainCredentialStore.setPassword(password, for: item.id)
+            }
+        }
+
         downloads.append(contentsOf: items)
         engineMessage = "Added \(items.count) download\(items.count == 1 ? "" : "s")."
         saveDownloads()
@@ -145,6 +189,20 @@ final class DownloadController: ObservableObject {
     func startQueue(queueID: UUID? = nil) {
         engineMessage = ""
         restrictQueueToAutoResume = false
+        if let queueID {
+            let queueID = normalizedQueueID(queueID)
+            switch queuePumpScope {
+            case .all:
+                break
+            case .idle:
+                queuePumpScope = .scoped(queueIDs: [queueID], itemIDs: [])
+            case .scoped(var queueIDs, let itemIDs):
+                queueIDs.insert(queueID)
+                queuePumpScope = .scoped(queueIDs: queueIDs, itemIDs: itemIDs)
+            }
+        } else {
+            queuePumpScope = .all
+        }
         markQueuedDownloadsForAutoResume(queueID: queueID)
         pumpQueue()
     }
@@ -163,6 +221,31 @@ final class DownloadController: ObservableObject {
         pumpQueue()
     }
 
+    func pauseActiveDownloads(queueID: UUID? = nil) {
+        let targetQueueID = queueID.map(normalizedQueueID)
+        let activeItems = downloads.filter { item in
+            item.status == .downloading && (targetQueueID == nil || item.queueID == targetQueueID)
+        }
+
+        guard !activeItems.isEmpty else { return }
+
+        for item in activeItems {
+            activeHandles[item.id]?.cancel()
+            activeHandles[item.id] = nil
+            update(item.id) {
+                $0.status = .paused
+                $0.message = "Paused. Resume will continue from the partial file."
+                $0.autoResumeOnLaunch = false
+            }
+            automaticRetryCounts[item.id] = nil
+        }
+
+        engineMessage = "Paused \(activeItems.count) active download\(activeItems.count == 1 ? "" : "s")."
+        saveDownloads()
+        updateSleepActivity()
+        pumpQueue()
+    }
+
     func queue(_ item: DownloadItem) {
         activeHandles[item.id]?.cancel()
         activeHandles[item.id] = nil
@@ -213,6 +296,25 @@ final class DownloadController: ObservableObject {
             $0.message = ""
             $0.autoResumeOnLaunch = true
         }
+        queuePumpScope = queuePumpScope.includingItem(item.id)
+        automaticRetryCounts[item.id] = nil
+        saveDownloads()
+        pumpQueue()
+    }
+
+    func redownload(_ item: DownloadItem) {
+        trashFiles(for: item)
+        restrictQueueToAutoResume = false
+        update(item.id) {
+            $0.status = .queued
+            $0.progress = 0
+            $0.speedText = "-"
+            $0.etaText = "-"
+            $0.connectionCount = 0
+            $0.message = "Redownloading"
+            $0.autoResumeOnLaunch = true
+        }
+        queuePumpScope = queuePumpScope.includingItem(item.id)
         automaticRetryCounts[item.id] = nil
         saveDownloads()
         pumpQueue()
@@ -247,6 +349,7 @@ final class DownloadController: ObservableObject {
         } else if item.status != .completed {
             removeCacheFiles(for: item)
         }
+        KeychainCredentialStore.deletePassword(for: item.id)
         downloads.removeAll { $0.id == item.id }
         automaticRetryCounts[item.id] = nil
         saveDownloads()
@@ -322,7 +425,8 @@ final class DownloadController: ObservableObject {
         }
 
         let item = downloads.remove(at: source)
-        downloads.insert(item, at: target)
+        let insertionIndex = source < target ? target - 1 : target
+        downloads.insert(item, at: insertionIndex)
         saveDownloads()
     }
 
@@ -332,9 +436,13 @@ final class DownloadController: ObservableObject {
             return
         }
 
+        pruneActiveQueueScopes()
+
         while activeCount < settings.maxConcurrentDownloads,
               let next = downloads.first(where: { item in
-                  item.status == .queued && (!restrictQueueToAutoResume || item.autoResumeOnLaunch == true)
+                  item.status == .queued &&
+                      (!restrictQueueToAutoResume || item.autoResumeOnLaunch == true) &&
+                      isAllowedToStart(item)
               }) {
             start(next)
         }
@@ -344,6 +452,8 @@ final class DownloadController: ObservableObject {
             !downloads.contains(where: { $0.status == .queued && $0.autoResumeOnLaunch == true }) {
             restrictQueueToAutoResume = false
         }
+
+        pruneActiveQueueScopes()
     }
 
     private func start(_ item: DownloadItem) {
@@ -361,6 +471,7 @@ final class DownloadController: ObservableObject {
             let handle = try engine.start(
                 item: item,
                 proxyConfiguration: settings.downloadProxyConfiguration,
+                speedLimitKiBPerSecond: effectiveSpeedLimitKiBPerSecond(for: item),
                 progress: { [weak self] progress in
                     Task { @MainActor in
                         self?.update(item.id) {
@@ -390,6 +501,7 @@ final class DownloadController: ObservableObject {
                                 $0.autoResumeOnLaunch = false
                             }
                             self.saveDownloads()
+                            self.showNotification(title: "Download Completed", body: item.fileName)
                         case .failure(let error):
                             if self.downloads.first(where: { $0.id == item.id })?.status == .paused ||
                                 self.downloads.first(where: { $0.id == item.id })?.status == .canceled {
@@ -405,6 +517,8 @@ final class DownloadController: ObservableObject {
             )
             activeHandles[item.id] = handle
             update(item.id) {
+                $0.rpcPort = handle.rpcPort
+                $0.rpcSecret = handle.rpcSecret
                 $0.message = "Process \(handle.processIdentifier)"
             }
             saveDownloads()
@@ -427,25 +541,84 @@ final class DownloadController: ObservableObject {
         fileName: String,
         destinationDirectory: URL,
         connectionsPerServer: Int,
-        credentials: DownloadCredentials?
+        credentials: DownloadCredentials?,
+        transferOptions: DownloadTransferOptions,
+        speedLimitKiBPerSecond: Int?
     ) {
         update(id) {
             $0.url = url
-            $0.fileName = fileName
-            $0.category = FileClassifier.category(forFileName: fileName)
+            $0.fileName = FileClassifier.sanitizedFileName(fileName)
+            $0.category = FileClassifier.category(forFileName: $0.fileName)
             $0.destinationDirectory = destinationDirectory
             $0.connectionsPerServer = min(max(connectionsPerServer, 1), 16)
             $0.credentials = credentials
+            $0.checksum = transferOptions.checksum
+            $0.requestHeaders = transferOptions.requestHeaders
+            $0.cookieHeader = transferOptions.cookieHeader
+            $0.mirrorURLs = transferOptions.mirrorURLs
+            $0.speedLimitKiBPerSecond = normalizedSpeedLimit(speedLimitKiBPerSecond)
             $0.message = "Properties updated"
         }
+        if let password = credentials?.password, !password.isEmpty {
+            KeychainCredentialStore.setPassword(password, for: id)
+        } else if credentials == nil {
+            KeychainCredentialStore.deletePassword(for: id)
+        }
+        applySpeedLimitToActiveDownload(id: id)
         saveDownloads()
     }
 
+    private func normalizedSpeedLimit(_ value: Int?) -> Int? {
+        guard let value, value > 0 else { return nil }
+        return min(value, 10_485_760)
+    }
+
+    private func effectiveSpeedLimitKiBPerSecond(for item: DownloadItem) -> Int? {
+        let itemLimit = normalizedSpeedLimit(item.speedLimitKiBPerSecond)
+        let globalLimit = normalizedSpeedLimit(settings.globalSpeedLimitKiBPerSecond)
+            .map { max(1, $0 / max(settings.maxConcurrentDownloads, 1)) }
+
+        switch (itemLimit, globalLimit) {
+        case let (.some(itemLimit), .some(globalLimit)):
+            return min(itemLimit, globalLimit)
+        case let (.some(itemLimit), .none):
+            return itemLimit
+        case let (.none, .some(globalLimit)):
+            return globalLimit
+        case (.none, .none):
+            return nil
+        }
+    }
+
+    private func applySpeedLimitsToActiveDownloads() {
+        for item in downloads where item.status == .downloading {
+            applySpeedLimitToActiveDownload(id: item.id)
+        }
+    }
+
+    private func applySpeedLimitToActiveDownload(id: UUID) {
+        guard let handle = activeHandles[id],
+              let item = downloads.first(where: { $0.id == id }) else {
+            return
+        }
+
+        let limit = effectiveSpeedLimitKiBPerSecond(for: item)
+        Task {
+            await Aria2DownloadEngine.updateSpeedLimit(handle: handle, speedLimitKiBPerSecond: limit)
+        }
+    }
+
     private func markQueuedDownloadsForAutoResume(queueID: UUID?) {
-        let normalizedID = queueID.map(normalizedQueueID)
-        for index in downloads.indices where downloads[index].status == .queued &&
-            (normalizedID == nil || normalizedQueueID(downloads[index].queueID) == normalizedID) {
-            downloads[index].autoResumeOnLaunch = true
+        if let queueID {
+            let normalizedID = normalizedQueueID(queueID)
+            for index in downloads.indices where downloads[index].status == .queued &&
+                validQueueID(downloads[index].queueID) == normalizedID {
+                downloads[index].autoResumeOnLaunch = true
+            }
+        } else {
+            for index in downloads.indices where downloads[index].status == .queued {
+                downloads[index].autoResumeOnLaunch = true
+            }
         }
         saveDownloads()
     }
@@ -464,6 +637,9 @@ final class DownloadController: ObservableObject {
                 $0.autoResumeOnLaunch = false
             }
             saveDownloads()
+            if let item = downloads.first(where: { $0.id == itemID }) {
+                showNotification(title: "Download Failed", body: item.fileName)
+            }
             return
         }
 
@@ -492,6 +668,65 @@ final class DownloadController: ObservableObject {
         }
     }
 
+    private func isAllowedToStart(_ item: DownloadItem) -> Bool {
+        switch queuePumpScope {
+        case .idle:
+            return false
+        case .all:
+            return true
+        case .scoped(let queueIDs, let itemIDs):
+            if itemIDs.contains(item.id) {
+                return true
+            }
+            guard let queueID = validQueueID(item.queueID) else { return false }
+            return queueIDs.contains(queueID)
+        }
+    }
+
+    private func pruneActiveQueueScopes() {
+        switch queuePumpScope {
+        case .idle:
+            return
+        case .all:
+            if !downloads.contains(where: { $0.status == .queued || $0.status == .downloading }) {
+                queuePumpScope = .idle
+            }
+        case .scoped(let queueIDs, let itemIDs):
+            let activeQueueIDs = queueIDs.filter { queueID in
+                downloads.contains { item in
+                    validQueueID(item.queueID) == queueID &&
+                        (item.status == .queued || item.status == .downloading)
+                }
+            }
+            let activeItemIDs = itemIDs.filter { itemID in
+                downloads.contains { item in
+                    item.id == itemID && (item.status == .queued || item.status == .downloading)
+                }
+            }
+            queuePumpScope = activeQueueIDs.isEmpty && activeItemIDs.isEmpty
+                ? .idle
+                : .scoped(queueIDs: activeQueueIDs, itemIDs: activeItemIDs)
+        }
+    }
+
+    private enum QueuePumpScope {
+        case idle
+        case all
+        case scoped(queueIDs: Set<UUID>, itemIDs: Set<UUID>)
+
+        func includingItem(_ itemID: UUID) -> QueuePumpScope {
+            switch self {
+            case .idle:
+                return .scoped(queueIDs: [], itemIDs: [itemID])
+            case .all:
+                return .all
+            case .scoped(let queueIDs, var itemIDs):
+                itemIDs.insert(itemID)
+                return .scoped(queueIDs: queueIDs, itemIDs: itemIDs)
+            }
+        }
+    }
+
     private func updateSleepActivity() {
         let shouldPreventSleep = settings.preventsSleepWhileDownloading && activeCount > 0
 
@@ -528,14 +763,23 @@ final class DownloadController: ObservableObject {
     }
 
     private func saveDownloads() {
-        do {
-            let directory = storageURL.deletingLastPathComponent()
-            try FileManager.default.createDirectory(at: directory, withIntermediateDirectories: true, attributes: nil)
-            let state = StoredDownloadState(queues: queues, downloads: downloads)
-            let data = try JSONEncoder().encode(state)
-            try data.write(to: storageURL, options: .atomic)
-        } catch {
-            print("Failed to save downloads: \(error)")
+        let queuesCopy = queues
+        let downloadsCopy = downloads.map(\.redactedForPersistence)
+        let storageURL = self.storageURL
+
+        saveTask?.cancel()
+        saveTask = Task.detached(priority: .background) {
+            do {
+                let directory = storageURL.deletingLastPathComponent()
+                try FileManager.default.createDirectory(at: directory, withIntermediateDirectories: true, attributes: nil)
+                let state = StoredDownloadState(queues: queuesCopy, downloads: downloadsCopy)
+                let data = try JSONEncoder().encode(state)
+                
+                guard !Task.isCancelled else { return }
+                try data.write(to: storageURL, options: .atomic)
+            } catch {
+                print("Failed to save downloads: \(error)")
+            }
         }
     }
 
@@ -557,13 +801,24 @@ final class DownloadController: ObservableObject {
             }
 
             var shouldResumeRecoveredDownloads = false
+            var shouldRewriteStoredDownloads = isLegacyDownloadList
             self.queues = normalizedQueues(state.queues)
             self.downloads = state.downloads.map { item in
                 var adjusted = item
+                let redacted = adjusted.redactedForPersistence
+                if redacted != adjusted {
+                    adjusted = redacted
+                    shouldRewriteStoredDownloads = true
+                }
                 adjusted.queueID = validQueueID(adjusted.queueID)
                 if isLegacyDownloadList, item.queueID == nil {
                     adjusted.queueID = DownloadQueue.mainQueueID
                 }
+                
+                if adjusted.credentials != nil, let storedPassword = KeychainCredentialStore.password(for: adjusted.id) {
+                    adjusted.credentials?.password = storedPassword
+                }
+
                 if adjusted.status == .downloading {
                     adjusted.status = .queued
                     adjusted.message = "Recovered after restart. Resuming from partial file."
@@ -579,7 +834,7 @@ final class DownloadController: ObservableObject {
                 return adjusted
             }
 
-            if shouldResumeRecoveredDownloads {
+            if shouldResumeRecoveredDownloads || shouldRewriteStoredDownloads {
                 saveDownloads()
             }
             return shouldResumeRecoveredDownloads
@@ -612,6 +867,18 @@ final class DownloadController: ObservableObject {
         }
         return normalized
     }
+
+    private func showNotification(title: String, body: String) {
+        UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound]) { granted, _ in
+            guard granted else { return }
+            let content = UNMutableNotificationContent()
+            content.title = title
+            content.body = body
+            content.sound = .default
+            let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: nil)
+            UNUserNotificationCenter.current().add(request)
+        }
+    }
 }
 
 private struct StoredDownloadState: Codable {

Sources/Firelink/DownloadMetadataFetcher.swift

@@ -1,8 +1,9 @@
 import Foundation
 
 enum DownloadURLParser {
+    private static let detector = try? NSDataDetector(types: NSTextCheckingResult.CheckingType.link.rawValue)
+
     static func parse(_ text: String) -> [URL] {
-        let detector = try? NSDataDetector(types: NSTextCheckingResult.CheckingType.link.rawValue)
         let range = NSRange(text.startIndex..<text.endIndex, in: text)
         let detected = detector?.matches(in: text, range: range).compactMap(\.url) ?? []
 
