test(startup): compare v1.3.1 source (#37)

- Issue #37: compare the pre-1.4.0 application source with the current packaged-app stability workflow.\n- Keep the current workflow and 5-second delayed-crash check so the Windows result is comparable.\n\nRefs #37.

.github/workflows/ci.yml

@@ -27,6 +27,7 @@ jobs:
 
   desktop:
     name: Desktop checks (${{ matrix.target }})
+    timeout-minutes: 30
     strategy:
       fail-fast: false
       matrix:
@@ -52,8 +53,28 @@ jobs:
       - name: Install Linux dependencies
         if: runner.os == 'Linux'
         run: |
-          sudo apt-get update
-          sudo apt-get install -y \
+          # The hosted Ubuntu image can expose an unreachable Azure mirror in
+          # its apt sources while the public Ubuntu archive is reachable.
+          # Normalize every apt source, including the image's mirror list,
+          # before refreshing indexes so a transient runner-local mirror does
+          # not consume the whole job timeout.
+          sudo find /etc/apt -type f \
+            -exec sed -i \
+              -e 's#http://azure\.archive\.ubuntu\.com#https://archive.ubuntu.com#g' \
+              -e 's#https://azure\.archive\.ubuntu\.com#https://archive.ubuntu.com#g' \
+              {} +
+          sudo env DEBIAN_FRONTEND=noninteractive timeout --foreground --signal=TERM --kill-after=30s 10m apt-get \
+            -o Acquire::Retries=3 \
+            -o Acquire::http::Timeout=30 \
+            -o Acquire::https::Timeout=30 \
+            -o DPkg::Lock::Timeout=60 \
+            update
+          sudo env DEBIAN_FRONTEND=noninteractive timeout --foreground --signal=TERM --kill-after=30s 10m apt-get \
+            -o Acquire::Retries=3 \
+            -o Acquire::http::Timeout=30 \
+            -o Acquire::https::Timeout=30 \
+            -o DPkg::Lock::Timeout=60 \
+            install -y --no-install-recommends \
             libwebkit2gtk-4.1-dev \
             libappindicator3-dev \
             librsvg2-dev \
@@ -65,12 +86,34 @@ jobs:
         if: runner.os != 'Windows'
         working-directory: src-tauri
         run: cargo test --all-targets --target ${{ matrix.target }}
-      - name: Test Rust backend
+      - name: Test Windows Torrent RPC integration
         if: runner.os == 'Windows'
         working-directory: src-tauri
-        run: |
-          cargo test --tests --target ${{ matrix.target }}
-          cargo test --lib --no-run --target ${{ matrix.target }}
+        run: cargo test --test torrent_rpc --target ${{ matrix.target }} -- --nocapture
+      - name: Compile Windows queue-manager integration
+        if: runner.os == 'Windows'
+        working-directory: src-tauri
+        run: cargo test --test queue_manager --no-run --target ${{ matrix.target }}
+      - name: Compile Windows Rust library tests
+        if: runner.os == 'Windows'
+        working-directory: src-tauri
+        run: cargo test --lib --no-run --target ${{ matrix.target }}
+      - name: Run Windows headless production contracts
+        if: runner.os == 'Windows'
+        working-directory: src-tauri
+        run: cargo test --test production_contract --target ${{ matrix.target }} -- --nocapture
+      - name: Verify Windows atomic Torrent storage
+        if: runner.os == 'Windows'
+        working-directory: src-tauri
+        run: cargo test --test atomic_file --target ${{ matrix.target }} -- --nocapture
+      - name: Verify Windows Torrent cache safety
+        if: runner.os == 'Windows'
+        working-directory: src-tauri
+        run: cargo test --test torrent_cache --target ${{ matrix.target }} -- --nocapture
+      - name: Verify Windows Torrent web-seed normalization
+        if: runner.os == 'Windows'
+        working-directory: src-tauri
+        run: cargo test --test torrent_web_seed --target ${{ matrix.target }} -- --nocapture
       - name: Provision locked engines
         if: runner.os != 'macOS'
         run: node scripts/provision-engines.js --target ${{ matrix.target }}
@@ -78,3 +121,9 @@ jobs:
         run: |
           node scripts/stage-engines.js --target ${{ matrix.target }}
           node scripts/verify-binaries.js --staged --target ${{ matrix.target }}
+      - name: Run Torrent process smoke
+        run: node scripts/smoke-torrent.js --binary src-tauri/engine-dist/${{ matrix.target }}/aria2c-${{ matrix.target }}${{ runner.os == 'Windows' && '.exe' || '' }} --failure-paths
+      - name: Run Aria2 resolver smoke
+        run: node scripts/smoke-aria2-resolver.js --binary src-tauri/engine-dist/${{ matrix.target }}/aria2c-${{ matrix.target }}${{ runner.os == 'Windows' && '.exe' || '' }}
+      - name: Run Aria2 normal-transfer smoke
+        run: node scripts/smoke-aria2-transfers.js --binary src-tauri/engine-dist/${{ matrix.target }}/aria2c-${{ matrix.target }}${{ runner.os == 'Windows' && '.exe' || '' }}

.github/workflows/release.yml

@@ -45,18 +45,45 @@ jobs:
         with:
           node-version: 22
           cache: npm
-      - name: Verify release version
+      - name: Verify tagged release version
+        if: github.event_name == 'push' || inputs.publish_release
         run: node scripts/verify-release-version.js
-      - name: Verify Companion release identity
+      - name: Verify non-publishing package version
+        if: github.event_name == 'workflow_dispatch' && !inputs.publish_release
+        run: node scripts/verify-release-version.js --allow-untagged
+      - name: Verify tagged Companion release identity
+        if: github.event_name == 'push' || inputs.publish_release
         run: node scripts/verify-companion-release.js
+      - name: Verify non-publishing Companion package metadata
+        if: github.event_name == 'workflow_dispatch' && !inputs.publish_release
+        run: node scripts/verify-companion-release.js --allow-untagged
       - uses: dtolnay/rust-toolchain@stable
         with:
           targets: ${{ matrix.target }}
       - name: Install Linux dependencies
         if: runner.os == 'Linux'
         run: |
-          sudo apt-get update
-          sudo apt-get install -y \
+          # Hosted Ubuntu images can expose an unreachable Azure mirror in
+          # their apt sources while the public Ubuntu archive is reachable.
+          # Keep release jobs bounded and use the same source normalization as
+          # the native CI path so a runner-local mirror cannot hang packaging.
+          sudo find /etc/apt -type f \
+            -exec sed -i \
+              -e 's#http://azure\.archive\.ubuntu\.com#https://archive.ubuntu.com#g' \
+              -e 's#https://azure\.archive\.ubuntu\.com#https://archive.ubuntu.com#g' \
+              {} +
+          sudo env DEBIAN_FRONTEND=noninteractive timeout --foreground --signal=TERM --kill-after=30s 10m apt-get \
+            -o Acquire::Retries=3 \
+            -o Acquire::http::Timeout=30 \
+            -o Acquire::https::Timeout=30 \
+            -o DPkg::Lock::Timeout=60 \
+            update
+          sudo env DEBIAN_FRONTEND=noninteractive timeout --foreground --signal=TERM --kill-after=30s 10m apt-get \
+            -o Acquire::Retries=3 \
+            -o Acquire::http::Timeout=30 \
+            -o Acquire::https::Timeout=30 \
+            -o DPkg::Lock::Timeout=60 \
+            install -y \
             libwebkit2gtk-4.1-dev \
             libappindicator3-dev \
             librsvg2-dev \
@@ -113,11 +140,25 @@ jobs:
       - name: Verify macOS packaged engines and launch
         if: runner.os == 'macOS'
         run: |
-          APP="src-tauri/target/${{ matrix.target }}/release/bundle/macos/Firelink.app"
+          set -euo pipefail
           DMG="$(find src-tauri/target/${{ matrix.target }}/release/bundle/dmg -name '*.dmg' -print -quit)"
           test -n "$DMG"
-          npm run verify:macos-signing -- --app "$APP" --dmg "$DMG"
+          npm run verify:macos-signing -- --dmg "$DMG"
+          MOUNT_POINT="$(mktemp -d "$RUNNER_TEMP/firelink-dmg-mount.XXXXXX")"
+          cleanup() {
+            hdiutil detach "$MOUNT_POINT" -quiet || hdiutil detach "$MOUNT_POINT" -force -quiet || true
+            rmdir "$MOUNT_POINT" 2>/dev/null || true
+          }
+          trap cleanup EXIT
+          hdiutil attach -nobrowse -readonly -mountpoint "$MOUNT_POINT" "$DMG" >/dev/null
+          APP_COUNT="$(find "$MOUNT_POINT" -maxdepth 1 -type d -name 'Firelink.app' | wc -l | tr -d ' ')"
+          test "$APP_COUNT" -eq 1
+          APP="$(find "$MOUNT_POINT" -maxdepth 1 -type d -name 'Firelink.app' -print -quit)"
+          FIRELINK_MACOS_APP="$APP" node scripts/app-associations.node-test.js
           node scripts/verify-binaries.js --search-root "$APP" --target ${{ matrix.target }}
+          ARIA2="$(find "$APP" -type f -name 'aria2c-${{ matrix.target }}' -print -quit)"
+          test -n "$ARIA2"
+          node scripts/smoke-aria2-transfers.js --binary "$ARIA2"
           node scripts/smoke-packaged-app.js --executable "$APP/Contents/MacOS/firelink"
       - name: Verify Windows installer payload and launch
         if: runner.os == 'Windows'
@@ -130,6 +171,12 @@ jobs:
           & 7z x $installer.FullName "-o$extractRoot" -y
           if ($LASTEXITCODE -ne 0) { throw "7z failed to extract the Windows installer payload (exit code $LASTEXITCODE)." }
           node scripts/verify-binaries.js --search-root "$extractRoot" --target ${{ matrix.target }}
+          $aria2 = Get-ChildItem $extractRoot -Recurse -File -ErrorAction SilentlyContinue |
+            Where-Object { $_.Name -ieq "aria2c-${{ matrix.target }}.exe" } |
+            Sort-Object FullName |
+            Select-Object -First 1
+          if (-not $aria2) { throw "Packaged Aria2 executable was not found in the installer payload." }
+          node scripts/smoke-aria2-transfers.js --binary $aria2.FullName
 
           $portableRoot = "$env:RUNNER_TEMP/firelink-portable-payload"
           $portableArtifactDir = "$env:RUNNER_TEMP/firelink-portable"
@@ -195,6 +242,9 @@ jobs:
           chmod +x "$APPIMAGE"
           (cd "$RUNNER_TEMP" && "$GITHUB_WORKSPACE/$APPIMAGE" --appimage-extract >/dev/null)
           node scripts/verify-binaries.js --search-root "$RUNNER_TEMP/squashfs-root" --target ${{ matrix.target }}
+          ARIA2="$(find "$RUNNER_TEMP/squashfs-root" -type f -name 'aria2c-${{ matrix.target }}' -print -quit)"
+          test -n "$ARIA2"
+          node scripts/smoke-aria2-transfers.js --binary "$ARIA2"
           xvfb-run -a node scripts/smoke-packaged-app.js --executable "$RUNNER_TEMP/squashfs-root/AppRun"
       - uses: actions/upload-artifact@v7
         with:

.gitignore

@@ -11,11 +11,15 @@ skills-lock.json
 # Local agent and planning notes
 AGENT.md
 AGENTS.md
+TORRENT_FEATURES.md
+torrent_features.md
+TORRENT_UI_IMPLEMENTATION_PLAN.md
 CLAUDE.md
 GEMINI.md
 implementation_plan.md
 CROSS_PLATFORM_CHECKLIST.md
 Cross-platform-checklist-gemini.MD
+ARIA2_AVERAGE_USER_AUDIT.md
 YouTube_media_download_handoff.md
 Release_checklist.md
 Release Checklist/
@@ -61,6 +65,7 @@ build/
 # Local secrets and signing material
 .env
 .env.*
+implementation_plan.md
 *.key
 *.pem
 !src-tauri/binaries/_internal/certifi/cacert.pem

CHANGELOG.md

@@ -5,6 +5,53 @@ All notable changes to Firelink 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).
 
