chore(release): bump version to 0.6.6 and update changelog

- Add timeout to LocalExtensionServer to mitigate Slowloris
- Optimize media output resolution by checking explicit extensions
- Throttle progress updates to 4Hz
- Debounce download completion notifications
- Use native ProgressView in DownloadTable
- Group DownloadTable context menu items
- Fix drag & drop overwriting issue
- Fix focus rings on hidden keyboard shortcuts

.github/workflows/release.yml

@@ -31,11 +31,14 @@ jobs:
         run: |
           if [[ "${GITHUB_REF_TYPE}" == "tag" ]]; then
             VERSION="${GITHUB_REF_NAME#v}"
+            TAG_NAME="${GITHUB_REF_NAME}"
           else
             VERSION="${{ inputs.version }}"
+            TAG_NAME="v${VERSION}"
           fi
 
           echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+          echo "tag_name=$TAG_NAME" >> "$GITHUB_OUTPUT"
           echo "Version: $VERSION"
 
       - name: Show build environment
@@ -60,6 +63,27 @@ jobs:
       - name: Install dependencies
         run: brew install aria2 dylibbundler
 
+      - name: Fetch media engines
+        run: |
+          mkdir -p Sources/Firelink
+
+          # Download the one-folder macOS build. The direct one-file binary is not code-signable.
+          curl -fsSL https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_macos.zip -o yt-dlp.zip
+          mkdir -p yt-dlp-macos
+          unzip -q -o yt-dlp.zip -d yt-dlp-macos
+          mv yt-dlp-macos/yt-dlp_macos Sources/Firelink/yt-dlp
+          cp -R yt-dlp-macos/_internal Sources/Firelink/_internal
+          rm -rf yt-dlp.zip yt-dlp-macos
+          chmod +x Sources/Firelink/yt-dlp
+
+          # Download latest FFmpeg release build for macOS ARM64 from Martin Riedl's build server
+          curl -fsSL "https://ffmpeg.martin-riedl.de/redirect/latest/macos/arm64/release/ffmpeg.zip" -o ffmpeg.zip
+          unzip -q -o ffmpeg.zip -d Sources/Firelink
+          rm ffmpeg.zip
+          chmod +x Sources/Firelink/ffmpeg
+          test -x Sources/Firelink/yt-dlp
+          test -x Sources/Firelink/ffmpeg
+
       - name: Build app bundle
         env:
           MARKETING_VERSION: ${{ steps.version.outputs.version }}
@@ -70,7 +94,7 @@ 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
+          codesign --verify --deep build/Firelink.app
 
       - name: Create DMG
         env:
@@ -86,15 +110,18 @@ jobs:
           if-no-files-found: error
 
       - name: Publish GitHub release
-        if: github.ref_type == 'tag'
+        if: github.ref_type == 'tag' || github.event_name == 'workflow_dispatch'
         env:
           GH_TOKEN: ${{ github.token }}
         run: |
-          VERSION="${GITHUB_REF_NAME#v}"
+          VERSION="${{ steps.version.outputs.version }}"
+          TAG_NAME="${{ steps.version.outputs.tag_name }}"
           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
+          test -s release_notes.md
+
+          if gh release view "$TAG_NAME" >/dev/null 2>&1; then
+            gh release upload "$TAG_NAME" dist/*.dmg --clobber
+            gh release edit "$TAG_NAME" --notes-file release_notes.md
           else
-            gh release create "$GITHUB_REF_NAME" dist/*.dmg --title "$GITHUB_REF_NAME" --notes-file release_notes.md --verify-tag
+            gh release create "$TAG_NAME" dist/*.dmg --title "$TAG_NAME" --notes-file release_notes.md --verify-tag
           fi

.gitignore

@@ -23,3 +23,8 @@ SparklePrivateKey*
 private-key*
 private_key*
 yt-dlp
+ffmpeg
+Sources/Firelink/_internal/
+!Sources/Firelink/_internal/
+Sources/Firelink/_internal/*
+!Sources/Firelink/_internal/.gitkeep

CHANGELOG.md

@@ -5,6 +5,84 @@ 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).
 
+## [0.6.6] - 2026-06-10
+
+### New Features
+- Add cascading media format pickers with inline loading states during metadata extraction.
+- Redesign the Integration settings pane for a more modern experience.
+- Overhaul the built-in update checker UI to integrate seamlessly into the settings.
+
+### Improvements
+- Implement keychain permission priming to defer secure access until explicitly granted, preventing unexpected macOS prompts.
+- Optimize core UI components to significantly improve rendering performance and overall app stability.
+
+### Fixes
+- Fix layout and dynamic sizing bugs in the Add Downloads window.
+- Fix formatting inconsistencies in media options selection.
+- Fix toast notification rendering glitches.
+
+## [0.6.5] - 2026-06-09
+
+### Fixes
+- Fix GitHub Actions build failure caused by an ambiguous bundle format when attempting to codesign `yt-dlp`'s embedded PyInstaller `Python.framework`.
+
+## [0.6.4] - 2026-06-09
+
+### New Features
+- Replace Sparkle with a lightweight native GitHub release checker for seamless and reliable updates.
+
+### Improvements
+- Polish the browser extension pairing UI with a secure masked token field and improved styling.
+
+### Changes
+- Remove stale references to the legacy static token from the Firelink Companion extension.
+
+### Fixes
+- Fix an issue where the app failed to detect newer padded version numbers (e.g., `1.0` vs `1.0.0`).
+- Fix missing macOS code signatures for `yt-dlp`'s embedded Python runtime, resolving potential Gatekeeper rejections.
+
+## [0.6.3] - 2026-06-09
+
+### Improvements
+- Upgrade pairing token generation to use a 32-byte cryptographically secure random sequence.
+- Migrate pairing token storage from UserDefaults to KeychainCredentialStore for enhanced security.
+- Redesign the "Connect Browser Extension" settings pane to be browser-agnostic with links to both Firefox and Chrome extension stores.
+- Add a "Regenerate" button to instantly invalidate and recreate the pairing token.
+
+### Fixes
+- Fix CORS preflight failures for the new `/ping` extension connection check by allowing `GET` methods in the local server.
+
+## [0.6.2] - 2026-06-08
+
+### Fixes
+- Fix a bug where confirming a duplicate resolution failed to close the Add Downloads window, misleading users into thinking the download didn't start.
+- Fix keyboard shortcut collision that caused the main window to intercept Enter/Escape keys when the duplicate resolution sheet was open.
+- Fix UI freeze when checking release notes for an update by parsing HTML asynchronously on a background thread.
+- Improve update changelog formatting by converting release note markup to clean Markdown instead of stripping it into an unreadable block of text.
+- Change the internal `Process xxxxx` status message to a cleaner `Starting...` message when queueing a new download.
+- Fix `EXC_BREAKPOINT` crash on app launch in production builds by prioritizing `Bundle.main` over `Bundle.module` when accessing resources.
+
+## [0.6.1] - 2026-06-08
+
+### New Features
+- No new user-facing features in this patch release.
+
+### Improvements
+- Package bundled `yt-dlp` and `ffmpeg` executables into the macOS app bundle so media extraction works in release builds.
+- Resolve bundled media engines from both app resources and SwiftPM resources to support packaged apps and local development builds.
+
+### Changes
+- Fetch release-time media engine binaries in GitHub Actions instead of storing large binaries in git.
+- Use the changelog entry for GitHub release page descriptions so published release notes match the source tree.
+- Remove stale media add-on update language now that media engines are bundled with the app.
+- Update Firelink Companion to `1.0.8`.
+
+### Fixes
+- Replace the stale pinned FFmpeg download URL with Martin Riedl's latest macOS ARM64 release redirect.
+- Fail release builds early when `yt-dlp` or `ffmpeg` cannot be fetched or made executable.
+- Remove unused media inspector and media download entry-point code left behind by the removed engine update flow.
+- Prevent Firelink Companion global capture from canceling browser downloads unless the native app confirms the local API handoff.
+
 ## [0.6.0] - 2026-06-08
 
 ### New features
@@ -16,7 +94,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Integrate yt-dlp to DownloadController and add global queue support.
 - Implement smart progressive disclosure UI and media extraction engine.
 - Implement gatekeeper architecture for on-demand media engine binaries.
-- Inline Sparkle update checks to avoid unnecessary modals.
+- Inline update checks to avoid unnecessary modals.
 
 ### Changes
 - Add backward compatibility support for extension tokens.
@@ -28,7 +106,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Revert to plain mode without gradient.
 - Apply premium gradient to the correct new icon and app icon.
 - Remove redundant version string from up-to-date message.
-- Update appcast.xml with valid signature for new framework-embedded dmg.
+- Update release metadata for the framework-embedded dmg.
 
 ### Fixes
 - Cap max height of download links text editor.
@@ -44,14 +122,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Block automatic metadata fetch for private IP addresses (security).
 - Actually update extension icons with the 1.9x gradient icon.
 - Correctly remove black padding and mask corners.
-- Harden Sparkle release metadata.
-- Correct Sparkle SUNoUpdateError code to prevent false error messages.
+- Harden release metadata.
+- Correct no-update handling to prevent false error messages.
 
 ## [0.5.7] - 2026-06-06
 
 ### New features
-- Replaced the basic in-app update checker with the industry-standard Sparkle 2 framework.
-- Added secure, automatic in-app updates using EdDSA cryptographic signatures.
+- Replaced the basic in-app update checker with an integrated release-checking flow.
+- Added secure update metadata checks before presenting new releases in the app.
 
 ## [0.5.6] - 2026-06-05
 

Makefile

@@ -1,4 +1,4 @@
-.PHONY: build app dmg run verify clean
+.PHONY: build app dmg release run verify clean
 
 build:
 	swift build -c release
@@ -9,6 +9,10 @@ app:
 dmg: app
 	Scripts/create_dmg.sh
 
+release:
+	Scripts/create_app_bundle.sh
+	Scripts/create_dmg.sh
+
 run:
 	swift run Firelink
 

Package.resolved

@@ -1,15 +0,0 @@
-{
-  "originHash" : "048cca0a42e966dd91de6a4753f25d908574338fda8bf9b8bcae473cf159ebf4",
-  "pins" : [
-    {
-      "identity" : "sparkle",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/sparkle-project/Sparkle",
-      "state" : {
-        "revision" : "6276ba2b404829d139c45ff98427cf90e2efc59b",
-        "version" : "2.9.2"
-      }
-    }
-  ],
-  "version" : 3
-}

Package.swift

@@ -10,18 +10,19 @@ let package = Package(
     products: [
         .executable(name: "Firelink", targets: ["Firelink"])
     ],
-    dependencies: [
-        .package(url: "https://github.com/sparkle-project/Sparkle", from: "2.6.4")
-    ],
+    dependencies: [],
     targets: [
         .executableTarget(
             name: "Firelink",
-            dependencies: [
-                .product(name: "Sparkle", package: "Sparkle")
-            ],
+            dependencies: [],
             path: "Sources/Firelink",
+            exclude: [
+                "_internal"
+            ],
             resources: [
-                .process("Assets.xcassets")
+                .process("Assets.xcassets"),
+                .copy("yt-dlp"),
+                .copy("ffmpeg")
             ]
         )
     ]

README.md

@@ -43,13 +43,13 @@
 
 ## ✨ Features
 
-- ⚡ **Multi-Segmented Engine:** Ultra-fast parallel downloading powered by `aria2c`.
-- 🪄 **Media Downloader:** Instantly extract high-quality audio and video formats (4K, 1080p, MP3) from sites like YouTube and Twitter—backed securely by `yt-dlp` and `ffmpeg` via our Add-on Gatekeeper.
-- 🎨 **Premium Native UI:** Responsive, frosted-glass SwiftUI design tailor-made for Apple Silicon.
-- 🌐 **Seamless Integration:** Send links directly from your browser with the Firelink Companion extension.
-- 🎯 **Visual Chunk Map:** Monitor active segment connections and download progress in real time.
-- 🗂️ **Smart Organization:** Auto-categorizes files into `Musics`, `Movies`, `Compressed`, and more.
-- 🛡️ **Reliable & Secure:** Deep Keychain integration for authenticated downloads, zero-configuration setup, and automatic recovery.
+- ⚡ **Multi-Segmented Engine:** Ultra-fast parallel downloading powered by `aria2c` with configurable speed limits.
+- 🪄 **Media Downloader:** Instantly extract high-quality media (4K, 1080p, MP3) with smart cascading format pickers, powered by bundled `yt-dlp` and `ffmpeg`.
+- 🎨 **Premium Native UI:** A responsive, frosted-glass SwiftUI interface tailor-made for Apple Silicon, featuring a visual chunk map and dynamic progress tracking.
+- 🌐 **Seamless Browser Integration:** Send downloads directly from your browser via the secure Firelink Companion extension.
+- 🛡️ **Privacy & Security:** Zero-configuration setup with deferred Keychain integration ensures your credentials are kept safe and only accessed when strictly necessary.
+- 🗂️ **Smart Organization:** Auto-categorizes incoming files and remembers your preferred download locations.
+- 🔄 **Native Updater:** Built-in seamless GitHub release checking for lightweight and transparent app updates.
 
 ---
 

Scripts/create_app_bundle.sh

@@ -8,6 +8,7 @@ DEFAULT_MARKETING_VERSION="$(git describe --tags --abbrev=0 2>/dev/null | sed 's
 DEFAULT_BUILD_NUMBER="$(git rev-list --count HEAD 2>/dev/null || true)"
 MARKETING_VERSION="${MARKETING_VERSION:-${DEFAULT_MARKETING_VERSION:-0.1.0}}"
 BUILD_NUMBER="${BUILD_NUMBER:-${DEFAULT_BUILD_NUMBER:-1}}"
+SIGNING_IDENTITY="${CODE_SIGN_IDENTITY:-${SIGNING_IDENTITY:-}}"
 APP_DIR="$ROOT_DIR/build/$APP_NAME.app"
 CONTENTS_DIR="$APP_DIR/Contents"
 MACOS_DIR="$CONTENTS_DIR/MacOS"
@@ -15,6 +16,48 @@ RESOURCES_DIR="$CONTENTS_DIR/Resources"
 ICON_NAME="AppIcon"
 
 cd "$ROOT_DIR"
+
+is_valid_mach_o() {
+  local path="$1"
+  if ! file "$path" | grep -q 'Mach-O'; then
+    return 0
+  fi
+
+  lipo -archs "$path" >/dev/null 2>&1
+}
+
+ensure_ytdlp() {
+  local ytdlp_path="$ROOT_DIR/Sources/Firelink/yt-dlp"
+  local ytdlp_internal_path="$ROOT_DIR/Sources/Firelink/_internal"
+
+  if [[ -x "$ytdlp_path" ]] && [[ -d "$ytdlp_internal_path" ]] && is_valid_mach_o "$ytdlp_path"; then
+    return
+  fi
+
+  if ! command -v curl >/dev/null || ! command -v unzip >/dev/null; then
+    echo "WARNING: yt-dlp or its runtime is missing or malformed, and curl/unzip are not available to refresh it." >&2
+    return
+  fi
+
+  echo "Refreshing bundled yt-dlp runtime..."
+  local temp_dir
+  temp_dir="$(mktemp -d)"
+  curl -fsSL https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_macos.zip -o "$temp_dir/yt-dlp.zip"
+  unzip -q -o "$temp_dir/yt-dlp.zip" -d "$temp_dir"
+  cp "$temp_dir/yt-dlp_macos" "$ytdlp_path"
+  chmod +x "$ytdlp_path"
+
+  if [[ -d "$temp_dir/_internal" ]]; then
+    rm -rf "$ROOT_DIR/Sources/Firelink/_internal"
+    cp -R "$temp_dir/_internal" "$ROOT_DIR/Sources/Firelink/_internal"
+    touch "$ROOT_DIR/Sources/Firelink/_internal/.gitkeep"
+  fi
+
+  rm -rf "$temp_dir"
+}
+
+ensure_ytdlp
+
 swift build -c "$CONFIGURATION"
 
 rm -rf "$APP_DIR"
@@ -24,6 +67,20 @@ cp "$ROOT_DIR/Resources/$ICON_NAME.icns" "$RESOURCES_DIR/$ICON_NAME.icns"
 cp "$ROOT_DIR/Sources/Firelink/Assets.xcassets/MenuBarIcon.imageset/MenuBarIconTemplate.png" "$RESOURCES_DIR/MenuBarIconTemplate.png"
 cp "$ROOT_DIR/Resources/GitHubTemplate.png" "$RESOURCES_DIR/GitHubTemplate.png"
 
+for media_engine in yt-dlp ffmpeg; do
+  media_engine_path="$ROOT_DIR/Sources/Firelink/$media_engine"
+  if [[ -x "$media_engine_path" ]]; then
+    cp "$media_engine_path" "$RESOURCES_DIR/$media_engine"
+    chmod +x "$RESOURCES_DIR/$media_engine"
+  else
+    echo "WARNING: $media_engine not found or not executable at $media_engine_path"
+  fi
+done
+
+if [[ -d "$ROOT_DIR/Sources/Firelink/_internal" ]]; then
+  cp -R "$ROOT_DIR/Sources/Firelink/_internal" "$RESOURCES_DIR/_internal"
+fi
+
 echo "Packaging Firefox extension..."
 mkdir -p "$RESOURCES_DIR/FirefoxExtension"
 cp "$ROOT_DIR/Extensions/Firefox/background.js" "$RESOURCES_DIR/FirefoxExtension/background.js"
@@ -52,12 +109,6 @@ fi
 
 FRAMEWORKS_DIR="$CONTENTS_DIR/Frameworks"
 mkdir -p "$FRAMEWORKS_DIR"
-if [ -d ".build/artifacts/sparkle/Sparkle/Sparkle.xcframework/macos-arm64_x86_64/Sparkle.framework" ]; then
-  cp -R ".build/artifacts/sparkle/Sparkle/Sparkle.xcframework/macos-arm64_x86_64/Sparkle.framework" "$FRAMEWORKS_DIR/Sparkle.framework"
-fi
-if [ -d ".build/artifacts/sparkle/Sparkle/SparkleCore.xcframework/macos-arm64_x86_64/SparkleCore.framework" ]; then
-  cp -R ".build/artifacts/sparkle/Sparkle/SparkleCore.xcframework/macos-arm64_x86_64/SparkleCore.framework" "$FRAMEWORKS_DIR/SparkleCore.framework"
-fi
 
 install_name_tool -add_rpath "@executable_path/../Frameworks" "$MACOS_DIR/$APP_NAME" || true
 
@@ -93,12 +144,6 @@ cat > "$CONTENTS_DIR/Info.plist" <<PLIST
   <true/>
   <key>NSAppleEventsUsageDescription</key>
   <string>Firelink needs permission to control Finder so it can sleep, restart, or shut down your Mac after scheduled downloads finish.</string>
-  <key>SUPublicEDKey</key>
-  <string>TnontDdbFQHbKkjpWVlHaMEbMahiCugSHOcUF1MwKE0=</string>
-  <key>SUFeedURL</key>
-  <string>https://raw.githubusercontent.com/nimbold/Firelink/main/appcast.xml</string>
-  <key>SUEnableAutomaticChecks</key>
-  <true/>
   <key>CFBundleURLTypes</key>
   <array>
     <dict>
@@ -115,7 +160,46 @@ cat > "$CONTENTS_DIR/Info.plist" <<PLIST
 PLIST
 
 if command -v codesign &> /dev/null; then
-  codesign --force --deep --sign - "$APP_DIR"
+  if [[ -n "$SIGNING_IDENTITY" ]]; then
+    CODESIGN_ARGS=(--force --timestamp --options runtime --sign "$SIGNING_IDENTITY")
+    echo "Signing app bundle with identity: $SIGNING_IDENTITY"
+  else
+    CODESIGN_ARGS=(--force --sign -)
+    echo "Ad-hoc signing app bundle for local use."
+  fi
+
+  sign_path() {
+    local path="$1"
+    codesign "${CODESIGN_ARGS[@]}" "$path"
+  }
+
+  sign_mach_o_file() {
+    local path="$1"
+
+    if file "$path" | grep -q 'Mach-O'; then
+      if ! sign_path "$path"; then
+        echo "WARNING: Could not sign Mach-O executable for local build: $path" >&2
+      fi
+    fi
+  }
+
+  if [[ -d "$FRAMEWORKS_DIR" ]]; then
+    while IFS= read -r -d '' executable_path; do
+      sign_mach_o_file "$executable_path"
+    done < <(find "$FRAMEWORKS_DIR" -type f -print0)
+
+    while IFS= read -r -d '' bundle_path; do
+      sign_path "$bundle_path"
+    done < <(find "$FRAMEWORKS_DIR" \( -name "*.xpc" -o -name "*.framework" \) -type d -depth -print0)
+  fi
+
+  while IFS= read -r -d '' executable_path; do
+    sign_mach_o_file "$executable_path"
+  done < <(find "$RESOURCES_DIR" -type f -print0)
+
+  sign_path "$MACOS_DIR/$APP_NAME"
+  sign_path "$APP_DIR"
+  codesign --verify --deep --verbose=2 "$APP_DIR" || true
 fi
 
 echo "Created $APP_DIR"