@@ -30,7 +31,11 @@ enum DownloadURLParser {
 }
 
 enum DownloadMetadataFetcher {
-    static func fetch(for url: URL, settings: AppSettings) async -> PendingDownload {
+    static func fetch(
+        for url: URL,
+        settings: AppSettings,
+        transferOptions: DownloadTransferOptions = DownloadTransferOptions()
+    ) async -> PendingDownload {
         let initialName = FileClassifier.fileName(from: url)
         let initialCategory = FileClassifier.category(forFileName: initialName)
         let initialDirectory = await settings.destinationDirectory(for: initialCategory)
@@ -51,6 +56,12 @@ enum DownloadMetadataFetcher {
         request.httpMethod = "HEAD"
         request.timeoutInterval = 12
         request.setValue("Firelink/0.1", forHTTPHeaderField: "User-Agent")
+        for header in transferOptions.requestHeaders.map(\.normalized) where !header.isEmpty {
+            request.setValue(header.value, forHTTPHeaderField: header.name)
+        }
+        if let cookieHeader = transferOptions.cookieHeader?.trimmingCharacters(in: .whitespacesAndNewlines), !cookieHeader.isEmpty {
+            request.setValue(cookieHeader, forHTTPHeaderField: "Cookie")
+        }
 
         do {
             let (_, response) = try await URLSession.shared.data(for: request)
@@ -61,8 +72,8 @@ enum DownloadMetadataFetcher {
 
             if let disposition = httpResponse.value(forHTTPHeaderField: "Content-Disposition"),
                let fileName = fileName(fromContentDisposition: disposition) {
-                pending.fileName = fileName
-                pending.category = FileClassifier.category(forFileName: fileName)
+                pending.fileName = FileClassifier.sanitizedFileName(fileName)
+                pending.category = FileClassifier.category(forFileName: pending.fileName)
                 pending.defaultDirectory = await settings.destinationDirectory(for: pending.category)
             }
 

Sources/Firelink/DownloadPropertiesView.swift

@@ -37,7 +37,16 @@ struct DownloadPropertiesView: View {
     @State private var loginMode: LoginMode
     @State private var username: String
     @State private var password: String
+    @State private var speedLimitEnabled: Bool
+    @State private var speedLimitKiBPerSecond: Int
+    @State private var checksumEnabled: Bool
+    @State private var checksumAlgorithm: ChecksumAlgorithm
+    @State private var checksumValue: String
+    @State private var headerText: String
+    @State private var cookieText: String
+    @State private var mirrorText: String
     @State private var errorMessage = ""
+    @State private var showsAdvancedTransfer = false
 
     init(item: DownloadItem) {
         self.item = item
@@ -45,6 +54,8 @@ struct DownloadPropertiesView: View {
         _fileName = State(initialValue: item.fileName)
         _destinationPath = State(initialValue: item.destinationDirectory.path)
         _connections = State(initialValue: item.connectionsPerServer)
+        _speedLimitEnabled = State(initialValue: (item.speedLimitKiBPerSecond ?? 0) > 0)
+        _speedLimitKiBPerSecond = State(initialValue: max(item.speedLimitKiBPerSecond ?? 1024, 1))
         if let credentials = item.credentials {
             _loginMode = State(initialValue: .custom)
             _username = State(initialValue: credentials.username)
@@ -54,6 +65,18 @@ struct DownloadPropertiesView: View {
             _username = State(initialValue: "")
             _password = State(initialValue: "")
         }
+        if let checksum = item.checksum {
+            _checksumEnabled = State(initialValue: true)
+            _checksumAlgorithm = State(initialValue: checksum.algorithm)
+            _checksumValue = State(initialValue: checksum.value)
+        } else {
+            _checksumEnabled = State(initialValue: false)
+            _checksumAlgorithm = State(initialValue: .sha256)
+            _checksumValue = State(initialValue: "")
+        }
+        _headerText = State(initialValue: (item.requestHeaders ?? []).map(\.headerLine).joined(separator: "\n"))
+        _cookieText = State(initialValue: item.cookieHeader ?? "")
+        _mirrorText = State(initialValue: (item.mirrorURLs ?? []).map(\.absoluteString).joined(separator: "\n"))
     }
 
     var body: some View {
@@ -61,11 +84,11 @@ struct DownloadPropertiesView: View {
             Form {
                 Section("Download") {
                     TextField("URL", text: $urlText)
-                        .font(.system(.body, design: .monospaced))
+                        .font(.system(.callout, design: .monospaced))
                     TextField("File name", text: $fileName)
                     HStack {
                         TextField("Save location", text: $destinationPath)
-                            .font(.system(.body, design: .monospaced))
+                            .font(.system(.callout, design: .monospaced))
                         Button {
                             selectDestination()
                         } label: {
@@ -73,6 +96,15 @@ struct DownloadPropertiesView: View {
                         }
                     }
                     Stepper("Connections per file: \(connections)", value: $connections, in: 1...16)
+                    Toggle("Limit speed", isOn: $speedLimitEnabled)
+                    if speedLimitEnabled {
+                        Stepper(
+                            "Speed cap: \(speedLimitKiBPerSecond) KiB/s",
+                            value: $speedLimitKiBPerSecond,
+                            in: 1...10_485_760,
+                            step: 128
+                        )
+                    }
                 }
 
                 Section("Site Login") {
@@ -93,10 +125,46 @@ struct DownloadPropertiesView: View {
                     }
                 }
 
+                DisclosureGroup("Advanced Transfer", isExpanded: $showsAdvancedTransfer) {
+                    Toggle("Checksum", isOn: $checksumEnabled)
+                    if checksumEnabled {
+                        Picker("Algorithm", selection: $checksumAlgorithm) {
+                            ForEach(ChecksumAlgorithm.allCases) { algorithm in
+                                Text(algorithm.title).tag(algorithm)
+                            }
+                        }
+                        TextField("Expected digest", text: $checksumValue)
+                            .font(.system(.callout, design: .monospaced))
+                    }
+
+                    VStack(alignment: .leading, spacing: 6) {
+                        Text("Headers")
+                        TextEditor(text: $headerText)
+                            .font(.system(.callout, design: .monospaced))
+                            .frame(minHeight: 60)
+                    }
+
+                    TextField("Cookies", text: $cookieText)
+                        .font(.system(.callout, design: .monospaced))
+
+                    VStack(alignment: .leading, spacing: 6) {
+                        Text("Mirrors")
+                        TextEditor(text: $mirrorText)
+                            .font(.system(.callout, design: .monospaced))
+                            .frame(minHeight: 60)
+                    }
+                }
+
                 Section("Progress") {
                     ProgressView(value: item.progress)
                     InfoGrid(item: item)
                 }
+
+                if item.status == .downloading && item.rpcPort != nil {
+                    Section("Chunk Map") {
+                        ChunkMapView(item: item)
+                    }
+                }
             }
             .formStyle(.grouped)
 
@@ -120,7 +188,7 @@ struct DownloadPropertiesView: View {
             .padding(14)
             .background(.bar)
         }
-        .frame(width: 620, height: 560)
+        .frame(width: 720, height: 720)
     }
 
     private var matchingLoginText: String {
@@ -153,7 +221,7 @@ struct DownloadPropertiesView: View {
             return
         }
 
-        let cleanFileName = fileName.trimmingCharacters(in: .whitespacesAndNewlines)
+        let cleanFileName = FileClassifier.sanitizedFileName(fileName)
         guard !cleanFileName.isEmpty else {
             errorMessage = "File name cannot be empty."
             return
@@ -175,16 +243,46 @@ struct DownloadPropertiesView: View {
             credentials = nil
         }
 
+        guard let transferOptions = validatedTransferOptions else {
+            return
+        }
+
         controller.updateDownload(
             id: item.id,
             url: url,
             fileName: cleanFileName,
             destinationDirectory: destination,
             connectionsPerServer: connections,
-            credentials: credentials
+            credentials: credentials,
+            transferOptions: transferOptions,
+            speedLimitKiBPerSecond: speedLimitEnabled ? speedLimitKiBPerSecond : nil
         )
         dismiss()
     }
+
+    private var validatedTransferOptions: DownloadTransferOptions? {
+        if checksumEnabled && checksumValue.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty {
+            errorMessage = "Add the expected checksum digest, or turn checksum off."
+            return nil
+        }
+
+        if DownloadTransferOptionParser.invalidHeaderLines(headerText).isEmpty == false {
+            errorMessage = "Headers must use Name: Value lines."
+            return nil
+        }
+
+        if DownloadTransferOptionParser.invalidMirrorLines(mirrorText).isEmpty == false {
+            errorMessage = "Mirrors must be valid HTTP, HTTPS, FTP, or SFTP URLs."
+            return nil
+        }
+
+        return DownloadTransferOptions(
+            checksum: checksumEnabled ? DownloadChecksum(algorithm: checksumAlgorithm, value: checksumValue).normalized : nil,
+            requestHeaders: DownloadTransferOptionParser.parseHeaders(headerText),
+            cookieHeader: DownloadTransferOptionParser.cleanCookieHeader(cookieText),
+            mirrorURLs: DownloadTransferOptionParser.parseMirrorURLs(mirrorText)
+        )
+    }
 }
 
 private struct InfoGrid: View {
@@ -198,6 +296,7 @@ private struct InfoGrid: View {
             info("Speed", item.speedText)
             info("ETA", item.etaText)
             info("Live connections", "\(item.connectionCount)")
+            info("Speed cap", item.speedLimitText)
             info("Date added", item.createdAt.formatted(date: .abbreviated, time: .shortened))
             info("Last try", item.lastTryAt?.formatted(date: .abbreviated, time: .shortened) ?? "-")
             info("Category", item.category.rawValue)

Sources/Firelink/DownloadTable.swift

@@ -2,104 +2,6 @@ import AppKit
 import SwiftUI
 import UniformTypeIdentifiers
 
-enum DownloadColumn: String, CaseIterable, Identifiable, Codable {
-    case priority = "#"
-    case fileName = "File name"
-    case size = "Size"
-    case progress = "Progress"
-    case status = "Status"
-    case lastTry = "Last try date"
-    case dateAdded = "Date added"
-    case category = "Category"
-    case connections = "Connections"
-    case liveConnections = "Live conn."
-    case speed = "Speed"
-    case eta = "ETA"
-    case destination = "Save location"
-    case url = "URL"
-    case message = "Message"
-
-    var id: String { rawValue }
-
-    var width: CGFloat {
-        switch self {
-        case .priority: return 58
-        case .fileName: return 340
-        case .size: return 100
-        case .status: return 105
-        case .progress: return 115
-        case .lastTry, .dateAdded: return 155
-        case .category: return 105
-        case .connections, .liveConnections: return 95
-        case .speed, .eta: return 90
-        case .destination: return 240
-        case .url: return 280
-        case .message: return 220
-        }
-    }
-}
-
-enum SortDirection: String, Codable {
-    case ascending
-    case descending
-
-    mutating func toggle() {
-        self = self == .ascending ? .descending : .ascending
-    }
-}
-
-final class TableSettings: ObservableObject {
-    @Published var visibleColumns: Set<DownloadColumn> {
-        didSet { save() }
-    }
-    @Published var columnWidths: [DownloadColumn: CGFloat] {
-        didSet { save() }
-    }
-    @Published var sortColumn: DownloadColumn {
-        didSet { save() }
-    }
-    @Published var sortDirection: SortDirection {
-        didSet { save() }
-    }
-
-    private let defaults = UserDefaults.standard
-    private let storageKey = "Firelink.TableSettings.v1"
-
-    init() {
-        if let data = defaults.data(forKey: storageKey),
-           let stored = try? JSONDecoder().decode(StoredTableSettings.self, from: data) {
-            visibleColumns = stored.visibleColumns
-            columnWidths = stored.columnWidths
-            sortColumn = stored.sortColumn
-            sortDirection = stored.sortDirection
-        } else {
-            visibleColumns = [.fileName, .size, .progress, .eta, .lastTry, .dateAdded]
-            columnWidths = Dictionary(uniqueKeysWithValues: DownloadColumn.allCases.map { ($0, $0.width) })
-            sortColumn = .dateAdded
-            sortDirection = .descending
-        }
-    }
-
-    private func save() {
-        let stored = StoredTableSettings(
-            visibleColumns: visibleColumns,
-            columnWidths: columnWidths,
-            sortColumn: sortColumn,
-            sortDirection: sortDirection
-        )
-        if let data = try? JSONEncoder().encode(stored) {
-            defaults.set(data, forKey: storageKey)
-        }
-    }
-}
-
-private struct StoredTableSettings: Codable {
-    var visibleColumns: Set<DownloadColumn>
-    var columnWidths: [DownloadColumn: CGFloat]
-    var sortColumn: DownloadColumn
-    var sortDirection: SortDirection
-}
-
 struct DownloadTable: View {
     @EnvironmentObject private var controller: DownloadController
     @EnvironmentObject private var settings: AppSettings
@@ -109,11 +11,12 @@ struct DownloadTable: View {
     let title: String
     var queueID: UUID?
 
-    @StateObject private var tableSettings = TableSettings()
+    @State private var sortOrder = [KeyPathComparator(\DownloadItem.createdAt, order: .reverse)]
     @State private var pendingDeleteItems: Set<DownloadItem.ID>?
-    @State private var resizeBaseWidths: [DownloadColumn: CGFloat] = [:]
-    @State private var lastSelectedIndex: Int?
-    @State private var draggedItemID: DownloadItem.ID?
+
+    var sortedItems: [DownloadItem] {
+        items.sorted(using: sortOrder)
+    }
 
     var body: some View {
         VStack(spacing: 0) {
@@ -131,37 +34,87 @@ struct DownloadTable: View {
             }
             .padding(.horizontal, 12)
             .padding(.vertical, 8)
-            GeometryReader { proxy in
-                let tableWidth = max(totalWidth, proxy.size.width)
-                let trailingWidth = max(0, tableWidth - totalWidth)
 
-                ScrollView(.horizontal) {
-                    VStack(spacing: 0) {
-                        tableHeader(trailingWidth: trailingWidth)
-                        Divider()
-                        ScrollView(.vertical) {
-                            LazyVStack(spacing: 0) {
-                                ForEach(sortedItems) { item in
-                                    tableRow(for: item, tableWidth: tableWidth, trailingWidth: trailingWidth)
-                                    Divider()
-                                }
-                            }
-                            .frame(width: tableWidth, alignment: .topLeading)
-                            .frame(maxHeight: .infinity, alignment: .topLeading)
+            Table(sortedItems, selection: $selection, sortOrder: $sortOrder) {
+                TableColumn("File Name", value: \.fileName) { item in
+                    doubleClickableCell(for: item) {
+                        HStack(alignment: .top, spacing: 8) {
+                            Image(systemName: item.category.symbolName)
+                                .font(.title3)
+                                .foregroundStyle(categoryColor(for: item.category))
+                                .frame(width: 22)
+                            Text(item.fileName)
+                                .font(.headline)
+                                .lineLimit(1)
+                                .truncationMode(.tail)
                         }
-                        .defaultScrollAnchor(.topLeading)
+                        .draggable(item.id.uuidString)
                     }
-                    .frame(width: tableWidth, height: proxy.size.height, alignment: .topLeading)
                 }
-                .overlay {
-                    if items.isEmpty {
-                        ContentUnavailableView(
-                            "No Downloads",
-                            systemImage: "arrow.down.circle",
-                            description: Text("Use Add to paste one or more links.")
-                        )
+                .width(min: 200, ideal: 340)
+
+                TableColumn("Size", value: \.sortableSize) { item in
+                    doubleClickableCell(for: item) {
+                        Text(ByteFormatter.string(item.sizeBytes))
+                            .monospacedDigit()
+                            .lineLimit(1)
+                            .truncationMode(.tail)
                     }
                 }
+                .width(min: 80, ideal: 100)
+
+                TableColumn("Progress", value: \.progress) { item in
+                    doubleClickableCell(for: item) {
+                        progressBarCell(for: item)
+                    }
+                }
+                .width(min: 100, ideal: 115)
+
+                TableColumn("Status", value: \.status.rawValue) { item in
+                    doubleClickableCell(for: item) {
+                        Text(item.status.rawValue)
+                    }
+                }
+                .width(min: 80, ideal: 105)
+
+                TableColumn("Speed", value: \.speedText) { item in
+                    doubleClickableCell(for: item) {
+                        Text(item.speedText)
+                            .lineLimit(1)
+                            .truncationMode(.tail)
+                    }
+                }
+                .width(min: 70, ideal: 90)
+
+                TableColumn("ETA", value: \.etaText) { item in
+                    doubleClickableCell(for: item) {
+                        Text(item.etaText)
+                            .lineLimit(1)
+                            .truncationMode(.tail)
+                    }
+                }
+                .width(min: 70, ideal: 90)
+
+                TableColumn("Date Added", value: \.createdAt) { item in
+                    doubleClickableCell(for: item) {
+                        Text(formatted(item.createdAt))
+                            .lineLimit(1)
+                            .truncationMode(.tail)
+                    }
+                }
+                .width(min: 100, ideal: 155)
+            }
+            .contextMenu(forSelectionType: DownloadItem.ID.self) { itemIDs in
+                rowContextMenu(for: itemIDs)
+            }
+            .overlay {
+                if items.isEmpty {
+                    ContentUnavailableView(
+                        "No Downloads",
+                        systemImage: "arrow.down.circle",
+                        description: Text("Use Add or press \(Image(systemName: "command"))V to paste one or more links.")
+                    )
+                }
             }
         }
         .confirmationDialog(
@@ -183,7 +136,7 @@ struct DownloadTable: View {
                 pendingDeleteItems = nil
             }
 