+## [1.4.0] - 2026-08-27
+
+This release adds built-in Torrent downloads and a dedicated Properties window, while making regular downloads, browser handoffs, and cross-platform packages more dependable.
+
+### New features
+
+- **Torrent downloads**
+  - Add `.torrent` files and magnet links from the Add window, file associations, `magnet:` links, and Firelink Companion.
+  - Resolve remote metadata before enqueueing and safely reuse validated Torrent metadata.
+  - Select files, prioritize pieces, preallocate or allocate as needed, verify existing data, remove unselected files safely, and add per-file web seeds.
+  - Manage trackers and exclusions, tracker timing, DHT/IPv6/PEX/LPD discovery, encryption, peer limits, network identity, and resource limits.
+  - View file progress, piece availability, connected and listed peers, seeders, upload totals and speed, and the info hash.
+  - Set upload limits, seed time or ratio, stop timeout, concurrent seed slots, and move Torrent data to a new location.
+  - Use a dedicated Torrents category with pause, resume, retry, redownload, and safe cleanup.
+- **Download and Torrent Properties windows**
+  - Open a selected download in its own window with overview, transfer, and advanced controls.
+  - Use Torrent tabs for file selection, trackers, peers, options, and live diagnostics.
+  - Edit supported settings while a transfer is active, including speed, connections, Torrent upload and peer limits, seeding, verification, allocation, and encryption.
+  - Inspect allocation, exact progress, resume failures, destinations, and current diagnostics; copy long URLs or paths and export magnet links where available.
+  - Keep the window size during the app session while the window follows the current theme and locale.
+- **Adaptive mirror selection**
+  - Optionally use recent transfer performance to choose among multiple mirrors. Mirror statistics stay private on this device.
+- **Transfer and layout visibility**
+  - Show the file-allocation phase while a normal download prepares its destination.
+  - Remember the main-window size and position and the Folders collapse preference between launches.
+
+### Improvements
+
+- Improve normal-download recovery across restarts, stale transfers, redirects, mirrors, connection-pool slowdowns, retries, and resume operations without saved credentials.
+- Improve media recovery and resume messaging, preserve exact progress at the end of a transfer, and restore adaptive YouTube formats. This responds to the interrupted-YouTube-download report in [#36](https://github.com/nimbold/Firelink/issues/36).
+- Make browser and deep-link inputs arrive in order, keep magnet clipboard handoffs usable, and make Add-window destination and metadata validation clearer.
+- Improve the download table, sidebar, Add window, Settings, RTL keyboard navigation, and accessibility behavior at narrow window sizes.
+- Add clear guidance for the macOS first-launch security warning and safe approval steps, responding to [#34](https://github.com/nimbold/Firelink/issues/34).
+- Refresh bundled engines and dependencies, resume interrupted engine downloads safely, and strengthen package, release, and cross-platform verification.
+
+### Fixes
+
+- Retry affected transfers through the system resolver when a VPN or network tunnel leaves aria2 unable to resolve a host, addressing [#35](https://github.com/nimbold/Firelink/issues/35).
+- Prevent late or duplicate lifecycle events from reviving, removing, or misreporting a download after a newer action has already won.
+- Keep replacement, removal, and pre-admission cleanup from leaving stale queue entries, partial files, or misleading progress behind.
+- Keep completed, paused, failed, and retrying downloads authoritative while allocation and progress updates arrive asynchronously.
+- Make scheduled actions, speed limits, logs, persisted settings, and browser credentials safer when several changes happen close together.
+
+### Compatibility
+
+- Use [Firelink Companion `2.2.0`](https://github.com/nimbold/Firelink-Extension/releases/tag/v2.2.0), or the [latest Companion release](https://github.com/nimbold/Firelink-Extension/releases/latest), with Firelink `1.4.0`.
+
 ## [1.3.1] - 2026-07-30
 
 This hotfix improves filename handling, localized display details, and release reliability across platforms.

README.md

@@ -28,9 +28,9 @@ It uses a Rust and Tauri backend with a React and TypeScript interface. Required
 
 ## Status
 
-Firelink `1.3.1` is the latest desktop release.
+Firelink `1.4.0` is the latest desktop release.
 
-It is paired with [the latest Firelink Companion release, `2.1.0`](https://github.com/nimbold/Firelink-Extension/releases/tag/v2.1.0). The Companion did not change for this hotfix.
+Use [the latest Firelink Companion release, `2.2.0`](https://github.com/nimbold/Firelink-Extension/releases/tag/v2.2.0) with Firelink. The Companion is maintained in the [Firelink-Extension repository](https://github.com/nimbold/Firelink-Extension).
 
 The project is actively maintained. See the [changelog](CHANGELOG.md) for release history and current work.
 
@@ -40,8 +40,12 @@ Translations are available for English, Simplified Chinese, Hebrew, Persian, Ukr
 
 - Segmented HTTP and HTTPS downloads with retries, speed limits, and connection controls.
 - Media and playlist downloads through yt-dlp, FFmpeg, and Deno.
+- BitTorrent downloads from `.torrent` files, magnet links, and browser handoff, with file selection, web seeds, seeding, and live diagnostics.
+- Standalone Download and Torrent Properties windows with live controls, transfer details, and safe Torrent relocation.
+- Adaptive mirror selection for multi-source downloads.
 - An Add window for metadata, duplicate handling, save locations, and download options.
 - Persistent queues with pause, resume, retry, redownload, and scheduling.
+- Visible allocation and resume status with clearer transfer diagnostics.
 - Live speed and connection controls for active downloads.
 - A customizable download table with sorting, column selection, reordering, and bulk actions.
 - File organization with categories, default folders, and per-download locations.
@@ -63,6 +67,25 @@ Download the [latest Firelink release](https://github.com/nimbold/Firelink/relea
 
 All packages include aria2, yt-dlp, FFmpeg, Deno, and SQLite support. No separate engine installation is required.
 
+<details>
+<summary><strong>macOS security warning and first launch</strong></summary>
+
+Firelink's macOS release is ad-hoc signed but not notarized by Apple. A paid Apple Developer Program account is required for Apple's Developer ID signing and notarization, so macOS may warn that it cannot verify Firelink or check that it is free of malware. This warning does not by itself mean that the app contains malware.
+
+Only use these steps for Firelink downloaded from the [official GitHub release page](https://github.com/nimbold/Firelink/releases/latest). After moving `Firelink.app` to Applications, use one of these methods to approve the first launch:
+
+1. In Finder, Control-click or right-click `Firelink.app`, choose **Open**, then choose **Open** again.
+2. Try opening Firelink once, then open **System Settings -> Privacy & Security**, scroll down, and choose **Open Anyway** for Firelink.
+3. In Terminal, remove only the downloaded-file quarantine flag:
+
+   ```bash
+   xattr -dr com.apple.quarantine /Applications/Firelink.app
+   ```
+
+   If Firelink is stored somewhere else, replace the path with the actual path to `Firelink.app`. The approval is normally needed only once.
+
+</details>
+
 <details>
 <summary><strong>Windows portable ZIP notes</strong></summary>
 
@@ -76,7 +99,7 @@ All packages include aria2, yt-dlp, FFmpeg, Deno, and SQLite support. No separat
 
 ## Browser integration
 
-[Firelink Companion `2.1.0`](https://github.com/nimbold/Firelink-Extension/releases/tag/v2.1.0) connects browser downloads, links, and media pages to Firelink. Use the latest Companion release with the latest Firelink release; no extension update is needed for Firelink `1.3.1`.
+[Firelink Companion `2.2.0`](https://github.com/nimbold/Firelink-Extension/releases/tag/v2.2.0) connects browser downloads, links, media pages, magnets, and Torrent metadata to Firelink. Use the [latest Companion release](https://github.com/nimbold/Firelink-Extension/releases/latest) with the [latest Firelink release](https://github.com/nimbold/Firelink/releases/latest).
 
 Captured links open Firelink's Add window for review before they are started or queued.
 

RELEASE.md

@@ -50,10 +50,24 @@ cd ..
 npm run tauri build -- --target aarch64-apple-darwin --bundles dmg
 ```
 
-Verify packaged resources, then launch outside repository working directory:
+Verify the DMG and the app it contains, then launch outside the repository
+working directory. The DMG bundler removes the intermediate app directory, so
+the post-build checks must use the mounted release artifact:
 