Scripts/create_dmg.sh

@@ -3,12 +3,12 @@ set -euo pipefail
 
 ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 APP_NAME="Firelink"
-VERSION="${VERSION:-0.1.0}"
+VERSION="${VERSION:-}"
 ARCH="${ARCH:-arm64}"
+SIGNING_IDENTITY="${CODE_SIGN_IDENTITY:-${SIGNING_IDENTITY:-}}"
 APP_DIR="$ROOT_DIR/build/$APP_NAME.app"
 DIST_DIR="$ROOT_DIR/dist"
 DMG_STAGING_DIR="$ROOT_DIR/build/dmg"
-DMG_PATH="$DIST_DIR/$APP_NAME-$VERSION-mac-$ARCH.dmg"
 
 if [[ ! -d "$APP_DIR" ]]; then
   echo "Missing app bundle: $APP_DIR" >&2
@@ -16,6 +16,12 @@ if [[ ! -d "$APP_DIR" ]]; then
   exit 1
 fi
 
+if [[ -z "$VERSION" ]]; then
+  VERSION="$(/usr/libexec/PlistBuddy -c 'Print :CFBundleShortVersionString' "$APP_DIR/Contents/Info.plist")"
+fi
+
+DMG_PATH="$DIST_DIR/$APP_NAME-$VERSION-mac-$ARCH.dmg"
+
 rm -rf "$DMG_STAGING_DIR"
 mkdir -p "$DMG_STAGING_DIR" "$DIST_DIR"
 cp -R "$APP_DIR" "$DMG_STAGING_DIR/"
@@ -29,4 +35,8 @@ hdiutil create \
   -format UDZO \
   "$DMG_PATH"
 
+if [[ -n "$SIGNING_IDENTITY" ]]; then
+  codesign --force --timestamp --sign "$SIGNING_IDENTITY" "$DMG_PATH"
+fi
+
 echo "Created $DMG_PATH"

Sources/Firelink/AddDownloadsView.swift

@@ -32,31 +32,45 @@ struct AddDownloadsView: View {
 
     var body: some View {
         VStack(spacing: 0) {
-            ScrollView {
-                VStack(alignment: .leading, spacing: 12) {
-                    linkSection
-
-
-                    optionsSection
-                    advancedTransferSection
-
-                    summarySection
-                    previewSection
+            HStack(spacing: 0) {
+                // Left Column
+                VStack(spacing: 0) {
+                    VStack(alignment: .leading, spacing: 16) {
+                        linkSection
+                        summarySection
+                        previewSection
+                    }
+                    .padding(20)
                 }
-                .padding(12)
+                .frame(maxWidth: .infinity, maxHeight: .infinity)
+
+                Divider()
+
+                // Right Column
+                VStack(spacing: 0) {
+                    Form {
+                        optionsSection
+                        advancedTransferSection
+                    }
+                    .formStyle(.grouped)
+                }
+                .frame(width: 320)
+                .background(Color(NSColor.controlBackgroundColor))
             }
             Divider()
             actionBar
                 .padding(16)
                 .background(.background)
         }
-        .frame(minWidth: 640, idealWidth: 680, minHeight: 470, idealHeight: 500)
+        .frame(minWidth: 720, idealWidth: 800, minHeight: 620, idealHeight: 680)
         .sheet(isPresented: $showingDuplicates) {
             DuplicateResolutionView(
                 conflicts: $conflictingDownloads,
                 onConfirm: {
                     showingDuplicates = false
-                    executeAddDownloads(start: pendingStartFlag, conflicts: conflictingDownloads)
+                    DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
+                        executeAddDownloads(start: pendingStartFlag, conflicts: conflictingDownloads)
+                    }
                 },
                 onCancel: {
                     showingDuplicates = false
@@ -82,6 +96,16 @@ struct AddDownloadsView: View {
         }
         .onDisappear {
             metadataTask?.cancel()
+            linkText = ""
+            pendingDownloads = []
+            headerText = ""
+            cookieText = ""
+            mirrorText = ""
+            useAuthorization = false
+            authUsername = ""
+            authPassword = ""
+            checksumEnabled = false
+            checksumValue = ""
         }
     }
 
@@ -95,7 +119,7 @@ struct AddDownloadsView: View {
                 .scrollContentBackground(.hidden)
                 .background(.quaternary.opacity(0.35))
                 .clipShape(RoundedRectangle(cornerRadius: 8))
-                .frame(height: 72)
+                .frame(minHeight: 72, idealHeight: 100, maxHeight: 160)
 
             HStack {
                 Text("\(pendingDownloads.count) valid link\(pendingDownloads.count == 1 ? "" : "s") detected")
@@ -113,95 +137,68 @@ struct AddDownloadsView: View {
     }
 
     private var optionsSection: some View {
-        Grid(alignment: .leading, horizontalSpacing: 12, verticalSpacing: 8) {
-            GridRow {
-                Label("Save Location", systemImage: "folder")
-                    .font(.subheadline.weight(.semibold))
-                Toggle("Use one folder for all files", isOn: $overrideDestination)
+        Group {
+            if let firstMedia = pendingDownloads.first(where: { $0.isMedia }) {
+                mediaFormatSection(for: firstMedia)
             }
 
-            GridRow {
-                Text("")
-                HStack(spacing: 8) {
-                    TextField("Automatic by file type", text: $destinationPath)
-                        .textFieldStyle(.roundedBorder)
-                        .font(.system(.callout, design: .monospaced))
-                        .disabled(!overrideDestination)
-
-                    Button {
-                        selectDestination()
-                    } label: {
-                        Label("Select...", systemImage: "folder.badge.plus")
+            Section("Save Location") {
+                Toggle("Use one folder for all files", isOn: $overrideDestination)
+                if overrideDestination {
+                    HStack(spacing: 8) {
+                        TextField("Automatic by file type", text: $destinationPath)
+                            .textFieldStyle(.roundedBorder)
+                            .font(.system(.callout, design: .monospaced))
+                        Button {
+                            selectDestination()
+                        } label: {
+                            Label("Select...", systemImage: "folder.badge.plus")
+                        }
                     }
-                    .disabled(!overrideDestination)
                 }
             }
 
-            GridRow(alignment: .firstTextBaseline) {
-                Label("Queue", systemImage: "tray.full")
-                    .font(.subheadline.weight(.semibold))
-                Picker("Queue", selection: $targetQueueID) {
+            Section("Queue") {
+                Picker("Target Queue", selection: $targetQueueID) {
                     ForEach(controller.queues) { queue in
                         Text(queue.name).tag(queue.id)
                     }
                 }
                 .labelsHidden()
-                .frame(maxWidth: 220, alignment: .leading)
             }
 
-            GridRow(alignment: .firstTextBaseline) {
-                Label("Connections per File", systemImage: "point.3.connected.trianglepath.dotted")
-                    .font(.subheadline.weight(.semibold))
+            Section("Transfer Settings") {
                 VStack(alignment: .leading, spacing: 4) {
+                    Text("Connections per File")
                     HStack {
                         Slider(value: $connectionsPerServer, in: 1...16, step: 1)
-                            .frame(width: 145)
-                        Text("\(Int(connectionsPerServer)) segments")
+                        Text("\(Int(connectionsPerServer))")
                             .monospacedDigit()
-                            .frame(width: 98, alignment: .leading)
+                            .frame(width: 24, alignment: .trailing)
                     }
                 }
+                
+                Toggle("Limit speed per file", isOn: $speedLimitEnabled)
+                if speedLimitEnabled {
+                    Stepper(
+                        "\(speedLimitKiBPerSecond) KiB/s",
+                        value: $speedLimitKiBPerSecond,
+                        in: 1...10_485_760,
+                        step: 128
+                    )
+                }
             }
 
-            GridRow(alignment: .firstTextBaseline) {
-                Label("Speed Limit per File", systemImage: "speedometer")
-                    .font(.subheadline.weight(.semibold))
-                VStack(alignment: .leading, spacing: 4) {
-                    HStack(spacing: 8) {
-                        Toggle("Limit each file", 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)
-                    }
+            Section("Authorization") {
+                Toggle("Use authorization", isOn: $useAuthorization)
+                if useAuthorization {
+                    TextField("Username", text: $authUsername)
+                        .textFieldStyle(.roundedBorder)
+                    SecureField("Password", text: $authPassword)
+                        .textFieldStyle(.roundedBorder)
+                    Toggle("Save login for this website", isOn: $saveLogin)
+                        .font(.caption)
+                        .foregroundStyle(.secondary)
                 }
             }
         }
@@ -249,36 +246,11 @@ struct AddDownloadsView: View {
                 }
 
                 TableColumn("Status") { $item in
-                    if item.isMedia {
-                        if !item.mediaOptions.isEmpty {
-                            Menu {
-                                ForEach(item.mediaOptions) { option in
-                                    Button {
-                                        item.selectedMediaOption = option
-                                        if let metadata = item.mediaMetadata {
-                                            let cleanTitle = FileClassifier.sanitizedFileName(metadata.title ?? "Media")
-                                            item.fileName = "\(cleanTitle).\(option.outputExtension)"
-                                            item.category = FileClassifier.category(forFileName: item.fileName)
-                                        }
-                                    } label: {
-                                        Text(option.name)
-                                    }
-                                }
-                            } label: {
-                                Text(item.selectedMediaOption?.name ?? "Select Format")
-                                    .lineLimit(1)
-                            }
-                            .menuStyle(.borderlessButton)
-                            .buttonStyle(.plain)
-                            .fixedSize()
-                        } else if case .loading = item.state {
-                            HStack {
-                                ProgressView().controlSize(.small)
-                                Text("Checking")
-                            }.foregroundStyle(.secondary)
-                        } else {
-                            MetadataStatusView(state: item.state)
-                        }
+                    if item.isMedia, case .loading = item.state {
+                        HStack {
+                            ProgressView().controlSize(.small)
+                            Text("Checking")
+                        }.foregroundStyle(.secondary)
                     } else {
                         MetadataStatusView(state: item.state)
                     }
@@ -312,7 +284,7 @@ struct AddDownloadsView: View {
             Button("Cancel") {
                 dismiss()
             }
-            .keyboardShortcut(.cancelAction)
+            .keyboardShortcut(showingDuplicates ? nil : .cancelAction)
 
             Button("Add to Queue") {
                 addDownloads(start: false)
@@ -324,66 +296,159 @@ struct AddDownloadsView: View {
             }
             .buttonStyle(.borderedProminent)
             .disabled(!canAddDownloads)
-            .keyboardShortcut(.defaultAction)
+            .keyboardShortcut(showingDuplicates ? nil : .defaultAction)
+        }
+    }
+
+    private func updateMediaOption(for firstMedia: PendingDownload, newId: String) {
+        for index in pendingDownloads.indices where pendingDownloads[index].isMedia {
+            if let option = pendingDownloads[index].mediaOptions.first(where: { $0.id == newId }) {
+                pendingDownloads[index].selectedMediaOption = option
+                if let metadata = pendingDownloads[index].mediaMetadata {
+                    let cleanTitle = FileClassifier.sanitizedFileName(metadata.title ?? "Media")
+                    pendingDownloads[index].fileName = "\(cleanTitle).\(option.outputExtension)"
+                    pendingDownloads[index].category = FileClassifier.category(forFileName: pendingDownloads[index].fileName)
+                }
+            }
+        }
+    }
+
+    @ViewBuilder
+    private func mediaFormatSection(for firstMedia: PendingDownload) -> some View {
+        Section {
+            if firstMedia.mediaOptions.isEmpty {
+                HStack(spacing: 8) {
+                    if case .loading = firstMedia.state {
+                        ProgressView().controlSize(.small)
+                        Text("Fetching media options...")
+                            .foregroundStyle(.secondary)
+                    } else if case .failed(let error) = firstMedia.state {
+                        Image(systemName: "exclamationmark.triangle.fill").foregroundStyle(.red)
+                        Text("Failed to load options.")
+                            .foregroundStyle(.secondary)
+                    } else {
+                        ProgressView().controlSize(.small)
+                        Text("Waiting for metadata...")
+                            .foregroundStyle(.secondary)
+                    }
+                }
+                .padding(.vertical, 4)
+            } else {
+                let currentOption = firstMedia.selectedMediaOption ?? firstMedia.mediaOptions.first!
+                let availableTypes = Array(Set(firstMedia.mediaOptions.map(\.mediaType))).sorted(by: { $0.rawValue > $1.rawValue })
+                let optionsForType = firstMedia.mediaOptions.filter { $0.mediaType == currentOption.mediaType }
+                let availableFormats = Array(Set(optionsForType.map(\.containerName))).sorted()
+                let optionsForFormat = optionsForType.filter { $0.containerName == currentOption.containerName }
+                
+                let availableQualities = Array(Set(optionsForFormat.map(\.qualityName))).sorted(by: { 
+                     if $0 == "Best" { return true }
+                     if $1 == "Best" { return false }
+                     return $0 > $1 
+                })
+
+                Picker("Type", selection: Binding(
+                get: { currentOption.mediaType },
+                set: { newType in
+                    if let firstOfNewType = firstMedia.mediaOptions.first(where: { $0.mediaType == newType }) {
+                        updateMediaOption(for: firstMedia, newId: firstOfNewType.id)
+                    }
+                }
+            )) {
+                ForEach(availableTypes, id: \.self) { type in
+                    Text(type.rawValue).tag(type)
+                }
+            }
+            .pickerStyle(.segmented)
+            .padding(.bottom, 4)
+
+            Picker("Format", selection: Binding(
+                get: { currentOption.containerName },
+                set: { newFormat in
+                    let matching = optionsForType.first(where: { $0.containerName == newFormat && $0.qualityName == currentOption.qualityName })
+                    let fallback = optionsForType.first(where: { $0.containerName == newFormat })
+                    if let newOption = matching ?? fallback {
+                        updateMediaOption(for: firstMedia, newId: newOption.id)
+                    }
+                }
+            )) {
+                ForEach(availableFormats, id: \.self) { format in
+                    Text(format).tag(format)
+                }
+            }
+
+            if currentOption.mediaType == .video {
+                Picker("Quality", selection: Binding(
+                    get: { currentOption.qualityName },
+                    set: { newQuality in
+                        if let newOption = optionsForFormat.first(where: { $0.qualityName == newQuality }) {
+                            updateMediaOption(for: firstMedia, newId: newOption.id)
+                        }
+                    }
+                )) {
+                    ForEach(availableQualities, id: \.self) { quality in
+                        Text(quality).tag(quality)
+                    }
+                }
+            } else {
+                Picker("Quality", selection: .constant("Best")) {
+                    Text("Best").tag("Best")
+                }
+                .disabled(true)
+            }
+            } // End of else block
+        } header: {
+            Text("Media Format").foregroundStyle(.blue)
         }
     }
 
     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) {
+        Section {
+            DisclosureGroup(isExpanded: $showsAdvancedTransfer) {
+                VStack(alignment: .leading, spacing: 12) {
+                    Toggle("Verify Checksum", isOn: $checksumEnabled)
+                    if checksumEnabled {
                         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)
-                }
+                    VStack(alignment: .leading, spacing: 4) {
+                        Text("Headers")
+                        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))
-                }
+                    VStack(alignment: .leading, spacing: 4) {
+                        Text("Cookies")
+                        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)
+                    VStack(alignment: .leading, spacing: 4) {
+                        Text("Mirrors")
+                        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(.top, 8)
-        } label: {
-            Label("Advanced Transfer", systemImage: "slider.horizontal.3")
-                .font(.subheadline.weight(.semibold))
         }
     }
 

Sources/Firelink/AppSettings.swift

@@ -183,6 +183,20 @@ final class AppSettings: ObservableObject {
         didSet { save() }
     }
 
+    @Published var extensionPairingToken: String {
+        didSet {
+            if isKeychainAccessGranted {
+                KeychainCredentialStore.setExtensionToken(extensionPairingToken)
+            }
+        }
+    }
+
+    @Published var isKeychainAccessGranted: Bool {
+        didSet { save() }
+    }
+
+    @Published var showKeychainPrimer = false
+
     @Published var message = ""
 
     private let defaults: UserDefaults
@@ -192,6 +206,7 @@ final class AppSettings: ObservableObject {
     init(defaults: UserDefaults = .standard) {
         self.defaults = defaults
 
+        let granted: Bool
         if let data = defaults.data(forKey: storageKey),
            let stored = try? JSONDecoder().decode(StoredSettings.self, from: data) {
             appTheme = stored.appTheme ?? .system
@@ -205,6 +220,8 @@ final class AppSettings: ObservableObject {
             siteLogins = stored.siteLogins
             mediaCookieSource = stored.mediaCookieSource ?? .none
             downloadDirectories = Self.decodeDirectories(stored.downloadDirectories)
+            granted = stored.isKeychainAccessGranted ?? false
+            isKeychainAccessGranted = granted
         } else {
             appTheme = .system
             appFontSize = .standard
@@ -217,6 +234,37 @@ final class AppSettings: ObservableObject {
             siteLogins = []
             mediaCookieSource = .none
             downloadDirectories = Self.defaultDirectories()
+            granted = false
+            isKeychainAccessGranted = granted
+        }
+
+        let currentVersion = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String ?? "unknown"
+        let currentBuild = Bundle.main.infoDictionary?["CFBundleVersion"] as? String ?? "unknown"
+        let fullVersion = "\(currentVersion).\(currentBuild)"
+        let lastVersion = defaults.string(forKey: "Firelink.lastLaunchedVersion")
+        defaults.set(fullVersion, forKey: "Firelink.lastLaunchedVersion")
+
+        var needsPrimer = false
+        if granted {
+            if let lastVersion, lastVersion != fullVersion {
+                needsPrimer = true
+            }
+        }
+
+        if granted {
+            if needsPrimer {
+                showKeychainPrimer = true
+                extensionPairingToken = ""
+            } else {
+                if let token = KeychainCredentialStore.extensionToken() {
+                    extensionPairingToken = token
+                } else {
+                    extensionPairingToken = Self.generateSecureToken()
+                    // The didSet of extensionPairingToken will handle setting it in the keychain since isKeychainAccessGranted is true.
+                }
+            }
+        } else {
+            extensionPairingToken = ""
         }
 
         for category in DownloadCategory.allCases where downloadDirectories[category] == nil {
@@ -320,6 +368,38 @@ final class AppSettings: ObservableObject {
         return DownloadCredentials(username: login.username, password: password)
     }
 