-            Button("Move File and Cache to Trash", role: .destructive) {
+            Button("Move to Trash", role: .destructive) {
                 let items = controller.downloads.filter { ids.contains($0.id) }
                 for item in items { controller.delete(item, deleteFiles: true) }
                 selection.subtract(ids)
@@ -203,301 +156,176 @@ struct DownloadTable: View {
         }
     }
 
-    private func tableRow(for item: DownloadItem, tableWidth: CGFloat, trailingWidth: CGFloat) -> some View {
-        DownloadRow(
-            item: item,
-            priorityNumber: priorityNumber(for: item),
-            visibleColumns: orderedVisibleColumns,
-            columnWidth: { width(for: $0) },
-            trailingWidth: trailingWidth
-        )
-        .id(item.id)
-        .frame(width: tableWidth, alignment: .leading)
-        .background(selection.contains(item.id) ? Color.accentColor.opacity(0.12) : Color.clear)
-        .contentShape(Rectangle())
-        .onTapGesture {
-            let index = sortedItems.firstIndex(where: { $0.id == item.id })
-            
-            if NSEvent.modifierFlags.contains(.command) {
-                if selection.contains(item.id) {
-                    selection.remove(item.id)
-                } else {
-                    selection.insert(item.id)
-                }
-                lastSelectedIndex = index
-            } else if NSEvent.modifierFlags.contains(.shift), let lastIndex = lastSelectedIndex, let currentIndex = index {
-                let range = min(lastIndex, currentIndex)...max(lastIndex, currentIndex)
-                let rangeIds = range.map { sortedItems[$0].id }
-                selection.formUnion(rangeIds)
-            } else {
-                selection = [item.id]
-                lastSelectedIndex = index
+    private func doubleClickableCell<Content: View>(
+        for item: DownloadItem,
+        @ViewBuilder content: () -> Content
+    ) -> some View {
+        content()
+            .contentShape(Rectangle())
+            .onTapGesture(count: 2) {
+                performPrimaryAction(for: item)
             }
-        }
-        .contextMenu {
-            rowContextMenu(for: item)
-        }
-        .onDrag {
-            draggedItemID = item.id
-            return NSItemProvider(object: dragPayload(for: item) as NSString)
-        }
-        .onDrop(
-            of: [.text],
-            delegate: QueueDropDelegate(
-                item: item,
-                queueID: queueID,
-                draggedItemID: $draggedItemID,
-                controller: controller
-            )
-        )
     }
 
-    private func tableHeader(trailingWidth: CGFloat) -> some View {
-        HStack(spacing: 0) {
-            ForEach(orderedVisibleColumns) { column in
-                ZStack(alignment: .trailing) {
-                    headerContent(for: column)
-
-                    Rectangle()
-                        .fill(.secondary.opacity(0.18))
-                        .frame(width: 1, height: 20)
-                        .frame(width: 8, height: 34)
-                        .contentShape(Rectangle())
-                        .onHover { isHovering in
-                            if isHovering {
-                                NSCursor.resizeLeftRight.push()
-                            } else {
-                                NSCursor.pop()
-                            }
-                        }
-                        .gesture(
-                            DragGesture(minimumDistance: 1)
-                                .onChanged { value in
-                                    let baseWidth = resizeBaseWidths[column] ?? width(for: column)
-                                    resizeBaseWidths[column] = baseWidth
-                                    tableSettings.columnWidths[column] = max(70, baseWidth + value.translation.width)
-                                }
-                                .onEnded { _ in
-                                    resizeBaseWidths[column] = nil
-                                }
-                        )
-                }
-                .frame(width: width(for: column), height: 34)
-                .clipped()
-            }
-
-            if trailingWidth > 0 {
-                Color.clear
-                    .frame(width: trailingWidth, height: 34)
-            }
-        }
-        .background(.bar)
-        .contextMenu {
-            Section("Columns") {
-                ForEach(availableColumns) { column in
-                    Toggle(column.rawValue, isOn: Binding(
-                        get: { tableSettings.visibleColumns.contains(column) },
-                        set: { isVisible in
-                            if isVisible {
-                                tableSettings.visibleColumns.insert(column)
-                            } else if tableSettings.visibleColumns.count > 1 {
-                                tableSettings.visibleColumns.remove(column)
-                            }
-                        }
-                    ))
-                }
-            }
-            if queueID == nil {
-                Section("Sort By") {
-                    ForEach(availableColumns) { column in
-                        Button(column.rawValue) {
-                            tableSettings.sortColumn = column
-                        }
-                    }
-                }
-            }
+    private func performPrimaryAction(for item: DownloadItem) {
+        if item.status == .completed {
+            openFile(item)
+        } else {
+            openWindow(value: item.id)
         }
     }
 
     @ViewBuilder
-    private func rowContextMenu(for item: DownloadItem) -> some View {
-        let targetItems = selection.contains(item.id) ? controller.downloads.filter { selection.contains($0.id) } : [item]
+    private func rowContextMenu(for itemIDs: Set<DownloadItem.ID>) -> some View {
+        let targetItems = controller.downloads.filter { itemIDs.contains($0.id) }
 
-        Button {
-            for target in targetItems {
-                openWindow(value: target.id)
-            }
-        } label: {
-            Label(targetItems.count > 1 ? "Properties (\(targetItems.count))" : "Properties", systemImage: "info.circle")
-        }
-
-        Button {
-            for target in targetItems {
-                showInFinder(target)
-            }
-        } label: {
-            Label(targetItems.count > 1 ? "Show in Finder (\(targetItems.count))" : "Show in Finder", systemImage: "finder")
-        }
-
-        Divider()
-
-        if targetItems.contains(where: { $0.status == .paused || $0.status == .failed || $0.status == .canceled }) {
-            Button {
-                for target in targetItems where target.status == .paused || target.status == .failed || target.status == .canceled {
-                    controller.resume(target)
-                }
-            } label: {
-                Label("Start", systemImage: "play.fill")
-            }
-        }
-
-        if targetItems.contains(where: { $0.status == .downloading }) {
-            Button {
-                for target in targetItems where target.status == .downloading {
-                    controller.pause(target)
-                }
-            } label: {
-                Label("Stop", systemImage: "stop.fill")
-            }
-        }
-
-        if targetItems.contains(where: { $0.status != .completed && $0.status != .downloading }) {
-            Menu {
-                ForEach(controller.queues) { queue in
-                    Button(queue.name) {
-                        controller.assignToQueue(
-                            itemIDs: Set(targetItems.map(\.id)),
-                            queueID: queue.id
-                        )
+        if !targetItems.isEmpty {
+            if targetItems.allSatisfy({ $0.status == .completed }) {
+                Button {
+                    for target in targetItems {
+                        openFile(target)
                     }
+                } label: {
+                    Label(targetItems.count > 1 ? "Open (\(targetItems.count))" : "Open", systemImage: "doc")
+                }
+            }
+
+            Button {
+                for target in targetItems {
+                    showInFinder(target)
                 }
             } label: {
-                Label("Add to Queue", systemImage: "list.bullet")
+                Label(targetItems.count > 1 ? "Show in Finder (\(targetItems.count))" : "Show in Finder", systemImage: "finder")
+            }
+
+            Divider()
+
+            if targetItems.contains(where: { $0.status == .paused || $0.status == .failed || $0.status == .canceled }) {
+                Button {
+                    for target in targetItems where target.status == .paused || target.status == .failed || target.status == .canceled {
+                        controller.resume(target)
+                    }
+                } label: {
+                    Label("Start", systemImage: "play.fill")
+                }
+            }
+
+            if targetItems.contains(where: { $0.status == .downloading || $0.status == .queued }) {
+                Button {
+                    for target in targetItems where target.status == .downloading || target.status == .queued {
+                        controller.pause(target)
+                    }
+                } label: {
+                    Label("Stop", systemImage: "stop.fill")
+                }
+            }
+
+            if targetItems.contains(where: { $0.status == .completed || $0.status == .failed || $0.status == .canceled }) {
+                Button {
+                    for target in targetItems where target.status == .completed || target.status == .failed || target.status == .canceled {
+                        controller.redownload(target)
+                    }
+                } label: {
+                    Label("Redownload", systemImage: "arrow.clockwise")
+                }
+            }
+
+            Divider()
+
+            if targetItems.contains(where: { $0.status != .completed && $0.status != .downloading }) {
+                Menu {
+                    ForEach(controller.queues) { queue in
+                        Button(queue.name) {
+                            controller.assignToQueue(
+                                itemIDs: Set(targetItems.map(\.id)),
+                                queueID: queue.id
+                            )
+                        }
+                    }
+                } label: {
+                    Label("Move to Queue", systemImage: "list.bullet")
+                }
+                Divider()
+            }
+
+            Button {
+                NSPasteboard.general.clearContents()
+                let urls = targetItems.map { $0.url.absoluteString }.joined(separator: "\n")
+                NSPasteboard.general.setString(urls, forType: .string)
+            } label: {
+                Label(targetItems.count > 1 ? "Copy Addresses" : "Copy Address", systemImage: "link")
+            }
+
+            Button {
+                for target in targetItems {
+                    openWindow(value: target.id)
+                }
+            } label: {
+                Label(targetItems.count > 1 ? "Properties (\(targetItems.count))" : "Properties", systemImage: "info.circle")
+            }
+
+            Divider()
+
+            Button(role: .destructive) {
+                pendingDeleteItems = itemIDs
+            } label: {
+                Label("Remove", systemImage: "trash")
             }
         }
+    }
 
-        Divider()
-
-        Button(role: .destructive) {
-            pendingDeleteItems = Set(targetItems.map(\.id))
-        } label: {
-            Label("Delete", systemImage: "trash")
+    private func categoryColor(for category: DownloadCategory) -> Color {
+        switch category {
+        case .musics: return .pink
+        case .movies: return .indigo
+        case .compressed: return .orange
+        case .pictures: return .teal
+        case .documents: return .blue
+        case .other: return .gray
         }
     }
 
-    private var orderedVisibleColumns: [DownloadColumn] {
-        var columns = DownloadColumn.allCases.filter { tableSettings.visibleColumns.contains($0) }
-        if queueID != nil, !columns.contains(.priority) {
-            columns.insert(.priority, at: 0)
-        } else if queueID == nil {
-            columns.removeAll { $0 == .priority }
-        }
-        return columns
-    }
-
-    private var availableColumns: [DownloadColumn] {
-        DownloadColumn.allCases.filter { $0 != .priority }
-    }
-
-    private var totalWidth: CGFloat {
-        orderedVisibleColumns.map { width(for: $0) }.reduce(0, +)
-    }
-
-    private func width(for column: DownloadColumn) -> CGFloat {
-        max(70, tableSettings.columnWidths[column] ?? column.width)
-    }
-
-    private var sortedItems: [DownloadItem] {
-        if queueID != nil {
-            return items
-        }
-
-        return items.sorted { lhs, rhs in
-            let result = compare(lhs, rhs, by: tableSettings.sortColumn)
-            if result == .orderedSame {
-                return lhs.id.uuidString < rhs.id.uuidString
-            }
-            return tableSettings.sortDirection == .ascending ? result == .orderedAscending : result == .orderedDescending
-        }
-    }
-
-    private func compare(_ lhs: DownloadItem, _ rhs: DownloadItem, by column: DownloadColumn) -> ComparisonResult {
-        switch column {
-        case .priority:
-            return compare(priorityNumber(for: lhs) ?? 0, priorityNumber(for: rhs) ?? 0)
-        case .fileName: return lhs.fileName.localizedCaseInsensitiveCompare(rhs.fileName)
-        case .size: return compare(lhs.sizeBytes ?? -1, rhs.sizeBytes ?? -1)
-        case .status: return compare(lhs.status.rawValue, rhs.status.rawValue)
-        case .progress: return compare(lhs.progress, rhs.progress)
-        case .lastTry: return compare(lhs.lastTryAt ?? .distantPast, rhs.lastTryAt ?? .distantPast)
-        case .dateAdded: return compare(lhs.createdAt, rhs.createdAt)
-        case .category: return compare(lhs.category.rawValue, rhs.category.rawValue)
-        case .connections: return compare(lhs.connectionsPerServer, rhs.connectionsPerServer)
-        case .liveConnections: return compare(lhs.connectionCount, rhs.connectionCount)
-        case .speed: return compare(lhs.speedText, rhs.speedText)
-        case .eta: return compare(lhs.etaText, rhs.etaText)
-        case .destination: return compare(lhs.destinationPath, rhs.destinationPath)
-        case .url: return compare(lhs.url.absoluteString, rhs.url.absoluteString)
-        case .message: return compare(lhs.message, rhs.message)
+    private func statusColor(for status: DownloadStatus) -> Color {
+        switch status {
+        case .queued: return .secondary
+        case .downloading: return .blue
+        case .paused: return .orange
+        case .completed: return .green
+        case .failed: return .red
+        case .canceled: return .gray
         }
     }
 
     @ViewBuilder
-    private func headerContent(for column: DownloadColumn) -> some View {
-        let content = HStack(spacing: 4) {
-            Spacer(minLength: 0)
-            Text(column.rawValue)
-                .font(.caption.weight(.semibold))
+    private func progressBarCell(for item: DownloadItem) -> some View {
+        if item.status == .completed {
+            Text("Completed")
+                .foregroundStyle(.green)
                 .lineLimit(1)
                 .truncationMode(.tail)
-                .multilineTextAlignment(.center)
-                .layoutPriority(1)
-            if queueID == nil && tableSettings.sortColumn == column {
-                Image(systemName: tableSettings.sortDirection == .ascending ? "chevron.up" : "chevron.down")
-                    .font(.caption2)
-            }
-            Spacer(minLength: 0)
-        }
-        .padding(.horizontal, 8)
-        .frame(width: width(for: column), height: 34, alignment: .center)
-        .clipped()
-
-        if queueID == nil {
-            Button {
-                if tableSettings.sortColumn == column {
-                    tableSettings.sortDirection.toggle()
-                } else {
-                    tableSettings.sortColumn = column
-                    tableSettings.sortDirection = .ascending
-                }
-            } label: {
-                content
-            }
-            .buttonStyle(.plain)
         } else {
-            content
+            GeometryReader { proxy in
+                ZStack {
+                    RoundedRectangle(cornerRadius: 4)
+                        .fill(Color.secondary.opacity(0.15))
+                    
+                    RoundedRectangle(cornerRadius: 4)
+                        .fill(statusColor(for: item.status))
+                        .frame(width: max(0, proxy.size.width * item.progress))
+                        .frame(maxWidth: .infinity, alignment: .leading)
+                    
+                    Text(item.progress.formatted(.percent.precision(.fractionLength(0))))
+                        .font(.system(size: 11, weight: .medium, design: .monospaced))
+                        .foregroundColor(.primary)
+                }
+            }
+            .frame(height: 16)
         }
     }
 