 ```bash
-APP="src-tauri/target/aarch64-apple-darwin/release/bundle/macos/Firelink.app"
+DMG="$(find src-tauri/target/aarch64-apple-darwin/release/bundle/dmg -name '*.dmg' -print -quit)"
+test -n "$DMG"
+npm run verify:macos-signing -- --dmg "$DMG"
+MOUNT_POINT="$(mktemp -d -t firelink-dmg)"
+cleanup() {
+  hdiutil detach "$MOUNT_POINT" -quiet || hdiutil detach "$MOUNT_POINT" -force -quiet || true
+  rmdir "$MOUNT_POINT" 2>/dev/null || true
+}
+trap cleanup EXIT
+hdiutil attach -nobrowse -readonly -mountpoint "$MOUNT_POINT" "$DMG" >/dev/null
+APP_COUNT="$(find "$MOUNT_POINT" -maxdepth 1 -type d -name 'Firelink.app' | wc -l | tr -d ' ')"
+test "$APP_COUNT" -eq 1
+APP="$(find "$MOUNT_POINT" -maxdepth 1 -type d -name 'Firelink.app' -print -quit)"
 node scripts/verify-binaries.js --search-root "$APP" --target aarch64-apple-darwin
 node scripts/smoke-packaged-app.js --executable "$APP/Contents/MacOS/firelink"
 ```

engine-sources.lock.json

@@ -3,19 +3,19 @@
   "targets": {
     "x86_64-pc-windows-msvc": {
       "yt-dlp": {
-        "version": "2026.07.04",
-        "url": "https://github.com/yt-dlp/yt-dlp/releases/download/2026.07.04/yt-dlp_win.zip",
-        "sha256": "90254845be5282b1f4d843a873abff04f569f857f64250f833fe152b21eec152"
+        "version": "2026.08.19",
+        "url": "https://github.com/yt-dlp/yt-dlp/releases/download/2026.08.19/yt-dlp_win.zip",
+        "sha256": "30b4c14aafab6082becff7881e41b76df46dc43ea7633479410a91e29da492bf"
       },
       "deno": {
-        "version": "2.9.4",
-        "url": "https://github.com/denoland/deno/releases/download/v2.9.4/deno-x86_64-pc-windows-msvc.zip",
-        "sha256": "68ed08b05c56cf887e9aa509947dc3f468f7e12f47a13e5c1abd51d46d1453ef"
+        "version": "2.9.5",
+        "url": "https://github.com/denoland/deno/releases/download/v2.9.5/deno-x86_64-pc-windows-msvc.zip",
+        "sha256": "171efab55ac6b9881fd53ee4c20f8bf3bb1340ffc618483746909014db12216a"
       },
       "ffmpeg": {
-        "version": "8.1.2-31-g8c9502e9b0",
-        "url": "https://github.com/BtbN/FFmpeg-Builds/releases/download/autobuild-2026-07-28-13-32/ffmpeg-n8.1.2-31-g8c9502e9b0-win64-gpl-8.1.zip",
-        "sha256": "e88033629ebecd56d01e6b5b2e693f07d3ec3ed0d14188fc18d7d0bc9c3e6709"
+        "version": "8.1.2-46-g139afe709a",
+        "url": "https://github.com/BtbN/FFmpeg-Builds/releases/download/autobuild-2026-08-26-13-06/ffmpeg-n8.1.2-46-g139afe709a-win64-gpl-8.1.zip",
+        "sha256": "f966bc2e843bcd680dedd6d1a2c0c895bab859a402c6dd107cbe72a796dfebcf"
       },
       "aria2c": {
         "version": "1.37.0",
@@ -25,19 +25,19 @@
     },
     "x86_64-unknown-linux-gnu": {
       "yt-dlp": {
-        "version": "2026.07.04",
-        "url": "https://github.com/yt-dlp/yt-dlp/releases/download/2026.07.04/yt-dlp_linux.zip",
-        "sha256": "d7d2d09e900b5ae11821b5784b18cf064984a2bd88b1ca5c798d744bcbe3658b"
+        "version": "2026.08.19",
+        "url": "https://github.com/yt-dlp/yt-dlp/releases/download/2026.08.19/yt-dlp_linux.zip",
+        "sha256": "32e72032766bef9199d99d15beb69fd52e46df8f8b06f0d8745db59e04d339e9"
       },
       "deno": {
-        "version": "2.9.4",
-        "url": "https://github.com/denoland/deno/releases/download/v2.9.4/deno-x86_64-unknown-linux-gnu.zip",
-        "sha256": "c24f955d9fbfe0ea5ae2b501c8e71ae76e31e4c9782390a54a284b3364fda725"
+        "version": "2.9.5",
+        "url": "https://github.com/denoland/deno/releases/download/v2.9.5/deno-x86_64-unknown-linux-gnu.zip",
+        "sha256": "8b010a3b1a4a0188a67cdb8a7a27348b2a501af78aec7fc74f2ace167368d530"
       },
       "ffmpeg": {
-        "version": "8.1.2-31-g8c9502e9b0",
-        "url": "https://github.com/BtbN/FFmpeg-Builds/releases/download/autobuild-2026-07-28-13-32/ffmpeg-n8.1.2-31-g8c9502e9b0-linux64-gpl-8.1.tar.xz",
-        "sha256": "8f61aa8abfc2174bbb60fe0bcf7a23c7940a96d4e34c6694bf0ca48b23ce67f0"
+        "version": "8.1.2-46-g139afe709a",
+        "url": "https://github.com/BtbN/FFmpeg-Builds/releases/download/autobuild-2026-08-26-13-06/ffmpeg-n8.1.2-46-g139afe709a-linux64-gpl-8.1.tar.xz",
+        "sha256": "0814f4491c2673ea505be8fb65a76c2bfabaa5aad8f33d49b1c5b87a2262e8c5"
       },
       "aria2c": {
         "version": "1.37.0",

engines.lock.json

@@ -4,10 +4,10 @@
     "aarch64-apple-darwin": {
       "engines": {
         "yt-dlp": {
-          "version": "2026.07.04",
+          "version": "2026.08.19",
           "source": "https://github.com/yt-dlp/yt-dlp",
           "build": "PyInstaller onedir distribution with embedded Python and yt_dlp_ejs",
-          "sha256": "ff7d4fc44b8fbf42da021c1bca950da0326cdb0cdb84992fdc7fb7ec215df435"
+          "sha256": "4f54eb67e4e96c7c3ffa49dd5deb81bc348bbb495080889b47d157d5c6d74443"
         },
         "aria2c": {
           "version": "1.37.0",
@@ -16,23 +16,23 @@
           "sha256": "111b2f5ed760f1e1a2ec06117c4e8094fcde336ba16122dda1c5e7209bf1862d"
         },
         "ffmpeg": {
-          "version": "N-125840-gf6fa0d3fda",
+          "version": "N-125892-g406c5a37aa",
           "source": "https://ffmpeg.org/",
           "build": "GPLv3 build identified by binary as https://www.martin-riedl.de",
-          "url": "https://ffmpeg.martin-riedl.de/download/macos/arm64/1785265034_N-125840-gf6fa0d3fda/ffmpeg.zip",
-          "sha256": "e4fa88b19f85afa620dccc35f2bec5b41746e1bb13f1c7e6fe4c7db88391027d"
+          "url": "https://ffmpeg.martin-riedl.de/download/macos/arm64/1785661721_N-125892-g406c5a37aa/ffmpeg.zip",
+          "sha256": "734e6b72a0c2d0d5e089b5a0094be74fa058c15158f6b0689207a01fedafd8f5"
         },
         "deno": {
-          "version": "2.9.4",
+          "version": "2.9.5",
           "source": "https://github.com/denoland/deno",
           "build": "official aarch64-apple-darwin executable",
-          "sha256": "433088c827fa0e39ff162ab0e475f1fd4c7690eaedec500cf678edc3865e9287"
+          "sha256": "b5bd08edab254d42d7b05aa5b6cb4c9b8d4dede4975aff76951ce2cce18866fa"
         }
       },
       "runtimeTrees": {
         "_internal": {
-          "files": 142,
-          "sha256": "769507d9b8d97164ef81ebb449873072697bf82acac8c7d61c7bfd96c551e210"
+          "files": 133,
+          "sha256": "24ac8c7557dbef0ef9e5685365b4620bc441a168daf314b71218276b782dc449"
         },
         "aria2-libs": {
           "files": 7,

package.json

@@ -1,7 +1,7 @@
 {
   "name": "firelink",
   "private": true,
-  "version": "1.3.1",
+  "version": "1.4.0",
   "description": "A fast cross-platform desktop download manager powered by Rust, Tauri, React, aria2, and yt-dlp.",
   "license": "MIT",
   "homepage": "https://github.com/nimbold/Firelink",
@@ -33,6 +33,11 @@
     "build": "tsc && vite build",
     "check:i18n": "vitest run src/i18n/resources.test.ts",
     "check:updates": "node scripts/check-updates.js",
+    "smoke:torrent": "node scripts/smoke-torrent.js",
+    "smoke:torrent:failure-paths": "node scripts/smoke-torrent.js --failure-paths",
+    "smoke:aria2:resolver": "node scripts/smoke-aria2-resolver.js",
+    "smoke:aria2:transfers": "node scripts/smoke-aria2-transfers.js",
+    "test:torrent:rpc": "cd src-tauri && cargo test --test torrent_rpc -- --nocapture",
     "verify:macos-signing": "node scripts/verify-macos-signing.js",
     "preview": "vite preview",
     "tauri": "tauri",
@@ -54,23 +59,23 @@
     "@tauri-apps/plugin-log": "^2.9.0",
     "@tauri-apps/plugin-notification": "^2.3.3",
     "@tauri-apps/plugin-opener": "^2",
-    "i18next": "^26.3.6",
-    "lucide-react": "^1.27.0",
+    "i18next": "^26.4.0",
+    "lucide-react": "^1.34.0",
     "react": "^19.2.8",
     "react-dom": "^19.2.8",
-    "react-i18next": "^17.0.11",
-    "zustand": "^5.0.14"
+    "react-i18next": "^17.0.12",
+    "zustand": "^5.0.15"
   },
   "devDependencies": {
     "@tauri-apps/cli": "^2.11.4",
-    "@types/react": "^19.2.17",
-    "@types/react-dom": "^19.2.3",
-    "@vitejs/plugin-react": "^6.0.4",
+    "@types/react": "^19.2.18",
+    "@types/react-dom": "^19.2.5",
+    "@vitejs/plugin-react": "^6.1.0",
     "autoprefixer": "^10.5.4",
-    "postcss": "^8.5.24",
+    "postcss": "^8.5.26",
     "tailwindcss": "^4.3.3",
     "typescript": "^7.0.2",
-    "vite": "^8.1.5",
-    "vitest": "^4.1.10"
+    "vite": "^8.2.2",
+    "vitest": "^4.1.11"
   }
 }

scripts/app-associations.node-test.js

@@ -0,0 +1,70 @@
+import assert from 'node:assert/strict';
+import { execFileSync } from 'node:child_process';
+import fs from 'node:fs';
+import path from 'node:path';
+import test from 'node:test';
+
+const repositoryRoot = path.resolve(import.meta.dirname, '..');
+const tauriConfig = JSON.parse(
+  fs.readFileSync(path.join(repositoryRoot, 'src-tauri', 'tauri.conf.json'), 'utf8')
+);
+
+const torrentAssociation = tauriConfig.bundle.fileAssociations.find(association =>
+  association.ext?.some(extension => extension.toLowerCase() === 'torrent')
+);
+
+test('declares the native macOS BitTorrent content type', () => {
+  assert.ok(torrentAssociation, 'the bundle must declare a .torrent association');
+  assert.equal(torrentAssociation.mimeType, 'application/x-bittorrent');
+  assert.deepEqual(torrentAssociation.exportedType, {
+    identifier: 'org.bittorrent.torrent',
+    conformsTo: ['public.data', 'public.item']
+  });
+  assert.equal(
+    torrentAssociation.contentTypes,
+    undefined,
+    'the UTI declaration supplies the extension and MIME tags for clean installs'
+  );
+});
+
+test('declares magnet as a desktop deep-link scheme', () => {
+  assert.deepEqual(tauriConfig.plugins['deep-link'].desktop.schemes, ['firelink', 'magnet']);
+});
+
+const packagedAppPath = process.env.FIRELINK_MACOS_APP;
+
+if (packagedAppPath) {
+  test('packaged macOS app exports the Torrent UTI and magnet URL scheme', () => {
+    assert.equal(process.platform, 'darwin', 'packaged macOS association checks require macOS');
+    const infoPlistPath = path.join(packagedAppPath, 'Contents', 'Info.plist');
+    assert.ok(fs.existsSync(infoPlistPath), `missing packaged Info.plist: ${infoPlistPath}`);
+
+    const plist = JSON.parse(execFileSync('plutil', ['-convert', 'json', '-o', '-', infoPlistPath], {
+      encoding: 'utf8'
+    }));
+    const urlTypes = Array.isArray(plist.CFBundleURLTypes) ? plist.CFBundleURLTypes : [];
+    const schemes = urlTypes.flatMap(entry => (
+      entry && typeof entry === 'object' && Array.isArray(entry.CFBundleURLSchemes)
+        ? entry.CFBundleURLSchemes.filter(scheme => typeof scheme === 'string')
+        : []
+    ));
+    assert.ok(schemes.includes('firelink'), 'packaged app must retain the Firelink deep-link scheme');
+    assert.ok(schemes.includes('magnet'), 'packaged app must export the magnet URL scheme');
+
+    const documentTypes = Array.isArray(plist.CFBundleDocumentTypes) ? plist.CFBundleDocumentTypes : [];
+    const torrentDocument = documentTypes.find(entry =>
+      entry
+      && typeof entry === 'object'
+      && Array.isArray(entry.CFBundleTypeExtensions)
+      && entry.CFBundleTypeExtensions.some(extension =>
+        typeof extension === 'string' && extension.toLowerCase() === 'torrent'
+      )
+    );
+    assert.ok(torrentDocument, 'packaged app must claim the .torrent extension');
+    assert.ok(
+      Array.isArray(torrentDocument.LSItemContentTypes)
+      && torrentDocument.LSItemContentTypes.includes('org.bittorrent.torrent'),
+      'packaged app must claim the standard BitTorrent UTI'
+    );
+  });
+}

scripts/audit-aria2-options.js

@@ -0,0 +1,46 @@
+#!/usr/bin/env node
+
+import fs from 'node:fs';
+
+const sourceArgument = process.argv.indexOf('--source');
+const sourceLocation = sourceArgument >= 0
+  ? process.argv[sourceArgument + 1]
+  : 'https://raw.githubusercontent.com/aria2/aria2/release-1.37.0/doc/manual-src/en/aria2c.rst';
+
+if (!sourceLocation) throw new Error('--source requires a path or URL');
+
+const source = /^https:\/\//.test(sourceLocation)
+  ? await fetch(sourceLocation, { signal: AbortSignal.timeout(15000) }).then(response => {
+      if (!response.ok) throw new Error(`Aria2 manual fetch failed with HTTP ${response.status}`);
+      return response.text();
+    })
+  : fs.readFileSync(sourceLocation, 'utf8');
+
+function section(start, end) {
+  const startIndex = source.indexOf(`${start}\n`);
+  const endIndex = source.indexOf(`${end}\n`, startIndex + start.length);
+  if (startIndex < 0 || endIndex < 0) throw new Error(`Could not find manual section ${start} -> ${end}`);
+  return source.slice(startIndex, endIndex);
+}
+
+function options(text) {
+  const names = [...text.matchAll(/^\.\. option:: .*?(--[a-z0-9-]+)/gm)]
+    .map(match => match[1].slice(2));
+  return [...new Set(names)].sort();
+}
+
+const normal = options(section('HTTP/FTP/SFTP Options', 'BitTorrent/Metalink Options'));
+const torrent = options(