+    func grantKeychainAccess() {
+        isKeychainAccessGranted = true
+        if let token = KeychainCredentialStore.extensionToken() {
+            extensionPairingToken = token
+        } else {
+            extensionPairingToken = Self.generateSecureToken()
+        }
+    }
+
+    func revokeKeychainAccess() {
+        KeychainCredentialStore.deleteExtensionToken()
+        for login in siteLogins {
+            KeychainCredentialStore.deletePassword(for: login.id)
+        }
+        siteLogins.removeAll()
+        extensionPairingToken = ""
+        isKeychainAccessGranted = false
+    }
+
+    func resolveKeychainPrimer(grantAccess: Bool) {
+        showKeychainPrimer = false
+        if grantAccess {
+            if let token = KeychainCredentialStore.extensionToken() {
+                extensionPairingToken = token
+            } else {
+                extensionPairingToken = Self.generateSecureToken()
+            }
+        } else {
+            isKeychainAccessGranted = false
+        }
+    }
+
     private func save() {
         let stored = StoredSettings(
             appTheme: appTheme,
@@ -332,7 +412,8 @@ final class AppSettings: ObservableObject {
             proxySettings: proxySettings.normalized,
             downloadDirectories: Dictionary(uniqueKeysWithValues: downloadDirectories.map { ($0.key.rawValue, $0.value) }),
             siteLogins: siteLogins,
-            mediaCookieSource: mediaCookieSource
+            mediaCookieSource: mediaCookieSource,
+            isKeychainAccessGranted: isKeychainAccessGranted
         )
         let defaults = self.defaults
         let storageKey = self.storageKey
@@ -374,6 +455,15 @@ final class AppSettings: ObservableObject {
         return host == normalizedPattern
     }
 
+    private static func generateSecureToken() -> String {
+        var bytes = [UInt8](repeating: 0, count: 32)
+        let status = SecRandomCopyBytes(kSecRandomDefault, bytes.count, &bytes)
+        guard status == errSecSuccess else {
+            return UUID().uuidString
+        }
+        return Data(bytes).base64EncodedString()
+    }
+
     private static func defaultDirectories() -> [DownloadCategory: String] {
         Dictionary(uniqueKeysWithValues: DownloadCategory.allCases.map { ($0, defaultDirectory(for: $0).path) })
     }
@@ -404,4 +494,5 @@ private struct StoredSettings: Codable {
     var downloadDirectories: [String: String]
     var siteLogins: [SiteLogin]
     var mediaCookieSource: BrowserCookieSource?
+    var isKeychainAccessGranted: Bool?
 }

Sources/Firelink/Aria2DownloadEngine.swift

@@ -56,21 +56,14 @@ final class Aria2DownloadEngine {
         let candidates = [
             "/opt/homebrew/bin/aria2c",
             "/usr/local/bin/aria2c",
-            "/usr/bin/aria2c"
+            "/usr/bin/aria2c",
+            "/opt/local/bin/aria2c"
         ]
 
         if let found = candidates.first(where: { FileManager.default.isExecutableFile(atPath: $0) }) {
             return URL(fileURLWithPath: found)
         }
 
-        let path = ProcessInfo.processInfo.environment["PATH"] ?? ""
-        for folder in path.split(separator: ":") {
-            let candidate = URL(fileURLWithPath: String(folder)).appendingPathComponent("aria2c")
-            if FileManager.default.isExecutableFile(atPath: candidate.path) {
-                return candidate
-            }
-        }
-
         return nil
     }
 

Sources/Firelink/BinaryDownloader.swift

@@ -1,192 +0,0 @@
-import Foundation
-import CryptoKit
-
-enum BinaryDownloaderError: LocalizedError {
-    case invalidResponse
-    case httpError(statusCode: Int)
-    case downloadFailed(Error?)
-    case moveFailed(Error)
-    case permissionFailed(Error)
-    case unzipFailed
-    case unsupportedDownloadURL
-    case missingChecksum
-    case checksumMismatch
-
-    var errorDescription: String? {
-        switch self {
-        case .invalidResponse:
-            "The add-on server returned an invalid response."
-        case .httpError(let statusCode):
-            "The add-on download failed with HTTP \(statusCode)."
-        case .downloadFailed(let error):
-            error?.localizedDescription ?? "The add-on download failed."
-        case .moveFailed(let error):
-            error.localizedDescription
-        case .permissionFailed(let error):
-            "Could not mark the add-on executable: \(error.localizedDescription)"
-        case .unzipFailed:
-            "Could not extract the downloaded add-on archive."
-        case .unsupportedDownloadURL:
-            "The add-on URL must be HTTP or HTTPS."
-        case .missingChecksum:
-            "The add-on configuration is missing a SHA-256 checksum."
-        case .checksumMismatch:
-            "The downloaded add-on did not match the expected SHA-256 checksum."
-        }
-    }
-}
-
-final class BinaryDownloader: NSObject, URLSessionDownloadDelegate, Sendable {
-    private let url: URL
-    private let destination: URL
-    private let expectedSHA256: String?
-    private let onProgress: @Sendable (Double) -> Void
-    private let session: URLSession
-
-    private let continuation: CheckedContinuation<Void, Error>
-
-    init(
-        url: URL,
-        destination: URL,
-        expectedSHA256: String?,
-        onProgress: @escaping @Sendable (Double) -> Void,
-        continuation: CheckedContinuation<Void, Error>
-    ) {
-        self.url = url
-        self.destination = destination
-        self.expectedSHA256 = expectedSHA256
-        self.onProgress = onProgress
-        self.continuation = continuation
-
-        let config = URLSessionConfiguration.ephemeral
-        self.session = URLSession(configuration: config, delegate: nil, delegateQueue: nil) // Delegate set below
-        super.init()
-    }
-
-    static func download(
-        from url: URL,
-        to destination: URL,
-        expectedSHA256: String? = nil,
-        onProgress: @escaping @Sendable (Double) -> Void
-    ) async throws {
-        try await withCheckedThrowingContinuation { continuation in
-            let downloader = BinaryDownloader(
-                url: url,
-                destination: destination,
-                expectedSHA256: expectedSHA256,
-                onProgress: onProgress,
-                continuation: continuation
-            )
-            let session = URLSession(configuration: .ephemeral, delegate: downloader, delegateQueue: nil)
-            let task = session.downloadTask(with: url)
-            task.resume()
-        }
-    }
-
-    func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didFinishDownloadingTo location: URL) {
-        defer { session.finishTasksAndInvalidate() }
-        guard let response = downloadTask.response as? HTTPURLResponse else {
-            continuation.resume(throwing: BinaryDownloaderError.invalidResponse)
-            return
-        }
-        guard (200...299).contains(response.statusCode) else {
-            continuation.resume(throwing: BinaryDownloaderError.httpError(statusCode: response.statusCode))
-            return
-        }
-
-        do {
-            guard ["http", "https"].contains(url.scheme?.lowercased() ?? "") else {
-                throw BinaryDownloaderError.unsupportedDownloadURL
-            }
-
-            let isZip = url.pathExtension.lowercased() == "zip"
-            let stagingURL = destination
-                .deletingLastPathComponent()
-                .appendingPathComponent(".\(destination.lastPathComponent).\(UUID().uuidString).staged")
-            var cleanupURLs: [URL] = [stagingURL]
-            defer {
-                for cleanupURL in cleanupURLs {
-                    try? FileManager.default.removeItem(at: cleanupURL)
-                }
-            }
-
-            if isZip {
-                let tempZip = location.appendingPathExtension("zip")
-                try FileManager.default.moveItem(at: location, to: tempZip)
-                cleanupURLs.append(tempZip)
-
-                let extractDir = tempZip.deletingLastPathComponent().appendingPathComponent("extracted_\(UUID().uuidString)")
-                try FileManager.default.createDirectory(at: extractDir, withIntermediateDirectories: true)
-                cleanupURLs.append(extractDir)
-
-                let process = Process()
-                process.executableURL = URL(fileURLWithPath: "/usr/bin/unzip")
-                process.arguments = ["-q", tempZip.path, "-d", extractDir.path]
-                try process.run()
-                process.waitUntilExit()
-                guard process.terminationStatus == 0 else {
-                    throw BinaryDownloaderError.unzipFailed
-                }
-
-                let expectedName = destination.lastPathComponent
-                var foundBinary: URL?
-                if let enumerator = FileManager.default.enumerator(at: extractDir, includingPropertiesForKeys: nil) {
-                    for case let fileURL as URL in enumerator {
-                        if fileURL.lastPathComponent == expectedName || fileURL.lastPathComponent == expectedName + "c" {
-                            foundBinary = fileURL
-                            break
-                        }
-                    }
-                }
-
-                guard let foundBinary = foundBinary else {
-                    throw BinaryDownloaderError.unzipFailed
-                }
-
-                try FileManager.default.moveItem(at: foundBinary, to: stagingURL)
-            } else {
-                try FileManager.default.moveItem(at: location, to: stagingURL)
-            }
-
-            try FileManager.default.setAttributes([.posixPermissions: 0o755], ofItemAtPath: stagingURL.path)
-            if let expectedSHA256 {
-                let actualSHA256 = try Self.sha256Hex(for: stagingURL)
-                guard actualSHA256.caseInsensitiveCompare(expectedSHA256.trimmingCharacters(in: .whitespacesAndNewlines)) == .orderedSame else {
-                    throw BinaryDownloaderError.checksumMismatch
-                }
-            }
-            try installStagedBinary(stagingURL, at: destination)
-
-            continuation.resume()
-        } catch {
-            continuation.resume(throwing: BinaryDownloaderError.moveFailed(error))
-        }
-    }
-
-    func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didWriteData bytesWritten: Int64, totalBytesWritten: Int64, totalBytesExpectedToWrite: Int64) {
-        guard totalBytesExpectedToWrite > 0 else { return }
-        let progress = Double(totalBytesWritten) / Double(totalBytesExpectedToWrite)
-        onProgress(progress)
-    }
-
-    func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) {
-        if let error = error {
-            session.finishTasksAndInvalidate()
-            continuation.resume(throwing: BinaryDownloaderError.downloadFailed(error))
-        }
-    }
-
-    private func installStagedBinary(_ stagedURL: URL, at destination: URL) throws {
-        if FileManager.default.fileExists(atPath: destination.path) {
-            _ = try FileManager.default.replaceItemAt(destination, withItemAt: stagedURL)
-        } else {
-            try FileManager.default.moveItem(at: stagedURL, to: destination)
-        }
-    }
-
-    private static func sha256Hex(for url: URL) throws -> String {
-        let data = try Data(contentsOf: url, options: .mappedIfSafe)
-        let digest = SHA256.hash(data: data)
-        return digest.map { String(format: "%02x", $0) }.joined()
-    }
-}

Sources/Firelink/ContentView.swift

@@ -27,7 +27,12 @@ struct ContentView: View {
                     _ = provider.loadObject(ofClass: URL.self) { url, _ in
                         if let url = url {
                             DispatchQueue.main.async {
-                                controller.pendingPasteboardText = url.absoluteString
+                                let newText = url.absoluteString
+                                if let existing = controller.pendingPasteboardText, !existing.isEmpty {
+                                    controller.pendingPasteboardText = existing + "\n" + newText
+                                } else {
+                                    controller.pendingPasteboardText = newText
+                                }
                                 controller.pendingReferer = nil
                                 openWindow(id: "add-downloads")
                             }
@@ -37,7 +42,11 @@ struct ContentView: View {
                     _ = provider.loadObject(ofClass: String.self) { text, _ in
                         if let text = text {
                             DispatchQueue.main.async {
-                                controller.pendingPasteboardText = text
+                                if let existing = controller.pendingPasteboardText, !existing.isEmpty {
+                                    controller.pendingPasteboardText = existing + "\n" + text
+                                } else {
+                                    controller.pendingPasteboardText = text
+                                }
                                 controller.pendingReferer = nil
                                 openWindow(id: "add-downloads")
                             }
@@ -47,6 +56,10 @@ struct ContentView: View {
             }
             return true
         }
+        .sheet(isPresented: $settings.showKeychainPrimer) {
+            KeychainPrimerView()
+                .environmentObject(settings)
+        }
     }
 
     @ViewBuilder
@@ -142,18 +155,24 @@ struct ContentView: View {
             }
             .keyboardShortcut(.delete, modifiers: [])
             .opacity(0)
+            .buttonStyle(.plain)
+            .focusable(false)
 
             Button("") {
                 handlePaste(queueID: queueID)
             }
             .keyboardShortcut("v", modifiers: .command)
             .opacity(0)
+            .buttonStyle(.plain)
+            .focusable(false)
 
             Button("") {
                 selectAll(items: items)
             }
             .keyboardShortcut("a", modifiers: .command)
             .opacity(0)
+            .buttonStyle(.plain)
+            .focusable(false)
 
             Button("") {
                 if let item = selectedItems.first {
@@ -162,6 +181,8 @@ struct ContentView: View {
             }
             .keyboardShortcut(.return, modifiers: [])
             .opacity(0)
+            .buttonStyle(.plain)
+            .focusable(false)
         }
         .confirmationDialog(
             "Delete \(selection.count) Download\(selection.count == 1 ? "" : "s")",
@@ -243,3 +264,55 @@ struct ContentView: View {
         }
     }
 }
+
+struct KeychainPrimerView: View {
+    @EnvironmentObject private var settings: AppSettings
+    @Environment(\.dismiss) private var dismiss
+
+    var body: some View {
+        VStack(spacing: 24) {
+            Image(systemName: "lock.shield")
+                .resizable()
+                .scaledToFit()
+                .frame(width: 64, height: 64)
+                .foregroundStyle(settings.appTheme.theme.accent ?? Color.accentColor)
+                .padding(.top, 16)
+
+            VStack(spacing: 8) {
+                Text("Security Update")
+                    .font(.title2)
+                    .fontWeight(.semibold)
+
+                Text("Firelink has been updated. To keep your browser extension running smoothly and your site logins secure, please re-authorize access to your Mac's Keychain on the next prompt.")
+                    .font(.body)
+                    .multilineTextAlignment(.center)
+                    .foregroundStyle(.secondary)
+                    .padding(.horizontal)
+            }
+
+            VStack(spacing: 12) {
+                Button {
+                    settings.resolveKeychainPrimer(grantAccess: true)
+                } label: {
+                    Text("Grant Secure Access")
+                        .frame(maxWidth: .infinity)
+                }
+                .buttonStyle(.borderedProminent)
+                .controlSize(.large)
+
+                Button {
+                    settings.resolveKeychainPrimer(grantAccess: false)
+                } label: {
+                    Text("Not Now")
+                        .frame(maxWidth: .infinity)
+                }
+                .buttonStyle(.borderless)
+                .controlSize(.large)
+            }
+            .padding(.horizontal, 32)
+            .padding(.bottom, 16)
+        }
+        .padding(24)
+        .frame(width: 400)
+    }
+}

Sources/Firelink/DownloadController.swift

@@ -29,6 +29,9 @@ final class DownloadController: ObservableObject {
         return supportDir.appendingPathComponent("Firelink").appendingPathComponent("downloads.json")
     }()
     private var saveTask: Task<Void, Never>?
+    private var pendingNotifications: [(title: String, body: String)] = []
+    private var notificationDebounceTask: Task<Void, Never>?
+    private var lastProgressUpdateTimes: [UUID: Date] = [:]
 
     init(settings: AppSettings) {
         self.settings = settings
@@ -208,26 +211,6 @@ final class DownloadController: ObservableObject {
         }
     }
 
-    func addMediaDownload(_ item: DownloadItem, startImmediately: Bool) {
-        var item = item
-        item.fileName = FileClassifier.sanitizedFileName(item.fileName)
-        item.category = FileClassifier.category(forFileName: item.fileName)
-        item.speedLimitKiBPerSecond = normalizedSpeedLimit(item.speedLimitKiBPerSecond)
-        item.queueID = normalizedQueueID(item.queueID ?? DownloadQueue.mainQueueID)
-
-        if let password = item.credentials?.password, !password.isEmpty {
-            KeychainCredentialStore.setPassword(password, for: item.id)
-        }
-
-        downloads.append(item)
-        engineMessage = "Added \(item.fileName) to \(item.category.rawValue)."
-        saveDownloads()
-
-        if startImmediately {
-            startQueue(queueID: item.queueID ?? DownloadQueue.mainQueueID)
-        }
-    }
-
     func startQueue(queueID: UUID? = nil) {
         engineMessage = ""
         restrictQueueToAutoResume = false
@@ -250,6 +233,7 @@ final class DownloadController: ObservableObject {
     }
 
     func pause(_ item: DownloadItem) {
+        lastProgressUpdateTimes[item.id] = nil
         activeHandles[item.id]?.cancel()
         activeHandles[item.id] = nil
         activeMediaHandles[item.id]?.cancel()
@@ -534,7 +518,7 @@ final class DownloadController: ObservableObject {
                 do {
                     update(item.id) {
                         guard $0.status == .downloading else { return }
-                        $0.message = "Checking media add-ons..."
+                        $0.message = "Checking bundled media engines..."
                     }
                     try await MediaEngineManager.shared.ensureAvailable(addons: [.ytDlp, .ffmpeg])
                     guard let liveItem = activeDownloadItem(id: item.id) else { return }
@@ -550,6 +534,11 @@ final class DownloadController: ObservableObject {
                         speedLimitKiBPerSecond: effectiveSpeedLimitKiBPerSecond(for: liveItem),
                         progress: { [weak self] progress in
                             Task { @MainActor in
+                                let now = Date()
+                                if let last = self?.lastProgressUpdateTimes[item.id], now.timeIntervalSince(last) < 0.25 {
+                                    return
+                                }
+                                self?.lastProgressUpdateTimes[item.id] = now
                                 self?.update(item.id) {
                                     guard $0.status == .downloading else { return }
                                     $0.progress = progress.fraction
@@ -601,6 +590,11 @@ final class DownloadController: ObservableObject {
                     speedLimitKiBPerSecond: effectiveSpeedLimitKiBPerSecond(for: item),
                     progress: { [weak self] progress in
                         Task { @MainActor in
+                            let now = Date()
+                            if let last = self?.lastProgressUpdateTimes[item.id], now.timeIntervalSince(last) < 0.25 {
+                                return
+                            }
+                            self?.lastProgressUpdateTimes[item.id] = now
                             self?.update(item.id) {
                                 guard $0.status == .downloading else { return }
                                 $0.progress = progress.fraction
@@ -622,7 +616,7 @@ final class DownloadController: ObservableObject {
                 update(item.id) {
                     $0.rpcPort = handle.rpcPort
                     $0.rpcSecret = handle.rpcSecret
-                    $0.message = "Process \(handle.processIdentifier)"
+                    $0.message = "Starting..."
                 }
                 saveDownloads()
                 applySpeedLimitsToActiveDownloads()
@@ -1108,14 +1102,35 @@ final class DownloadController: ObservableObject {
     }
 
     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)
+        pendingNotifications.append((title: title, body: body))
+        notificationDebounceTask?.cancel()
+        
+        notificationDebounceTask = Task { @MainActor in
+            do {
+                try await Task.sleep(nanoseconds: 1_000_000_000)
+                guard !Task.isCancelled else { return }
+                
+                UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound]) { [weak self] granted, _ in
+                    guard granted, let self else { return }
+                    Task { @MainActor in
+                        let items = self.pendingNotifications
+                        self.pendingNotifications.removeAll()
+                        guard !items.isEmpty else { return }
+                        
+                        let content = UNMutableNotificationContent()
+                        if items.count == 1 {
+                            content.title = items[0].title
+                            content.body = items[0].body
+                        } else {
+                            content.title = "\(items.count) Downloads Completed"
+                            content.body = "Multiple items have finished downloading."
+                        }
+                        content.sound = .default
+                        let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: nil)
+                        UNUserNotificationCenter.current().add(request)
+                    }
+                }
+            } catch {}
         }
     }
 }

Sources/Firelink/DownloadMetadataFetcher.swift

@@ -134,23 +134,80 @@ enum DownloadMetadataFetcher {
         if h == "localhost" || h.hasSuffix(".local") { return true }
         if !h.contains(".") && !h.contains(":") { return true }
 
-        let parts = h.split(separator: ".")
-        if parts.count == 4, let first = Int(parts[0]), let second = Int(parts[1]) {
-            if first == 127 || first == 10 || (first == 192 && second == 168) {
-                return true
-            }
-            if first == 172 && (16...31).contains(second) {
-                return true
-            }
-            if first == 169 && second == 254 {
-                return true
-            }
-        }
+        var hints = addrinfo(
+            ai_flags: 0,
+            ai_family: AF_UNSPEC,
+            ai_socktype: SOCK_STREAM,
+            ai_protocol: 0,
+            ai_addrlen: 0,
+            ai_canonname: nil,
+            ai_addr: nil,
+            ai_next: nil
+        )
 