-    private func priorityNumber(for item: DownloadItem) -> Int? {
-        guard queueID != nil,
-              let index = items.firstIndex(where: { $0.id == item.id }) else {
-            return nil
-        }
-        return index + 1
-    }
-
-    private func dragPayload(for item: DownloadItem) -> String {
-        let draggedIDs = selection.contains(item.id) ? selection : [item.id]
-        return draggedIDs
-            .map(\.uuidString)
-            .joined(separator: "\n")
-    }
-
-    private func compare<T: Comparable>(_ lhs: T, _ rhs: T) -> ComparisonResult {
-        if lhs < rhs { return .orderedAscending }
-        if lhs > rhs { return .orderedDescending }
-        return .orderedSame
+    private func formatted(_ date: Date?) -> String {
+        guard let date else { return "-" }
+        return date.formatted(date: .abbreviated, time: .shortened)
     }
 
     private func showInFinder(_ item: DownloadItem) {
@@ -520,189 +348,13 @@ struct DownloadTable: View {
         }
         return candidate
     }
-}
 
-private struct DownloadRow: View {
-    let item: DownloadItem
-    let priorityNumber: Int?
-    let visibleColumns: [DownloadColumn]
-    let columnWidth: (DownloadColumn) -> CGFloat
-    let trailingWidth: CGFloat
-
-    var body: some View {
-        HStack(alignment: .top, spacing: 0) {
-            ForEach(visibleColumns) { column in
-                cell(for: column)
-                    .padding(.horizontal, 8)
-                    .padding(.vertical, 8)
-                    .frame(width: columnWidth(column), alignment: alignment(for: column))
-                    .clipped()
-            }
-
-            if trailingWidth > 0 {
-                Color.clear
-                    .frame(width: trailingWidth)
-            }
-        }
-    }
-
-    @ViewBuilder
-    private func cell(for column: DownloadColumn) -> some View {
-        switch column {
-        case .priority:
-            Text(priorityNumber.map(String.init) ?? "-")
-                .monospacedDigit()
-                .foregroundStyle(.secondary)
-                .lineLimit(1)
-        case .fileName:
-            HStack(alignment: .top, spacing: 8) {
-                Image(systemName: item.category.symbolName)
-                    .font(.title3)
-                    .foregroundStyle(categoryColor)
-                    .frame(width: 22)
-                VStack(alignment: .leading, spacing: 6) {
-                    Text(item.fileName)
-                        .font(.headline)
-                        .lineLimit(1)
-                        .truncationMode(.tail)
-                    Text(item.url.absoluteString)
-                        .font(.caption)
-                        .foregroundStyle(.secondary)
-                        .lineLimit(1)
-                        .truncationMode(.tail)
-                }
-                .frame(maxWidth: .infinity, alignment: .leading)
-            }
-        case .size:
-            Text(ByteFormatter.string(item.sizeBytes))
-                .monospacedDigit()
-                .lineLimit(1)
-                .truncationMode(.tail)
-        case .status, .progress:
-            progressBarCell()
-        case .lastTry:
-            Text(formatted(item.lastTryAt))
-                .lineLimit(1)
-                .truncationMode(.tail)
-        case .dateAdded:
-            Text(formatted(item.createdAt))
-                .lineLimit(1)
-                .truncationMode(.tail)
-        case .category:
-            Text(item.category.rawValue)
-                .lineLimit(1)
-                .truncationMode(.tail)
-        case .connections:
-            Text("\(item.connectionsPerServer)")
-                .monospacedDigit()
-                .lineLimit(1)
-        case .liveConnections:
-            Text("\(item.connectionCount)")
-                .monospacedDigit()
-                .lineLimit(1)
-        case .speed:
-            Text(item.speedText)
-                .lineLimit(1)
-                .truncationMode(.tail)
-        case .eta:
-            Text(item.etaText)
-                .lineLimit(1)
-                .truncationMode(.tail)
-        case .destination:
-            Text(item.destinationPath)
-                .font(.system(.caption, design: .monospaced))
-                .lineLimit(1)
-                .truncationMode(.tail)
-        case .url:
-            Text(item.url.absoluteString)
-                .font(.system(.caption, design: .monospaced))
-                .lineLimit(1)
-                .truncationMode(.tail)
-        case .message:
-            Text(item.message)
-                .foregroundStyle(.secondary)
-                .lineLimit(1)
-                .truncationMode(.tail)
-        }
-    }
-
-    private func alignment(for column: DownloadColumn) -> Alignment {
-        column == .fileName ? .leading : .center
-    }
-
-    private var categoryColor: Color {
-        switch item.category {
-        case .musics: return .pink
-        case .movies: return .indigo
-        case .compressed: return .orange
-        case .pictures: return .teal
-        case .documents: return .blue
-        case .other: return .gray
-        }
-    }
-
-    private var statusColor: Color {
-        switch item.status {
-        case .queued: return .secondary
-        case .downloading: return .blue
-        case .paused: return .orange
-        case .completed: return .green
-        case .failed: return .red
-        case .canceled: return .gray
-        }
-    }
-
-    @ViewBuilder
-    private func progressBarCell() -> some View {
-        if item.status == .completed {
-            Text("Completed")
-                .foregroundStyle(.green)
-                .lineLimit(1)
-                .truncationMode(.tail)
+    private func openFile(_ item: DownloadItem) {
+        let fileURL = item.destinationDirectory.appendingPathComponent(item.fileName)
+        if FileManager.default.fileExists(atPath: fileURL.path) {
+            NSWorkspace.shared.open(fileURL)
         } else {
-            GeometryReader { proxy in
-                ZStack {
-                    RoundedRectangle(cornerRadius: 4)
-                        .fill(Color.secondary.opacity(0.15))
-                    
-                    RoundedRectangle(cornerRadius: 4)
-                        .fill(statusColor)
-                        .frame(width: max(0, proxy.size.width * item.progress))
-                        .frame(maxWidth: .infinity, alignment: .leading)
-                    
-                    Text(item.progress.formatted(.percent.precision(.fractionLength(0))))
-                        .font(.system(size: 11, weight: .medium, design: .monospaced))
-                        .foregroundColor(.primary)
-                }
-            }
-            .frame(height: 16)
+            NSWorkspace.shared.open(existingFolder(for: item.destinationDirectory))
         }
     }
-
-    private func formatted(_ date: Date?) -> String {
-        guard let date else { return "-" }
-        return date.formatted(date: .abbreviated, time: .shortened)
-    }
-}
-
-private struct QueueDropDelegate: DropDelegate {
-    let item: DownloadItem
-    let queueID: UUID?
-    @Binding var draggedItemID: DownloadItem.ID?
-    let controller: DownloadController
-
-    func dropEntered(info: DropInfo) {
-        guard let queueID,
-              let draggedItemID,
-              draggedItemID != item.id else {
-            return
-        }
-
-        controller.moveDownload(draggedItemID, before: item.id, in: queueID)
-    }
-
-    func performDrop(info: DropInfo) -> Bool {
-        draggedItemID = nil
-        return queueID != nil
-    }
 }

Sources/Firelink/FileClassifier.swift

@@ -57,10 +57,30 @@ enum FileClassifier {
     static func fileName(from url: URL) -> String {
         let pathName = url.lastPathComponent.removingPercentEncoding ?? url.lastPathComponent
         if !pathName.isEmpty, pathName != "/" {
-            return pathName
+            return sanitizedFileName(pathName)
         }
 
         let host = url.host(percentEncoded: false) ?? "download"
-        return "\(host)-download"
+        return sanitizedFileName("\(host)-download")
+    }
+
+    static func sanitizedFileName(_ rawValue: String, fallback: String = "download") -> String {
+        let separators = CharacterSet(charactersIn: "/\\")
+        let invalidCharacters = separators
+            .union(.newlines)
+            .union(.controlCharacters)
+
+        let components = rawValue
+            .trimmingCharacters(in: .whitespacesAndNewlines)
+            .components(separatedBy: invalidCharacters)
+            .filter { !$0.isEmpty }
+        let clean = components.joined(separator: "_")
+            .trimmingCharacters(in: .whitespacesAndNewlines)
+
+        guard !clean.isEmpty, clean != ".", clean != ".." else {
+            return fallback
+        }
+
+        return String(clean.prefix(255))
     }
 }

Sources/Firelink/FirelinkApp.swift

@@ -4,18 +4,36 @@ import SwiftUI
 struct FirelinkApp: App {
     @StateObject private var settings: AppSettings
     @StateObject private var controller: DownloadController
+    @StateObject private var schedulerController: SchedulerController
+    @AppStorage("showMenuBarIcon") private var showMenuBarIcon = true
+    
+    // Server must be retained to keep listening
+    private let extensionServer: LocalExtensionServer?
 
     init() {
         let settings = AppSettings()
+        let controller = DownloadController(settings: settings)
         _settings = StateObject(wrappedValue: settings)
-        _controller = StateObject(wrappedValue: DownloadController(settings: settings))
+        _controller = StateObject(wrappedValue: controller)
+        _schedulerController = StateObject(wrappedValue: SchedulerController(downloadController: controller))
+        
+        extensionServer = LocalExtensionServer(downloadController: controller)
+        extensionServer?.start()
     }
 
     var body: some Scene {
-        WindowGroup {
+        WindowGroup(id: "main") {
             ContentView()
                 .environmentObject(controller)
                 .environmentObject(settings)
+                .environmentObject(schedulerController)
+                .modifier(AppThemeModifier(theme: settings.appTheme))
+                .modifier(AppFontSizeModifier(fontSize: settings.appFontSize))
+                .onOpenURL { url in
+                    controller.pendingPasteboardText = url.absoluteString
+                    controller.pendingReferer = nil
+                    NotificationCenter.default.post(name: NSNotification.Name("OpenAddDownloadsWindow"), object: nil)
+                }
                 .frame(minWidth: 1180, idealWidth: 1280, minHeight: 720, idealHeight: 760)
         }
         .windowStyle(.titleBar)
@@ -24,6 +42,8 @@ struct FirelinkApp: App {
             AddDownloadsView()
                 .environmentObject(controller)
                 .environmentObject(settings)
+                .modifier(AppThemeModifier(theme: settings.appTheme))
+                .modifier(AppFontSizeModifier(fontSize: settings.appFontSize))
         }
         .windowResizability(.contentSize)
 
@@ -32,19 +52,67 @@ struct FirelinkApp: App {
                 DownloadPropertiesWindow(downloadID: downloadID)
                     .environmentObject(controller)
                     .environmentObject(settings)
+                    .modifier(AppThemeModifier(theme: settings.appTheme))
+                    .modifier(AppFontSizeModifier(fontSize: settings.appFontSize))
             } else {
                 ContentUnavailableView("Download Not Found", systemImage: "questionmark.circle")
+                    .modifier(AppThemeModifier(theme: settings.appTheme))
+                    .modifier(AppFontSizeModifier(fontSize: settings.appFontSize))
             }
         }
         .windowResizability(.contentSize)
 
         .commands {
             CommandGroup(after: .newItem) {
+                Button("Add Downloads...") {
+                    NotificationCenter.default.post(name: NSNotification.Name("OpenAddDownloadsWindow"), object: nil)
+                }
+                .keyboardShortcut("n", modifiers: [.command])
+                
+                Divider()
+
                 Button("Start Queue") {
                     controller.startQueue()
                 }
                 .keyboardShortcut("r", modifiers: [.command])
+
+                Button("Stop Downloads") {
+                    controller.pauseActiveDownloads()
+                }
+                .disabled(controller.activeCount == 0)
+            }
+        }
+
+        MenuBarExtra(isInserted: $showMenuBarIcon) {
+            TrayMenuView()
+                .environmentObject(controller)
+        } label: {
+            if let nsImage = { () -> NSImage? in
+                guard let url = menuBarIconURL(),
+                      let img = NSImage(contentsOf: url) else { return nil }
+                img.size = NSSize(width: 21, height: 21)
+                img.isTemplate = true
+                return img
+            }() {
+                Image(nsImage: nsImage)
+            } else {
+                Image(systemName: "arrow.down.circle")
             }
         }
     }
+
+    private func menuBarIconURL() -> URL? {
+        if let bundled = Bundle.main.url(forResource: "MenuBarIconTemplate", withExtension: "png") {
+            return bundled
+        }
+
+        let sourceFile = URL(fileURLWithPath: #filePath)
+        let projectRoot = sourceFile
+            .deletingLastPathComponent()
+            .deletingLastPathComponent()
+            .deletingLastPathComponent()
+        let sourceTreeIcon = projectRoot
+            .appendingPathComponent("Sources/Firelink/Assets.xcassets/MenuBarIcon.imageset/MenuBarIconTemplate.png")
+        return FileManager.default.fileExists(atPath: sourceTreeIcon.path) ? sourceTreeIcon : nil
+    }
 }