+  `${section('BitTorrent/Metalink Options', 'BitTorrent Specific Options')}\n${section('BitTorrent Specific Options', 'Metalink Specific Options')}`,
+);
+
+if (torrent.length !== 46) {
+  throw new Error(`Expected 46 unique Aria2 1.37.0 Torrent options, found ${torrent.length}`);
+}
+
+console.log(JSON.stringify({
+  source: sourceLocation,
+  aria2Version: '1.37.0',
+  normal: { count: normal.length, options: normal },
+  torrent: { count: torrent.length, options: torrent },
+}, null, 2));

scripts/check-updates.js

@@ -7,6 +7,14 @@ import { fileURLToPath } from 'node:url';
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
 const repoRoot = path.resolve(__dirname, '..');
 const userAgent = 'firelink-update-check';
+const fetchRetryDelaysMs = [250, 1_000];
+const fetchTimeoutMs = 30_000;
+const retryableHttpStatuses = new Set([408, 425, 429, 500, 502, 503, 504]);
+
+function httpResponseError(response, url) {
+  const status = [response.status, response.statusText].filter(Boolean).join(' ');
+  return new Error(`${status}: ${url}`);
+}
 
 function parseJsonFile(file) {
   return JSON.parse(fs.readFileSync(path.join(repoRoot, file), 'utf8'));
@@ -32,12 +40,46 @@ function compareVersions(left, right) {
   return 0;
 }
 
+function parseSha256Digest(value) {
+  const match = /^sha256:([0-9a-f]{64})$/i.exec(String(value || ''));
+  return match?.[1].toLowerCase();
+}
+
+function releaseAssetHashes(release) {
+  return Object.fromEntries(
+    (release?.assets || [])
+      .map(asset => {
+        const digest = parseSha256Digest(asset.digest);
+        return digest && typeof asset.browser_download_url === 'string'
+          ? [asset.browser_download_url, digest]
+          : undefined;
+      })
+      .filter(Boolean),
+  );
+}
+
+function providerAssetHashes({ ytDlp, deno, aria2 }) {
+  return {
+    ...releaseAssetHashes(ytDlp),
+    ...releaseAssetHashes(deno),
+    ...releaseAssetHashes(aria2),
+  };
+}
+
+function npmExecutable(platform = process.platform) {
+  return platform === 'win32' ? 'npm.cmd' : 'npm';
+}
+
 function npmOutdated(cwd) {
   if (!fs.existsSync(path.join(cwd, 'package.json'))) {
     throw new Error(`npm workspace is missing package.json: ${cwd}`);
   }
   try {
-    execFileSync('npm', ['outdated', '--json'], { cwd, encoding: 'utf8', stdio: ['ignore', 'pipe', 'pipe'] });
+    execFileSync(npmExecutable(), ['outdated', '--json'], {
+      cwd,
+      encoding: 'utf8',
+      stdio: ['ignore', 'pipe', 'pipe'],
+    });
     return {};
   } catch (error) {
     if (error.status !== 1) {
@@ -50,25 +92,67 @@ function npmOutdated(cwd) {
 }
 
 async function fetchJson(url) {
-  const response = await fetch(url, { headers: { 'User-Agent': userAgent } });
-  if (!response.ok) throw new Error(`${response.status} ${response.statusText}: ${url}`);
-  return response.json();
+  return fetchWithContext(url, response => response.json());
 }
 
 async function fetchText(url) {
-  const response = await fetch(url, { headers: { 'User-Agent': userAgent } });
-  if (!response.ok) throw new Error(`${response.status} ${response.statusText}: ${url}`);
-  return response.text();
+  return fetchWithContext(url, response => response.text());
+}
+
+async function fetchWithContext(url, readResponse) {
+  let lastError;
+  for (let attempt = 0; attempt <= fetchRetryDelaysMs.length; attempt += 1) {
+    let response;
+    try {
+      response = await fetch(url, {
+        headers: { 'User-Agent': userAgent },
+        signal: AbortSignal.timeout(fetchTimeoutMs),
+      });
+    } catch (error) {
+      lastError = error;
+      if (attempt === fetchRetryDelaysMs.length) break;
+      await new Promise(resolve => setTimeout(resolve, fetchRetryDelaysMs[attempt]));
+      continue;
+    }
+
+    if (!response.ok) {
+      const error = httpResponseError(response, url);
+      if (!retryableHttpStatuses.has(response.status) || attempt === fetchRetryDelaysMs.length) {
+        await response.body?.cancel();
+        throw error;
+      }
+      await response.body?.cancel();
+      lastError = error;
+      await new Promise(resolve => setTimeout(resolve, fetchRetryDelaysMs[attempt]));
+      continue;
+    }
+
+    try {
+      return await readResponse(response);
+    } catch (error) {
+      lastError = error;
+      if (attempt === fetchRetryDelaysMs.length) break;
+      await new Promise(resolve => setTimeout(resolve, fetchRetryDelaysMs[attempt]));
+    }
+  }
+  const detail = lastError instanceof Error ? lastError.message : String(lastError);
+  throw new Error(`fetch failed for ${url}: ${detail}`, { cause: lastError });
 }
 
 async function githubLatest(repo) {
-  return fetchJson(`https://api.github.com/repos/${repo}/releases/latest`);
+  const release = await fetchJson(`https://api.github.com/repos/${repo}/releases/latest`);
+  if (!release || Array.isArray(release) || typeof release.tag_name !== 'string' || !release.tag_name.trim()) {
+    throw new Error(`GitHub latest release response for ${repo} has no usable tag_name`);
+  }
+  return release;
 }
 
 async function latestFfmpegStable() {
   const html = await fetchText('https://ffmpeg.org/releases/');
   const versions = [...html.matchAll(/ffmpeg-(\d+\.\d+(?:\.\d+)?)\.tar\.xz/g)].map(match => match[1]);
-  return [...new Set(versions)].sort(compareVersions).at(-1);
+  const latest = [...new Set(versions)].sort(compareVersions).at(-1);
+  if (!latest) throw new Error('FFmpeg release page contained no usable stable release version');
+  return latest;
 }
 
 async function latestMartinRiedlMacArm64Release() {
@@ -105,15 +189,21 @@ async function latestBtbnFfmpegN81Build() {
           target: match[2] === 'win64' ? 'windows' : 'linux',
           version: match[1],
           url: asset.browser_download_url,
+          sha256: parseSha256Digest(asset.digest),
         };
       })
       .filter(Boolean);
     const unique = [...new Set(assets.map(asset => asset.version))];
     const byTarget = Object.fromEntries(assets.map(asset => [asset.target, asset]));
-    if (unique.length === 1 && byTarget.windows && byTarget.linux) {
+    if (
+      unique.length === 1 &&
+      byTarget.windows?.sha256 &&
+      byTarget.linux?.sha256
+    ) {
       return {
         version: unique[0],
         urls: { windows: byTarget.windows.url, linux: byTarget.linux.url },
+        hashes: { windows: byTarget.windows.sha256, linux: byTarget.linux.sha256 },
       };
     }
   }
@@ -137,7 +227,7 @@ function sourceEngineVersions(sourceLock) {
   const rows = [];
   for (const [target, engines] of Object.entries(sourceLock.targets || {})) {
     for (const [engine, meta] of Object.entries(engines)) {
-      rows.push({ target, engine, version: meta.version, url: meta.url });
+      rows.push({ target, engine, version: meta.version, url: meta.url, sha256: meta.sha256 });
     }
   }
   return rows;
@@ -147,26 +237,58 @@ function packagedEngineVersions(engineLock) {
   const rows = [];
   for (const [target, targetLock] of Object.entries(engineLock.targets || {})) {
     for (const [engine, meta] of Object.entries(targetLock.engines || {})) {
-      rows.push({ target, engine, version: meta.version, url: meta.url });
+      rows.push({ target, engine, version: meta.version, url: meta.url, sha256: meta.sha256 });
     }
   }
   return rows;
 }
 
-function checkRows(rows, latestByEngine, latestByTargetEngine = {}, latestUrlsByTargetEngine = {}) {
+function unavailableLatestVersionError(target, engine, targetSpecific) {
+  const error = new Error(
+    `${targetSpecific ? 'Latest provider version' : 'Latest version'} is unavailable for ${target} ${engine}`
+  );
+  error.code = 'LATEST_VERSION_UNAVAILABLE';
+  return error;
+}
+
+function checkRows(
+  rows,
+  latestByEngine,
+  latestByTargetEngine = {},
+  latestUrlsByTargetEngine = {},
+  targetSpecificEngines = new Set(),
+  latestHashesByTargetEngine = {},
+  latestHashesByUrl = {},
+) {
   let outdated = 0;
   for (const row of rows) {
-    const latest = latestByTargetEngine[`${row.target}:${row.engine}`] || latestByEngine[row.engine];
-    if (!latest) continue;
+    const targetSpecific = targetSpecificEngines.has(row.engine);
+    const targetKey = `${row.target}:${row.engine}`;
+    const latest = targetSpecific
+      ? latestByTargetEngine[targetKey]
+      : latestByTargetEngine[targetKey] || latestByEngine[row.engine];
+    if (typeof latest !== 'string' || !latest.trim()) {
+      throw unavailableLatestVersionError(row.target, row.engine, targetSpecific);
+    }
     const current = normalizeVersion(row.version);
     const wanted = normalizeVersion(latest);
-    const latestUrl = latestUrlsByTargetEngine[`${row.target}:${row.engine}`];
+    const latestUrl = latestUrlsByTargetEngine[targetKey];
     const versionOutdated = compareVersions(current, wanted) < 0;
     const sourceOutdated = Boolean(latestUrl && row.url && row.url !== latestUrl);
-    const status = versionOutdated ? 'outdated' : sourceOutdated ? 'source-outdated' : 'current';
+    const latestHash = latestHashesByTargetEngine[targetKey] || latestHashesByUrl[row.url];
+    const currentHash = typeof row.sha256 === 'string' ? row.sha256.toLowerCase() : '';
+    const hashOutdated = Boolean(latestHash && currentHash !== latestHash);
+    const status = versionOutdated
+      ? 'outdated'
+      : sourceOutdated
+        ? 'source-outdated'
+        : hashOutdated
+          ? 'hash-outdated'
+          : 'current';
     if (status !== 'current') outdated += 1;
     console.log(`  ${row.target} ${row.engine}: ${current} -> ${wanted} ${status}`);
     if (sourceOutdated) console.log(`    source: ${row.url} -> ${latestUrl}`);
+    if (hashOutdated) console.log(`    sha256: ${row.sha256 || 'missing'} -> ${latestHash}`);
   }
   return outdated;
 }
@@ -180,72 +302,158 @@ async function main() {
     npmOutdated(path.join(repoRoot, 'Extensions', 'Browser'))
   );
 
-  const [
-    ytDlp,
-    deno,
-    aria2,
-    ffmpeg,
-    martinRiedlMacArm64Ffmpeg,
-    martinRiedlMacArm64Snapshot,
-    btbnFfmpegN81Build,
-  ] = await Promise.all([
-    githubLatest('yt-dlp/yt-dlp'),
-    githubLatest('denoland/deno'),
-    githubLatest('aria2/aria2'),
-    latestFfmpegStable(),
-    latestMartinRiedlMacArm64Release(),
-    latestMartinRiedlMacArm64Snapshot(),
-    latestBtbnFfmpegN81Build(),
-  ]);
+  const providerChecks = [
+    ['yt-dlp latest release', () => githubLatest('yt-dlp/yt-dlp')],
+    ['Deno latest release', () => githubLatest('denoland/deno')],
+    ['aria2 latest release', () => githubLatest('aria2/aria2')],
+    [
+      'FFmpeg stable release',
+      async () => {
+        const version = await latestFfmpegStable();
+        if (!version) throw new Error('FFmpeg release provider response has no usable version');
+        return version;
+      },
+    ],
+    [
+      'Martin Riedl macOS release',
+      async () => {
+        const version = await latestMartinRiedlMacArm64Release();
+        if (!version) throw new Error('Martin Riedl macOS release provider response has no usable version');
+        return version;
+      },
+    ],
+    [
+      'Martin Riedl macOS snapshot',
+      async () => {
+        const build = await latestMartinRiedlMacArm64Snapshot();
+        if (!build?.version || !build.url) {
+          throw new Error('Martin Riedl FFmpeg provider response has no complete macOS arm64 snapshot');
+        }
+        return build;
+      },
+    ],
+    [
+      'BtbN FFmpeg Windows/Linux build',
+      async () => {
+        const build = await latestBtbnFfmpegN81Build();
+        if (
+          !build?.version ||
+          !build.urls?.windows ||
+          !build.urls?.linux ||
+          !build.hashes?.windows ||
+          !build.hashes?.linux
+        ) {
+          throw new Error('BtbN FFmpeg provider response has no complete Windows/Linux build with SHA-256 digests');
+        }
+        return build;
+      },
+    ],
+  ];
+  const providerResults = await Promise.allSettled(providerChecks.map(([, check]) => check()));
+  const providerFailures = [];
+  for (const [index, [label]] of providerChecks.entries()) {
+    const result = providerResults[index];
+    if (result.status === 'rejected') {
+      const detail = result.reason instanceof Error ? result.reason.message : String(result.reason);
+      providerFailures.push(label);
+      console.error(`provider unavailable: ${label}: ${detail}`);
+    }
+  }
+  const providerValue = index =>
+    providerResults[index].status === 'fulfilled' ? providerResults[index].value : undefined;
+  const ytDlp = providerValue(0);
+  const deno = providerValue(1);
+  const aria2 = providerValue(2);
+  const ffmpeg = providerValue(3);
+  const martinRiedlMacArm64Snapshot = providerValue(5);
+  const btbnFfmpegN81Build = providerValue(6);
   const latestByEngine = {
-    'yt-dlp': ytDlp.tag_name,
-    deno: deno.tag_name,