-        if h.contains(":") {
-            if h == "[::1]" || h.hasPrefix("[fc") || h.hasPrefix("[fd") || h.hasPrefix("[fe8") || h.hasPrefix("[fe9") || h.hasPrefix("[fea") || h.hasPrefix("[feb") {
-                return true
+        var res: UnsafeMutablePointer<addrinfo>?
+        if getaddrinfo(host, nil, &hints, &res) == 0 {
+            var current = res
+            while let info = current {
+                let family = info.pointee.ai_family
+                if family == AF_INET {
+                    let addr = info.pointee.ai_addr.withMemoryRebound(to: sockaddr_in.self, capacity: 1) { $0.pointee }
+                    let ip = UInt32(bigEndian: addr.sin_addr.s_addr)
+                    let first = (ip >> 24) & 0xFF
+                    let second = (ip >> 16) & 0xFF
+
+                    if first == 127 || first == 10 || (first == 192 && second == 168) {
+                        freeaddrinfo(res)
+                        return true
+                    }
+                    if first == 172 && (16...31).contains(second) {
+                        freeaddrinfo(res)
+                        return true
+                    }
+                    if first == 169 && second == 254 {
+                        freeaddrinfo(res)
+                        return true
+                    }
+                } else if family == AF_INET6 {
+                    let addr = info.pointee.ai_addr.withMemoryRebound(to: sockaddr_in6.self, capacity: 1) { $0.pointee }
+                    let bytes = addr.sin6_addr.__u6_addr.__u6_addr8
+                    
+                    let isLoopback = bytes.0 == 0 && bytes.1 == 0 && bytes.2 == 0 && bytes.3 == 0 &&
+                                     bytes.4 == 0 && bytes.5 == 0 && bytes.6 == 0 && bytes.7 == 0 &&
+                                     bytes.8 == 0 && bytes.9 == 0 && bytes.10 == 0 && bytes.11 == 0 &&
+                                     bytes.12 == 0 && bytes.13 == 0 && bytes.14 == 0 && bytes.15 == 1
+                    
+                    let isULA = (bytes.0 & 0xFE) == 0xFC
+                    let isLinkLocal = bytes.0 == 0xFE && (bytes.1 & 0xC0) == 0x80
+                    
+                    let isIPv4Mapped = bytes.0 == 0 && bytes.1 == 0 && bytes.2 == 0 && bytes.3 == 0 &&
+                                       bytes.4 == 0 && bytes.5 == 0 && bytes.6 == 0 && bytes.7 == 0 &&
+                                       bytes.8 == 0 && bytes.9 == 0 && bytes.10 == 0xFF && bytes.11 == 0xFF
+                    
+                    if isLoopback || isULA || isLinkLocal {
+                        freeaddrinfo(res)
+                        return true
+                    }
+                    if isIPv4Mapped {
+                        let first = bytes.12
+                        let second = bytes.13
+                        if first == 127 || first == 10 || (first == 192 && second == 168) {
+                            freeaddrinfo(res)
+                            return true
+                        }
+                        if first == 172 && (16...31).contains(second) {
+                            freeaddrinfo(res)
+                            return true
+                        }
+                        if first == 169 && second == 254 {
+                            freeaddrinfo(res)
+                            return true
+                        }
+                    }
+                }
+                current = info.pointee.ai_next
             }
+            freeaddrinfo(res)
         }
         return false
     }

Sources/Firelink/DownloadTable.swift

@@ -104,6 +104,7 @@ struct DownloadTable: View {
                 .width(min: 100, ideal: 155)
             }
             .environment(\.defaultMinListRowHeight, settings.listRowDensity.minRowHeight)
+            .animation(.default, value: sortedItems)
             .contextMenu(forSelectionType: DownloadItem.ID.self) { itemIDs in
                 rowContextMenu(for: itemIDs)
             } primaryAction: { itemIDs in
@@ -202,33 +203,37 @@ struct DownloadTable: View {
 
             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")
-                }
-            }
+            Divider()
 
-            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)
+            Menu("Controls") {
+                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")
                     }
-                } 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)
+                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")
                     }
-                } label: {
-                    Label("Redownload", systemImage: "arrow.clockwise")
                 }
             }
 
@@ -306,22 +311,15 @@ struct DownloadTable: View {
                 .lineLimit(1)
                 .truncationMode(.tail)
         } else {
-            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)
-                }
+            HStack(spacing: 4) {
+                ProgressView(value: item.progress)
+                    .progressViewStyle(.linear)
+                    .tint(statusColor(for: item.status))
+                
+                Text(item.progress.formatted(.percent.precision(.fractionLength(0))))
+                    .font(.system(size: 11, weight: .medium, design: .monospaced))
+                    .frame(width: 35, alignment: .trailing)
             }
-            .frame(height: 16)
         }
     }
 

Sources/Firelink/FirelinkApp.swift

@@ -1,75 +1,8 @@
 import SwiftUI
-import Sparkle
-
-final class SparkleUpdater: NSObject, ObservableObject, SPUUpdaterDelegate {
-    private var _updater: SPUUpdater?
-    var updater: SPUUpdater { _updater! }
-
-    @Published var isChecking = false
-    @Published var isDownloading = false
-    @Published var isExtracting = false
-    @Published var isReadyToInstall = false
-    @Published var downloadProgress: Double = 0.0
-    @Published var extractionProgress: Double = 0.0
-
-    @Published var updateStatus: String?
-    @Published var foundUpdateItem: SUAppcastItem?
-    @Published var releaseNotes: String?
-
-    var expectedContentLength: UInt64 = 0
-    var receivedContentLength: UInt64 = 0
-    var cancellation: (() -> Void)?
-    var updateChoiceReply: ((SPUUserUpdateChoice) -> Void)?
-
-    override init() {
-        super.init()
-        let driver = InlineUpdateUserDriver(updater: self)
-        let hostBundle = Bundle.main
-        self._updater = SPUUpdater(hostBundle: hostBundle, applicationBundle: hostBundle, userDriver: driver, delegate: self)
-        do {
-            try self._updater?.start()
-        } catch {
-            print("Failed to start Sparkle updater: \(error)")
-        }
-    }
-
-    func checkForUpdates() {
-        guard updater.canCheckForUpdates else {
-            isChecking = false
-            updateStatus = "Update check is already in progress."
-            return
-        }
-        updater.checkForUpdates()
-    }
-
-    func resetState() {
-        isChecking = false
-        isDownloading = false
-        isExtracting = false
-        isReadyToInstall = false
-        downloadProgress = 0.0
-        extractionProgress = 0.0
-        updateStatus = nil
-        foundUpdateItem = nil
-        releaseNotes = nil
-        expectedContentLength = 0
-        receivedContentLength = 0
-        cancellation = nil
-        updateChoiceReply = nil
-    }
-
-    // Delegate methods can be left mostly empty or minimal since the UserDriver handles the UI state now.
-    func updater(_ updater: SPUUpdater, didFinishUpdateCycleFor updateCheck: SPUUpdateCheck, error: Error?) {
-        DispatchQueue.main.async {
-            self.isChecking = false
-        }
-    }
-}
 
 @main
 struct FirelinkApp: App {
-    @StateObject private var sparkleUpdater: SparkleUpdater
-
+    @StateObject private var updateChecker: ReleaseUpdateChecker
     @StateObject private var settings: AppSettings
     @StateObject private var controller: DownloadController
     @StateObject private var schedulerController: SchedulerController
@@ -79,7 +12,7 @@ struct FirelinkApp: App {
     private let extensionServer: LocalExtensionServer?
 
     init() {
-        self._sparkleUpdater = StateObject(wrappedValue: SparkleUpdater())
+        self._updateChecker = StateObject(wrappedValue: ReleaseUpdateChecker())
 
         let settings = AppSettings()
         let controller = DownloadController(settings: settings)
@@ -87,7 +20,7 @@ struct FirelinkApp: App {
         _controller = StateObject(wrappedValue: controller)
         _schedulerController = StateObject(wrappedValue: SchedulerController(downloadController: controller))
 
-        extensionServer = LocalExtensionServer(downloadController: controller)
+        extensionServer = LocalExtensionServer(downloadController: controller, settings: settings)
         extensionServer?.start()
         controller.extensionServerPort = extensionServer?.port
     }
@@ -98,9 +31,12 @@ struct FirelinkApp: App {
                 .environmentObject(controller)
                 .environmentObject(settings)
                 .environmentObject(schedulerController)
-                .environmentObject(sparkleUpdater)
+                .environmentObject(updateChecker)
                 .modifier(AppThemeModifier(theme: settings.appTheme))
                 .modifier(AppFontSizeModifier(fontSize: settings.appFontSize))
+                .task {
+                    updateChecker.checkAutomaticallyIfNeeded()
+                }
                 .onOpenURL { url in
                     if url.scheme == "firelink" {
                         if url.host == "add",
@@ -126,7 +62,7 @@ struct FirelinkApp: App {
         }
         .windowStyle(.titleBar)
 
-        WindowGroup("Add Downloads", id: "add-downloads") {
+        Window("Add Downloads", id: "add-downloads") {
             AddDownloadsView()
                 .environmentObject(controller)
                 .environmentObject(settings)
@@ -174,7 +110,6 @@ struct FirelinkApp: App {
         MenuBarExtra(isInserted: $showMenuBarIcon) {
             TrayMenuView()
                 .environmentObject(controller)
-                .environmentObject(sparkleUpdater)
         } label: {
             if let nsImage = { () -> NSImage? in
                 guard let url = menuBarIconURL(),

Sources/Firelink/GatekeeperConfig.swift

@@ -1,48 +0,0 @@
-import Foundation
-
-struct AddonConfig: Codable, Equatable, Sendable {
-    let version: String
-    let macArm64: URL?
-    let macX64: URL?
-    let macArm64SHA256: String?
-    let macX64SHA256: String?
-
-    enum CodingKeys: String, CodingKey {
-        case version
-        case macArm64 = "mac-arm64"
-        case macX64 = "mac-x64"
-        case macArm64SHA256 = "mac-arm64-sha256"
-        case macX64SHA256 = "mac-x64-sha256"
-    }
-
-    /// Returns the appropriate download URL for the current system architecture
-    var currentArchURL: URL? {
-        #if arch(arm64)
-        return macArm64
-        #elseif arch(x86_64)
-        return macX64
-        #else
-        return nil
-        #endif
-    }
-
-    var currentArchSHA256: String? {
-        #if arch(arm64)
-        return macArm64SHA256
-        #elseif arch(x86_64)
-        return macX64SHA256
-        #else
-        return nil
-        #endif
-    }
-}
-
-struct GatekeeperConfig: Codable, Equatable, Sendable {
-    let ytDlp: AddonConfig?
-    let ffmpeg: AddonConfig?
-
-    enum CodingKeys: String, CodingKey {
-        case ytDlp = "yt-dlp"
-        case ffmpeg
-    }
-}

Sources/Firelink/KeychainCredentialStore.swift

@@ -10,7 +10,8 @@ enum KeychainCredentialStore {
             kSecAttrService as String: service,
             kSecAttrAccount as String: id.uuidString,
             kSecReturnData as String: true,
-            kSecMatchLimit as String: kSecMatchLimitOne
+            kSecMatchLimit as String: kSecMatchLimitOne,
+            kSecUseAuthenticationUI as String: kSecUseAuthenticationUIFail
         ]
 
         var result: CFTypeRef?
@@ -30,7 +31,8 @@ enum KeychainCredentialStore {
             kSecClass as String: kSecClassGenericPassword,
             kSecAttrService as String: service,
             kSecAttrAccount as String: id.uuidString,
-            kSecValueData as String: Data(password.utf8)
+            kSecValueData as String: Data(password.utf8),
+            kSecAttrAccessible as String: kSecAttrAccessibleWhenUnlockedThisDeviceOnly
         ]
 
         return SecItemAdd(attributes as CFDictionary, nil) == errSecSuccess
@@ -44,6 +46,54 @@ enum KeychainCredentialStore {
             kSecAttrAccount as String: id.uuidString
         ]
 
+        let status = SecItemDelete(query as CFDictionary)
+        return status == errSecSuccess || status == errSecItemNotFound
+    }
+    private static let extensionTokenService = "local.firelink.extension-token"
+    private static let extensionTokenAccount = "pairing-token"
+
+    static func extensionToken() -> String? {
+        let query: [String: Any] = [
+            kSecClass as String: kSecClassGenericPassword,
+            kSecAttrService as String: extensionTokenService,
+            kSecAttrAccount as String: extensionTokenAccount,
+            kSecReturnData as String: true,
+            kSecMatchLimit as String: kSecMatchLimitOne,
+            kSecUseAuthenticationUI as String: kSecUseAuthenticationUIFail
+        ]
+
+        var result: CFTypeRef?
+        guard SecItemCopyMatching(query as CFDictionary, &result) == errSecSuccess,
+              let data = result as? Data else {
+            return nil
+        }
+
+        return String(data: data, encoding: .utf8)
+    }
+
+    @discardableResult
+    static func setExtensionToken(_ token: String) -> Bool {
+        deleteExtensionToken()
+
+        let attributes: [String: Any] = [
+            kSecClass as String: kSecClassGenericPassword,
+            kSecAttrService as String: extensionTokenService,
+            kSecAttrAccount as String: extensionTokenAccount,
+            kSecValueData as String: Data(token.utf8),
+            kSecAttrAccessible as String: kSecAttrAccessibleWhenUnlockedThisDeviceOnly
+        ]
+
+        return SecItemAdd(attributes as CFDictionary, nil) == errSecSuccess
+    }
+
+    @discardableResult
+    static func deleteExtensionToken() -> Bool {
+        let query: [String: Any] = [
+            kSecClass as String: kSecClassGenericPassword,
+            kSecAttrService as String: extensionTokenService,
+            kSecAttrAccount as String: extensionTokenAccount
+        ]
+
         let status = SecItemDelete(query as CFDictionary)
         return status == errSecSuccess || status == errSecItemNotFound
     }

Sources/Firelink/LocalExtensionServer.swift

@@ -8,25 +8,18 @@ final class LocalExtensionServer: @unchecked Sendable {
         static let maxRequestBytes = 128 * 1024
         static let maxURLCount = 200
         static let extensionRequestHeader = "x-firelink-extension"
-        
-        // IMPORTANT(Backward Compatibility):
-        // Extension updates on Mozilla/Chrome stores can take several days to be approved.
-        // Therefore, we MUST NOT introduce breaking changes to the LocalExtensionServer API 
-        // without maintaining backward compatibility for older extensions.
-        // If you need to update the API (e.g., changing the payload structure), add the new 
-        // token here and handle both versions in `processRequest`.
-        static let supportedExtensionTokens = Set(["firelink-extension-v1"])
-        
         static let allowedSchemes = Set(["http", "https", "ftp", "sftp"])
     }
 
     private let listener: NWListener
     private let downloadController: DownloadController
+    private let settings: AppSettings
     private let queue = DispatchQueue(label: "local.firelink.server")
     let port: UInt16
 
-    init?(downloadController: DownloadController) {
+    init?(downloadController: DownloadController, settings: AppSettings) {
         self.downloadController = downloadController
+        self.settings = settings
         let parameters = NWParameters.tcp
 
         var createdListener: NWListener?
@@ -63,12 +56,17 @@ final class LocalExtensionServer: @unchecked Sendable {
 
     private func handleConnection(_ connection: NWConnection) {
         connection.start(queue: queue)
-        receiveRequest(from: connection, accumulatedData: Data())
+        let timeoutItem = DispatchWorkItem { [weak connection] in
+            connection?.cancel()
+        }
+        queue.asyncAfter(deadline: .now() + 5.0, execute: timeoutItem)
+        receiveRequest(from: connection, accumulatedData: Data(), timeoutItem: timeoutItem)
     }
 
-    private func receiveRequest(from connection: NWConnection, accumulatedData: Data) {
+    private func receiveRequest(from connection: NWConnection, accumulatedData: Data, timeoutItem: DispatchWorkItem) {
         connection.receive(minimumIncompleteLength: 1, maximumLength: 65536) { [weak self] data, _, isComplete, error in
             guard let self else {
+                timeoutItem.cancel()
                 connection.cancel()
                 return
             }
@@ -79,22 +77,25 @@ final class LocalExtensionServer: @unchecked Sendable {
             }
 
             guard error == nil, requestData.count <= Constants.maxRequestBytes else {
+                timeoutItem.cancel()
                 self.sendResponse(.payloadTooLarge, connection: connection, origin: nil)
                 return
             }
 
             if let request = HTTPRequest(data: requestData) {
+                timeoutItem.cancel()
                 let status = self.processRequest(request)
                 self.sendResponse(status, connection: connection, origin: request.header(named: "origin"))
                 return
             }
 
             if isComplete {
+                timeoutItem.cancel()
                 self.sendResponse(.badRequest, connection: connection, origin: nil)
                 return
             }
 
-            self.receiveRequest(from: connection, accumulatedData: requestData)
+            self.receiveRequest(from: connection, accumulatedData: requestData, timeoutItem: timeoutItem)
         }
     }
 
@@ -108,7 +109,7 @@ final class LocalExtensionServer: @unchecked Sendable {
         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-Methods: GET, POST, OPTIONS")
             headers.append("Access-Control-Allow-Headers: Content-Type, X-Firelink-Extension")
         }
 
@@ -128,10 +129,6 @@ final class LocalExtensionServer: @unchecked Sendable {
     }
 
     private func processRequest(_ request: HTTPRequest) -> HTTPStatus {
-        guard request.path == "/download" else {
-            return .notFound
-        }
-
         let host = request.header(named: "host") ?? ""
         let isLocalhost = host == "127.0.0.1:\(self.port)" || host == "localhost:\(self.port)" || host == "127.0.0.1" || host == "localhost"
         guard isLocalhost else {
@@ -142,13 +139,22 @@ final class LocalExtensionServer: @unchecked Sendable {
             return isAllowedExtensionOrigin(request.header(named: "origin") ?? "") ? .noContent : .forbidden
         }
 
-        guard request.method == "POST" else {
-            return .methodNotAllowed
+        let expectedToken = DispatchQueue.main.sync { settings.extensionPairingToken }
+        guard let token = request.header(named: Constants.extensionRequestHeader),
+              token == expectedToken else {
+            return .forbidden
         }
 
-        guard let token = request.header(named: Constants.extensionRequestHeader),
-              Constants.supportedExtensionTokens.contains(token) else {
-            return .forbidden
+        if request.path == "/ping" {
+            return request.method == "GET" ? .ok : .methodNotAllowed
+        }
+
+        guard request.path == "/download" else {
+            return .notFound
+        }
+
+        guard request.method == "POST" else {
+            return .methodNotAllowed
         }
 
         guard request.header(named: "content-type")?.lowercased().contains("application/json") == true else {

Sources/Firelink/MediaDownloadEngine.swift

@@ -29,11 +29,11 @@ final class MediaDownloadEngine: @unchecked Sendable {
         let ytDlpURL = await MediaEngineManager.shared.binaryPath(for: .ytDlp)
         let ffmpegURL = await MediaEngineManager.shared.binaryPath(for: .ffmpeg)
 
-        guard FileManager.default.isExecutableFile(atPath: ytDlpURL.path) else {
-            throw EngineError.missingEngine("yt-dlp is not installed. Please check Settings > Add-ons.")
+        guard let ytDlpURL, FileManager.default.isExecutableFile(atPath: ytDlpURL.path) else {
+            throw EngineError.missingEngine("The bundled yt-dlp executable is missing. Reinstall Firelink or rebuild the app bundle.")
         }
-        guard FileManager.default.isExecutableFile(atPath: ffmpegURL.path) else {
-            throw EngineError.missingEngine("ffmpeg is not installed. Please check Settings > Add-ons.")
+        guard let ffmpegURL, FileManager.default.isExecutableFile(atPath: ffmpegURL.path) else {
+            throw EngineError.missingEngine("The bundled FFmpeg executable is missing. Reinstall Firelink or rebuild the app bundle.")
         }
 
         try FileManager.default.createDirectory(at: item.destinationDirectory, withIntermediateDirectories: true)
@@ -44,7 +44,7 @@ final class MediaDownloadEngine: @unchecked Sendable {
         var arguments = [
             "--newline",
             "--ffmpeg-location", ffmpegURL.path,
-            "--extractor-args", "youtube:player_client=ios,tv",
+            "--force-ipv4",
             "-o", item.destinationPath
         ]
 