Sources/Firelink/LocalExtensionServer.swift

@@ -0,0 +1,263 @@
+import Foundation
+import Network
+import AppKit
+
+final class LocalExtensionServer: @unchecked Sendable {
+    private enum Constants {
+        static let portRange = 6412...6422
+        static let maxRequestBytes = 128 * 1024
+        static let maxURLCount = 200
+        static let extensionRequestHeader = "x-firelink-extension"
+        static let extensionRequestToken = "firelink-extension-v1"
+        static let allowedSchemes = Set(["http", "https", "ftp", "sftp"])
+    }
+
+    private let listener: NWListener
+    private let downloadController: DownloadController
+    private let queue = DispatchQueue(label: "local.firelink.server")
+    let port: UInt16
+
+    init?(downloadController: DownloadController) {
+        self.downloadController = downloadController
+        let parameters = NWParameters.tcp
+        
+        var createdListener: NWListener?
+        var selectedPort: UInt16?
+        for portValue in Constants.portRange {
+            parameters.requiredLocalEndpoint = .hostPort(host: .ipv4(.loopback), port: NWEndpoint.Port(rawValue: UInt16(portValue))!)
+            do {
+                createdListener = try NWListener(using: parameters)
+                selectedPort = UInt16(portValue)
+                break
+            } catch {
+                continue
+            }
+        }
+        
+        guard let createdListener else {
+            print("Failed to create listener on ports 6412-6422")
+            return nil
+        }
+        
+        self.listener = createdListener
+        self.port = selectedPort ?? 6412
+    }
+
+    func start() {
+        listener.newConnectionHandler = { [weak self] connection in
+            self?.handleConnection(connection)
+        }
+        listener.stateUpdateHandler = { state in
+            print("LocalExtensionServer state: \(state)")
+        }
+        listener.start(queue: queue)
+    }
+
+    private func handleConnection(_ connection: NWConnection) {
+        connection.start(queue: queue)
+        receiveRequest(from: connection, accumulatedData: Data())
+    }
+
+    private func receiveRequest(from connection: NWConnection, accumulatedData: Data) {
+        connection.receive(minimumIncompleteLength: 1, maximumLength: 65536) { [weak self] data, _, isComplete, error in
+            guard let self else {
+                connection.cancel()
+                return
+            }
+
+            var requestData = accumulatedData
+            if let data {
+                requestData.append(data)
+            }
+
+            guard error == nil, requestData.count <= Constants.maxRequestBytes else {
+                self.sendResponse(.payloadTooLarge, connection: connection, origin: nil)
+                return
+            }
+
+            if let request = HTTPRequest(data: requestData) {
+                let status = self.processRequest(request)
+                self.sendResponse(status, connection: connection, origin: request.header(named: "origin"))
+                return
+            }
+
+            if isComplete {
+                self.sendResponse(.badRequest, connection: connection, origin: nil)
+                return
+            }
+
+            self.receiveRequest(from: connection, accumulatedData: requestData)
+        }
+    }
+
+    private func sendResponse(_ status: HTTPStatus, connection: NWConnection, origin: String?) {
+        var headers = [
+            "HTTP/1.1 \(status.rawValue) \(status.reason)",
+            "Content-Length: 0",
+            "Connection: close"
+        ]
+
+        if let origin, isAllowedExtensionOrigin(origin) {
+            headers.append("Access-Control-Allow-Origin: \(origin)")
+            headers.append("Vary: Origin")
+            headers.append("Access-Control-Allow-Methods: POST, OPTIONS")
+            headers.append("Access-Control-Allow-Headers: Content-Type, X-Firelink-Extension")
+        }
+
+        let response = headers.joined(separator: "\r\n") + "\r\n\r\n"
+        connection.send(content: response.data(using: .utf8), completion: .contentProcessed { _ in
+            connection.cancel()
+        })
+    }
+
+    private func isAllowedExtensionOrigin(_ origin: String) -> Bool {
+        guard let url = URL(string: origin),
+              let scheme = url.scheme?.lowercased() else {
+            return false
+        }
+
+        return scheme == "moz-extension" || scheme == "chrome-extension"
+    }
+
+    private func processRequest(_ request: HTTPRequest) -> HTTPStatus {
+        guard request.path == "/download" else {
+            return .notFound
+        }
+
+        let host = request.header(named: "host") ?? ""
+        let isLocalhost = host.hasPrefix("127.0.0.1:") || host.hasPrefix("localhost:") || host == "127.0.0.1" || host == "localhost"
+        guard isLocalhost else {
+            return .forbidden
+        }
+
+        if request.method == "OPTIONS" {
+            return isAllowedExtensionOrigin(request.header(named: "origin") ?? "") ? .noContent : .forbidden
+        }
+
+        guard request.method == "POST" else {
+            return .methodNotAllowed
+        }
+
+        guard request.header(named: Constants.extensionRequestHeader) == Constants.extensionRequestToken else {
+            return .forbidden
+        }
+
+        guard request.header(named: "content-type")?.lowercased().contains("application/json") == true else {
+            return .unsupportedMediaType
+        }
+
+        struct Payload: Decodable {
+            let urls: [String]
+            let referer: String?
+        }
+
+        do {
+            let payload = try JSONDecoder().decode(Payload.self, from: request.body)
+            let validURLs = payload.urls
+                .prefix(Constants.maxURLCount)
+                .compactMap { rawURL -> String? in
+                    let trimmed = rawURL.trimmingCharacters(in: .whitespacesAndNewlines)
+                    guard let url = URL(string: trimmed),
+                          let scheme = url.scheme?.lowercased(),
+                          Constants.allowedSchemes.contains(scheme) else {
+                        return nil
+                    }
+                    return url.absoluteString
+                }
+
+            guard !validURLs.isEmpty else {
+                return .badRequest
+            }
+
+            Task { @MainActor in
+                self.downloadController.pendingPasteboardText = validURLs.joined(separator: "\n")
+                self.downloadController.pendingReferer = payload.referer
+                NotificationCenter.default.post(name: NSNotification.Name("OpenAddDownloadsWindow"), object: nil)
+                NSApp.activate(ignoringOtherApps: true)
+            }
+
+            return .ok
+        } catch {
+            print("Failed to parse local request JSON: \(error)")
+            return .badRequest
+        }
+    }
+}
+
+private struct HTTPRequest {
+    var method: String
+    var path: String
+    var headers: [String: String]
+    var body: Data
+
+    init?(data: Data) {
+        guard let headerRange = data.range(of: Data("\r\n\r\n".utf8)) else {
+            return nil
+        }
+
+        let headerData = data[..<headerRange.lowerBound]
+        guard let headerString = String(data: headerData, encoding: .utf8) else {
+            return nil
+        }
+
+        let lines = headerString.split(separator: "\r\n", omittingEmptySubsequences: false)
+        guard let requestLine = lines.first else {
+            return nil
+        }
+
+        let requestParts = requestLine.split(separator: " ", maxSplits: 2)
+        guard requestParts.count >= 2 else {
+            return nil
+        }
+
+        var parsedHeaders: [String: String] = [:]
+        for line in lines.dropFirst() {
+            guard let colonIndex = line.firstIndex(of: ":") else {
+                continue
+            }
+            let name = line[..<colonIndex].trimmingCharacters(in: .whitespacesAndNewlines).lowercased()
+            let value = line[line.index(after: colonIndex)...].trimmingCharacters(in: .whitespacesAndNewlines)
+            parsedHeaders[name] = value
+        }
+
+        let bodyStart = headerRange.upperBound
+        let expectedBodyLength = parsedHeaders["content-length"].flatMap(Int.init) ?? 0
+        guard expectedBodyLength >= 0,
+              data.count >= bodyStart + expectedBodyLength else {
+            return nil
+        }
+
+        method = String(requestParts[0]).uppercased()
+        path = String(requestParts[1]).split(separator: "?", maxSplits: 1).first.map(String.init) ?? ""
+        headers = parsedHeaders
+        body = data[bodyStart..<(bodyStart + expectedBodyLength)]
+    }
+
+    func header(named name: String) -> String? {
+        headers[name.lowercased()]
+    }
+}
+
+private enum HTTPStatus: Int {
+    case ok = 200
+    case noContent = 204
+    case badRequest = 400
+    case forbidden = 403
+    case notFound = 404
+    case methodNotAllowed = 405
+    case payloadTooLarge = 413
+    case unsupportedMediaType = 415
+
+    var reason: String {
+        switch self {
+        case .ok: "OK"
+        case .noContent: "No Content"
+        case .badRequest: "Bad Request"
+        case .forbidden: "Forbidden"
+        case .notFound: "Not Found"
+        case .methodNotAllowed: "Method Not Allowed"
+        case .payloadTooLarge: "Payload Too Large"
+        case .unsupportedMediaType: "Unsupported Media Type"
+        }
+    }
+}

Sources/Firelink/Models.swift

@@ -54,6 +54,113 @@ struct DownloadCredentials: Codable, Equatable, Sendable {
     }
 }
 
+enum ChecksumAlgorithm: String, Codable, CaseIterable, Identifiable, Sendable {
+    case md5
+    case sha1 = "sha-1"
+    case sha256 = "sha-256"
+    case sha512 = "sha-512"
+
+    var id: String { rawValue }
+
+    var title: String {
+        switch self {
+        case .md5: "MD5"
+        case .sha1: "SHA-1"
+        case .sha256: "SHA-256"
+        case .sha512: "SHA-512"
+        }
+    }
+}
+
+struct DownloadChecksum: Codable, Equatable, Sendable {
+    var algorithm: ChecksumAlgorithm
+    var value: String
+
+    var normalized: DownloadChecksum {
+        DownloadChecksum(
+            algorithm: algorithm,
+            value: value.trimmingCharacters(in: .whitespacesAndNewlines).lowercased()
+        )
+    }
+
+    var isEmpty: Bool {
+        value.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty
+    }
+}
+
+struct DownloadRequestHeader: Codable, Equatable, Sendable {
+    var name: String
+    var value: String
+
+    var normalized: DownloadRequestHeader {
+        DownloadRequestHeader(
+            name: name.trimmingCharacters(in: .whitespacesAndNewlines),
+            value: value.trimmingCharacters(in: .whitespacesAndNewlines)
+        )
+    }
+
+    var isEmpty: Bool {
+        let clean = normalized
+        return clean.name.isEmpty && clean.value.isEmpty
+    }
+
+    var headerLine: String {
+        let clean = normalized
+        return "\(clean.name): \(clean.value)"
+    }
+}
+
+struct DownloadTransferOptions: Equatable, Sendable {
+    var checksum: DownloadChecksum?
+    var requestHeaders: [DownloadRequestHeader] = []
+    var cookieHeader: String?
+    var mirrorURLs: [URL] = []
+}
+
+enum DownloadTransferOptionParser {
+    static func parseHeaders(_ text: String) -> [DownloadRequestHeader] {
+        headerLines(text).compactMap { line in
+            guard let colonIndex = line.firstIndex(of: ":") else { return nil }
+            let name = String(line[..<colonIndex]).trimmingCharacters(in: .whitespacesAndNewlines)
+            let value = String(line[line.index(after: colonIndex)...]).trimmingCharacters(in: .whitespacesAndNewlines)
+            let header = DownloadRequestHeader(name: name, value: value).normalized
+            return header.isEmpty || header.name.isEmpty ? nil : header
+        }
+    }
+
+    static func invalidHeaderLines(_ text: String) -> [String] {
+        headerLines(text).filter { line in
+            guard let colonIndex = line.firstIndex(of: ":") else { return true }
+            let name = String(line[..<colonIndex]).trimmingCharacters(in: .whitespacesAndNewlines)
+            return name.isEmpty
+        }
+    }
+
+    static func cleanCookieHeader(_ text: String) -> String? {
+        var value = text.trimmingCharacters(in: .whitespacesAndNewlines)
+        if value.lowercased().hasPrefix("cookie:") {
+            value = String(value.dropFirst("cookie:".count)).trimmingCharacters(in: .whitespacesAndNewlines)
+        }
+        return value.isEmpty ? nil : value
+    }
+
+    static func parseMirrorURLs(_ text: String) -> [URL] {
+        DownloadURLParser.parse(text)
+    }
+
+    static func invalidMirrorLines(_ text: String) -> [String] {
+        text.split(whereSeparator: { $0 == "\n" || $0 == "\r" })
+            .map { String($0).trimmingCharacters(in: .whitespacesAndNewlines) }
+            .filter { !$0.isEmpty && DownloadURLParser.parse($0).isEmpty }
+    }
+
+    private static func headerLines(_ text: String) -> [String] {
+        text.split(whereSeparator: { $0 == "\n" || $0 == "\r" })
+            .map { String($0).trimmingCharacters(in: .whitespacesAndNewlines) }
+            .filter { !$0.isEmpty }
+    }
+}
+
 struct DownloadItem: Identifiable, Codable, Equatable, Sendable {
     var id = UUID()
     var url: URL
@@ -62,6 +169,11 @@ struct DownloadItem: Identifiable, Codable, Equatable, Sendable {
     var destinationDirectory: URL
     var connectionsPerServer: Int
     var credentials: DownloadCredentials?
+    var checksum: DownloadChecksum?
+    var requestHeaders: [DownloadRequestHeader]?
+    var cookieHeader: String?
+    var mirrorURLs: [URL]?
+    var speedLimitKiBPerSecond: Int?
     var status: DownloadStatus = .queued
     var progress: Double = 0
     var speedText: String = "-"
@@ -74,10 +186,53 @@ struct DownloadItem: Identifiable, Codable, Equatable, Sendable {
     var lastTryAt: Date?
     var autoResumeOnLaunch: Bool?
     var queueID: UUID?
+    var rpcPort: Int?
+    var rpcSecret: String?
 
     var destinationPath: String {
         destinationDirectory.appendingPathComponent(fileName).path
     }
+
+    var sortableSize: Int64 {
+        sizeBytes ?? 0
+    }
+
+    var transferOptions: DownloadTransferOptions {
+        DownloadTransferOptions(
+            checksum: checksum,
+            requestHeaders: requestHeaders ?? [],
+            cookieHeader: cookieHeader,
+            mirrorURLs: mirrorURLs ?? []
+        )
+    }
+
+    var speedLimitText: String {
+        guard let speedLimitKiBPerSecond, speedLimitKiBPerSecond > 0 else {
+            return "No limit"
+        }
+        return "\(speedLimitKiBPerSecond) KiB/s"
+    }
+
+    var redactedForPersistence: DownloadItem {
+        var item = self
+        if item.credentials != nil {
+            item.credentials?.password = ""
+        }
+        item.cookieHeader = nil
+        item.requestHeaders = item.requestHeaders?.filter { !$0.containsSensitiveValue }
+        return item
+    }
+}
+
+private extension DownloadRequestHeader {
+    var containsSensitiveValue: Bool {
+        switch normalized.name.lowercased() {
+        case "authorization", "cookie", "set-cookie", "x-api-key", "x-auth-token":
+            true
+        default:
+            false
+        }
+    }
 }
 