-    aria2c: aria2.tag_name,
+    'yt-dlp': ytDlp?.tag_name,
+    deno: deno?.tag_name,
+    aria2c: aria2?.tag_name,
     ffmpeg,
   };
-  const latestByTargetEngine = {
-    'x86_64-pc-windows-msvc:ffmpeg': btbnFfmpegN81Build?.version || ffmpeg,
-    'x86_64-unknown-linux-gnu:ffmpeg': btbnFfmpegN81Build?.version || ffmpeg,
-    'aarch64-apple-darwin:ffmpeg': martinRiedlMacArm64Snapshot?.version || martinRiedlMacArm64Ffmpeg,
-  };
-  const latestUrlsByTargetEngine = {
-    'x86_64-pc-windows-msvc:ffmpeg': btbnFfmpegN81Build?.urls.windows,
-    'x86_64-unknown-linux-gnu:ffmpeg': btbnFfmpegN81Build?.urls.linux,
-    'aarch64-apple-darwin:ffmpeg': martinRiedlMacArm64Snapshot?.url,
-  };
+  const latestByTargetEngine = {};
+  const latestUrlsByTargetEngine = {};
+  const latestHashesByTargetEngine = {};
+  const latestHashesByUrl = providerAssetHashes({ ytDlp, deno, aria2 });
+  if (btbnFfmpegN81Build?.version && btbnFfmpegN81Build.urls?.windows && btbnFfmpegN81Build.urls?.linux) {
+    latestByTargetEngine['x86_64-pc-windows-msvc:ffmpeg'] = btbnFfmpegN81Build.version;
+    latestByTargetEngine['x86_64-unknown-linux-gnu:ffmpeg'] = btbnFfmpegN81Build.version;
+    latestUrlsByTargetEngine['x86_64-pc-windows-msvc:ffmpeg'] = btbnFfmpegN81Build.urls.windows;
+    latestUrlsByTargetEngine['x86_64-unknown-linux-gnu:ffmpeg'] = btbnFfmpegN81Build.urls.linux;
+    latestHashesByTargetEngine['x86_64-pc-windows-msvc:ffmpeg'] = btbnFfmpegN81Build.hashes?.windows;
+    latestHashesByTargetEngine['x86_64-unknown-linux-gnu:ffmpeg'] = btbnFfmpegN81Build.hashes?.linux;
+  }
+  if (martinRiedlMacArm64Snapshot?.version && martinRiedlMacArm64Snapshot.url) {
+    latestByTargetEngine['aarch64-apple-darwin:ffmpeg'] = martinRiedlMacArm64Snapshot.version;
+    latestUrlsByTargetEngine['aarch64-apple-darwin:ffmpeg'] = martinRiedlMacArm64Snapshot.url;
+  }
+  const displayVersion = value => (value ? normalizeVersion(value) : 'unavailable');
 
   console.log('\nlatest engines:');
   for (const [engine, version] of Object.entries(latestByEngine)) {
-    console.log(`  ${engine}: ${normalizeVersion(version)}`);
+    console.log(`  ${engine}: ${displayVersion(version)}`);
   }
   console.log('\nlatest engine provider builds:');
-  console.log(`  BtbN FFmpeg n8.1 Windows/Linux: ${normalizeVersion(btbnFfmpegN81Build?.version || ffmpeg)}`);
-  console.log(`  Martin Riedl FFmpeg macOS arm64 snapshot: ${normalizeVersion(martinRiedlMacArm64Snapshot?.version || martinRiedlMacArm64Ffmpeg)}`);
+  console.log(`  BtbN FFmpeg n8.1 Windows/Linux: ${displayVersion(btbnFfmpegN81Build?.version)}`);
+  console.log(`  Martin Riedl FFmpeg macOS arm64 snapshot: ${displayVersion(martinRiedlMacArm64Snapshot?.version)}`);
+
+  const targetSpecificEngines = new Set(['ffmpeg']);
+  const engineCheckFailures = [];
+  const runEngineCheck = (label, rows) => {
+    try {
+      return checkRows(
+        rows,
+        latestByEngine,
+        latestByTargetEngine,
+        latestUrlsByTargetEngine,
+        targetSpecificEngines,
+        latestHashesByTargetEngine,
+        latestHashesByUrl,
+      );
+    } catch (error) {
+      if (error?.code !== 'LATEST_VERSION_UNAVAILABLE') throw error;
+      const detail = error instanceof Error ? error.message : String(error);
+      engineCheckFailures.push(label);
+      console.error(`engine provider unavailable: ${label}: ${detail}`);
+      return 0;
+    }
+  };
 
   console.log('\nengine source lock:');
-  outdatedCount += checkRows(
+  outdatedCount += runEngineCheck(
+    'engine source lock',
     sourceEngineVersions(parseJsonFile('engine-sources.lock.json')),
-    latestByEngine,
-    latestByTargetEngine,
-    latestUrlsByTargetEngine
   );
 
   console.log('\npackaged engine lock:');
-  outdatedCount += checkRows(
+  outdatedCount += runEngineCheck(
+    'packaged engine lock',
     packagedEngineVersions(parseJsonFile('engines.lock.json')),
-    latestByEngine,
-    latestByTargetEngine,
-    latestUrlsByTargetEngine
   );
 
   if (outdatedCount > 0) {
     console.error(`\n${outdatedCount} outdated item(s) found.`);
     process.exit(1);
   }
+  if (providerFailures.length > 0) {
+    console.error(`\n${providerFailures.length} provider check(s) unavailable; refusing to claim that all updates are current.`);
+  }
+  if (engineCheckFailures.length > 0) {
+    console.error(`\n${engineCheckFailures.length} engine lock check(s) unavailable; refusing to claim that all engines are current.`);
+  }
+  if (providerFailures.length > 0 || engineCheckFailures.length > 0) {
+    process.exit(1);
+  }
   console.log('\nAll checked packages and engines are current.');
 }
 
-main().catch(error => {
-  console.error(error instanceof Error ? error.message : error);
-  process.exit(1);
-});
+if (process.argv[1] && path.resolve(process.argv[1]) === fileURLToPath(import.meta.url)) {
+  main().catch(error => {
+    console.error(error instanceof Error ? error.message : error);
+    process.exit(1);
+  });
+}
+
+export { checkRows, fetchJson, fetchText, fetchWithContext, npmExecutable, providerAssetHashes };

scripts/check-updates.node-test.js

@@ -0,0 +1,119 @@
+import assert from 'node:assert/strict';
+import { test } from 'node:test';
+
+import { checkRows, fetchJson, fetchText, npmExecutable, providerAssetHashes } from './check-updates.js';
+
+async function withMockFetch(mockFetch, callback) {
+  const originalFetch = globalThis.fetch;
+  globalThis.fetch = mockFetch;
+  try {
+    return await callback();
+  } finally {
+    globalThis.fetch = originalFetch;
+  }
+}
+
+test('fetchJson retries transient HTTP responses before succeeding', async () => {
+  let attempts = 0;
+  const result = await withMockFetch(async () => {
+    attempts += 1;
+    if (attempts < 3) return new Response('temporarily unavailable', { status: 503 });
+    return new Response(JSON.stringify({ status: 'ok' }), {
+      status: 200,
+      headers: { 'Content-Type': 'application/json' },
+    });
+  }, () => fetchJson('https://example.test/releases'));
+
+  assert.deepEqual(result, { status: 'ok' });
+  assert.equal(attempts, 3);
+});
+
+test('fetchText does not retry terminal HTTP responses', async () => {
+  let attempts = 0;
+  await assert.rejects(
+    () =>
+      withMockFetch(async () => {
+        attempts += 1;
+        return new Response('not found', { status: 404 });
+      }, () => fetchText('https://example.test/missing')),
+    /404: https:\/\/example\.test\/missing/
+  );
+  assert.equal(attempts, 1);
+});
+
+test('checkRows fails closed when a latest version is unavailable', () => {
+  assert.throws(
+    () =>
+      checkRows(
+        [{ target: 'test-target', engine: 'test-engine', version: '1.0.0', url: 'https://example.test/engine' }],
+        {}
+      ),
+    /Latest version is unavailable for test-target test-engine/
+  );
+});
+
+test('checkRows does not fall back to the generic release for target-specific engines', () => {
+  assert.throws(
+    () =>
+      checkRows(
+        [{ target: 'test-target', engine: 'ffmpeg', version: '8.1.2', url: 'https://example.test/engine' }],
+        { ffmpeg: '9.0.1' },
+        {},
+        {},
+        new Set(['ffmpeg'])
+      ),
+    /Latest provider version is unavailable for test-target ffmpeg/
+  );
+});
+
+test('checkRows detects a provider hash change when version and URL are current', () => {
+  const outdated = checkRows(
+    [{
+      target: 'test-target',
+      engine: 'test-engine',
+      version: '1.0.0',
+      url: 'https://example.test/engine',
+      sha256: 'a'.repeat(64),
+    }],
+    { 'test-engine': '1.0.0' },
+    {},
+    {},
+    new Set(),
+    {},
+    { 'https://example.test/engine': 'b'.repeat(64) },
+  );
+
+  assert.equal(outdated, 1);
+});
+
+test('checkRows detects an aria2 asset digest change when the provider supplies it', () => {
+  const url = 'https://github.com/aria2/aria2/releases/download/release-1.37.0/aria2-1.37.0-win-64bit-build1.zip';
+  const digest = 'b'.repeat(64);
+  const hashes = providerAssetHashes({
+    aria2: { assets: [{ browser_download_url: url, digest: `sha256:${digest}` }] },
+  });
+
+  const outdated = checkRows(
+    [{
+      target: 'x86_64-pc-windows-msvc',
+      engine: 'aria2c',
+      version: '1.37.0',
+      url,
+      sha256: 'a'.repeat(64),
+    }],
+    { aria2c: '1.37.0' },
+    {},
+    {},
+    new Set(),
+    {},
+    hashes,
+  );
+
+  assert.equal(outdated, 1);
+});
+
+test('npm executable selection uses the Windows command shim when needed', () => {
+  assert.equal(npmExecutable('win32'), 'npm.cmd');
+  assert.equal(npmExecutable('darwin'), 'npm');
+  assert.equal(npmExecutable('linux'), 'npm');
+});

scripts/engine-download.js

@@ -0,0 +1,243 @@
+import fs from 'node:fs';
+import { Readable, Transform } from 'node:stream';
+import { pipeline } from 'node:stream/promises';
+
+import { sha256 } from './engine-payload-integrity.js';
+
+const DEFAULT_ATTEMPTS = 3;
+const DEFAULT_IDLE_TIMEOUT_MS = 120_000;
+const DEFAULT_RETRY_DELAYS_MS = [2_000, 5_000];
+const FILE_RESET_RETRY_DELAYS_MS = [100, 250, 500, 1_000, 2_000];
+
+function parseContentRange(value) {
+  const match = /^bytes (\d+)-(\d+)\/(\d+|\*)$/.exec(value || '');
+  if (!match) return undefined;
+  const start = Number(match[1]);
+  const end = Number(match[2]);
+  const total = match[3] === '*' ? undefined : Number(match[3]);
+  if (!Number.isSafeInteger(start) || !Number.isSafeInteger(end) || end < start) {
+    return undefined;
+  }
+  if (total !== undefined && (!Number.isSafeInteger(total) || end >= total)) {
+    return undefined;
+  }
+  return { start, end, total };
+}
+
+function responseLength(response) {
+  const value = response.headers.get('content-length');
+  if (!value || !/^\d+$/.test(value)) return undefined;
+  const length = Number(value);
+  return Number.isSafeInteger(length) ? length : undefined;
+}
+
+function createDownloadTimeout(idleTimeoutMs) {
+  const controller = new AbortController();
+  let timer;
+  const refresh = () => {
+    clearTimeout(timer);
+    timer = setTimeout(() => {
+      controller.abort(new Error(`Download idle for ${idleTimeoutMs}ms`));
+    }, idleTimeoutMs);
+  };
+  const dispose = () => clearTimeout(timer);
+  refresh();
+  return { signal: controller.signal, refresh, dispose };
+}
+
+function abortReason(signal) {
+  if (signal?.reason instanceof Error) return signal.reason;
+  return new Error('Engine archive download aborted');
+}
+
+function throwIfAborted(signal) {
+  if (signal?.aborted) throw abortReason(signal);
+}
+
+function combineAbortSignals(signals) {
+  const activeSignals = signals.filter(Boolean);
+  const controller = new AbortController();
+  const listeners = [];
+  const abort = signal => {
+    if (!controller.signal.aborted) controller.abort(abortReason(signal));
+  };
+
+  for (const signal of activeSignals) {
+    const listener = () => abort(signal);
+    listeners.push([signal, listener]);
+    if (signal.aborted) abort(signal);
+    else signal.addEventListener('abort', listener, { once: true });
+  }
+
+  return {
+    signal: controller.signal,
+    dispose() {
+      for (const [signal, listener] of listeners) {
+        signal.removeEventListener('abort', listener);
+      }
+    },
+  };
+}
+
+function archiveSize(archive) {
+  try {
+    return fs.statSync(archive).size;
+  } catch (error) {
+    if (error?.code === 'ENOENT') return 0;
+    throw error;
+  }
+}
+
+function checksumMismatchError(name, expected, actual) {
+  const error = new Error(`Archive checksum mismatch for ${name}. Expected ${expected}, got ${actual}`);
+  error.code = 'ARCHIVE_CHECKSUM_MISMATCH';
+  return error;
+}
+
+function sleep(milliseconds, signal) {
+  if (!signal) return new Promise(resolve => setTimeout(resolve, milliseconds));
+  return new Promise((resolve, reject) => {
+    let timer;
+    const cleanup = () => {
+      clearTimeout(timer);
+      signal.removeEventListener('abort', onAbort);
+    };
+    const finish = () => {
+      cleanup();
+      resolve();
+    };
+    const onAbort = () => {
+      cleanup();
+      reject(abortReason(signal));
+    };
+    timer = setTimeout(finish, milliseconds);
+    signal.addEventListener('abort', onAbort, { once: true });
+    if (signal.aborted) onAbort();
+  });
+}
+
+async function resetArchive(archive) {
+  for (let attempt = 0; ; attempt += 1) {
+    try {
+      fs.rmSync(archive, { force: true });
+      return;
+    } catch (error) {
+      const retryable = process.platform === 'win32'
+        && ['EACCES', 'EBUSY', 'EPERM'].includes(error?.code);
+      if (!retryable || attempt >= FILE_RESET_RETRY_DELAYS_MS.length) throw error;
+      await sleep(FILE_RESET_RETRY_DELAYS_MS[attempt]);
+    }
+  }
+}
+
+/**
+ * Download and checksum an engine archive, resuming an interrupted response