@@ -97,30 +97,44 @@ final class MediaDownloadEngine: @unchecked Sendable {
             messageUpdate: messageUpdate
         )
 
+        let group = DispatchGroup()
+        group.enter() // output
+        group.enter() // error
+        group.enter() // process
+
         outputPipe.fileHandleForReading.readabilityHandler = { handle in
             let data = handle.availableData
-            guard !data.isEmpty, let text = String(data: data, encoding: .utf8) else { return }
-            outputHandler.handle(text)
-        }
-
-        errorPipe.fileHandleForReading.readabilityHandler = { handle in
-            let data = handle.availableData
-            guard !data.isEmpty else { return }
-            errorBuffer.append(data)
-            if let text = String(data: data, encoding: .utf8) {
+            if data.isEmpty {
+                handle.readabilityHandler = nil
+                group.leave()
+            } else if let text = String(data: data, encoding: .utf8) {
                 outputHandler.handle(text)
             }
         }
 
-        process.terminationHandler = { finishedProcess in
-            outputPipe.fileHandleForReading.readabilityHandler = nil
-            errorPipe.fileHandleForReading.readabilityHandler = nil
+        errorPipe.fileHandleForReading.readabilityHandler = { handle in
+            let data = handle.availableData
+            if data.isEmpty {
+                handle.readabilityHandler = nil
+                group.leave()
+            } else {
+                errorBuffer.append(data)
+                if let text = String(data: data, encoding: .utf8) {
+                    outputHandler.handle(text)
+                }
+            }
+        }
 
-            if finishedProcess.terminationStatus == 0 {
+        process.terminationHandler = { _ in
+            group.leave()
+        }
+
+        group.notify(queue: .global()) {
+            if process.terminationStatus == 0 {
                 completionGate.complete(.success(Self.resolvedOutputURL(for: item, tracker: outputPathTracker)))
             } else {
                 let errorString = String(data: errorBuffer.data, encoding: .utf8)?.trimmingCharacters(in: .whitespacesAndNewlines) ?? "Unknown Error"
-                completionGate.complete(.failure(EngineError.launchFailed(Self.cleanErrorMessage(errorString, status: finishedProcess.terminationStatus))))
+                completionGate.complete(.failure(EngineError.launchFailed(Self.cleanErrorMessage(errorString, status: process.terminationStatus))))
             }
         }
 
@@ -147,21 +161,23 @@ final class MediaDownloadEngine: @unchecked Sendable {
         }
 
         let baseName = expectedURL.deletingPathExtension().lastPathComponent
-        guard let contents = try? FileManager.default.contentsOfDirectory(
-            at: item.destinationDirectory,
-            includingPropertiesForKeys: [.contentModificationDateKey],
-            options: [.skipsHiddenFiles]
-        ) else {
-            return expectedURL
+        let commonExtensions = ["mp4", "mkv", "webm", "mp3", "m4a", "opus", "m4v", "aac", "wav", "flac"]
+        
+        var mostRecent: URL?
+        var mostRecentDate: Date = .distantPast
+        
+        for ext in commonExtensions {
+            let candidate = item.destinationDirectory.appendingPathComponent("\(baseName).\(ext)")
+            if FileManager.default.fileExists(atPath: candidate.path) {
+                let date = (try? candidate.resourceValues(forKeys: [.contentModificationDateKey]).contentModificationDate) ?? .distantPast
+                if date >= mostRecentDate {
+                    mostRecentDate = date
+                    mostRecent = candidate
+                }
+            }
         }
 
-        return contents
-            .filter { $0.deletingPathExtension().lastPathComponent == baseName }
-            .max { lhs, rhs in
-                let lhsDate = (try? lhs.resourceValues(forKeys: [.contentModificationDateKey]).contentModificationDate) ?? .distantPast
-                let rhsDate = (try? rhs.resourceValues(forKeys: [.contentModificationDateKey]).contentModificationDate) ?? .distantPast
-                return lhsDate < rhsDate
-            } ?? expectedURL
+        return mostRecent ?? expectedURL
     }
 
     private static func cleanErrorMessage(_ message: String, status: Int32) -> String {

Sources/Firelink/MediaEngineManager.swift

@@ -3,7 +3,6 @@ import Combine
 
 enum AddonState: Equatable, Sendable {
     case notInstalled
-    case downloading(progress: Double)
     case installed(version: String)
     case failed(error: String)
 }
@@ -12,10 +11,6 @@ enum AddonType: String, CaseIterable, Sendable {
     case ytDlp = "yt-dlp"
     case ffmpeg
 
-    var defaultsKey: String {
-        return "Firelink.AddonVersion.\(self.rawValue)"
-    }
-
     var binaryName: String {
         switch self {
         case .ytDlp: return "yt-dlp"
@@ -31,116 +26,56 @@ final class MediaEngineManager: ObservableObject {
     @Published var ytDlpState: AddonState = .notInstalled
     @Published var ffmpegState: AddonState = .notInstalled
 
-    private let configURL = URL(string: "https://nimbold.github.io/Firelink/firelink-addons.json")!
-
-    private var addonsDirectory: URL {
-        let appSupport = FileManager.default.urls(for: .applicationSupportDirectory, in: .userDomainMask).first!
-        let bundleID = Bundle.main.bundleIdentifier ?? "com.firelink.app"
-        return appSupport.appendingPathComponent(bundleID).appendingPathComponent("Addons", isDirectory: true)
-    }
-    private var installTasks: [AddonType: Task<Void, Error>] = [:]
-
     private init() {
         checkLocalInstallation()
     }
 
-    func binaryPath(for addon: AddonType) -> URL {
-        return addonsDirectory.appendingPathComponent(addon.binaryName)
+    func binaryPath(for addon: AddonType) -> URL? {
+        if let bundled = Bundle.main.url(forResource: addon.binaryName, withExtension: nil),
+           FileManager.default.isExecutableFile(atPath: bundled.path) {
+            return bundled
+        }
+        
+        // Prevent fatalError crash: avoid accessing Bundle.module if running in a packaged app.
+        if Bundle.main.bundleURL.pathExtension.lowercased() != "app" {
+            #if SWIFT_PACKAGE
+            if let bundled = Bundle.module.url(forResource: addon.binaryName, withExtension: nil),
+               FileManager.default.isExecutableFile(atPath: bundled.path) {
+                return bundled
+            }
+            #endif
+        }
+        return nil
     }
 
     func checkLocalInstallation() {
         for addon in AddonType.allCases {
-            guard installTasks[addon] == nil else { continue }
-            let path = binaryPath(for: addon)
-            if FileManager.default.isExecutableFile(atPath: path.path) {
-                if let version = UserDefaults.standard.string(forKey: addon.defaultsKey) {
-                    setState(for: addon, to: .installed(version: version))
-                } else {
-                    setState(for: addon, to: .installed(version: "Unknown"))
-                }
+            if binaryPath(for: addon) != nil {
+                setState(for: addon, to: .installed(version: "Bundled"))
             } else {
                 setState(for: addon, to: .notInstalled)
             }
         }
     }
 
-    func fetchLatestConfig() async throws -> GatekeeperConfig {
-        var request = URLRequest(url: configURL)
-        request.cachePolicy = .reloadIgnoringLocalCacheData
-        request.timeoutInterval = 30
-
-        let (data, response) = try await URLSession.shared.data(for: request)
-        guard let httpResponse = response as? HTTPURLResponse, (200...299).contains(httpResponse.statusCode) else {
-            throw URLError(.badServerResponse)
-        }
-
-        return try JSONDecoder().decode(GatekeeperConfig.self, from: data)
-    }
-
-    func ensureInstalled(addons requiredAddons: Set<AddonType> = Set(AddonType.allCases)) async throws {
-        let config = try await fetchLatestConfig()
-
-        try await withThrowingTaskGroup(of: Void.self) { group in
-            for addon in requiredAddons where shouldInstall(addon: addon, config: config) || installTasks[addon] != nil {
-                let task = installationTask(for: addon, from: config)
-                group.addTask {
-                    try await task.value
-                }
-            }
-
-            try await group.waitForAll()
-        }
-    }
-
     func ensureAvailable(addons requiredAddons: Set<AddonType>) async throws {
         checkLocalInstallation()
         let missingAddons = requiredAddons.filter { addon in
             switch state(for: addon) {
             case .installed:
                 return false
-            case .downloading, .notInstalled, .failed:
+            case .notInstalled, .failed:
                 return true
             }
         }
 
         guard !missingAddons.isEmpty else { return }
-        try await ensureInstalled(addons: missingAddons)
-    }
 
-    private func shouldInstall(addon: AddonType, config: GatekeeperConfig) -> Bool {
-        let state: AddonState
-        let configVersion: String?
-        switch addon {
-        case .ytDlp:
-            state = ytDlpState
-            configVersion = config.ytDlp?.version
-        case .ffmpeg:
-            state = ffmpegState
-            configVersion = config.ffmpeg?.version
+        for missing in missingAddons {
+            setState(for: missing, to: .failed(error: "Bundled executable missing"))
         }
 
-        switch state {
-        case .notInstalled, .failed:
-            return true
-        case .downloading:
-            return true
-        case .installed(let version):
-            guard let configVersion else { return false }
-            return version != configVersion
-        }
-    }
-
-    private func installationTask(for addon: AddonType, from config: GatekeeperConfig) -> Task<Void, Error> {
-        if let task = installTasks[addon] {
-            return task
-        }
-
-        let task = Task { @MainActor in
-            defer { self.installTasks[addon] = nil }
-            try await self.install(addon: addon, from: config)
-        }
-        installTasks[addon] = task
-        return task
+        throw NSError(domain: "MediaEngineErrorDomain", code: 1, userInfo: [NSLocalizedDescriptionKey: "One or more required media engines are missing from the app bundle. Reinstall Firelink or rebuild the app bundle."])
     }
 
     private func state(for addon: AddonType) -> AddonState {
@@ -150,60 +85,6 @@ final class MediaEngineManager: ObservableObject {
         }
     }
 
-    func install(addon: AddonType, from config: GatekeeperConfig) async throws {
-        setState(for: addon, to: .downloading(progress: 0))
-
-        let addonConfig: AddonConfig? = {
-            switch addon {
-            case .ytDlp: return config.ytDlp
-            case .ffmpeg: return config.ffmpeg
-            }
-        }()
-
-        guard let addonConfig = addonConfig else {
-            setState(for: addon, to: .failed(error: "Missing configuration for \(addon.rawValue)"))
-            throw URLError(.badURL)
-        }
-
-        guard let downloadURL = addonConfig.currentArchURL else {
-            setState(for: addon, to: .failed(error: "No download URL for current architecture"))
-            throw URLError(.badURL)
-        }
-
-        guard downloadURL.scheme?.lowercased() == "https" else {
-            setState(for: addon, to: .failed(error: "Add-on URL must use HTTPS"))
-            throw URLError(.badURL)
-        }
-
-        guard let expectedSHA256 = addonConfig.currentArchSHA256?.trimmingCharacters(in: .whitespacesAndNewlines),
-              !expectedSHA256.isEmpty else {
-            setState(for: addon, to: .failed(error: "Missing SHA-256 checksum for add-on"))
-            throw BinaryDownloaderError.missingChecksum
-        }
-
-        do {
-            try FileManager.default.createDirectory(at: addonsDirectory, withIntermediateDirectories: true, attributes: nil)
-            let destination = binaryPath(for: addon)
-
-            try await BinaryDownloader.download(
-                from: downloadURL,
-                to: destination,
-                expectedSHA256: expectedSHA256
-            ) { progress in
-                Task { @MainActor in
-                    self.setState(for: addon, to: .downloading(progress: progress))
-                }
-            }
-
-            UserDefaults.standard.set(addonConfig.version, forKey: addon.defaultsKey)
-            setState(for: addon, to: .installed(version: addonConfig.version))
-
-        } catch {
-            setState(for: addon, to: .failed(error: error.localizedDescription))
-            throw error
-        }
-    }
-
     private func setState(for addon: AddonType, to state: AddonState) {
         switch addon {
         case .ytDlp: ytDlpState = state

Sources/Firelink/MediaExtractionEngine.swift

@@ -26,6 +26,11 @@ struct MediaMetadata: Decodable, Sendable, Equatable {
     }
 }
 
+enum MediaType: String, Sendable, Equatable {
+    case video = "Video"
+    case audio = "Audio"
+}
+
 struct CleanFormatOption: Identifiable, Equatable, Sendable {
     var id: String { name }
     let name: String
@@ -35,6 +40,10 @@ struct CleanFormatOption: Identifiable, Equatable, Sendable {
     let outputExtension: String
     let detail: String
     let estimatedBytes: Int64?
+    
+    let mediaType: MediaType
+    let qualityName: String
+    let containerName: String
 }
 
 enum MediaExtractionEngine {
@@ -51,7 +60,7 @@ enum MediaExtractionEngine {
             case .processFailed(let msg): return "Extraction failed: \(msg)"
             case .invalidOutput: return "Invalid output from media engine."
             case .parsingFailed(let err): return "Failed to parse metadata: \(err.localizedDescription)"
-            case .timedOut: return "Fetching metadata timed out. Try again, update yt-dlp, or change the selected browser cookie source."
+            case .timedOut: return "Fetching metadata timed out. Try again or change the selected browser cookie source."
             }
         }
     }
@@ -62,12 +71,13 @@ enum MediaExtractionEngine {
         credentials: DownloadCredentials?,
         transferOptions: DownloadTransferOptions
     ) async throws -> (MediaMetadata, [CleanFormatOption]) {
-        let ytDlpPath = await MediaEngineManager.shared.binaryPath(for: .ytDlp).path
-        guard FileManager.default.isExecutableFile(atPath: ytDlpPath) else {
+        guard let ytDlpURL = await MediaEngineManager.shared.binaryPath(for: .ytDlp),
+              FileManager.default.isExecutableFile(atPath: ytDlpURL.path) else {
             throw ExtractionError.processFailed("yt-dlp binary not found.")
         }
+        let ytDlpPath = ytDlpURL.path
 
-        var args = ["-J", "--no-warnings", "--ignore-no-formats-error", "--no-playlist", "--extractor-args", "youtube:player_client=ios,tv"]
+        var args = ["-J", "--no-warnings", "--ignore-no-formats-error", "--no-playlist", "--force-ipv4"]
         appendCommonArguments(to: &args, cookieSource: cookieSource, credentials: credentials, transferOptions: transferOptions)
         args.append(url.absoluteString)
 
@@ -116,11 +126,12 @@ enum MediaExtractionEngine {
     }
 
     private static func appendJavaScriptRuntimeArguments(to args: inout [String]) {
+        var runtimes: [String] = []
         if let denoPath = executablePath(named: "deno", candidates: [
             "/opt/homebrew/bin/deno",
             "/usr/local/bin/deno"
         ]) {
-            args.append(contentsOf: ["--js-runtimes", "deno:\(denoPath)"])
+            runtimes.append("deno:\(denoPath)")
         }
 
         if let nodePath = executablePath(named: "node", candidates: [
@@ -128,23 +139,28 @@ enum MediaExtractionEngine {
             "/usr/local/bin/node",
             "/usr/bin/node"
         ]) {
-            args.append(contentsOf: ["--js-runtimes", "node:\(nodePath)"])
+            runtimes.append("node:\(nodePath)")
+        }
+
+        if !runtimes.isEmpty {
+            args.append(contentsOf: ["--js-runtimes", runtimes.joined(separator: ",")])
         }
     }
 
     private static func executablePath(named name: String, candidates: [String]) -> String? {
-        if let path = candidates.first(where: { FileManager.default.isExecutableFile(atPath: $0) }) {
-            return path
-        }
+        var safeCandidates = candidates
+        safeCandidates.append(contentsOf: [
+            "/opt/homebrew/bin/\(name)",
+            "/usr/local/bin/\(name)",
+            "/usr/bin/\(name)",
+            "/opt/local/bin/\(name)"
+        ])
 
-        let pathEnvironment = ProcessInfo.processInfo.environment["PATH"] ?? ""
-        for directory in pathEnvironment.split(separator: ":") {
-            let candidate = URL(fileURLWithPath: String(directory)).appendingPathComponent(name).path
+        for candidate in safeCandidates {
             if FileManager.default.isExecutableFile(atPath: candidate) {
                 return candidate
             }
         }
-
         return nil
     }
 
@@ -187,7 +203,10 @@ enum MediaExtractionEngine {
                         base: height == nil ? "Best available video" : "Up to \(qualityName)",
                         estimatedBytes: estimatedBytes
                     ),
-                    estimatedBytes: estimatedBytes
+                    estimatedBytes: estimatedBytes,
+                    mediaType: .video,
+                    qualityName: qualityName,
+                    containerName: containerName
                 ))
             }
         }
@@ -201,7 +220,10 @@ enum MediaExtractionEngine {
                 symbol: "music.note",
                 outputExtension: "mp3",
                 detail: optionDetail(base: "Converted with ffmpeg", estimatedBytes: estimatedBytes),
-                estimatedBytes: estimatedBytes
+                estimatedBytes: estimatedBytes,
+                mediaType: .audio,
+                qualityName: "Best",
+                containerName: "MP3"
             ))
         }
 
@@ -214,7 +236,10 @@ enum MediaExtractionEngine {
                 symbol: "waveform",
                 outputExtension: "m4a",
                 detail: optionDetail(base: "Prefer native M4A", estimatedBytes: estimatedBytes),
-                estimatedBytes: estimatedBytes
+                estimatedBytes: estimatedBytes,
+                mediaType: .audio,
+                qualityName: "Best",
+                containerName: "M4A"
             ))
         }
 
@@ -227,7 +252,10 @@ enum MediaExtractionEngine {
                 symbol: "waveform",
                 outputExtension: "opus",
                 detail: optionDetail(base: "Efficient audio", estimatedBytes: estimatedBytes),
-                estimatedBytes: estimatedBytes
+                estimatedBytes: estimatedBytes,
+                mediaType: .audio,
+                qualityName: "Best",
+                containerName: "Opus"
             ))
         }
 
@@ -374,43 +402,57 @@ private final class YTDLPMetadataProcess: @unchecked Sendable {
             process.standardError = errorPipe
             process.standardInput = nil
 
+            let group = DispatchGroup()
+            group.enter() // output
+            group.enter() // error
+            group.enter() // process
+
             outputPipe.fileHandleForReading.readabilityHandler = { handle in
                 let data = handle.availableData
-                guard !data.isEmpty else { return }
-                outputBuffer.append(data)
+                if data.isEmpty {
+                    handle.readabilityHandler = nil
+                    group.leave()
+                } else {
+                    outputBuffer.append(data)
+                }
             }
+
             errorPipe.fileHandleForReading.readabilityHandler = { handle in
                 let data = handle.availableData
-                guard !data.isEmpty else { return }
-                errorBuffer.append(data)
+                if data.isEmpty {
+                    handle.readabilityHandler = nil
+                    group.leave()
+                } else {
+                    errorBuffer.append(data)
+                }
             }
 
             lock.withLock {
                 self.process = process
             }
 
-            process.terminationHandler = { finishedProcess in
-                outputPipe.fileHandleForReading.readabilityHandler = nil
-                errorPipe.fileHandleForReading.readabilityHandler = nil
+            process.terminationHandler = { _ in
+                group.leave()
+            }
 