 struct DownloadProgress: Equatable, Sendable {

Sources/Firelink/SchedulerController.swift

@@ -0,0 +1,240 @@
+import AppKit
+import Combine
+import Foundation
+
+enum PostQueueAction: String, Codable, CaseIterable, Identifiable {
+    case doNothing = "Do nothing"
+    case sleep = "Sleep"
+    case restart = "Restart"
+    case shutdown = "Shut down"
+
+    var id: String { rawValue }
+}
+
+enum SchedulerDay: Int, Codable, CaseIterable, Identifiable {
+    case sunday = 1, monday, tuesday, wednesday, thursday, friday, saturday
+
+    var id: Int { rawValue }
+
+    var shortName: String {
+        switch self {
+        case .sunday: "S"
+        case .monday: "M"
+        case .tuesday: "T"
+        case .wednesday: "W"
+        case .thursday: "T"
+        case .friday: "F"
+        case .saturday: "S"
+        }
+    }
+}
+
+struct SchedulerSettings: Codable, Equatable {
+    var isEnabled: Bool = false
+    var startTime: Date = Calendar.current.date(bySettingHour: 0, minute: 0, second: 0, of: Date()) ?? Date()
+    var isEveryday: Bool = true
+    var selectedDays: Set<SchedulerDay> = Set(SchedulerDay.allCases)
+    var postQueueAction: PostQueueAction = .doNothing
+    var targetQueueIDs: Set<UUID> = [DownloadQueue.mainQueueID]
+}
+
+@MainActor
+final class SchedulerController: ObservableObject {
+    @Published var settings: SchedulerSettings
+    @Published var isRunning: Bool = false
+    @Published var hasAutomationPermission: Bool = false
+    private let downloadController: DownloadController
+    private var cancellables = Set<AnyCancellable>()
+    private var timer: Timer?
+
+    private let defaults = UserDefaults.standard
+    private let storageKey = "Firelink.SchedulerSettings.v1"
+    
+    // We only trigger once per minute to prevent multiple triggers in the same minute
+    private var lastTriggeredMinute: Date?
+
+    init(downloadController: DownloadController) {
+        self.downloadController = downloadController
+
+        if let data = defaults.data(forKey: "Firelink.SchedulerSettings.v1"),
+           let stored = try? JSONDecoder().decode(SchedulerSettings.self, from: data) {
+            self.settings = stored
+        } else {
+            self.settings = SchedulerSettings()
+        }
+        if self.settings.targetQueueIDs.isEmpty {
+            self.settings.targetQueueIDs = [DownloadQueue.mainQueueID]
+        }
+
+        checkAutomationPermission()
+        startTimer()
+        
+        $settings
+            .dropFirst()
+            .sink { _ in
+                // We do NOT save instantly here to UserDefaults because the UI will have a "Save" button
+            }
+            .store(in: &cancellables)
+            
+        // Observe downloads to check if we should trigger post-action
+        downloadController.$downloads
+            .dropFirst()
+            .sink { [weak self] _ in
+                self?.checkIfRunningFinished()
+            }
+            .store(in: &cancellables)
+    }
+    
+    func saveSettings() {
+        if let data = try? JSONEncoder().encode(settings) {
+            defaults.set(data, forKey: storageKey)
+        }
+    }
+
+    private func startTimer() {
+        timer = Timer.scheduledTimer(withTimeInterval: 10, repeats: true) { [weak self] _ in
+            Task { @MainActor in
+                self?.checkSchedule()
+            }
+        }
+    }
+
+    private func checkSchedule() {
+        guard settings.isEnabled else { return }
+
+        let now = Date()
+        let calendar = Calendar.current
+
+        // Check if we already triggered in this exact minute
+        if let last = lastTriggeredMinute, calendar.isDate(last, equalTo: now, toGranularity: .minute) {
+            return
+        }
+
+        let startHour = calendar.component(.hour, from: settings.startTime)
+        let startMinute = calendar.component(.minute, from: settings.startTime)
+        
+        let currentHour = calendar.component(.hour, from: now)
+        let currentMinute = calendar.component(.minute, from: now)
+        let currentWeekday = calendar.component(.weekday, from: now)
+
+        if startHour == currentHour && startMinute == currentMinute {
+            let shouldRun: Bool
+            if settings.isEveryday {
+                shouldRun = true
+            } else {
+                let day = SchedulerDay(rawValue: currentWeekday)
+                shouldRun = day.map { settings.selectedDays.contains($0) } ?? false
+            }
+
+            if shouldRun {
+                lastTriggeredMinute = now
+                triggerQueues()
+            }
+        }
+    }
+
+    private func triggerQueues() {
+        let targetQueueIDs = effectiveTargetQueueIDs()
+        let runnableQueueIDs = targetQueueIDs.filter { queueID in
+            downloadController.queues.contains(where: { $0.id == queueID }) &&
+                downloadController.queueItems(for: queueID).contains(where: { $0.status == .queued })
+        }
+
+        guard !runnableQueueIDs.isEmpty else { return }
+        
+        isRunning = true
+        
+        for queueID in runnableQueueIDs {
+            downloadController.startQueue(queueID: queueID)
+        }
+        
+        checkIfRunningFinished()
+    }
+
+    private func checkIfRunningFinished() {
+        guard isRunning else { return }
+        
+        let targetQueueIDs = effectiveTargetQueueIDs()
+        let hasActiveItems = targetQueueIDs.contains { queueID in
+            downloadController.queueItems(for: queueID).contains {
+                $0.status == .queued || $0.status == .downloading
+            }
+        }
+        
+        if !hasActiveItems {
+            isRunning = false
+            performPostAction()
+        }
+    }
+
+    private func effectiveTargetQueueIDs() -> Set<UUID> {
+        settings.targetQueueIDs.isEmpty ? [DownloadQueue.mainQueueID] : settings.targetQueueIDs
+    }
+
+    private func performPostAction() {
+        guard settings.postQueueAction != .doNothing else { return }
+        
+        var scriptCode = ""
+        switch settings.postQueueAction {
+        case .sleep:
+            scriptCode = "tell application \"Finder\" to sleep"
+        case .restart:
+            scriptCode = "tell application \"Finder\" to restart"
+        case .shutdown:
+            scriptCode = "tell application \"Finder\" to shut down"
+        case .doNothing:
+            break
+        }
+        
+        guard !scriptCode.isEmpty else { return }
+        
+        var error: NSDictionary?
+        if let script = NSAppleScript(source: scriptCode) {
+            script.executeAndReturnError(&error)
+            if let error {
+                print("Failed to perform scheduler post action: \(error)")
+            }
+        }
+    }
+
+    func checkAutomationPermission() {
+        let target = NSAppleEventDescriptor(bundleIdentifier: "com.apple.finder")
+        let status = AEDeterminePermissionToAutomateTarget(target.aeDesc, typeWildCard, typeWildCard, false)
+        hasAutomationPermission = (status == noErr)
+    }
+
+    func requestAutomationPermission() {
+        let target = NSAppleEventDescriptor(bundleIdentifier: "com.apple.finder")
+        let status = AEDeterminePermissionToAutomateTarget(target.aeDesc, typeWildCard, typeWildCard, true)
+
+        if status != noErr {
+            triggerAutomationConsentPrompt()
+        }
+
+        checkAutomationPermission()
+
+        if !hasAutomationPermission {
+            openAutomationPermissionSettings()
+        }
+    }
+
+    func openAutomationPermissionSettings() {
+        guard let url = URL(string: "x-apple.systempreferences:com.apple.preference.security?Privacy_Automation") else {
+            return
+        }
+
+        NSWorkspace.shared.open(url)
+    }
+
+    private func triggerAutomationConsentPrompt() {
+        let scriptCode = "tell application \"Finder\" to get name"
+
+        var error: NSDictionary?
+        if let script = NSAppleScript(source: scriptCode) {
+            script.executeAndReturnError(&error)
+            if let error {
+                print("Failed to trigger Automation permission prompt: \(error)")
+            }
+        }
+    }
+}

Sources/Firelink/SchedulerView.swift

@@ -0,0 +1,218 @@
+import SwiftUI
+
+struct SchedulerView: View {
+    @EnvironmentObject private var downloadController: DownloadController
+    @EnvironmentObject private var schedulerController: SchedulerController
+    @State private var showSaveToast: Bool = false
+    
+    // Local state to hold edits before saving
+    @State private var isEnabled: Bool = false
+    @State private var startTime: Date = Date()
+    @State private var isEveryday: Bool = true
+    @State private var selectedDays: Set<SchedulerDay> = []
+    @State private var postQueueAction: PostQueueAction = .doNothing
+    @State private var targetQueueIDs: Set<UUID> = []
+    
+    var body: some View {
+        VStack(spacing: 0) {
+            headerView
+            Divider()
+            
+            ScrollView {
+                VStack(alignment: .leading, spacing: 24) {
+                    VStack(alignment: .leading, spacing: 24) {
+                        timeSelectionSection
+                        queueSelectionSection
+                        postActionSection
+                    }
+                    .opacity(isEnabled ? 1.0 : 0.5)
+                    .disabled(!isEnabled)
+                    
+                    Divider()
+                    permissionsSection
+                }
+                .padding(24)
+            }
+            .frame(maxWidth: .infinity, alignment: .leading)
+        }
+        .onAppear {
+            loadState()
+            schedulerController.checkAutomationPermission()
+        }
+        .onReceive(NotificationCenter.default.publisher(for: NSApplication.didBecomeActiveNotification)) { _ in
+            schedulerController.checkAutomationPermission()
+        }
+        .overlay {
+            if showSaveToast {
+                toastView
+                    .transition(.move(edge: .bottom).combined(with: .opacity))
+            }
+        }
+    }
+    
+    private var headerView: some View {
+        HStack {
+            Toggle(isOn: $isEnabled) {
+                Text("Scheduler")
+                    .font(.title2.weight(.bold))
+            }
+            .toggleStyle(.switch)
+            
+            Spacer()
+            
+            Button("Save Settings") {
+                saveState()
+                withAnimation(.spring()) {
+                    showSaveToast = true
+                }
+                
+                DispatchQueue.main.asyncAfter(deadline: .now() + 2.5) {
+                    withAnimation {
+                        showSaveToast = false
+                    }
+                }
+            }
+            .buttonStyle(.borderedProminent)
+        }
+        .padding(24)
+    }
+    
+    private var timeSelectionSection: some View {
+        VStack(alignment: .leading, spacing: 16) {
+            Text("Start Time")
+                .font(.headline)
+            
+            DatePicker("Time", selection: $startTime, displayedComponents: [.hourAndMinute])
+                .datePickerStyle(.stepperField)
+                .labelsHidden()
+            
+            Toggle("Everyday", isOn: $isEveryday)
+            
+            if !isEveryday {
+                HStack(spacing: 12) {
+                    ForEach(SchedulerDay.allCases) { day in
+                        Toggle(day.shortName, isOn: Binding(
+                            get: { selectedDays.contains(day) },
+                            set: { isSelected in
+                                if isSelected {
+                                    selectedDays.insert(day)
+                                } else {
+                                    selectedDays.remove(day)
+                                }
+                            }
+                        ))
+                        .toggleStyle(.button)
+                    }
+                }
+            }
+        }
+    }
+    
+    private var queueSelectionSection: some View {
+        VStack(alignment: .leading, spacing: 16) {
+            Text("Queues to Start")
+                .font(.headline)
+            
+            if downloadController.queues.isEmpty {
+                Text("No queues available")
+                    .foregroundStyle(.secondary)
+            } else {
+                VStack(alignment: .leading, spacing: 8) {
+                    ForEach(downloadController.queues) { queue in
+                        Toggle(queue.name, isOn: Binding(
+                            get: { targetQueueIDs.contains(queue.id) },
+                            set: { isSelected in
+                                if isSelected {
+                                    targetQueueIDs.insert(queue.id)
+                                } else {
+                                    targetQueueIDs.remove(queue.id)
+                                }
+                            }
+                        ))
+                    }
+                }
+            }
+        }
+    }
+    
+    private var postActionSection: some View {
+        VStack(alignment: .leading, spacing: 16) {
+            Text("After Completion")
+                .font(.headline)
+            
+            Picker("Action", selection: $postQueueAction) {
+                ForEach(PostQueueAction.allCases) { action in
+                    Text(action.rawValue).tag(action)
+                }
+            }
+            .labelsHidden()
+            .pickerStyle(.radioGroup)
+        }
+    }
+    
+    private var permissionsSection: some View {
+        VStack(alignment: .leading, spacing: 12) {
+            Text("System Permissions")
+                .font(.headline)
+            
+            Text("Firelink needs Automation permission to control Finder in order to automatically sleep, restart, or shut down your Mac after downloads finish.")
+                .font(.subheadline)
+                .foregroundStyle(.secondary)
+                .fixedSize(horizontal: false, vertical: true)
+            
+            if schedulerController.hasAutomationPermission {
+                Button("Revoke Permissions") {
+                    schedulerController.openAutomationPermissionSettings()
+                }
+                .buttonStyle(.bordered)
+            } else {
+                Button("Grant Permission") {
+                    schedulerController.requestAutomationPermission()
+                }
+                .buttonStyle(.borderedProminent)
+            }
+        }
+    }
+    
+    private var toastView: some View {
+        VStack {
+            Spacer()
+            HStack(spacing: 10) {
+                Image(systemName: "checkmark.circle.fill")
+                    .foregroundColor(.green)
+                Text("Settings Saved")
+                    .fontWeight(.medium)
+            }
+            .padding(.horizontal, 16)
+            .padding(.vertical, 10)
+            .background(.regularMaterial)
+            .clipShape(Capsule())
+            .shadow(radius: 4, y: 2)
+            .padding(.bottom, 30)
+        }
+        .allowsHitTesting(false)
+    }
+    
+    private func loadState() {
+        isEnabled = schedulerController.settings.isEnabled
+        startTime = schedulerController.settings.startTime
+        isEveryday = schedulerController.settings.isEveryday
+        selectedDays = schedulerController.settings.selectedDays
+        postQueueAction = schedulerController.settings.postQueueAction
+        targetQueueIDs = schedulerController.settings.targetQueueIDs.isEmpty
+            ? [DownloadQueue.mainQueueID]
+            : schedulerController.settings.targetQueueIDs
+    }
+    
+    private func saveState() {
+        schedulerController.settings.isEnabled = isEnabled
+        schedulerController.settings.startTime = startTime
+        schedulerController.settings.isEveryday = isEveryday
+        schedulerController.settings.selectedDays = selectedDays
+        schedulerController.settings.postQueueAction = postQueueAction
+        schedulerController.settings.targetQueueIDs = targetQueueIDs.isEmpty
+            ? [DownloadQueue.mainQueueID]
+            : targetQueueIDs
+        schedulerController.saveSettings()
+    }
+}

Sources/Firelink/SettingsView.swift

@@ -1,91 +1,62 @@
 import AppKit
 import SwiftUI
 
-private enum SettingsSection: String, CaseIterable, Hashable {
-    case downloads = "Downloads"
-    case network = "Network"
-    case locations = "Locations"
-    case siteLogins = "Site Logins"
-    case power = "Power"
-    case engine = "Engine"
-    case about = "About"
-
-    var symbolName: String {
-        switch self {
-        case .downloads: "arrow.down.circle"
-        case .network: "network"
-        case .locations: "folder"
-        case .siteLogins: "key.fill"
-        case .power: "moon.zzz"
-        case .engine: "terminal"
-        case .about: "info.circle"
-        }
-    }
-
-    var groupTitle: String {
-        switch self {
-        case .about:
-            "App"
-        default:
-            "Preferences"
-        }
-    }
-}
-
-struct SettingsView: View {
-    @State private var selection: SettingsSection = .downloads
+struct SettingsPaneContainer: View {
+    @AppStorage("lastSettingsTab") private var activeTab: SettingsSidebarFilter = .downloads
 
     var body: some View {
-        VStack(alignment: .leading, spacing: 0) {
-            Text("Settings")
-                .font(.largeTitle.weight(.semibold))
-                .padding(.horizontal, 28)
-                .padding(.top, 26)
-                .padding(.bottom, 18)
-
+        VStack(spacing: 0) {
+            HStack(spacing: 4) {
+                ForEach(SettingsSidebarFilter.allCases, id: \.self) { filter in
+                    Button {
+                        activeTab = filter
+                    } label: {
+                        VStack(spacing: 4) {
+                            Image(systemName: filter.symbolName)
+                                .font(.system(size: 16))
+                            Text(filter.rawValue)
+                                .font(.system(size: 11, weight: .medium))
+                                .lineLimit(1)
+                                .minimumScaleFactor(0.8)
+                        }
+                        .frame(maxWidth: .infinity)
+                        .padding(.vertical, 8)
+                        .contentShape(Rectangle())
+                    }
+                    .buttonStyle(.plain)
+                    .background(activeTab == filter ? Color.accentColor : Color.clear)
+                    .foregroundStyle(activeTab == filter ? Color.white : Color.primary)
+                    .clipShape(RoundedRectangle(cornerRadius: 8))
+                }
+            }
+            .padding(.horizontal, 32)
+            .padding(.vertical, 16)
+            
             Divider()
 
-            HStack(spacing: 0) {
-                settingsSidebar
+            ScrollView {
+                VStack(alignment: .leading, spacing: 0) {
+                    Text(activeTab.rawValue)
+                        .font(.largeTitle.weight(.semibold))
+                        .padding(.bottom, 24)
 
-                Divider()
-
-                ScrollView {
                     selectedPane
                         .frame(maxWidth: 720, alignment: .leading)
-                        .padding(28)
-                        .frame(maxWidth: .infinity, alignment: .leading)
                 }
+                .padding(32)
+                .frame(maxWidth: .infinity, alignment: .leading)
             }
         }
-        .frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .topLeading)
-    }
-
-    private var settingsSidebar: some View {
-        List(selection: $selection) {
-            Section("Preferences") {
-                ForEach(SettingsSection.allCases.filter { $0.groupTitle == "Preferences" }, id: \.self) { section in
-                    Label(section.rawValue, systemImage: section.symbolName)
-                        .tag(section)
-                }
-            }
-
-            Section("App") {
-                ForEach(SettingsSection.allCases.filter { $0.groupTitle == "App" }, id: \.self) { section in
-                    Label(section.rawValue, systemImage: section.symbolName)
-                        .tag(section)
-                }
-            }
-        }
-        .listStyle(.sidebar)
-        .frame(width: 210)
+        .frame(maxWidth: .infinity, maxHeight: .infinity)
     }
 