+ * when the provider honors HTTP range requests. A provider that ignores the
+ * range is handled safely by replacing the partial file instead of appending
+ * a second full archive to it.
+ */
+export async function downloadEngineArchive({
+  name,
+  url,
+  archive,
+  expectedSha256,
+  attempts = DEFAULT_ATTEMPTS,
+  idleTimeoutMs = DEFAULT_IDLE_TIMEOUT_MS,
+  retryDelaysMs = DEFAULT_RETRY_DELAYS_MS,
+  signal,
+}) {
+  let lastError;
+
+  for (let attempt = 1; attempt <= attempts; attempt += 1) {
+    throwIfAborted(signal);
+    const partialSize = archiveSize(archive);
+    if (partialSize > 0 && sha256(archive) === expectedSha256) return archive;
+    const downloadTimeout = createDownloadTimeout(idleTimeoutMs);
+    const requestSignal = combineAbortSignals([signal, downloadTimeout.signal]);
+    let resetForRetry = false;
+
+    try {
+      const response = await fetch(url, {
+        headers: partialSize > 0 ? { Range: `bytes=${partialSize}-` } : undefined,
+        redirect: 'follow',
+        signal: requestSignal.signal,
+      });
+
+      if (response.status === 416 && partialSize > 0) {
+        await response.body?.cancel();
+        resetForRetry = true;
+        throw new Error(`Retained partial archive range is not satisfiable for ${name}`);
+      }
+
+      if (!response.ok || !response.body) {
+        await response.body?.cancel();
+        throw new Error(`Failed to download ${name}: HTTP ${response.status}`);
+      }
+
+      const contentRange = response.status === 206
+        ? parseContentRange(response.headers.get('content-range'))
+        : undefined;
+      if (response.status === 206 && (!contentRange || contentRange.start !== partialSize)) {
+        await response.body.cancel();
+        throw new Error(`Invalid Content-Range while downloading ${name}`);
+      }
+
+      const append = response.status === 206 && partialSize > 0;
+      const expectedResponseLength = responseLength(response);
+      if (!append && partialSize > 0) {
+        // The provider ignored Range and returned the complete archive.
+        await resetArchive(archive);
+      }
+
+      await pipeline(
+        Readable.fromWeb(response.body),
+        new Transform({
+          transform(chunk, encoding, callback) {
+            downloadTimeout.refresh();
+            callback(null, chunk, encoding);
+          },
+        }),
+        fs.createWriteStream(archive, { flags: append ? 'a' : 'w' }),
+        { signal: requestSignal.signal },
+      );
+
+      throwIfAborted(signal);
+      const finalSize = archiveSize(archive);
+      const expectedFinalSize = contentRange?.total
+        ?? (expectedResponseLength === undefined
+          ? undefined
+          : (append ? partialSize + expectedResponseLength : expectedResponseLength));
+      if (expectedFinalSize !== undefined && finalSize !== expectedFinalSize) {
+        throw new Error(
+          `Incomplete archive for ${name}: expected ${expectedFinalSize} bytes, got ${finalSize}`,
+        );
+      }
+
+      const actual = sha256(archive);
+      if (actual === expectedSha256) return archive;
+
+      resetForRetry = true;
+      throw checksumMismatchError(name, expectedSha256, actual);
+    } catch (error) {
+      if (signal?.aborted) throw abortReason(signal);
+      lastError = error;
+      if (resetForRetry || error?.code === 'ARCHIVE_CHECKSUM_MISMATCH') {
+        await resetArchive(archive);
+      }
+      if (attempt === attempts) {
+        throw new Error(
+          `Failed to download ${name} after ${attempts} attempts: ${
+            error instanceof Error ? error.message : String(error)
+          }`,
+          { cause: error },
+        );
+      }
+      await sleep(retryDelaysMs[attempt - 1] ?? 0, signal);
+    } finally {
+      requestSignal.dispose();
+      downloadTimeout.dispose();
+    }
+  }
+
+  throw lastError;
+}

scripts/engine-download.node-test.js

@@ -0,0 +1,227 @@
+import assert from 'node:assert/strict';
+import { createHash } from 'node:crypto';
+import fs from 'node:fs';
+import os from 'node:os';
+import path from 'node:path';
+import { test } from 'node:test';
+
+import { downloadEngineArchive } from './engine-download.js';
+
+async function withMockFetch(mockFetch, callback) {
+  const originalFetch = globalThis.fetch;
+  globalThis.fetch = mockFetch;
+  try {
+    return await callback();
+  } finally {
+    globalThis.fetch = originalFetch;
+  }
+}
+
+function makeBody(chunks, failure) {
+  return new ReadableStream({
+    start(controller) {
+      for (const chunk of chunks) controller.enqueue(Buffer.from(chunk));
+      if (failure) controller.error(failure);
+      else controller.close();
+    },
+  });
+}
+
+function makeArchivePath() {
+  const directory = fs.mkdtempSync(path.join(os.tmpdir(), 'firelink-engine-download-'));
+  return {
+    directory,
+    archive: path.join(directory, 'engine.zip'),
+  };
+}
+
+function digest(value) {
+  return createHash('sha256').update(value).digest('hex');
+}
+
+test('resumes an interrupted archive response from the retained partial file', async () => {
+  const { directory, archive } = makeArchivePath();
+  const full = Buffer.from('complete archive payload');
+  const prefix = full.subarray(0, 8);
+  const middle = full.subarray(8, 15);
+  const suffix = full.subarray(15);
+  fs.writeFileSync(archive, Buffer.concat([prefix, middle]));
+  const ranges = [];
+  let calls = 0;
+
+  try {
+    await withMockFetch(async (_url, options) => {
+      calls += 1;
+      ranges.push(options.headers?.Range);
+      if (calls === 1) {
+        return new Response(makeBody([], new Error('connection reset')), {
+          status: 206,
+          headers: {
+            'Content-Length': String(suffix.length),
+            'Content-Range': `bytes ${prefix.length + middle.length}-${full.length - 1}/${full.length}`,
+          },
+        });
+      }
+      return new Response(makeBody([suffix]), {
+        status: 206,
+        headers: {
+          'Content-Length': String(suffix.length),
+          'Content-Range': `bytes ${prefix.length + middle.length}-${full.length - 1}/${full.length}`,
+        },
+      });
+    }, async () => {
+      await downloadEngineArchive({
+        name: 'test',
+        url: 'https://example.test/engine.zip',
+        archive,
+        expectedSha256: digest(full),
+        attempts: 2,
+        retryDelaysMs: [0],
+      });
+    });
+
+    assert.deepEqual(
+      ranges,
+      [`bytes=${prefix.length + middle.length}-`, `bytes=${prefix.length + middle.length}-`],
+    );
+    assert.deepEqual(fs.readFileSync(archive), full);
+  } finally {
+    fs.rmSync(directory, { recursive: true, force: true });
+  }
+});
+
+test('replaces a partial archive when the provider ignores the Range request', async () => {
+  const { directory, archive } = makeArchivePath();
+  const full = Buffer.from('complete archive after range fallback');
+  fs.writeFileSync(archive, Buffer.from('stale partial bytes'));
+  let requestedRange;
+
+  try {
+    await withMockFetch(async (_url, options) => {
+      requestedRange = options.headers?.Range;
+      return new Response(full, {
+        status: 200,
+        headers: { 'Content-Length': String(full.length) },
+      });
+    }, async () => {
+      await downloadEngineArchive({
+        name: 'test',
+        url: 'https://example.test/engine.zip',
+        archive,
+        expectedSha256: digest(full),
+        attempts: 1,
+      });
+    });
+
+    assert.equal(requestedRange, 'bytes=19-');
+    assert.deepEqual(fs.readFileSync(archive), full);
+  } finally {
+    fs.rmSync(directory, { recursive: true, force: true });
+  }
+});
+
+test('accepts a complete retained archive without issuing an unsatisfiable range', async () => {
+  const { directory, archive } = makeArchivePath();
+  const full = Buffer.from('complete archive retained after a late connection reset');
+  fs.writeFileSync(archive, full);
+  let calls = 0;
+
+  try {
+    await withMockFetch(async () => {
+      calls += 1;
+      throw new Error('fetch should not be called for a complete retained archive');
+    }, async () => {
+      await downloadEngineArchive({
+        name: 'test',
+        url: 'https://example.test/engine.zip',
+        archive,
+        expectedSha256: digest(full),
+        attempts: 1,
+      });
+    });
+
+    assert.equal(calls, 0);
+    assert.deepEqual(fs.readFileSync(archive), full);
+  } finally {
+    fs.rmSync(directory, { recursive: true, force: true });
+  }
+});
+
+test('restarts from zero after an unsatisfiable retained range', async () => {
+  const { directory, archive } = makeArchivePath();
+  const full = Buffer.from('complete archive after a stale range response');
+  fs.writeFileSync(archive, Buffer.from('stale partial bytes'));
+  const ranges = [];
+  let calls = 0;
+
+  try {
+    await withMockFetch(async (_url, options) => {
+      calls += 1;
+      ranges.push(options.headers?.Range);
+      if (calls === 1) return new Response(null, { status: 416 });
+      return new Response(full, {
+        status: 200,
+        headers: { 'Content-Length': String(full.length) },
+      });
+    }, async () => {
+      await downloadEngineArchive({
+        name: 'test',
+        url: 'https://example.test/engine.zip',
+        archive,
+        expectedSha256: digest(full),
+        attempts: 2,
+        retryDelaysMs: [0],
+      });
+    });
+
+    assert.deepEqual(ranges, ['bytes=19-', undefined]);
+    assert.deepEqual(fs.readFileSync(archive), full);
+  } finally {
+    fs.rmSync(directory, { recursive: true, force: true });
+  }
+});
+
+test('propagates external cancellation without retrying an in-flight archive', async () => {
+  const { directory, archive } = makeArchivePath();
+  const abortController = new AbortController();
+  let calls = 0;
+
+  try {
+    await withMockFetch(async (_url, options) => {
+      calls += 1;
+      assert.equal(options.signal.aborted, false);
+      setTimeout(() => {
+        abortController.abort(new Error('provisioning interrupted'));
+      }, 10);
+      return new Response(new ReadableStream({
+        start(controller) {
+          controller.enqueue(Buffer.from('partial archive bytes'));
+        },
+      }), {
+        status: 200,
+        headers: { 'Content-Length': '100' },
+      });
+    }, async () => {
+      await assert.rejects(
+        downloadEngineArchive({
+          name: 'test',
+          url: 'https://example.test/engine.zip',
+          archive,
+          expectedSha256: digest(Buffer.from('never completed')),
+          attempts: 3,
+          retryDelaysMs: [500, 500],
+          signal: abortController.signal,
+        }),
+        error => {
+          assert.match(error.message, /provisioning interrupted/);
+          return true;
+        },
+      );
+    });
+
+    assert.equal(calls, 1);
+    assert.ok(fs.statSync(archive).size > 0);
+  } finally {
+    fs.rmSync(directory, { recursive: true, force: true });
+  }
+});

scripts/engine-payload-promotion.js

@@ -0,0 +1,164 @@
+import fs from 'node:fs';
+import path from 'node:path';
+
+const RETRY_DELAYS_MS = [100, 250, 500, 1_000, 2_000];
+
+function pathExists(value) {
+  try {
+    fs.lstatSync(value);
+    return true;
+  } catch (error) {
+    if (error?.code === 'ENOENT') return false;
+    throw error;
+  }
+}
+
+function previousPayloadPrefix(destination) {
+  return `.${path.basename(destination)}.previous-`;
+}
+
+function previousPayloads(destination) {
+  const parent = path.dirname(destination);
+  const prefix = previousPayloadPrefix(destination);
+  return fs.readdirSync(parent, { withFileTypes: true })
+    .filter(entry => entry.name.startsWith(prefix))
+    .map(entry => path.join(parent, entry.name));
+}
+
+function previousPayloadOwner(destination, candidate) {
+  const suffix = path.basename(candidate).slice(previousPayloadPrefix(destination).length);
+  const separator = suffix.indexOf('-');
+  const pid = separator >= 0 ? suffix.slice(0, separator) : suffix;
+  return /^\d+$/.test(pid) ? Number(pid) : null;
+}
+
+function isProcessAlive(pid) {
+  if (!Number.isSafeInteger(pid) || pid <= 0) return false;
+  try {
+    process.kill(pid, 0);
+    return true;
+  } catch (error) {
+    return error?.code === 'EPERM';
+  }
+}
+
+async function removeOrphanedPreviousPayloads(destination) {
+  for (const candidate of previousPayloads(destination)) {
+    const owner = previousPayloadOwner(destination, candidate);
+    if (owner === null || isProcessAlive(owner)) continue;
+    await removePathWithRetry(candidate);
+  }
+}
+
+function provisioningTemporaryPrefix(target) {
+  return `.firelink-engines-${target}-`;
+}
+
+function provisioningTemporaryOwner(target, candidate) {
+  const suffix = path.basename(candidate).slice(provisioningTemporaryPrefix(target).length);