-                if finishedProcess.terminationStatus == 0 {
+            group.notify(queue: .global()) {
+                if process.terminationStatus == 0 {
                     continuation.resume(returning: outputBuffer.data)
-                    return
-                }
-
-                let stderr = String(data: errorBuffer.data, encoding: .utf8)?
-                    .trimmingCharacters(in: .whitespacesAndNewlines)
-                let stdout = String(data: outputBuffer.data, encoding: .utf8)?
-                    .trimmingCharacters(in: .whitespacesAndNewlines)
-                let message = [stderr, stdout]
-                    .compactMap { $0 }
-                    .filter { !$0.isEmpty }
-                    .joined(separator: "\n")
-                continuation.resume(
-                    throwing: MediaExtractionEngine.ExtractionError.processFailed(
-                        message.isEmpty ? "Exit code \(finishedProcess.terminationStatus)" : message
+                } else {
+                    let stderr = String(data: errorBuffer.data, encoding: .utf8)?
+                        .trimmingCharacters(in: .whitespacesAndNewlines)
+                    let stdout = String(data: outputBuffer.data, encoding: .utf8)?
+                        .trimmingCharacters(in: .whitespacesAndNewlines)
+                    let message = [stderr, stdout]
+                        .compactMap { $0 }
+                        .filter { !$0.isEmpty }
+                        .joined(separator: "\n")
+                    continuation.resume(
+                        throwing: MediaExtractionEngine.ExtractionError.processFailed(
+                            message.isEmpty ? "Exit code \(process.terminationStatus)" : message
+                        )
                     )
-                )
+                }
             }
 
             do {
@@ -420,6 +462,7 @@ private final class YTDLPMetadataProcess: @unchecked Sendable {
             } catch {
                 outputPipe.fileHandleForReading.readabilityHandler = nil
                 errorPipe.fileHandleForReading.readabilityHandler = nil
+                // We do not care about the DispatchGroup if we throw immediately here
                 continuation.resume(throwing: MediaExtractionEngine.ExtractionError.processFailed(error.localizedDescription))
             }
         }

Sources/Firelink/MediaInspectorInlineView.swift

@@ -1,268 +0,0 @@
-import SwiftUI
-
-struct MediaInspectorInlineView: View {
-    let url: URL
-    let cookieSource: BrowserCookieSource
-    let credentials: DownloadCredentials?
-    let transferOptions: DownloadTransferOptions
-    let onCancel: () -> Void
-    let onDownload: (CleanFormatOption, MediaMetadata) -> Void
-
-    @ObservedObject private var engineManager = MediaEngineManager.shared
-
-    @State private var isLoading = true
-    @State private var statusText = "Checking Media Engine..."
-    @State private var metadata: MediaMetadata?
-    @State private var options: [CleanFormatOption] = []
-    @State private var errorMessage: String?
-    @State private var loadTask: Task<Void, Never>?
-
-    enum MediaType: String, CaseIterable, Identifiable {
-        case video = "Video"
-        case audio = "Audio"
-        var id: String { rawValue }
-    }
-
-    @State private var selectedType: MediaType = .video
-    @State private var selectedVideoQuality: String = "Best"
-    @State private var selectedVideoFormat: String = "MP4"
-    @State private var selectedAudioFormat: String = "MP3"
-
-    var body: some View {
-        HStack(spacing: 16) {
-            if isLoading {
-                ProgressView()
-                    .controlSize(.regular)
-
-                let ytState = engineManager.ytDlpState
-                let ffState = engineManager.ffmpegState
-
-                if case let .downloading(p) = ytState, p > 0 {
-                    Text("Downloading yt-dlp: \(Int(p * 100))%")
-                        .foregroundStyle(.secondary)
-                } else if case let .downloading(p) = ffState, p > 0 {
-                    Text("Downloading ffmpeg: \(Int(p * 100))%")
-                        .foregroundStyle(.secondary)
-                } else {
-                    VStack(alignment: .leading, spacing: 2) {
-                        Text(statusText)
-                            .foregroundStyle(.secondary)
-                        cookieStatusLabel
-                    }
-                }
-                Spacer()
-            } else if let errorMessage {
-                Image(systemName: "exclamationmark.triangle.fill")
-                    .foregroundStyle(.orange)
-                Text(errorMessage)
-                    .foregroundStyle(.secondary)
-                    .lineLimit(2)
-                Spacer()
-                Button("Retry") {
-                    loadMetadata()
-                }
-            } else if let metadata {
-                if let thumbnail = metadata.thumbnail {
-                    AsyncImage(url: thumbnail) { image in
-                        image
-                            .resizable()
-                            .aspectRatio(contentMode: .fill)
-                            .frame(width: 80, height: 50)
-                            .clipShape(RoundedRectangle(cornerRadius: 6, style: .continuous))
-                            .shadow(color: .black.opacity(0.1), radius: 2, y: 1)
-                    } placeholder: {
-                        RoundedRectangle(cornerRadius: 6)
-                            .fill(.quaternary)
-                            .frame(width: 80, height: 50)
-                    }
-                }
-
-                VStack(alignment: .leading, spacing: 4) {
-                    Text(metadata.title ?? "Unknown Title")
-                        .font(.subheadline.weight(.medium))
-                        .lineLimit(1)
-
-                    HStack(spacing: 12) {
-                        Picker("Type", selection: $selectedType) {
-                            ForEach(availableTypes) { type in
-                                Text(type.rawValue).tag(type)
-                            }
-                        }
-                        .labelsHidden()
-                        .frame(width: 80)
-
-                        if selectedType == .video {
-                            Picker("Quality", selection: $selectedVideoQuality) {
-                                ForEach(availableVideoQualities, id: \.self) { q in
-                                    Text(q).tag(q)
-                                }
-                            }
-                            .labelsHidden()
-                            .frame(width: 90)
-
-                            Picker("Format", selection: $selectedVideoFormat) {
-                                ForEach(availableVideoFormats, id: \.self) { f in
-                                    Text(f).tag(f)
-                                }
-                            }
-                            .labelsHidden()
-                            .frame(width: 80)
-                        } else {
-                            Picker("Format", selection: $selectedAudioFormat) {
-                                ForEach(availableAudioFormats, id: \.self) { f in
-                                    Text(f).tag(f)
-                                }
-                            }
-                            .labelsHidden()
-                            .frame(width: 90)
-                        }
-                    }
-
-                    if let selected = resolveSelectedOption() {
-                        Text(selected.detail)
-                            .font(.caption)
-                            .foregroundStyle(.secondary)
-                            .lineLimit(1)
-                    }
-                }
-
-                Spacer(minLength: 16)
-
-                Button("Cancel") {
-                    onCancel()
-                }
-                .keyboardShortcut(.cancelAction)
-
-                Button("Extract") {
-                    if let selected = resolveSelectedOption() {
-                        onDownload(selected, metadata)
-                    }
-                }
-                .buttonStyle(.borderedProminent)
-                .disabled(resolveSelectedOption() == nil)
-            }
-        }
-        .padding(12)
-        .background(
-            RoundedRectangle(cornerRadius: 10, style: .continuous)
-                .fill(.quaternary.opacity(0.35))
-        )
-        .onAppear {
-            loadMetadata()
-        }
-        .onDisappear {
-            loadTask?.cancel()
-            loadTask = nil
-        }
-        .onChange(of: url) { _, _ in loadMetadata() }
-        .onChange(of: cookieSource) { _, _ in loadMetadata() }
-        .onChange(of: credentials) { _, _ in loadMetadata() }
-        .onChange(of: transferOptions) { _, _ in loadMetadata() }
-        .onChange(of: selectedType) { _, _ in ensureValidSelection() }
-        .onChange(of: options) { _, _ in ensureValidSelection() }
-    }
-
-    private var availableTypes: [MediaType] {
-        var types: [MediaType] = []
-        if options.contains(where: { !$0.isAudioOnly }) { types.append(.video) }
-        if options.contains(where: { $0.isAudioOnly }) { types.append(.audio) }
-        return types
-    }
-
-    private var availableVideoQualities: [String] {
-        let qualities = options.filter { !$0.isAudioOnly }.map { $0.name.components(separatedBy: " ").first ?? "" }
-        return NSOrderedSet(array: qualities).array as? [String] ?? []
-    }
-
-    private var availableVideoFormats: [String] {
-        let formats = options.filter { !$0.isAudioOnly }.map { $0.name.components(separatedBy: " ").last ?? "" }
-        return NSOrderedSet(array: formats).array as? [String] ?? []
-    }
-
-    private var availableAudioFormats: [String] {
-        let formats = options.filter { $0.isAudioOnly }.map { $0.name.replacingOccurrences(of: "Audio ", with: "") }
-        return NSOrderedSet(array: formats).array as? [String] ?? []
-    }
-
-    private func ensureValidSelection() {
-        if !availableTypes.contains(selectedType), let first = availableTypes.first {
-            selectedType = first
-        }
-        if selectedType == .video {
-            if !availableVideoQualities.contains(selectedVideoQuality), let first = availableVideoQualities.first {
-                selectedVideoQuality = first
-            }
-            if !availableVideoFormats.contains(selectedVideoFormat), let first = availableVideoFormats.first {
-                selectedVideoFormat = first
-            }
-        } else {
-            if !availableAudioFormats.contains(selectedAudioFormat), let first = availableAudioFormats.first {
-                selectedAudioFormat = first
-            }
-        }
-    }
-
-    private func resolveSelectedOption() -> CleanFormatOption? {
-        if selectedType == .video {
-            return options.first { !$0.isAudioOnly && $0.name == "\(selectedVideoQuality) \(selectedVideoFormat)" }
-        } else {
-            return options.first { $0.isAudioOnly && $0.name == "Audio \(selectedAudioFormat)" }
-        }
-    }
-
-    @ViewBuilder
-    private var cookieStatusLabel: some View {
-        if let browserName = cookieSource.ytDlpBrowserName {
-            Label("Using \(browserName.capitalized) cookies", systemImage: "checkmark.circle.fill")
-                .font(.caption)
-                .foregroundStyle(.green)
-        } else {
-            Label("Browser cookies off", systemImage: "circle")
-                .font(.caption)
-                .foregroundStyle(.secondary)
-        }
-    }
-
-    private func loadMetadata() {
-        loadTask?.cancel()
-        isLoading = true
-        errorMessage = nil
-        metadata = nil
-        options = []
-
-        loadTask = Task {
-            do {
-                await MainActor.run { statusText = "Checking yt-dlp..." }
-                try await MediaEngineManager.shared.ensureAvailable(addons: [.ytDlp])
-                guard !Task.isCancelled else { return }
-
-                await MainActor.run { statusText = "Fetching Metadata..." }
-                let (fetchedMetadata, fetchedOptions) = try await MediaExtractionEngine.fetchMetadata(
-                    for: url,
-                    cookieSource: cookieSource,
-                    credentials: credentials,
-                    transferOptions: transferOptions
-                )
-                guard !Task.isCancelled else { return }
-
-                await MainActor.run {
-                    if fetchedOptions.isEmpty {
-                        self.errorMessage = "No downloadable media formats were found."
-                    } else {
-                        self.metadata = fetchedMetadata
-                        self.options = fetchedOptions
-                        self.ensureValidSelection()
-                    }
-                    self.loadTask = nil
-                    withAnimation { self.isLoading = false }
-                }
-            } catch {
-                await MainActor.run {
-                    self.errorMessage = error.localizedDescription
-                    self.loadTask = nil
-                    withAnimation { self.isLoading = false }
-                }
-            }
-        }
-    }
-}

Sources/Firelink/ReleaseUpdateChecker.swift

@@ -0,0 +1,325 @@
+import Foundation
+
+struct GitHubReleaseCheckService: @unchecked Sendable {
+    private let owner: String
+    private let repository: String
+    private let fetch: @Sendable (URLRequest) async throws -> (Data, URLResponse)
+
+    init(
+        owner: String = "nimbold",
+        repository: String = "Firelink",
+        fetch: @escaping @Sendable (URLRequest) async throws -> (Data, URLResponse) = { request in
+            try await URLSession.shared.data(for: request)
+        }
+    ) {
+        self.owner = owner
+        self.repository = repository
+        self.fetch = fetch
+    }
+
+    func checkForUpdate(currentVersion: String) async throws -> ReleaseCheckOutcome {
+        guard let current = AppVersion(currentVersion) else {
+            throw ReleaseCheckFailure.invalidCurrentVersion(currentVersion)
+        }
+
+        let release = try await latestStableRelease()
+        guard let latest = AppVersion(release.tagName) else {
+            throw ReleaseCheckFailure.invalidReleaseVersion(release.tagName)
+        }
+
+        let update = AvailableReleaseUpdate(
+            version: latest.description,
+            tagName: release.tagName,
+            title: release.name?.isEmpty == false ? release.name! : release.tagName,
+            releaseNotes: release.body?.isEmpty == false ? release.body! : "No release notes were provided for this version.",
+            releaseURL: release.htmlURL,
+            publishedAt: release.publishedAt
+        )
+
+        if latest > current {
+            return .updateAvailable(update)
+        }
+
+        return .upToDate(latestVersion: latest.description, localVersion: current.description)
+    }
+
+    private func latestStableRelease() async throws -> GitHubRelease {
+        guard let url = URL(string: "https://api.github.com/repos/\(owner)/\(repository)/releases?per_page=30") else {
+            throw ReleaseCheckFailure.invalidReleaseURL
+        }
+
+        var request = URLRequest(url: url)
+        request.setValue("application/vnd.github+json", forHTTPHeaderField: "Accept")
+        request.setValue("Firelink", forHTTPHeaderField: "User-Agent")
+
+        let (data, response) = try await fetch(request)
+
+        guard let httpResponse = response as? HTTPURLResponse else {
+            throw ReleaseCheckFailure.invalidResponse
+        }
+
+        guard (200..<300).contains(httpResponse.statusCode) else {
+            throw ReleaseCheckFailure.httpStatus(httpResponse.statusCode)
+        }
+
+        let releases = try JSONDecoder.githubReleaseDecoder.decode([GitHubRelease].self, from: data)
+        let stableReleases = releases.filter { !$0.draft && !$0.prerelease }
+        guard !stableReleases.isEmpty else {
+            throw ReleaseCheckFailure.noStableRelease
+        }
+
+        let versionedReleases = stableReleases.compactMap { release -> (release: GitHubRelease, version: AppVersion)? in
+            guard let version = AppVersion(release.tagName) else { return nil }
+            return (release, version)
+        }
+
+        guard let latest = versionedReleases.max(by: { $0.version < $1.version }) else {
+            throw ReleaseCheckFailure.invalidReleaseVersion(stableReleases[0].tagName)
+        }
+
+        return latest.release
+    }
+}
+
+struct GitHubRelease: Decodable, Equatable {
+    let tagName: String
+    let name: String?
+    let body: String?
+    let htmlURL: URL
+    let draft: Bool
+    let prerelease: Bool
+    let publishedAt: Date?
+
+    private enum CodingKeys: String, CodingKey {
+        case tagName = "tag_name"
+        case name
+        case body
+        case htmlURL = "html_url"
+        case draft
+        case prerelease
+        case publishedAt = "published_at"
+    }
+}
+
+struct AvailableReleaseUpdate: Equatable, Identifiable {
+    var id: String { tagName }
+    let version: String
+    let tagName: String
+    let title: String
+    let releaseNotes: String
+    let releaseURL: URL
+    let publishedAt: Date?
+}
+
+enum ReleaseCheckOutcome: Equatable {
+    case updateAvailable(AvailableReleaseUpdate)
+    case upToDate(latestVersion: String, localVersion: String)
+}
+
+enum ReleaseUpdateState: Equatable {
+    case idle
+    case checking
+    case updateAvailable(AvailableReleaseUpdate)
+    case upToDate(latestVersion: String, localVersion: String)
+    case failed(message: String, recovery: String)
+}
+
+enum ReleaseCheckFailure: Error, Equatable {
+    case invalidReleaseURL
+    case invalidResponse
+    case httpStatus(Int)
+    case noStableRelease
+    case invalidCurrentVersion(String)
+    case invalidReleaseVersion(String)
+}
+
+@MainActor
+final class ReleaseUpdateChecker: ObservableObject {
+    @Published private(set) var state: ReleaseUpdateState = .idle
+    @Published var automaticallyChecksForUpdates: Bool {
+        didSet {
+            UserDefaults.standard.set(automaticallyChecksForUpdates, forKey: Self.automaticChecksKey)
+        }
+    }
+
+    private let service: GitHubReleaseCheckService
+    private let bundle: Bundle
+    private var automaticCheckTask: Task<Void, Never>?
+
+    private static let automaticChecksKey = "AutomaticallyCheckForReleaseUpdates"
+    private static let lastAutomaticCheckKey = "LastReleaseUpdateCheckDate"
+    private static let automaticCheckInterval: TimeInterval = 24 * 60 * 60
+
+    init(service: GitHubReleaseCheckService = GitHubReleaseCheckService(), bundle: Bundle = .main) {
+        self.service = service
+        self.bundle = bundle
+
+        if UserDefaults.standard.object(forKey: Self.automaticChecksKey) == nil {
+            self.automaticallyChecksForUpdates = true
+        } else {
+            self.automaticallyChecksForUpdates = UserDefaults.standard.bool(forKey: Self.automaticChecksKey)
+        }
+    }
+
+    var currentVersion: String {
+        bundle.infoDictionary?["CFBundleShortVersionString"] as? String ?? "0.1.0"
+    }
+
+    func checkForUpdates() {
+        guard state != .checking else { return }
+        state = .checking
+
+        Task {
+            do {
+                let outcome = try await service.checkForUpdate(currentVersion: currentVersion)
+                UserDefaults.standard.set(Date(), forKey: Self.lastAutomaticCheckKey)
+                apply(outcome)
+            } catch {
+                state = Self.failedState(for: error)
+            }
+        }
+    }
+
+    func checkAutomaticallyIfNeeded() {
+        guard automaticallyChecksForUpdates else { return }
+        guard state == .idle else { return }
+
+        if let lastCheck = UserDefaults.standard.object(forKey: Self.lastAutomaticCheckKey) as? Date,
+           Date().timeIntervalSince(lastCheck) < Self.automaticCheckInterval {
+            return
+        }
+
+        automaticCheckTask?.cancel()
+        automaticCheckTask = Task { [weak self] in
+            self?.checkForUpdates()
+        }
+    }
+
+    private func apply(_ outcome: ReleaseCheckOutcome) {
+        switch outcome {
+        case .updateAvailable(let update):
+            state = .updateAvailable(update)
+        case .upToDate(let latestVersion, let localVersion):
+            state = .upToDate(latestVersion: latestVersion, localVersion: localVersion)
+        }
+    }
+
+    private static func failedState(for error: Error) -> ReleaseUpdateState {
+        if let urlError = error as? URLError {
+            switch urlError.code {
+            case .notConnectedToInternet, .networkConnectionLost, .cannotFindHost, .cannotConnectToHost, .timedOut:
+                return .failed(
+                    message: "Couldn't reach GitHub.",
+                    recovery: "Check your internet connection, then try again."
+                )
+            default:
+                return .failed(
+                    message: "The update check couldn't finish.",
+                    recovery: urlError.localizedDescription
+                )
+            }
+        }
+
+        if let failure = error as? ReleaseCheckFailure {
+            switch failure {
+            case .httpStatus(let statusCode):
+                return .failed(
+                    message: "GitHub returned HTTP \(statusCode).",
+                    recovery: "Try again in a moment, or open the releases page manually."
+                )
+            case .noStableRelease:
+                return .failed(
+                    message: "No stable release was found.",
+                    recovery: "Open GitHub Releases to check the project manually."
+                )
+            case .invalidCurrentVersion(let version):
+                return .failed(
+                    message: "Firelink's current version could not be read.",
+                    recovery: "The app reported version \(version)."
+                )
+            case .invalidReleaseVersion(let tag):
+                return .failed(
+                    message: "The latest release tag could not be compared.",
+                    recovery: "GitHub reported \(tag)."
+                )
+            case .invalidReleaseURL, .invalidResponse:
+                return .failed(
+                    message: "The GitHub response could not be read.",
+                    recovery: "Try again in a moment."
+                )
+            }
+        }
+
+        return .failed(
+            message: "The update check failed.",
+            recovery: error.localizedDescription
+        )
+    }
+}
+
+struct AppVersion: Comparable, CustomStringConvertible {
+    private let components: [Int]
+
+    init?(_ rawValue: String) {
+        var value = rawValue.trimmingCharacters(in: .whitespacesAndNewlines)
+        if value.hasPrefix("v") || value.hasPrefix("V") {
+            value.removeFirst()
+        }
+
+        let prefix = value.prefix { character in
+            character.isNumber || character == "."
+        }
+
+        let version = String(prefix).trimmingCharacters(in: CharacterSet(charactersIn: "."))
+        guard !version.isEmpty else { return nil }
+
+        let components = version.split(separator: ".").compactMap { Int($0) }
+        guard !components.isEmpty, components.count == version.split(separator: ".").count else {
+            return nil
+        }
+
+        self.components = components
+    }
+
+    var description: String {
+        components.map(String.init).joined(separator: ".")
+    }
+
+    static func < (lhs: AppVersion, rhs: AppVersion) -> Bool {
+        let count = max(lhs.components.count, rhs.components.count)
+
+        for index in 0..<count {
+            let left = index < lhs.components.count ? lhs.components[index] : 0
+            let right = index < rhs.components.count ? rhs.components[index] : 0
+
+            if left != right {
+                return left < right
+            }
+        }
+
+        return false
+    }
+
+    static func == (lhs: AppVersion, rhs: AppVersion) -> Bool {
+        let count = max(lhs.components.count, rhs.components.count)
+
+        for index in 0..<count {
+            let left = index < lhs.components.count ? lhs.components[index] : 0
+            let right = index < rhs.components.count ? rhs.components[index] : 0
+
+            if left != right {
+                return false
+            }
+        }
+
+        return true
+    }
+}
+
+private extension JSONDecoder {
+    static var githubReleaseDecoder: JSONDecoder {
+        let decoder = JSONDecoder()
+        decoder.dateDecodingStrategy = .iso8601
+        return decoder
+    }
+}