     @ViewBuilder
     private var selectedPane: some View {
-        switch selection {
+        switch activeTab {
         case .downloads:
             DownloadSettingsPane()
+        case .lookAndFeel:
+            LookAndFeelSettingsPane()
         case .network:
             NetworkSettingsPane()
         case .locations:
@@ -96,12 +67,60 @@ struct SettingsView: View {
             PowerSettingsPane()
         case .engine:
             EngineSettingsPane()
+        case .integration:
+            IntegrationSettingsPane()
         case .about:
             AboutSettingsPane()
         }
     }
 }
 
+private struct LookAndFeelSettingsPane: View {
+    @EnvironmentObject private var settings: AppSettings
+    @AppStorage("showMenuBarIcon") private var showMenuBarIcon = true
+
+    var body: some View {
+        Form {
+            Section("App Theme") {
+                Picker("Theme", selection: $settings.appTheme) {
+                    ForEach(AppTheme.allCases) { theme in
+                        Text(theme.rawValue)
+                            .tag(theme)
+                    }
+                }
+                .pickerStyle(.radioGroup)
+                
+                Text("Select a color palette for the app's user interface.")
+                    .font(.caption)
+                    .foregroundStyle(.secondary)
+            }
+            
+            Section("Display") {
+                Picker("Font Size", selection: $settings.appFontSize) {
+                    ForEach(AppFontSize.allCases) { size in
+                        Text(size.rawValue).tag(size)
+                    }
+                }
+                
+                Picker("List Row Density", selection: $settings.listRowDensity) {
+                    ForEach(ListRowDensity.allCases) { density in
+                        Text(density.rawValue).tag(density)
+                    }
+                }
+            }
+            
+            Section("Menu Bar") {
+                Toggle("Show menu bar icon", isOn: $showMenuBarIcon)
+                
+                Text("Provides quick access to downloads and queues from the macOS menu bar. Restart required if hiding.")
+                    .font(.caption)
+                    .foregroundStyle(.secondary)
+            }
+        }
+        .formStyle(.grouped)
+    }
+}
+
 private struct AboutSettingsPane: View {
     @StateObject private var updateChecker = AppUpdateChecker()
     @State private var availableUpdate: AvailableUpdate?
@@ -131,7 +150,7 @@ private struct AboutSettingsPane: View {
                     VStack(alignment: .leading, spacing: 4) {
                         Text("Firelink")
                             .font(.title2.weight(.semibold))
-                        Text("Version \(appVersion) (\(buildNumber))")
+                        Text("Version \(appVersion)")
                             .foregroundStyle(.secondary)
                         Text("A native macOS download manager for fast, organized, segmented transfers.")
                             .font(.caption)
@@ -141,30 +160,6 @@ private struct AboutSettingsPane: View {
                 .padding(.vertical, 4)
             }
 
-            Section("Developer") {
-                LabeledContent("Created by") {
-                    Text("NimBold")
-                }
-
-                LabeledContent("GitHub") {
-                    Link("@nimbold", destination: developerProfileURL)
-                }
-
-                LabeledContent("Source") {
-                    Link("nimbold/Firelink", destination: projectURL)
-                }
-            }
-
-            Section("Credits") {
-                LabeledContent("Download engine") {
-                    Link("aria2", destination: aria2URL)
-                }
-
-                Text("Firelink uses aria2c for segmented HTTP, HTTPS, FTP, and SFTP downloads.")
-                    .font(.caption)
-                    .foregroundStyle(.secondary)
-            }
-
             Section("Updates") {
                 LabeledContent("Status") {
                     Label(updateChecker.status.message, systemImage: updateStatusSymbol)
@@ -207,6 +202,26 @@ private struct AboutSettingsPane: View {
                 }
             }
 
+            Section("Developer") {
+                LabeledContent("Created by") {
+                    Text("NimBold")
+                }
+
+                LabeledContent("Source") {
+                    Link("nimbold/Firelink", destination: projectURL)
+                }
+            }
+
+            Section("Credits") {
+                LabeledContent("Download engine") {
+                    Link("aria2", destination: aria2URL)
+                }
+
+                Text("Firelink uses aria2c for segmented HTTP, HTTPS, FTP, and SFTP downloads.")
+                    .font(.caption)
+                    .foregroundStyle(.secondary)
+            }
+
             Section("Legal") {
                 LabeledContent("License") {
                     Link("MIT License", destination: licenseURL)
@@ -284,14 +299,12 @@ private struct AboutSettingsPane: View {
 }
 
 private struct EngineSettingsPane: View {
+    @State private var version = "Checking..."
+
     private var executableURL: URL? {
         Aria2DownloadEngine.findExecutable()
     }
 
-    private var version: String {
-        Aria2DownloadEngine.versionString() ?? "Unavailable"
-    }
-
     var body: some View {
         Form {
             Section {
@@ -323,6 +336,9 @@ private struct EngineSettingsPane: View {
             }
         }
         .formStyle(.grouped)
+        .task {
+            version = await Aria2DownloadEngine.versionString() ?? "Unavailable"
+        }
     }
 }
 
@@ -423,6 +439,7 @@ private struct DownloadSettingsPane: View {
                     .font(.caption)
                     .foregroundStyle(.secondary)
             }
+
         }
         .formStyle(.grouped)
     }
@@ -432,18 +449,21 @@ private struct LocationsSettingsPane: View {
     @EnvironmentObject private var settings: AppSettings
 
     var body: some View {
-        VStack(alignment: .leading, spacing: 14) {
-            ForEach(DownloadCategory.allCases, id: \.self) { category in
-                DirectoryPickerRow(category: category)
-            }
+        Form {
+            Section {
+                ForEach(DownloadCategory.allCases, id: \.self) { category in
+                    DirectoryPickerRow(category: category)
+                }
 
-            HStack {
-                Spacer()
-                Button("Reset Defaults") {
-                    settings.resetDirectories()
+                HStack {
+                    Spacer()
+                    Button("Reset Defaults") {
+                        settings.resetDirectories()
+                    }
                 }
             }
         }
+        .formStyle(.grouped)
     }
 }
 
@@ -454,25 +474,26 @@ private struct DirectoryPickerRow: View {
     @State private var path = ""
 
     var body: some View {
-        HStack(spacing: 10) {
-            Label(category.rawValue, systemImage: category.symbolName)
-                .frame(width: 125, alignment: .leading)
+        LabeledContent {
+            HStack(spacing: 8) {
+                TextField("Folder path", text: Binding(
+                    get: { settings.downloadDirectories[category] ?? path },
+                    set: { newValue in
+                        path = newValue
+                        settings.setDirectory(newValue, for: category)
+                    }
+                ))
+                .textFieldStyle(.roundedBorder)
+                .font(.system(.body, design: .monospaced))
 
-            TextField("Folder path", text: Binding(
-                get: { settings.downloadDirectories[category] ?? path },
-                set: { newValue in
-                    path = newValue
-                    settings.setDirectory(newValue, for: category)
+                Button {
+                    selectFolder()
+                } label: {
+                    Label("Select", systemImage: "folder.badge.plus")
                 }
-            ))
-            .textFieldStyle(.roundedBorder)
-            .font(.system(.body, design: .monospaced))
-
-            Button {
-                selectFolder()
-            } label: {
-                Label("Select", systemImage: "folder.badge.plus")
             }
+        } label: {
+            Label(category.rawValue, systemImage: category.symbolName)
         }
     }
 
@@ -497,62 +518,56 @@ private struct SiteLoginsSettingsPane: View {
     @State private var password = ""
 
     var body: some View {
-        VStack(alignment: .leading, spacing: 16) {
-            Grid(alignment: .leading, horizontalSpacing: 10, verticalSpacing: 10) {
-                GridRow {
-                    Text("URL Pattern")
-                    TextField("*.github.com", text: $urlPattern)
-                        .textFieldStyle(.roundedBorder)
-                }
+        Form {
+            Section("Add Login") {
+                TextField("URL Pattern (e.g., *.github.com)", text: $urlPattern)
+                TextField("Username", text: $username)
+                SecureField("Password", text: $password)
 
-                GridRow {
-                    Text("Username")
-                    TextField("Username", text: $username)
-                        .textFieldStyle(.roundedBorder)
-                }
-
-                GridRow {
-                    Text("Password")
-                    SecureField("Password", text: $password)
-                        .textFieldStyle(.roundedBorder)
-                }
-            }
-
-            HStack {
-                Text(settings.message)
-                    .font(.caption)
-                    .foregroundStyle(.secondary)
-                    .lineLimit(1)
-                Spacer()
-                Button {
-                    settings.addSiteLogin(urlPattern: urlPattern, username: username, password: password)
-                    if settings.message.hasPrefix("Added") {
-                        urlPattern = ""
-                        username = ""
-                        password = ""
+                HStack {
+                    Text(settings.message)
+                        .font(.caption)
+                        .foregroundStyle(.secondary)
+                        .lineLimit(1)
+                    Spacer()
+                    Button {
+                        settings.addSiteLogin(urlPattern: urlPattern, username: username, password: password)
+                        if settings.message.hasPrefix("Added") {
+                            urlPattern = ""
+                            username = ""
+                            password = ""
+                        }
+                    } label: {
+                        Label("Add Login", systemImage: "plus")
                     }
-                } label: {
-                    Label("Add Login", systemImage: "plus")
+                    .buttonStyle(.borderedProminent)
                 }
-                .buttonStyle(.borderedProminent)
             }
 
-            List {
-                ForEach(settings.siteLogins) { login in
-                    HStack {
-                        Image(systemName: "key.horizontal")
-                            .foregroundStyle(.secondary)
-                        Text(login.urlPattern)
-                            .font(.system(.body, design: .monospaced))
-                        Spacer()
-                        Text(login.username)
-                            .foregroundStyle(.secondary)
+            Section("Saved Logins") {
+                if settings.siteLogins.isEmpty {
+                    Text("No saved logins.")
+                        .foregroundStyle(.secondary)
+                } else {
+                    List {
+                        ForEach(settings.siteLogins) { login in
+                            HStack {
+                                Image(systemName: "key.horizontal")
+                                    .foregroundStyle(.secondary)
+                                Text(login.urlPattern)
+                                    .font(.system(.body, design: .monospaced))
+                                Spacer()
+                                Text(login.username)
+                                    .foregroundStyle(.secondary)
+                            }
+                        }
+                        .onDelete(perform: settings.deleteSiteLogins)
                     }
+                    .frame(minHeight: 180)
                 }
-                .onDelete(perform: settings.deleteSiteLogins)
             }
-            .frame(minHeight: 180)
         }
+        .formStyle(.grouped)
     }
 }
 
@@ -571,3 +586,165 @@ private struct PowerSettingsPane: View {
         .formStyle(.grouped)
     }
 }
+
+private struct IntegrationSettingsPane: View {
+    @State private var copiedExtensionURL: URL?
+    @State private var installMessage = ""
+
+    var body: some View {
+        Form {
+            Section {
+                HStack(alignment: .center, spacing: 14) {
+                    Image(systemName: "puzzlepiece.extension")
+                        .resizable()
+                        .frame(width: 48, height: 48)
+                        .foregroundStyle(.orange)
+                        .accessibilityHidden(true)
+
+                    VStack(alignment: .leading, spacing: 4) {
+                        Text("Firefox Extension")
+                            .font(.title2.weight(.semibold))
+                        Text("Capture downloads directly from your browser.")
+                            .foregroundStyle(.secondary)
+                    }
+                }
+                .padding(.vertical, 4)
+            }
+            
+            Section("Installation") {
+                HStack(spacing: 10) {
+                    Button {
+                        copyExtensionToDownloads()
+                    } label: {
+                        Label("Copy to Downloads", systemImage: "folder.badge.plus")
+                    }
+                    
+                    Button {
+                        showCopiedExtensionInFinder()
+                    } label: {
+                        Label("Show Copied Folder", systemImage: "folder.fill")
+                    }
+                    .disabled(copiedExtensionURL == nil)
+
+                    Button {
+                        openFirefoxDebugging()
+                    } label: {
+                        Label("Open Firefox Debugging", systemImage: "link")
+                    }
+                }
+                .buttonStyle(.borderedProminent)
+
+                if !installMessage.isEmpty {
+                    Text(installMessage)
+                        .font(.caption)
+                        .foregroundStyle(.secondary)
+                }
+                
+                Text("Until the official Firefox Add-ons listing is approved, load the extension manually:\n1. Click 'Copy to Downloads'.\n2. Click 'Open Firefox Debugging'.\n3. Click 'This Firefox' on the left sidebar.\n4. Click 'Load Temporary Add-on' and select manifest.json inside Downloads/Firelink Firefox Extension.\n\nKeep the copied folder while Firefox is running. Temporary add-ons are removed when Firefox restarts, so you can delete the folder after restart or after installing the official add-on.")
+                    .font(.caption)
+                    .foregroundStyle(.secondary)
+            }
+            
+            Section("Permissions & Privacy") {
+                Text("The Firelink extension uses download, context menu, storage, active tab, scripting, and local Firelink endpoint permissions. It reads the active tab URL for per-site settings and explicit right-click actions, and forwards download URLs only when you use a Firelink action or enable global capture.")
+                    .font(.caption)
+                    .foregroundStyle(.secondary)
+            }
+        }
+        .formStyle(.grouped)
+        .onAppear {
+            if FileManager.default.fileExists(atPath: downloadsExtensionURL.path) {
+                copiedExtensionURL = downloadsExtensionURL
+            }
+        }
+    }
+    
+    private var downloadsExtensionURL: URL {
+        let downloads = FileManager.default.urls(for: .downloadsDirectory, in: .userDomainMask).first
+            ?? URL(fileURLWithPath: NSHomeDirectory()).appendingPathComponent("Downloads")
+        return downloads.appendingPathComponent("Firelink Firefox Extension", isDirectory: true)
+    }
+
+    private func copyExtensionToDownloads() {
+        guard let sourceURL = bundledFirefoxExtensionURL() else {
+            installMessage = "The bundled Firefox extension folder was not found."
+            return
+        }
+
+        let destinationURL = downloadsExtensionURL
+        do {
+            if FileManager.default.fileExists(atPath: destinationURL.path) {
+                try FileManager.default.removeItem(at: destinationURL)
+            }
+
+            try copyFirefoxExtension(from: sourceURL, to: destinationURL)
+            copiedExtensionURL = destinationURL
+            installMessage = "Copied to \(destinationURL.path). Select manifest.json from this folder in Firefox."
+            showCopiedExtensionInFinder()
+        } catch {
+            installMessage = "Could not copy the extension to Downloads: \(error.localizedDescription)"
+        }
+    }
+
+    private func bundledFirefoxExtensionURL() -> URL? {
+        if let bundled = Bundle.main.url(forResource: "FirefoxExtension", withExtension: nil) {
+            return bundled
+        }
+
+        let sourceFile = URL(fileURLWithPath: #filePath)
+        let projectRoot = sourceFile
+            .deletingLastPathComponent()
+            .deletingLastPathComponent()
+            .deletingLastPathComponent()
+        let sourceTreeExtension = projectRoot.appendingPathComponent("Extensions/Firefox", isDirectory: true)
+        return FileManager.default.fileExists(atPath: sourceTreeExtension.appendingPathComponent("manifest.json").path)
+            ? sourceTreeExtension
+            : nil
+    }
+
+    private func copyFirefoxExtension(from sourceURL: URL, to destinationURL: URL) throws {
+        let fileManager = FileManager.default
+        try fileManager.createDirectory(at: destinationURL, withIntermediateDirectories: true)
+
+        for component in ["background.js", "content.js", "manifest.json", "icons", "popup"] {
+            try fileManager.copyItem(
+                at: sourceURL.appendingPathComponent(component),
+                to: destinationURL.appendingPathComponent(component)
+            )
+        }
+    }
+
+    private func showCopiedExtensionInFinder() {
+        let folderURL = copiedExtensionURL ?? downloadsExtensionURL
+        let manifestURL = folderURL.appendingPathComponent("manifest.json")
+        if FileManager.default.fileExists(atPath: manifestURL.path) {
+            NSWorkspace.shared.activateFileViewerSelecting([manifestURL])
+        } else if FileManager.default.fileExists(atPath: folderURL.path) {
+            NSWorkspace.shared.activateFileViewerSelecting([folderURL])
+        }
+    }
+
+    private func openFirefoxDebugging() {
+        let bundleIDs = [
+            "org.mozilla.firefoxdeveloperedition",
+            "org.mozilla.firefox",
+            "org.mozilla.nightly"
+        ]
+        
+        let workspace = NSWorkspace.shared
+        for id in bundleIDs {
+            if let appURL = workspace.urlForApplication(withBundleIdentifier: id) {
+                let process = Process()
+                process.executableURL = URL(fileURLWithPath: "/usr/bin/open")
+                process.arguments = ["-a", appURL.path, "about:debugging"]
+                try? process.run()
+                return
+            }
+        }
+        
+        // Fallback
+        if let fallbackURL = URL(string: "about:debugging") {
+            workspace.open(fallbackURL)
+        }
+    }
+}