+  const separator = suffix.indexOf('-');
+  const pid = separator >= 0 ? suffix.slice(0, separator) : suffix;
+  return /^\d+$/.test(pid) ? Number(pid) : null;
+}
+
+/**
+ * Removes only staging directories created by a provisioner whose PID is no
+ * longer alive. Legacy directories without an owner PID remain untouched so
+ * a concurrent or ambiguous provisioner can never lose its staging tree.
+ */
+export async function removeOrphanedProvisioningDirectories(destinationParent, target) {
+  const prefix = provisioningTemporaryPrefix(target);
+  for (const entry of fs.readdirSync(destinationParent, { withFileTypes: true })) {
+    if (!entry.isDirectory() || !entry.name.startsWith(prefix)) continue;
+    const candidate = path.join(destinationParent, entry.name);
+    const owner = provisioningTemporaryOwner(target, candidate);
+    if (owner === null || owner === process.pid || isProcessAlive(owner)) continue;
+    await removePathWithRetry(candidate);
+  }
+}
+
+/**
+ * Restores the only previous payload left by a process that died after moving
+ * the destination aside but before publishing its replacement. Multiple
+ * candidates are ambiguous and remain untouched for manual recovery.
+ */
+export function recoverInterruptedPromotion(destination) {
+  if (pathExists(destination)) return;
+
+  const candidates = previousPayloads(destination);
+  if (candidates.length === 0) return;
+  if (candidates.length > 1) {
+    throw new Error(
+      `Cannot recover engine payload at ${destination}: found ${candidates.length} previous payloads`
+    );
+  }
+
+  const candidate = candidates[0];
+  if (!fs.lstatSync(candidate).isDirectory()) {
+    throw new Error(`Cannot recover engine payload from non-directory backup: ${candidate}`);
+  }
+  fs.renameSync(candidate, destination);
+}
+
+function sleep(milliseconds) {
+  return new Promise(resolve => setTimeout(resolve, milliseconds));
+}
+
+export async function removePathWithRetry(value) {
+  for (let attempt = 0; ; attempt += 1) {
+    try {
+      fs.rmSync(value, { recursive: true, force: true });
+      return;
+    } catch (error) {
+      const retryable = process.platform === 'win32'
+        && ['EACCES', 'EBUSY', 'EPERM'].includes(error?.code);
+      if (!retryable || attempt >= RETRY_DELAYS_MS.length) throw error;
+      await sleep(RETRY_DELAYS_MS[attempt]);
+    }
+  }
+}
+
+/**
+ * Publishes a fully verified payload without exposing a partially written
+ * directory. The staging directory must share a filesystem with destination.
+ */
+export async function promoteDirectory(staging, destination) {
+  recoverInterruptedPromotion(destination);
+  const stagingStats = fs.lstatSync(staging);
+  if (!stagingStats.isDirectory()) {
+    throw new Error(`Engine payload staging path is not a directory: ${staging}`);
+  }
+
+  const parent = path.dirname(destination);
+  const backup = path.join(
+    parent,
+    `.${path.basename(destination)}.previous-${process.pid}-${process.hrtime.bigint()}`
+  );
+  let movedExisting = false;
+
+  try {
+    if (pathExists(destination)) {
+      fs.renameSync(destination, backup);
+      movedExisting = true;
+    }
+    fs.renameSync(staging, destination);
+  } catch (error) {
+    if (movedExisting && !pathExists(destination) && pathExists(backup)) {
+      try {
+        fs.renameSync(backup, destination);
+      } catch (restoreError) {
+        throw new AggregateError(
+          [error, restoreError],
+          `Failed to publish engine payload and restore the previous payload at ${destination}`
+        );
+      }
+    } else if (movedExisting && pathExists(destination) && pathExists(backup)) {
+      // Another provisioner won the promotion race; discard only our backup.
+      await removePathWithRetry(backup);
+    }
+    throw error;
+  }
+
+  if (movedExisting) await removePathWithRetry(backup);
+  await removeOrphanedPreviousPayloads(destination);
+}

scripts/engine-payload-promotion.node-test.js

@@ -0,0 +1,150 @@
+import assert from 'node:assert/strict';
+import fs from 'node:fs';
+import os from 'node:os';
+import path from 'node:path';
+import test from 'node:test';
+import {
+  promoteDirectory,
+  recoverInterruptedPromotion,
+  removeOrphanedProvisioningDirectories,
+  removePathWithRetry,
+} from './engine-payload-promotion.js';
+
+function temporaryDirectory() {
+  return fs.mkdtempSync(path.join(os.tmpdir(), 'firelink-payload-promotion-'));
+}
+
+test('promotes a verified staging directory and replaces the previous payload', async () => {
+  const root = temporaryDirectory();
+  try {
+    const destination = path.join(root, 'target');
+    const staging = path.join(root, 'staging', 'payload');
+    fs.mkdirSync(destination, { recursive: true });
+    fs.writeFileSync(path.join(destination, 'engine'), 'old');
+    fs.mkdirSync(staging, { recursive: true });
+    fs.writeFileSync(path.join(staging, 'engine'), 'new');
+
+    await promoteDirectory(staging, destination);
+
+    assert.equal(fs.readFileSync(path.join(destination, 'engine'), 'utf8'), 'new');
+    assert.equal(fs.existsSync(staging), false);
+    assert.equal(fs.readdirSync(root).some(name => name.includes('.previous-')), false);
+  } finally {
+    fs.rmSync(root, { recursive: true, force: true });
+  }
+});
+
+test('rejects an invalid staging path without removing the previous payload', async () => {
+  const root = temporaryDirectory();
+  try {
+    const destination = path.join(root, 'target');
+    const staging = path.join(root, 'staging-file');
+    fs.mkdirSync(destination, { recursive: true });
+    fs.writeFileSync(path.join(destination, 'engine'), 'old');
+    fs.writeFileSync(staging, 'not a directory');
+
+    await assert.rejects(() => promoteDirectory(staging, destination), /not a directory/);
+    assert.equal(fs.readFileSync(path.join(destination, 'engine'), 'utf8'), 'old');
+  } finally {
+    fs.rmSync(root, { recursive: true, force: true });
+  }
+});
+
+test('recovers one interrupted previous payload before publishing a replacement', async () => {
+  const root = temporaryDirectory();
+  try {
+    const destination = path.join(root, 'target');
+    const backup = path.join(root, '.target.previous-123-456');
+    const staging = path.join(root, 'staging', 'payload');
+    fs.mkdirSync(backup, { recursive: true });
+    fs.writeFileSync(path.join(backup, 'engine'), 'old');
+    fs.mkdirSync(staging, { recursive: true });
+    fs.writeFileSync(path.join(staging, 'engine'), 'new');
+
+    await promoteDirectory(staging, destination);
+
+    assert.equal(fs.readFileSync(path.join(destination, 'engine'), 'utf8'), 'new');
+    assert.equal(fs.existsSync(backup), false);
+  } finally {
+    fs.rmSync(root, { recursive: true, force: true });
+  }
+});
+
+test('fails closed when interrupted recovery has multiple candidates', () => {
+  const root = temporaryDirectory();
+  try {
+    const destination = path.join(root, 'target');
+    const firstBackup = path.join(root, '.target.previous-123-456');
+    const secondBackup = path.join(root, '.target.previous-789-012');
+    fs.mkdirSync(firstBackup, { recursive: true });
+    fs.mkdirSync(secondBackup, { recursive: true });
+
+    assert.throws(
+      () => recoverInterruptedPromotion(destination),
+      /found 2 previous payloads/
+    );
+    assert.equal(fs.existsSync(destination), false);
+    assert.equal(fs.existsSync(firstBackup), true);
+    assert.equal(fs.existsSync(secondBackup), true);
+  } finally {
+    fs.rmSync(root, { recursive: true, force: true });
+  }
+});
+
+test('removes a temporary payload tree after it becomes disposable', async () => {
+  const root = temporaryDirectory();
+  try {
+    const temporary = path.join(root, 'temporary');
+    fs.mkdirSync(path.join(temporary, 'nested'), { recursive: true });
+    fs.writeFileSync(path.join(temporary, 'nested', 'archive'), 'payload');
+
+    await removePathWithRetry(temporary);
+
+    assert.equal(fs.existsSync(temporary), false);
+  } finally {
+    fs.rmSync(root, { recursive: true, force: true });
+  }
+});
+
+test('removes orphaned backups from dead provisioners after a successful publish', async () => {
+  const root = temporaryDirectory();
+  try {
+    const destination = path.join(root, 'target');
+    const orphanedBackup = path.join(root, '.target.previous-999999999-123456');
+    const staging = path.join(root, 'staging', 'payload');
+    fs.mkdirSync(destination, { recursive: true });
+    fs.writeFileSync(path.join(destination, 'engine'), 'old');
+    fs.mkdirSync(orphanedBackup, { recursive: true });
+    fs.writeFileSync(path.join(orphanedBackup, 'engine'), 'orphaned');
+    fs.mkdirSync(staging, { recursive: true });
+    fs.writeFileSync(path.join(staging, 'engine'), 'new');
+
+    await promoteDirectory(staging, destination);
+
+    assert.equal(fs.existsSync(orphanedBackup), false);
+    assert.equal(fs.readFileSync(path.join(destination, 'engine'), 'utf8'), 'new');
+  } finally {
+    fs.rmSync(root, { recursive: true, force: true });
+  }
+});
+
+test('removes only provisioning staging owned by a dead PID', async () => {
+  const root = temporaryDirectory();
+  try {
+    const target = 'x86_64-unknown-linux-gnu';
+    const orphaned = path.join(root, `.firelink-engines-${target}-999999999-dead`);
+    const live = path.join(root, `.firelink-engines-${target}-${process.pid}-live`);
+    const legacy = path.join(root, `.firelink-engines-${target}-legacy`);
+    fs.mkdirSync(orphaned, { recursive: true });
+    fs.mkdirSync(live, { recursive: true });
+    fs.mkdirSync(legacy, { recursive: true });
+
+    await removeOrphanedProvisioningDirectories(root, target);
+
+    assert.equal(fs.existsSync(orphaned), false);
+    assert.equal(fs.existsSync(live), true);
+    assert.equal(fs.existsSync(legacy), true);
+  } finally {
+    fs.rmSync(root, { recursive: true, force: true });
+  }
+});

scripts/provision-engines.js

@@ -1,15 +1,21 @@
 #!/usr/bin/env node
 import fs from 'node:fs';
-import os from 'node:os';
 import path from 'node:path';
-import { Readable, Transform } from 'node:stream';
-import { pipeline } from 'node:stream/promises';
-import { execFileSync } from 'node:child_process';
+import { execFile } from 'node:child_process';
 import { fileURLToPath } from 'node:url';
+import { promisify } from 'node:util';
 import { collectRegularFiles, sha256 } from './engine-payload-integrity.js';
+import { downloadEngineArchive } from './engine-download.js';
+import {
+  promoteDirectory,
+  recoverInterruptedPromotion,
+  removeOrphanedProvisioningDirectories,
+  removePathWithRetry,
+} from './engine-payload-promotion.js';
 
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
 const repoRoot = path.resolve(__dirname, '..');
+const execFileAsync = promisify(execFile);
 const sourceLock = JSON.parse(
   fs.readFileSync(path.join(repoRoot, 'engine-sources.lock.json'), 'utf8')
 );
@@ -34,111 +40,61 @@ if (!targetSources) {
 }
 
 const destination = path.join(repoRoot, 'src-tauri', 'provisioned-engines', target);
-const temporary = fs.mkdtempSync(path.join(os.tmpdir(), `firelink-engines-${target}-`));
 const isWindows = target.includes('windows');
 const executableSuffix = isWindows ? '.exe' : '';
-const DOWNLOAD_ATTEMPTS = 3;
-const DOWNLOAD_IDLE_TIMEOUT_MS = 120_000;
-const DOWNLOAD_RETRY_DELAYS_MS = [2_000, 5_000];
-const FILE_LOCK_RETRY_DELAYS_MS = [100, 250, 500, 1_000, 2_000];
-
-function sleep(milliseconds) {
-  return new Promise(resolve => setTimeout(resolve, milliseconds));
+const provisioningAbortController = new AbortController();
+const signalNames = process.platform === 'win32'
+  ? ['SIGINT', 'SIGTERM']
+  : ['SIGINT', 'SIGTERM', 'SIGHUP'];
+const signalHandlers = new Map();
+for (const signalName of signalNames) {
+  const handler = () => {
+    if (!provisioningAbortController.signal.aborted) {
+      provisioningAbortController.abort(new Error(`Engine provisioning interrupted by ${signalName}`));
+    }
+  };
+  signalHandlers.set(signalName, handler);
+  process.on(signalName, handler);
 }
 
-async function removeFileWithRetry(file) {
-  for (let attempt = 0; ; attempt += 1) {
-    try {
-      fs.rmSync(file, { force: true });
-      return;
-    } catch (error) {
-      const retryable = process.platform === 'win32'
-        && ['EACCES', 'EBUSY', 'EPERM'].includes(error?.code);
-      if (!retryable || attempt >= FILE_LOCK_RETRY_DELAYS_MS.length) {
-        throw error;
-      }
-      await sleep(FILE_LOCK_RETRY_DELAYS_MS[attempt]);
-    }
+let temporary;
+let payloadDestination;
+
+function throwIfProvisioningAborted() {
+  if (provisioningAbortController.signal.aborted) {
+    throw provisioningAbortController.signal.reason;
   }
 }
 
-function createDownloadTimeout() {
-  const controller = new AbortController();