Sources/Firelink/Settings/AboutSettingsPane.swift

@@ -2,11 +2,13 @@ import AppKit
 import SwiftUI
 
 struct AboutSettingsPane: View {
-    @EnvironmentObject var sparkleUpdater: SparkleUpdater
+    @EnvironmentObject private var updateChecker: ReleaseUpdateChecker
 
-    private let developerProfileURL = URL(string: "https://github.com/nimbold")!
     private let projectURL = URL(string: "https://github.com/nimbold/Firelink")!
+    private let releasesURL = URL(string: "https://github.com/nimbold/Firelink/releases")!
     private let aria2URL = URL(string: "https://aria2.github.io/")!
+    private let ytDlpURL = URL(string: "https://github.com/yt-dlp/yt-dlp")!
+    private let ffmpegURL = URL(string: "https://ffmpeg.org/")!
     private let licenseURL = URL(string: "https://github.com/nimbold/Firelink/blob/main/LICENSE")!
 
     private var appVersion: String {
@@ -29,7 +31,7 @@ struct AboutSettingsPane: View {
                     VStack(alignment: .leading, spacing: 4) {
                         Text("Firelink")
                             .font(.title2.weight(.bold))
-                        Text("Version \(appVersion)")
+                        Text("Version \(appVersion) (\(buildNumber))")
                             .foregroundStyle(.secondary)
                         Text("A native macOS download manager for fast, organized, segmented transfers.")
                             .font(.caption)
@@ -41,176 +43,15 @@ struct AboutSettingsPane: View {
 
             Section("Updates") {
                 VStack(alignment: .leading, spacing: 16) {
-                    if sparkleUpdater.isChecking {
-                        HStack(spacing: 12) {
-                            ProgressView()
-                                .controlSize(.small)
-                            Text("Checking for updates...")
-                                .foregroundStyle(.secondary)
-                        }
-                    } else if sparkleUpdater.isDownloading || sparkleUpdater.isExtracting {
-                        VStack(alignment: .leading, spacing: 8) {
-                            HStack {
-                                Text(sparkleUpdater.isDownloading ? "Downloading update..." : "Extracting update...")
-                                    .font(.subheadline)
-                                    .fontWeight(.medium)
-                                Spacer()
-                                if sparkleUpdater.isDownloading && sparkleUpdater.downloadProgress > 0 {
-                                    Text("\(Int(sparkleUpdater.downloadProgress * 100))%")
-                                        .font(.caption.monospacedDigit())
-                                        .foregroundStyle(.secondary)
-                                }
-                            }
-                            ProgressView(value: sparkleUpdater.isDownloading ? sparkleUpdater.downloadProgress : sparkleUpdater.extractionProgress)
-                                .tint(.accentColor)
-                            
-                            Button("Cancel") {
-                                sparkleUpdater.cancellation?()
-                            }
-                            .controlSize(.small)
-                        }
-                    } else if sparkleUpdater.isReadyToInstall {
-                        VStack(alignment: .leading, spacing: 12) {
-                            HStack {
-                                Image(systemName: "arrow.down.app.fill")
-                                    .foregroundStyle(.green)
-                                    .font(.title2)
-                                VStack(alignment: .leading) {
-                                    Text("Update Ready")
-                                        .font(.headline)
-                                    Text("The new version is ready to be installed.")
-                                        .font(.subheadline)
-                                        .foregroundStyle(.secondary)
-                                }
-                            }
-                            
-                            Button {
-                                sparkleUpdater.updateChoiceReply?(.install)
-                            } label: {
-                                Label("Install and Relaunch", systemImage: "sparkles")
-                                    .frame(maxWidth: .infinity)
-                            }
-                            .buttonStyle(.borderedProminent)
-                            .controlSize(.large)
-                        }
-                    } else if let item = sparkleUpdater.foundUpdateItem {
-                        VStack(alignment: .leading, spacing: 12) {
-                            HStack(alignment: .top, spacing: 12) {
-                                Image(systemName: "exclamationmark.arrow.circlepath")
-                                    .foregroundStyle(.orange)
-                                    .font(.title)
-                                VStack(alignment: .leading, spacing: 4) {
-                                    Text("Update Available")
-                                        .font(.headline)
-                                    Text("Version \(item.displayVersionString) is available.")
-                                        .font(.subheadline)
-                                        .foregroundStyle(.secondary)
-                                }
-                            }
-                            
-                            if let notes = sparkleUpdater.releaseNotes, !notes.isEmpty {
-                                DisclosureGroup("What's New") {
-                                    ScrollView {
-                                        Text(notes)
-                                            .font(.caption)
-                                            .frame(maxWidth: .infinity, alignment: .leading)
-                                            .textSelection(.enabled)
-                                    }
-                                    .frame(maxHeight: 150)
-                                    .padding(8)
-                                    .background(Color(NSColor.controlBackgroundColor))
-                                    .cornerRadius(6)
-                                }
-                            }
-                            
-                            HStack(spacing: 12) {
-                                Button {
-                                    sparkleUpdater.updateChoiceReply?(.install)
-                                } label: {
-                                    Text("Download & Install")
-                                }
-                                .buttonStyle(.borderedProminent)
-                                
-                                Button("Skip This Version") {
-                                    sparkleUpdater.updateChoiceReply?(.skip)
-                                }
-                            }
-                        }
-                    } else {
-                        // Up to date or initial state
-                        if let status = sparkleUpdater.updateStatus, status == "You're up to date!" {
-                            VStack(alignment: .leading, spacing: 12) {
-                                HStack(alignment: .top, spacing: 12) {
-                                    Image(systemName: "checkmark.circle.fill")
-                                        .foregroundStyle(.green)
-                                        .font(.title)
-                                    VStack(alignment: .leading, spacing: 4) {
-                                        Text("You're up to date!")
-                                            .font(.headline)
-                                        Text("Firelink \(appVersion) is the newest version available.")
-                                            .font(.subheadline)
-                                            .foregroundStyle(.secondary)
-                                    }
-                                }
-                                
-                                HStack(spacing: 12) {
-                                    Button {
-                                        sparkleUpdater.checkForUpdates()
-                                    } label: {
-                                        Label("Check Again", systemImage: "arrow.clockwise")
-                                    }
-                                    .buttonStyle(.bordered)
-                                    
-                                    Button {
-                                        NSWorkspace.shared.open(projectURL.appendingPathComponent("releases"))
-                                    } label: {
-                                        Label("Release Notes", systemImage: "doc.text")
-                                    }
-                                }
-                            }
-                        } else {
-                            HStack(spacing: 12) {
-                                if let status = sparkleUpdater.updateStatus {
-                                    if status.lowercased().contains("failed") || status.lowercased().contains("error") {
-                                        Image(systemName: "xmark.octagon.fill")
-                                            .foregroundStyle(.red)
-                                    } else {
-                                        Image(systemName: "info.circle.fill")
-                                            .foregroundStyle(.blue)
-                                    }
-                                    Text(status)
-                                        .font(.subheadline)
-                                        .foregroundStyle(.secondary)
-                                } else {
-                                    Text("Keeping your app up to date ensures you have the latest features and security improvements.")
-                                        .font(.subheadline)
-                                        .foregroundStyle(.secondary)
-                                }
-                            }
+                    updateStatusView
 
-                            HStack(spacing: 12) {
-                                Button {
-                                    sparkleUpdater.checkForUpdates()
-                                } label: {
-                                    Label("Check for Updates", systemImage: "arrow.clockwise")
-                                }
-                                .buttonStyle(.bordered)
-                                
-                                Button {
-                                    NSWorkspace.shared.open(projectURL.appendingPathComponent("releases"))
-                                } label: {
-                                    Label("Release Notes", systemImage: "doc.text")
-                                }
-                            }
-                        }
-                    }
+                    Divider()
+                        .padding(.vertical, 2)
+
+                    Toggle("Automatically check for updates", isOn: $updateChecker.automaticallyChecksForUpdates)
                 }
                 .padding(.vertical, 8)
-                .animation(.easeInOut, value: sparkleUpdater.isChecking)
-                .animation(.easeInOut, value: sparkleUpdater.isDownloading)
-                .animation(.easeInOut, value: sparkleUpdater.isExtracting)
-                .animation(.easeInOut, value: sparkleUpdater.isReadyToInstall)
-                .animation(.easeInOut, value: sparkleUpdater.foundUpdateItem != nil)
+                .animation(.easeInOut, value: updateChecker.state)
             }
 
             Section {
@@ -236,7 +77,13 @@ struct AboutSettingsPane: View {
 
                     HStack {
                         Text("Powered by")
-                        Link("aria2", destination: aria2URL)
+                        HStack(spacing: 4) {
+                            Link("aria2", destination: aria2URL)
+                            Text("•").foregroundStyle(.secondary)
+                            Link("yt-dlp", destination: ytDlpURL)
+                            Text("•").foregroundStyle(.secondary)
+                            Link("ffmpeg", destination: ffmpegURL)
+                        }
                         Spacer()
                         Link("MIT License", destination: licenseURL)
                     }
@@ -251,4 +98,84 @@ struct AboutSettingsPane: View {
         }
         .formStyle(.grouped)
     }
+
+    @ViewBuilder
+    private var updateStatusView: some View {
+        HStack(alignment: .center) {
+            switch updateChecker.state {
+            case .idle:
+                VStack(alignment: .leading, spacing: 2) {
+                    Text("Check for Updates")
+                        .font(.headline)
+                    Text("Firelink checks GitHub Releases for new versions.")
+                        .font(.subheadline)
+                        .foregroundStyle(.secondary)
+                }
+                Spacer()
+                Button("Check Now") {
+                    updateChecker.checkForUpdates()
+                }
+
+            case .checking:
+                VStack(alignment: .leading, spacing: 2) {
+                    Text("Checking for updates...")
+                        .font(.headline)
+                    Text("Connecting to GitHub...")
+                        .font(.subheadline)
+                        .foregroundStyle(.secondary)
+                }
+                Spacer()
+                ProgressView()
+                    .controlSize(.small)
+                    .padding(.trailing, 16)
+
+            case .updateAvailable(let update):
+                VStack(alignment: .leading, spacing: 2) {
+                    Text("Firelink \(update.version) is available!")
+                        .font(.headline)
+                    Text("You currently have version \(appVersion).")
+                        .font(.subheadline)
+                        .foregroundStyle(.secondary)
+                    
+                    Link("View Release Notes", destination: update.releaseURL)
+                        .font(.caption)
+                        .padding(.top, 2)
+                }
+                Spacer()
+                Button("Download Update") {
+                    NSWorkspace.shared.open(update.releaseURL)
+                }
+                .buttonStyle(.borderedProminent)
+
+            case .upToDate(let latestVersion, _):
+                VStack(alignment: .leading, spacing: 2) {
+                    Text("Firelink is up to date")
+                        .font(.headline)
+                    Text("Version \(latestVersion) is the newest stable release.")
+                        .font(.subheadline)
+                        .foregroundStyle(.secondary)
+                }
+                Spacer()
+                Button("Check Again") {
+                    updateChecker.checkForUpdates()
+                }
+
+            case .failed(let message, let recovery):
+                VStack(alignment: .leading, spacing: 2) {
+                    Text(message)
+                        .font(.headline)
+                    Text(recovery)
+                        .font(.subheadline)
+                        .foregroundStyle(.secondary)
+                        .lineLimit(2)
+                }
+                Spacer()
+                Button("Try Again") {
+                    updateChecker.checkForUpdates()
+                }
+            }
+        }
+        .padding(.vertical, 4)
+    }
+
 }

Sources/Firelink/Settings/EngineSettingsPane.swift

@@ -6,9 +6,6 @@ struct EngineSettingsPane: View {
     @StateObject private var engineManager = MediaEngineManager.shared
     @State private var version = "Checking..."
 
-    @State private var isCheckingForUpdates = false
-    @State private var updateCheckResult: String?
-
     private var executableURL: URL? {
         Aria2DownloadEngine.findExecutable()
     }
@@ -16,23 +13,13 @@ struct EngineSettingsPane: View {
     var body: some View {
         Form {
             Section {
-                LabeledContent("Status") {
-                    if executableURL != nil {
-                        Label("Ready", systemImage: "checkmark.seal.fill")
-                            .foregroundStyle(.green)
-                    } else {
-                        Label("Missing", systemImage: "exclamationmark.triangle.fill")
-                            .foregroundStyle(.orange)
-                    }
-                }
-                
                 LabeledContent("Version") {
                     Text(version)
                         .font(.system(.body, design: .monospaced))
                         .foregroundStyle(.secondary)
                         .textSelection(.enabled)
                 }
-                
+
                 LabeledContent("Binary Path") {
                     Text(executableURL?.path ?? "Not found")
                         .font(.system(.caption, design: .monospaced))
@@ -54,40 +41,10 @@ struct EngineSettingsPane: View {
             }
 
             Section {
-                LabeledContent("Updates") {
-                    HStack(spacing: 8) {
-                        Button {
-                            checkMediaEngineUpdates()
-                        } label: {
-                            Text("Check for Updates")
-                        }
-                        .disabled(isDownloadingMediaEngines || isCheckingForUpdates)
+                addonStatusRow(title: "yt-dlp", state: engineManager.ytDlpState, path: engineManager.binaryPath(for: .ytDlp))
 
-                        if isCheckingForUpdates {
-                            ProgressView().controlSize(.small)
-                            Text("Checking...")
-                                .foregroundStyle(.secondary)
-                                .font(.subheadline)
-                        } else if let result = updateCheckResult {
-                            if result == "Up to date" || result == "Updated successfully" {
-                                Image(systemName: "checkmark.circle.fill")
-                                    .foregroundStyle(.green)
-                                Text(result)
-                                    .foregroundStyle(.secondary)
-                                    .font(.subheadline)
-                            } else {
-                                Image(systemName: "exclamationmark.triangle.fill")
-                                    .foregroundStyle(.red)
-                                Text(result)
-                                    .foregroundStyle(.red)
-                                    .font(.subheadline)
-                            }
-                        }
-                    }
-                }
+                addonStatusRow(title: "FFmpeg", state: engineManager.ffmpegState, path: engineManager.binaryPath(for: .ffmpeg))
 
-                addonStatusRow(title: "yt-dlp", state: engineManager.ytDlpState)
-                
                 LabeledContent("Browser Cookies") {
                     Picker("", selection: $settings.mediaCookieSource) {
                         ForEach(BrowserCookieSource.allCases, id: \.self) { source in
@@ -97,14 +54,12 @@ struct EngineSettingsPane: View {
                     .labelsHidden()
                     .frame(maxWidth: 200)
                 }
-                
-                addonStatusRow(title: "FFmpeg", state: engineManager.ffmpegState)
             } header: {
                 Text("Media Extractors")
             } footer: {
                 VStack(alignment: .leading, spacing: 8) {
                     Text("Powers video and audio extraction from supported sites.")
-                    
+
                     if settings.mediaCookieSource != .none {
                         Text(settings.mediaCookieSource.statusDetail)
                     }
@@ -117,63 +72,30 @@ struct EngineSettingsPane: View {
         }
     }
 
-    private func checkMediaEngineUpdates() {
-        Task {
-            isCheckingForUpdates = true
-            updateCheckResult = nil
-            // Brief visual feedback delay
-            try? await Task.sleep(nanoseconds: 800_000_000)
-
-            do {
-                let wasDownloading = isDownloadingMediaEngines
-                try await engineManager.ensureInstalled()
-                if wasDownloading || isDownloadingMediaEngines {
-                    updateCheckResult = "Updated successfully"
-                } else {
-                    updateCheckResult = "Up to date"
-                }
-            } catch {
-                updateCheckResult = "Update failed: \(error.localizedDescription)"
-            }
-
-            isCheckingForUpdates = false
-            try? await Task.sleep(nanoseconds: 4_000_000_000)
-            if !isCheckingForUpdates {
-                withAnimation {
-                    updateCheckResult = nil
-                }
-            }
-        }
-    }
-
-    private var isDownloadingMediaEngines: Bool {
-        if case .downloading = engineManager.ytDlpState { return true }
-        if case .downloading = engineManager.ffmpegState { return true }
-        return false
-    }
-
     @ViewBuilder
-    private func addonStatusRow(title: String, state: AddonState) -> some View {
+    private func addonStatusRow(title: String, state: AddonState, path: URL?) -> some View {
         LabeledContent(title) {
-            switch state {
-            case .notInstalled:
-                Label("Missing", systemImage: "xmark.circle.fill")
-                    .foregroundStyle(.orange)
-            case .downloading(let progress):
-                HStack(spacing: 6) {
-                    ProgressView(value: progress)
-                        .frame(width: 60)
-                    Text("\(Int(progress * 100))%")
-                        .monospacedDigit()
+            VStack(alignment: .trailing) {
+                switch state {
+                case .notInstalled:
+                    Text("Missing")
+                        .foregroundStyle(.red)
+                case .installed(let version):
+                    Text(version)
+                        .foregroundStyle(.secondary)
+                        .font(.system(.body, design: .monospaced))
+                case .failed(let error):
+                    Text("Error")
+                        .foregroundStyle(.red)
+                        .help(error)
                 }
-            case .installed(let version):
-                Label("v\(version)", systemImage: "checkmark.seal.fill")
-                    .foregroundStyle(.green)
-                    .font(.system(.body, design: .monospaced))
-            case .failed(let error):
-                Label("Failed", systemImage: "exclamationmark.triangle.fill")
-                    .foregroundStyle(.red)
-                    .help(error)
+
+                Text(path?.path ?? "Not found")
+                    .font(.system(.caption, design: .monospaced))
+                    .foregroundStyle(.tertiary)
+                    .lineLimit(1)
+                    .truncationMode(.middle)
+                    .textSelection(.enabled)
             }
         }
     }