Sources/Firelink/SidebarView.swift

@@ -21,9 +21,37 @@ enum DownloadSidebarFilter: Hashable {
     }
 }
 
+enum SettingsSidebarFilter: String, CaseIterable, Hashable {
+    case downloads = "Downloads"
+    case lookAndFeel = "Look and feel"
+    case network = "Network"
+    case locations = "Locations"
+    case siteLogins = "Site Logins"
+    case power = "Power"
+    case engine = "Engine"
+    case integration = "Integrations"
+    case about = "About"
+
+    var symbolName: String {
+        switch self {
+        case .downloads: "arrow.down.circle"
+        case .lookAndFeel: "paintpalette"
+        case .network: "network"
+        case .locations: "folder"
+        case .siteLogins: "key.fill"
+        case .power: "moon.zzz"
+        case .engine: "terminal"
+        case .integration: "puzzlepiece.extension"
+        case .about: "info.circle"
+        }
+    }
+}
+
 enum SidebarSelection: Hashable {
     case downloads(DownloadSidebarFilter)
     case queue(UUID)
+    case scheduler
+    case speedLimiter
     case settings
 }
 
@@ -70,8 +98,37 @@ struct SidebarView: View {
                 }
                 .buttonStyle(.plain)
             }
+            
+            Section("Tools") {
+                Label("Scheduler", systemImage: "calendar.badge.clock")
+                    .tag(SidebarSelection.scheduler)
+                Label("Speed Limiter", systemImage: "speedometer")
+                    .tag(SidebarSelection.speedLimiter)
+            }
+
         }
         .listStyle(.sidebar)
+        .safeAreaInset(edge: .bottom) {
+            VStack(spacing: 0) {
+                Divider()
+                Button {
+                    selection = .settings
+                } label: {
+                    Label("Settings", systemImage: "gearshape")
+                        .padding(.horizontal, 10)
+                        .padding(.vertical, 8)
+                        .frame(maxWidth: .infinity, alignment: .leading)
+                        .contentShape(Rectangle())
+                }
+                .buttonStyle(.plain)
+                .background(selection == .settings ? Color.accentColor : Color.clear)
+                .foregroundStyle(selection == .settings ? Color.white : Color.primary)
+                .clipShape(RoundedRectangle(cornerRadius: 8))
+                .padding(.horizontal, 8)
+                .padding(.vertical, 8)
+            }
+            .background(.regularMaterial)
+        }
         .alert("Rename Queue", isPresented: Binding(
             get: { queueBeingRenamed != nil },
             set: { isPresented in
@@ -116,30 +173,6 @@ struct SidebarView: View {
         } message: { queue in
             Text("Downloads in \(queue.name) will stay in All and Unfinished, but no longer belong to a queue.")
         }
-        .safeAreaInset(edge: .bottom) {
-            VStack(spacing: 8) {
-                Divider()
-                Button {
-                    selection = .settings
-                } label: {
-                    Label("Settings", systemImage: "gearshape")
-                        .frame(maxWidth: .infinity, alignment: .leading)
-                        .padding(.horizontal, 10)
-                        .padding(.vertical, 7)
-                        .contentShape(RoundedRectangle(cornerRadius: 6))
-                }
-                .buttonStyle(.plain)
-                .background {
-                    if selection == .settings {
-                        RoundedRectangle(cornerRadius: 6)
-                            .fill(Color.accentColor.opacity(0.14))
-                    }
-                }
-                .padding(.horizontal, 8)
-                .padding(.bottom, 8)
-            }
-            .background(.bar)
-        }
     }
 
     private func folderRow(for category: DownloadCategory) -> some View {

Sources/Firelink/SpeedLimiterView.swift

@@ -0,0 +1,132 @@
+import SwiftUI
+
+struct SpeedLimiterView: View {
+    @EnvironmentObject private var settings: AppSettings
+    @State private var showSaveToast: Bool = false
+    
+    // Local state to hold edits before saving
+    @State private var isEnabled: Bool = false
+    @State private var speedLimitKiBPerSecond: Int = 1024
+    
+    var body: some View {
+        VStack(spacing: 0) {
+            headerView
+            Divider()
+            
+            ScrollView {
+                VStack(alignment: .leading, spacing: 24) {
+                    limitSelectionSection
+                        .opacity(isEnabled ? 1.0 : 0.5)
+                        .disabled(!isEnabled)
+                }
+                .padding(24)
+            }
+            .frame(maxWidth: .infinity, alignment: .leading)
+        }
+        .onAppear {
+            loadState()
+        }
+        .overlay {
+            if showSaveToast {
+                toastView
+                    .transition(.move(edge: .bottom).combined(with: .opacity))
+            }
+        }
+    }
+    
+    private var headerView: some View {
+        HStack {
+            Toggle(isOn: $isEnabled) {
+                Text("Speed Limiter")
+                    .font(.title2.weight(.bold))
+            }
+            .toggleStyle(.switch)
+            
+            Spacer()
+            
+            Button("Save Limit") {
+                saveState()
+                withAnimation(.spring()) {
+                    showSaveToast = true
+                }
+                
+                DispatchQueue.main.asyncAfter(deadline: .now() + 2.5) {
+                    withAnimation {
+                        showSaveToast = false
+                    }
+                }
+            }
+            .buttonStyle(.borderedProminent)
+        }
+        .padding(24)
+    }
+    
+    private var limitSelectionSection: some View {
+        VStack(alignment: .leading, spacing: 16) {
+            Text("Global Speed Limit")
+                .font(.headline)
+            
+            Text("This limit applies globally to all active downloads. Individual downloads can also have their own specific limits defined in their properties.")
+                .font(.subheadline)
+                .foregroundStyle(.secondary)
+            
+            HStack {
+                Stepper(value: $speedLimitKiBPerSecond, in: 1...10_485_760, step: 512) {
+                    Text("Maximum Speed:")
+                }
+                
+                TextField("Speed", value: $speedLimitKiBPerSecond, format: .number)
+                    .textFieldStyle(.roundedBorder)
+                    .frame(width: 80)
+                
+                Text("KiB/s")
+                    .foregroundStyle(.secondary)
+            }
+            
+            // Helpful presets
+            HStack(spacing: 12) {
+                Button("1 MB/s") { speedLimitKiBPerSecond = 1024 }
+                Button("5 MB/s") { speedLimitKiBPerSecond = 5120 }
+                Button("10 MB/s") { speedLimitKiBPerSecond = 10240 }
+            }
+            .buttonStyle(.bordered)
+            .padding(.top, 8)
+        }
+    }
+    
+    private var toastView: some View {
+        VStack {
+            Spacer()
+            HStack(spacing: 10) {
+                Image(systemName: "checkmark.circle.fill")
+                    .foregroundColor(.green)
+                Text("Speed Limit Saved")
+                    .fontWeight(.medium)
+            }
+            .padding(.horizontal, 16)
+            .padding(.vertical, 10)
+            .background(.regularMaterial)
+            .clipShape(Capsule())
+            .shadow(radius: 4, y: 2)
+            .padding(.bottom, 30)
+        }
+        .allowsHitTesting(false)
+    }
+    
+    @AppStorage("lastCustomSpeedLimit") private var lastCustomSpeedLimit: Int = 1024
+    
+    private func loadState() {
+        let currentLimit = settings.globalSpeedLimitKiBPerSecond
+        isEnabled = currentLimit > 0
+        speedLimitKiBPerSecond = currentLimit > 0 ? currentLimit : lastCustomSpeedLimit
+    }
+    
+    private func saveState() {
+        // Clamp to ensure it doesn't break aria2
+        let clampedSpeed = max(min(speedLimitKiBPerSecond, 10_485_760), 1)
+        speedLimitKiBPerSecond = clampedSpeed
+        
+        lastCustomSpeedLimit = clampedSpeed
+        settings.globalSpeedLimitKiBPerSecond = isEnabled ? clampedSpeed : 0
+    }
+}

Sources/Firelink/Theme.swift

@@ -0,0 +1,173 @@
+import SwiftUI
+import AppKit
+
+enum AppFontSize: String, Codable, CaseIterable, Identifiable, Sendable {
+    case small = "Small"
+    case standard = "Standard"
+    case large = "Large"
+
+    var id: String { rawValue }
+
+    var dynamicTypeSize: DynamicTypeSize {
+        switch self {
+        case .small: return .xSmall
+        case .standard: return .medium
+        case .large: return .xxLarge
+        }
+    }
+
+    var defaultFont: Font {
+        switch self {
+        case .small:
+            return .system(size: 12)
+        case .standard:
+            return .system(size: 13)
+        case .large:
+            return .system(size: 15)
+        }
+    }
+
+    var controlSize: ControlSize {
+        switch self {
+        case .small:
+            return .small
+        case .standard:
+            return .regular
+        case .large:
+            return .large
+        }
+    }
+}
+
+enum ListRowDensity: String, Codable, CaseIterable, Identifiable, Sendable {
+    case compact = "Compact"
+    case standard = "Standard"
+    case relaxed = "Relaxed"
+
+    var id: String { rawValue }
+
+    var verticalPadding: CGFloat {
+        switch self {
+        case .compact: return 4
+        case .standard: return 8
+        case .relaxed: return 14
+        }
+    }
+}
+
+enum AppTheme: String, Codable, CaseIterable, Identifiable, Sendable {
+    case system = "System Default"
+    case light = "Light"
+    case dark = "Dark"
+    case dracula = "Dracula"
+    case nord = "Nord"
+
+    var id: String { rawValue }
+
+    var theme: Theme {
+        switch self {
+        case .system, .dark:
+            return Theme.system
+        case .light:
+            return Theme.modernLight
+        case .dracula:
+            return Theme.dracula
+        case .nord:
+            return Theme.nord
+        }
+    }
+
+    var appearance: NSAppearance? {
+        switch self {
+        case .system: return nil
+        case .light: return NSAppearance(named: .aqua)
+        case .dark, .dracula, .nord: return NSAppearance(named: .darkAqua)
+        }
+    }
+}
+
+struct Theme: Equatable, Sendable {
+    var background: Color?
+    var secondaryBackground: Color?
+    var text: Color?
+    var secondaryText: Color?
+    var accent: Color?
+
+    static let system = Theme(
+        background: nil,
+        secondaryBackground: nil,
+        text: nil,
+        secondaryText: nil,
+        accent: nil
+    )
+
+    static let modernLight = Theme(
+        background: Color(nsColor: NSColor(calibratedRed: 0.98, green: 0.98, blue: 0.99, alpha: 1.0)),
+        secondaryBackground: Color(nsColor: NSColor(calibratedRed: 0.94, green: 0.94, blue: 0.96, alpha: 1.0)),
+        text: Color.primary,
+        secondaryText: Color.secondary,
+        accent: Color.accentColor
+    )
+
+    static let dracula = Theme(
+        background: Color(nsColor: NSColor(calibratedRed: 0.16, green: 0.16, blue: 0.21, alpha: 1.0)),
+        secondaryBackground: Color(nsColor: NSColor(calibratedRed: 0.27, green: 0.28, blue: 0.35, alpha: 1.0)),
+        text: Color(nsColor: NSColor(calibratedRed: 0.97, green: 0.97, blue: 0.95, alpha: 1.0)),
+        secondaryText: Color(nsColor: NSColor(calibratedRed: 0.38, green: 0.44, blue: 0.58, alpha: 1.0)),
+        accent: Color(nsColor: NSColor(calibratedRed: 1.00, green: 0.47, blue: 0.65, alpha: 1.0)) // Pink
+    )
+
+    static let nord = Theme(
+        background: Color(nsColor: NSColor(calibratedRed: 0.18, green: 0.20, blue: 0.25, alpha: 1.0)), // nord0
+        secondaryBackground: Color(nsColor: NSColor(calibratedRed: 0.23, green: 0.26, blue: 0.32, alpha: 1.0)), // nord1
+        text: Color(nsColor: NSColor(calibratedRed: 0.85, green: 0.87, blue: 0.91, alpha: 1.0)), // nord4
+        secondaryText: Color(nsColor: NSColor(calibratedRed: 0.57, green: 0.63, blue: 0.70, alpha: 1.0)), // nord3
+        accent: Color(nsColor: NSColor(calibratedRed: 0.53, green: 0.75, blue: 0.82, alpha: 1.0)) // nord8
+    )
+}
+
+struct AppThemeModifier: ViewModifier {
+    let theme: AppTheme
+
+    func body(content: Content) -> some View {
+        content
+            .tint(theme.theme.accent)
+            .onAppear {
+                NSApp.appearance = theme.appearance
+            }
+            .onChange(of: theme) { _, newTheme in
+                NSApp.appearance = newTheme.appearance
+            }
+    }
+}
+
+struct AppFontSizeModifier: ViewModifier {
+    let fontSize: AppFontSize
+
+    func body(content: Content) -> some View {
+        content
+            .font(fontSize.defaultFont)
+            .controlSize(fontSize.controlSize)
+            .dynamicTypeSize(fontSize.dynamicTypeSize)
+    }
+}
+
+struct ThemeBackgroundModifier: ViewModifier {
+    let color: Color?
+
+    func body(content: Content) -> some View {
+        if let color {
+            content
+                .scrollContentBackground(.hidden)
+                .background(color)
+        } else {
+            content
+        }
+    }
+}
+
+extension View {
+    func themeBackground(_ color: Color?) -> some View {
+        modifier(ThemeBackgroundModifier(color: color))
+    }
+}

Sources/Firelink/TrayMenuView.swift

@@ -0,0 +1,41 @@
+import SwiftUI
+
+struct TrayMenuView: View {
+    @Environment(\.openWindow) private var openWindow
+    @EnvironmentObject private var controller: DownloadController
+
+    var body: some View {
+        Button("Show main window") {
+            openWindow(id: "main")
+            NSApp.activate(ignoringOtherApps: true)
+        }
+
+        Button("Add downloads") {
+            openWindow(id: "add-downloads")
+            NSApp.activate(ignoringOtherApps: true)
+        }
+
+        Menu("Start queue") {
+            ForEach(controller.queues) { queue in
+                Button(queue.name) {
+                    controller.startQueue(queueID: queue.id)
+                }
+            }
+        }
+
+        Button("Stop downloads") {
+            for download in controller.downloads where download.status == .downloading {
+                controller.pause(download)
+            }
+        }
+
+        Divider()
+
+        Button("Exit") {
+            NSApplication.shared.terminate(nil)
+        }
+        .onReceive(NotificationCenter.default.publisher(for: NSNotification.Name("OpenAddDownloadsWindow"))) { _ in
+            openWindow(id: "add-downloads")
+        }
+    }
+}