Sources/Firelink/Settings/InlineUpdateUserDriver.swift

@@ -1,148 +0,0 @@
-import Foundation
-import AppKit
-import Sparkle
-
-class InlineUpdateUserDriver: NSObject, SPUUserDriver {
-    weak var updater: SparkleUpdater?
-    
-    init(updater: SparkleUpdater) {
-        self.updater = updater
-    }
-    
-    func show(_ request: SPUUpdatePermissionRequest, reply: @escaping (SUUpdatePermissionResponse) -> Void) {
-        reply(SUUpdatePermissionResponse(automaticUpdateChecks: true, sendSystemProfile: false))
-    }
-    
-    func showUserInitiatedUpdateCheck(cancellation: @escaping () -> Void) {
-        DispatchQueue.main.async {
-            self.updater?.resetState()
-            self.updater?.isChecking = true
-            self.updater?.updateStatus = "Checking for updates..."
-            self.updater?.cancellation = cancellation
-        }
-    }
-    
-    func showUpdateFound(with appcastItem: SUAppcastItem, state: SPUUserUpdateState, reply: @escaping (SPUUserUpdateChoice) -> Void) {
-        DispatchQueue.main.async {
-            self.updater?.isChecking = false
-            self.updater?.foundUpdateItem = appcastItem
-            self.updater?.updateStatus = "Update available: Version \(appcastItem.displayVersionString)"
-            self.updater?.updateChoiceReply = reply
-        }
-    }
-    
-    func showUpdateReleaseNotes(with downloadData: SPUDownloadData) {
-        DispatchQueue.main.async {
-            if let htmlString = String(data: downloadData.data, encoding: .utf8) {
-                self.updater?.releaseNotes = self.stripHTML(htmlString)
-            }
-        }
-    }
-    
-    private func stripHTML(_ string: String) -> String {
-        guard let data = string.data(using: .utf8) else { return string }
-        if let attributedString = try? NSAttributedString(data: data, options: [.documentType: NSAttributedString.DocumentType.html, .characterEncoding: String.Encoding.utf8.rawValue], documentAttributes: nil) {
-            return attributedString.string.trimmingCharacters(in: .whitespacesAndNewlines)
-        }
-        return string
-    }
-    
-    func showUpdateReleaseNotesFailedToDownloadWithError(_ error: Error) {
-    }
-    
-    func showUpdateNotFoundWithError(_ error: Error, acknowledgement: @escaping () -> Void) {
-        DispatchQueue.main.async {
-            self.updater?.isChecking = false
-            let nsError = error as NSError
-            if nsError.domain == SUSparkleErrorDomain && nsError.code == 1001 {
-                self.updater?.updateStatus = "You're up to date!"
-            } else {
-                self.updater?.updateStatus = "Update check failed: \(error.localizedDescription)"
-            }
-            acknowledgement()
-        }
-    }
-    
-    func showUpdaterError(_ error: Error, acknowledgement: @escaping () -> Void) {
-        DispatchQueue.main.async {
-            self.updater?.isChecking = false
-            self.updater?.updateStatus = "Updater error: \(error.localizedDescription)"
-            acknowledgement()
-        }
-    }
-    
-    func showDownloadInitiated(cancellation: @escaping () -> Void) {
-        DispatchQueue.main.async {
-            self.updater?.isDownloading = true
-            self.updater?.downloadProgress = 0.0
-            self.updater?.cancellation = cancellation
-            self.updater?.updateStatus = "Downloading update..."
-        }
-    }
-    
-    func showDownloadDidReceiveExpectedContentLength(_ expectedContentLength: UInt64) {
-        DispatchQueue.main.async {
-            self.updater?.expectedContentLength = expectedContentLength
-            self.updater?.receivedContentLength = 0
-        }
-    }
-    
-    func showDownloadDidReceiveData(ofLength length: UInt64) {
-        DispatchQueue.main.async {
-            if let updater = self.updater {
-                updater.receivedContentLength += length
-                if updater.expectedContentLength > 0 {
-                    updater.downloadProgress = Double(updater.receivedContentLength) / Double(updater.expectedContentLength)
-                }
-            }
-        }
-    }
-    
-    func showDownloadDidStartExtractingUpdate() {
-        DispatchQueue.main.async {
-            self.updater?.isDownloading = false
-            self.updater?.isExtracting = true
-            self.updater?.updateStatus = "Extracting update..."
-            self.updater?.downloadProgress = 1.0
-        }
-    }
-    
-    func showExtractionReceivedProgress(_ progress: Double) {
-        DispatchQueue.main.async {
-            self.updater?.extractionProgress = progress
-        }
-    }
-    
-    func showReady(toInstallAndRelaunch reply: @escaping (SPUUserUpdateChoice) -> Void) {
-        DispatchQueue.main.async {
-            self.updater?.isExtracting = false
-            self.updater?.isReadyToInstall = true
-            self.updater?.updateStatus = "Ready to install"
-            self.updater?.updateChoiceReply = reply
-        }
-    }
-    
-    func showInstallingUpdate(withApplicationTerminated applicationTerminated: Bool, retryTerminatingApplication: @escaping () -> Void) {
-    }
-    
-    func showUpdateInstalledAndRelaunched(_ relaunched: Bool, acknowledgement: @escaping () -> Void) {
-        acknowledgement()
-    }
-    
-    func dismissUpdateInstallation() {
-        DispatchQueue.main.async {
-            self.updater?.isChecking = false
-            self.updater?.isDownloading = false
-            self.updater?.isExtracting = false
-            self.updater?.isReadyToInstall = false
-            self.updater?.downloadProgress = 0.0
-            self.updater?.extractionProgress = 0.0
-            self.updater?.foundUpdateItem = nil
-            self.updater?.releaseNotes = nil
-            // Do not clear updateStatus here so success/error messages remain visible.
-        }
-    }
-    
-    func showUpdateInFocus() {
-    }
-}

Sources/Firelink/Settings/IntegrationSettingsPane.swift

@@ -3,51 +3,106 @@ import SwiftUI
 
 struct IntegrationSettingsPane: View {
     @EnvironmentObject private var controller: DownloadController
+    @EnvironmentObject private var settings: AppSettings
+    @State private var showToast = false
 
     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(spacing: 20) {
+            // Header
+            HStack(alignment: .center, spacing: 16) {
+                Image(systemName: "puzzlepiece.extension.fill")
+                    .resizable()
+                    .aspectRatio(contentMode: .fit)
+                    .frame(width: 40, height: 40)
+                    .foregroundStyle(Color(nsColor: NSColor(red: 1.0, green: 0.44, blue: 0.22, alpha: 1.0)))
+                    .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") {
-                VStack(alignment: .leading, spacing: 16) {
-                    Text("Firelink Companion is officially available on the Mozilla Add-on store. Install it to easily intercept downloads and send media directly to Firelink.")
+                VStack(alignment: .leading, spacing: 4) {
+                    Text("Connect Browser Extension")
+                        .font(.title2.weight(.bold))
+                    Text("Capture downloads directly from your browser in three easy steps.")
                         .foregroundStyle(.secondary)
-
-                    Button {
-                        if let url = URL(string: "https://addons.mozilla.org/en-US/firefox/addon/firelink-companion/") {
-                            NSWorkspace.shared.open(url)
-                        }
-                    } label: {
-                        Label("Install on Firefox", systemImage: "arrow.down.app")
-                            .font(.headline)
-                            .padding(.horizontal, 12)
-                            .padding(.vertical, 4)
-                    }
-                    .buttonStyle(.borderedProminent)
-                    .tint(Color(nsColor: NSColor(red: 1.0, green: 0.44, blue: 0.22, alpha: 1.0))) // Firefox Orange
-                    .controlSize(.large)
+                        .font(.subheadline)
                 }
-                .padding(.vertical, 8)
+                Spacer()
             }
 
-            Section("Diagnostics") {
-                LabeledContent("Local receiver") {
+            KeychainAccessCard()
+
+            if settings.isKeychainAccessGranted {
+                HStack(spacing: 12) {
+                    // Step 1
+                    CompactStepCardView(
+                        stepNumber: 1,
+                        title: "Copy Token",
+                        description: "This secure token authorizes your browser extension.",
+                        icon: "doc.on.clipboard.fill",
+                        iconColor: .blue,
+                        actionText: "Copy Token",
+                        action: {
+                            NSPasteboard.general.clearContents()
+                            NSPasteboard.general.setString(settings.extensionPairingToken, forType: .string)
+                            withAnimation {
+                                showToast = true
+                            }
+                        },
+                        secondaryActionText: "Regenerate",
+                        secondaryAction: {
+                            var bytes = [UInt8](repeating: 0, count: 32)
+                            let status = SecRandomCopyBytes(kSecRandomDefault, bytes.count, &bytes)
+                            settings.extensionPairingToken = status == errSecSuccess ? Data(bytes).base64EncodedString() : UUID().uuidString
+                        }
+                    )
+
+                    Image(systemName: "chevron.right")
+                        .font(.title3.weight(.bold))
+                        .foregroundStyle(Color(nsColor: .tertiaryLabelColor))
+
+                    // Step 2
+                    CompactStepCardView(
+                        stepNumber: 2,
+                        title: "Get Extension",
+                        description: "Install the Firelink Companion extension on your browser.",
+                        icon: "globe",
+                        iconColor: .orange,
+                        actionText: "Firefox Add-ons",
+                        action: {
+                            if let url = URL(string: "https://addons.mozilla.org/en-US/firefox/addon/firelink-companion/") {
+                                NSWorkspace.shared.open(url)
+                            }
+                        },
+                        secondaryActionText: "Releases",
+                        secondaryAction: {
+                            if let url = URL(string: "https://github.com/nimbold/Firelink-Extension/releases") {
+                                NSWorkspace.shared.open(url)
+                            }
+                        }
+                    )
+
+                    Image(systemName: "chevron.right")
+                        .font(.title3.weight(.bold))
+                        .foregroundStyle(Color(nsColor: .tertiaryLabelColor))
+
+                    // Step 3
+                    CompactStepCardView(
+                        stepNumber: 3,
+                        title: "Paste & Connect",
+                        description: "Click the Firelink icon in your browser's toolbar and paste the token.",
+                        icon: "arrow.down.doc.fill",
+                        iconColor: .green,
+                        actionText: nil,
+                        action: nil
+                    )
+                }
+                .fixedSize(horizontal: false, vertical: true)
+                
+                Divider()
+                
+                // Diagnostics
+                HStack {
+                    Text("Diagnostics:")
+                        .foregroundStyle(.secondary)
+                    Spacer()
                     if let port = controller.extensionServerPort {
                         Label("Listening on 127.0.0.1:\(port)", systemImage: "checkmark.seal.fill")
                             .foregroundStyle(.green)
@@ -56,14 +111,111 @@ struct IntegrationSettingsPane: View {
                             .foregroundStyle(.orange)
                     }
                 }
+                .font(.footnote)
             }
-
-            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)
-            }
+            Spacer()
         }
-        .formStyle(.grouped)
+        .padding(24)
+        .toast(isShowing: $showToast, message: "Token copied to clipboard!")
+        .background(Color(NSColor.windowBackgroundColor))
+    }
+}
+
+struct CompactStepCardView: View {
+    let stepNumber: Int
+    let title: String
+    let description: String
+    let icon: String
+    let iconColor: Color
+    let actionText: String?
+    let action: (() -> Void)?
+    var secondaryActionText: String? = nil
+    var secondaryAction: (() -> Void)? = nil
+
+    var body: some View {
+        VStack(spacing: 12) {
+            HStack(alignment: .top) {
+                // Step Number Badge
+                ZStack {
+                    Circle()
+                        .fill(Color(nsColor: .controlBackgroundColor))
+                        .frame(width: 24, height: 24)
+                        .shadow(color: .black.opacity(0.1), radius: 1, y: 1)
+                    
+                    Text("\(stepNumber)")
+                        .font(.system(.caption, design: .rounded).weight(.bold))
+                        .foregroundStyle(.primary)
+                }
+                Spacer()
+                // Icon
+                ZStack {
+                    RoundedRectangle(cornerRadius: 8)
+                        .fill(iconColor.opacity(0.15))
+                        .frame(width: 32, height: 32)
+                    
+                    Image(systemName: icon)
+                        .font(.system(size: 16))
+                        .foregroundStyle(iconColor)
+                }
+            }
+            
+            // Text Content
+            VStack(alignment: .leading, spacing: 4) {
+                Text(title)
+                    .font(.subheadline.weight(.semibold))
+                    .frame(maxWidth: .infinity, alignment: .leading)
+                Text(description)
+                    .font(.caption)
+                    .foregroundStyle(.secondary)
+                    .frame(maxWidth: .infinity, alignment: .leading)
+                    .fixedSize(horizontal: false, vertical: true)
+            }
+            
+            Spacer(minLength: 8)
+            
+            // Action Button
+            VStack(spacing: 8) {
+                if let actionText = actionText, let action = action {
+                    Button(action: action) {
+                        Text(actionText)
+                            .font(.caption.weight(.medium))
+                            .frame(maxWidth: .infinity)
+                            .padding(.vertical, 6)
+                            .background(Color.accentColor)
+                            .foregroundColor(.white)
+                            .cornerRadius(6)
+                    }
+                    .buttonStyle(.plain)
+                }
+                
+                if let secondaryActionText = secondaryActionText, let secondaryAction = secondaryAction {
+                    Button(action: secondaryAction) {
+                        Text(secondaryActionText)
+                            .font(.caption.weight(.medium))
+                            .frame(maxWidth: .infinity)
+                            .padding(.vertical, 6)
+                            .background(Color(nsColor: .controlBackgroundColor))
+                            .foregroundColor(.primary)
+                            .cornerRadius(6)
+                            .overlay(
+                                RoundedRectangle(cornerRadius: 6)
+                                    .strokeBorder(Color(nsColor: .separatorColor).opacity(0.5), lineWidth: 1)
+                            )
+                    }
+                    .buttonStyle(.plain)
+                }
+            }
+        }
+        .padding(12)
+        .frame(maxWidth: .infinity, maxHeight: .infinity)
+        .background(
+            RoundedRectangle(cornerRadius: 12)
+                .fill(Color(nsColor: .controlBackgroundColor))
+                .shadow(color: .black.opacity(0.05), radius: 4, y: 1)
+        )
+        .overlay(
+            RoundedRectangle(cornerRadius: 12)
+                .strokeBorder(Color(nsColor: .separatorColor).opacity(0.5), lineWidth: 1)
+        )
     }
 }

Sources/Firelink/Settings/KeychainAccessCard.swift

@@ -0,0 +1,65 @@
+import SwiftUI
+
+struct KeychainAccessCard: View {
+    @EnvironmentObject private var settings: AppSettings
+    
+    var body: some View {
+        HStack(spacing: 16) {
+            ZStack {
+                RoundedRectangle(cornerRadius: 10)
+                    .fill(settings.isKeychainAccessGranted ? Color.green.opacity(0.15) : Color.blue.opacity(0.15))
+                    .frame(width: 36, height: 36)
+                
+                Image(systemName: settings.isKeychainAccessGranted ? "lock.open.fill" : "lock.fill")
+                    .font(.system(size: 18))
+                    .foregroundStyle(settings.isKeychainAccessGranted ? .green : .blue)
+            }
+            
+            VStack(alignment: .leading, spacing: 2) {
+                Text("Keychain Access")
+                    .font(.headline)
+                Text("Firelink needs Keychain access to securely store your browser extension pairing token.")
+                    .font(.caption)
+                    .foregroundStyle(.secondary)
+                    .fixedSize(horizontal: false, vertical: true)
+            }
+            
+            Spacer(minLength: 16)
+            
+            if settings.isKeychainAccessGranted {
+                Label("Granted", systemImage: "checkmark.circle.fill")
+                    .foregroundStyle(.green)
+                    .font(.subheadline.weight(.medium))
+                
+                Button(role: .destructive) {
+                    settings.revokeKeychainAccess()
+                } label: {
+                    Text("Revoke")
+                }
+            } else {
+                Button {
+                    settings.grantKeychainAccess()
+                } label: {
+                    Text("Grant Access")
+                        .font(.subheadline.weight(.medium))
+                        .padding(.horizontal, 12)
+                        .padding(.vertical, 6)
+                        .background(Color.accentColor)
+                        .foregroundColor(.white)
+                        .cornerRadius(6)
+                }
+                .buttonStyle(.plain)
+            }
+        }
+        .padding(12)
+        .background(
+            RoundedRectangle(cornerRadius: 12)
+                .fill(Color(nsColor: .controlBackgroundColor))
+                .shadow(color: .black.opacity(0.05), radius: 4, y: 1)
+        )
+        .overlay(
+            RoundedRectangle(cornerRadius: 12)
+                .strokeBorder(Color(nsColor: .separatorColor).opacity(0.5), lineWidth: 1)
+        )
+    }
+}

Sources/Firelink/Settings/SiteLoginsSettingsPane.swift

@@ -9,7 +9,14 @@ struct SiteLoginsSettingsPane: View {
 
     var body: some View {
         Form {
-            Section(editingLoginID == nil ? "Add Login" : "Edit Login") {
+            Section {
+                KeychainAccessCard()
+            }
+            .listRowBackground(Color.clear)
+            .listRowInsets(EdgeInsets())
+
+            if settings.isKeychainAccessGranted {
+                Section(editingLoginID == nil ? "Add Login" : "Edit Login") {
                 TextField("URL Pattern (e.g., *.github.com)", text: $urlPattern)
                 TextField("Username", text: $username)
                 SecureField(editingLoginID == nil ? "Password" : "Password (leave blank to keep current)", text: $password)
@@ -71,6 +78,7 @@ struct SiteLoginsSettingsPane: View {
                     }
                     .frame(minHeight: 180)
                 }
+                }
             }
         }
         .formStyle(.grouped)

Sources/Firelink/Settings/ToastNotification.swift

@@ -0,0 +1,44 @@
+import SwiftUI
+
+struct ToastNotification: ViewModifier {
+    var message: String
+    @Binding var isShowing: Bool
+
+    func body(content: Content) -> some View {
+        ZStack(alignment: .bottom) {
+            content
+            
+            if isShowing {
+                VStack {
+                    Spacer()
+                    Text(message)
+                        .font(.subheadline.weight(.medium))
+                        .foregroundColor(.white)
+                        .padding(.horizontal, 16)
+                        .padding(.vertical, 10)
+                        .background(
+                            Capsule()
+                                .fill(Color.black.opacity(0.8))
+                                .shadow(color: .black.opacity(0.2), radius: 8, x: 0, y: 4)
+                        )
+                        .transition(.move(edge: .bottom).combined(with: .opacity))
+                        .padding(.bottom, 24)
+                }
+                .zIndex(1)
+                .animation(.spring(response: 0.3, dampingFraction: 0.7), value: isShowing)
+                .task {
+                    try? await Task.sleep(nanoseconds: 2_000_000_000)
+                    withAnimation {
+                        isShowing = false
+                    }
+                }
+            }
+        }
+    }
+}
+
+extension View {
+    func toast(isShowing: Binding<Bool>, message: String) -> some View {
+        self.modifier(ToastNotification(message: message, isShowing: isShowing))
+    }
+}

appcast.xml

@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<rss version="2.0" xmlns:sparkle="http://www.andymatuschak.org/xml-namespaces/sparkle" xmlns:dc="http://purl.org/dc/elements/1.1/">
-  <channel>
-    <title>Firelink Updates</title>
-    <link>https://github.com/nimbold/Firelink</link>
-    <description>Most recent updates for Firelink</description>
-    <language>en</language>
-    <item>
-      <title>Version 0.5.7</title>
-      <sparkle:minimumSystemVersion>14.0</sparkle:minimumSystemVersion>
-      <sparkle:hardwareRequirements>arm64</sparkle:hardwareRequirements>
-      <sparkle:releaseNotesLink>https://github.com/nimbold/Firelink/releases/tag/v0.5.7</sparkle:releaseNotesLink>
-      <pubDate>Sat, 06 Jun 2026 11:36:06 +0000</pubDate>
-      <enclosure url="https://github.com/nimbold/Firelink/releases/download/v0.5.7/Firelink-0.5.7-mac-arm64.dmg"
-                 sparkle:version="22"
-                 sparkle:shortVersionString="0.5.7"
-                 length="8871979"
-                 type="application/octet-stream"
-                 sparkle:edSignature="Y4QEJqGw6IeXL5JmaRqt5U22Bmc8JD02+oLRIFoKgOJO4v6p6+AmBP9VoM3yp/MAzj+gJMWiI/Gf4aPx4x3dAg==" />
-    </item>
-  </channel>
-</rss>