-  let timer;
-  const refresh = () => {
-    clearTimeout(timer);
-    timer = setTimeout(() => {
-      controller.abort(new Error(`Download idle for ${DOWNLOAD_IDLE_TIMEOUT_MS}ms`));
-    }, DOWNLOAD_IDLE_TIMEOUT_MS);
-  };
-  const dispose = () => clearTimeout(timer);
-  refresh();
-  return { signal: controller.signal, refresh, dispose };
-}
-
 async function download(name, source) {
+  throwIfProvisioningAborted();
   const sourcePath = new URL(source.url).pathname;
   const archive = path.join(
     temporary,
     `${name}${sourcePath.endsWith('.tar.xz') ? '.tar.xz' : '.zip'}`
   );
-
-  let lastError;
-  for (let attempt = 1; attempt <= DOWNLOAD_ATTEMPTS; attempt += 1) {
-    const downloadTimeout = createDownloadTimeout();
-    try {
-      const response = await fetch(source.url, {
-        redirect: 'follow',
-        signal: downloadTimeout.signal,
-      });
-      if (!response.ok || !response.body) {
-        throw new Error(`Failed to download ${name}: HTTP ${response.status}`);
-      }
-
-      await pipeline(
-        Readable.fromWeb(response.body),
-        new Transform({
-          transform(chunk, encoding, callback) {
-            downloadTimeout.refresh();
-            callback(null, chunk, encoding);
-          },
-        }),
-        fs.createWriteStream(archive),
-        { signal: downloadTimeout.signal }
-      );
-      break;
-    } catch (error) {
-      lastError = error;
-      await removeFileWithRetry(archive);
-      if (attempt === DOWNLOAD_ATTEMPTS) {
-        throw new Error(
-          `Failed to download ${name} after ${DOWNLOAD_ATTEMPTS} attempts: ${
-            error instanceof Error ? error.message : String(error)
-          }`,
-          { cause: error }
-        );
-      }
-      await sleep(DOWNLOAD_RETRY_DELAYS_MS[attempt - 1]);
-    } finally {
-      downloadTimeout.dispose();
-    }
-  }
-
-  if (lastError && !fs.existsSync(archive)) {
-    throw lastError;
-  }
-
-  const actual = sha256(archive);
-  if (actual !== source.sha256) {
-    throw new Error(`Archive checksum mismatch for ${name}. Expected ${source.sha256}, got ${actual}`);
-  }
+  await downloadEngineArchive({
+    name,
+    url: source.url,
+    archive,
+    expectedSha256: source.sha256,
+    signal: provisioningAbortController.signal,
+  });
+  throwIfProvisioningAborted();
   const extracted = path.join(temporary, `${name}-extracted`);
   fs.mkdirSync(extracted);
   if (archive.endsWith('.zip') && process.platform !== 'win32') {
-    execFileSync('unzip', ['-q', archive, '-d', extracted], { stdio: 'inherit' });
+    await execFileAsync('unzip', ['-q', archive, '-d', extracted], {
+      stdio: 'inherit',
+      signal: provisioningAbortController.signal,
+    });
   } else {
-    execFileSync('tar', ['-xf', archive, '-C', extracted], { stdio: 'inherit' });
+    await execFileAsync('tar', ['-xf', archive, '-C', extracted], {
+      stdio: 'inherit',
+      signal: provisioningAbortController.signal,
+    });
   }
+  throwIfProvisioningAborted();
   return extracted;
 }
 
@@ -160,13 +116,13 @@ function findFile(root, names) {
 }
 
 function copyExecutable(source, engine) {
-  const output = path.join(destination, `${engine}-${target}${executableSuffix}`);
+  const output = path.join(payloadDestination, `${engine}-${target}${executableSuffix}`);
   fs.copyFileSync(source, output);
   if (!isWindows) fs.chmodSync(output, 0o755);
 }
 
 function writePayloadManifest() {
-  const files = collectRegularFiles(destination, {
+  const files = collectRegularFiles(payloadDestination, {
     ignoredNames: ['payload-manifest.json'],
   });
   const manifest = {
@@ -184,27 +140,36 @@ function writePayloadManifest() {
     ),
     files: Object.fromEntries(
       files.map(file => [
-        path.relative(destination, file).split(path.sep).join('/'),
+        path.relative(payloadDestination, file).split(path.sep).join('/'),
         sha256(file)
       ])
     )
   };
   fs.writeFileSync(
-    path.join(destination, 'payload-manifest.json'),
+    path.join(payloadDestination, 'payload-manifest.json'),
     `${JSON.stringify(manifest, null, 2)}\n`
   );
 }
 
 try {
-  fs.rmSync(destination, { recursive: true, force: true });
-  fs.mkdirSync(destination, { recursive: true });
+  const destinationParent = path.dirname(destination);
+  fs.mkdirSync(destinationParent, { recursive: true });
+  recoverInterruptedPromotion(destination);
+  await removeOrphanedProvisioningDirectories(destinationParent, target);
+  throwIfProvisioningAborted();
+  // Keep staging on the destination filesystem so the final rename is atomic.
+  temporary = fs.mkdtempSync(
+    path.join(destinationParent, `.firelink-engines-${target}-${process.pid}-`)
+  );
+  payloadDestination = path.join(temporary, 'payload');
+  fs.mkdirSync(payloadDestination, { recursive: true });
 
   const ytdlp = await download('yt-dlp', targetSources['yt-dlp']);
   copyExecutable(
     findFile(ytdlp, isWindows ? ['yt-dlp.exe'] : ['yt-dlp_linux']),
     'yt-dlp'
   );
-  fs.cpSync(path.join(ytdlp, '_internal'), path.join(destination, '_internal'), {
+  fs.cpSync(path.join(ytdlp, '_internal'), path.join(payloadDestination, '_internal'), {
     recursive: true,
     preserveTimestamps: true
   });
@@ -219,7 +184,12 @@ try {
   copyExecutable(findFile(aria2, isWindows ? ['aria2c.exe'] : ['aria2c']), 'aria2c');
 
   writePayloadManifest();
+  throwIfProvisioningAborted();
+  await promoteDirectory(payloadDestination, destination);
   console.log(`Provisioned locked engine payload at ${destination}`);
 } finally {
-  fs.rmSync(temporary, { recursive: true, force: true });
+  if (temporary) await removePathWithRetry(temporary);
+  for (const [signalName, handler] of signalHandlers) {
+    process.removeListener(signalName, handler);
+  }
 }

scripts/release-workflow.node-test.js

@@ -0,0 +1,25 @@
+import assert from 'node:assert/strict';
+import fs from 'node:fs';
+import path from 'node:path';
+import { test } from 'node:test';
+
+const repositoryRoot = path.resolve(import.meta.dirname, '..');
+const releaseWorkflow = fs.readFileSync(
+  path.join(repositoryRoot, '.github', 'workflows', 'release.yml'),
+  'utf8',
+);
+
+test('release Linux dependency installation is mirror-normalized and bounded', () => {
+  assert.match(releaseWorkflow, /azure\\\.archive\\\.ubuntu\\\.com/);
+  assert.equal((releaseWorkflow.match(/Acquire::Retries=3/g) || []).length, 2);
+  assert.equal((releaseWorkflow.match(/timeout --foreground --signal=TERM --kill-after=30s 10m apt-get/g) || []).length, 2);
+  assert.doesNotMatch(releaseWorkflow, /^\s*sudo apt-get (update|install)/m);
+});
+
+test('macOS release verification uses the app mounted from the final DMG', () => {
+  assert.match(releaseWorkflow, /npm run verify:macos-signing -- --dmg "\$DMG"/);
+  assert.match(releaseWorkflow, /hdiutil attach -nobrowse -readonly -mountpoint "\$MOUNT_POINT" "\$DMG"/);
+  assert.match(releaseWorkflow, /find "\$MOUNT_POINT" -maxdepth 1 -type d -name 'Firelink\.app'/);
+  assert.match(releaseWorkflow, /node scripts\/verify-binaries\.js --search-root "\$APP"/);
+  assert.doesNotMatch(releaseWorkflow, /verify:macos-signing -- --app "\$APP" --dmg/);
+});

scripts/smoke-aria2-resolver.js

@@ -0,0 +1,232 @@
+#!/usr/bin/env node
+
+import crypto from 'node:crypto';
+import fs from 'node:fs';
+import http from 'node:http';
+import net from 'node:net';
+import os from 'node:os';
+import path from 'node:path';
+import { execFileSync, spawn } from 'node:child_process';
+import { fileURLToPath } from 'node:url';
+
+const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
+const arch = { x64: 'x86_64', arm64: 'aarch64' }[os.arch()];
+const platform = {
+  darwin: 'apple-darwin',
+  linux: 'unknown-linux-gnu',
+  win32: 'pc-windows-msvc',
+}[process.platform];
+if (!arch || !platform) {
+  throw new Error(`Unsupported host: ${os.arch()} / ${process.platform}`);
+}
+const targetTriple = `${arch}-${platform}`;
+const argumentIndex = process.argv.indexOf('--binary');
+const binaryPath = path.resolve(
+  argumentIndex >= 0
+    ? process.argv[argumentIndex + 1]
+    : path.join(
+        repoRoot,
+        'src-tauri',
+        'binaries',
+        `aria2c-${targetTriple}${process.platform === 'win32' ? '.exe' : ''}`,
+      ),
+);
+
+if (!fs.existsSync(binaryPath)) {
+  throw new Error(`Aria2 binary does not exist: ${binaryPath}`);
+}
+
+const wait = milliseconds => new Promise(resolve => setTimeout(resolve, milliseconds));
+
+async function availablePort() {
+  const server = net.createServer();
+  await new Promise((resolve, reject) => {
+    server.once('error', reject);
+    server.listen({ host: '127.0.0.1', port: 0 }, resolve);
+  });
+  const address = server.address();
+  const port = address && typeof address !== 'string' ? address.port : undefined;
+  await new Promise(resolve => server.close(resolve));
+  if (!port) throw new Error('Could not reserve a local port');
+  return port;
+}
+
+async function rpc(port, secret, method, params = []) {
+  const response = await fetch(`http://127.0.0.1:${port}/jsonrpc`, {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({
+      jsonrpc: '2.0',
+      id: crypto.randomUUID(),
+      method,
+      params: [`token:${secret}`, ...params],
+    }),
+    signal: AbortSignal.timeout(3000),
+  });
+  const body = await response.json();
+  if (body.error) throw new Error(`${method}: ${JSON.stringify(body.error)}`);
+  if (!Object.hasOwn(body, 'result')) throw new Error(`${method}: response has no result`);
+  return body.result;
+}
+
+function childExited(child) {
+  return child.exitCode !== null || child.signalCode !== null;
+}
+
+async function waitForChildExit(child, timeoutMs = 3000) {
+  if (childExited(child)) return true;
+  return new Promise(resolve => {
+    let settled = false;
+    let timer;
+    const finish = result => {
+      if (settled) return;
+      settled = true;
+      clearTimeout(timer);
+      child.off('exit', onExit);
+      resolve(result);
+    };
+    const onExit = () => finish(true);
+    timer = setTimeout(() => finish(false), timeoutMs);
+    child.once('exit', onExit);
+    if (childExited(child)) finish(true);
+  });
+}
+
+async function waitForRpc(port, secret) {
+  const deadline = Date.now() + 10000;
+  let lastError;
+  while (Date.now() < deadline) {
+    try {
+      return await rpc(port, secret, 'aria2.getVersion');
+    } catch (error) {
+      lastError = error;
+      await wait(100);
+    }
+  }
+  throw new Error(`Aria2 RPC did not become ready: ${lastError?.message || 'unknown error'}`);
+}
+
+function bencode(value) {
+  if (Buffer.isBuffer(value)) return Buffer.concat([Buffer.from(`${value.length}:`), value]);
+  if (typeof value === 'string') return bencode(Buffer.from(value));
+  if (typeof value === 'number') return Buffer.from(`i${value}e`);
+  if (value && typeof value === 'object') {
+    const entries = Object.entries(value).sort(([left], [right]) => Buffer.compare(Buffer.from(left), Buffer.from(right)));
+    return Buffer.concat([
+      Buffer.from('d'),
+      ...entries.flatMap(([key, child]) => [bencode(key), bencode(child)]),
+      Buffer.from('e'),
+    ]);
+  }
+  throw new Error(`Unsupported bencode value: ${typeof value}`);
+}
+
+async function stop(child, port, secret) {
+  if (!child || childExited(child)) return;
+  try {
+    await rpc(port, secret, 'aria2.shutdown');
+  } catch {
+    // The process may already have exited.
+  }
+  let exited = await waitForChildExit(child);
+  if (!exited) {
+    if (process.platform === 'win32') {
+      try {
+        execFileSync('taskkill', ['/pid', String(child.pid), '/t', '/f'], {
+          stdio: 'ignore',
+          timeout: 3000,
+        });
+      } catch {
+        // The process may have exited between the timeout and taskkill.
+      }
+    } else {
+      child.kill('SIGTERM');
+    }
+    exited = await waitForChildExit(child);
+  }
+  if (!exited && process.platform !== 'win32') {
+    child.kill('SIGKILL');
+    exited = await waitForChildExit(child);
+  }
+  if (!exited) {
+    throw new Error(`Aria2 process ${child.pid} did not exit after forced cleanup`);
+  }
+}
+
+const tempRoot = fs.mkdtempSync(path.join(os.tmpdir(), 'firelink-aria2-resolver-'));
+const secret = `firelink-resolver-${crypto.randomUUID()}`;
+const rpcPort = await availablePort();
+const contentServer = http.createServer((_request, response) => {
+  response.writeHead(200, { 'content-length': '1' });
+  response.end('x');
+});
+await new Promise((resolve, reject) => {
+  contentServer.once('error', reject);
+  contentServer.listen({ host: '127.0.0.1', port: 0 }, resolve);
+});
+const contentPort = contentServer.address().port;
+const libraryPath = path.join(path.dirname(binaryPath), 'aria2-libs');
+const environment = fs.existsSync(libraryPath)
+  ? {
+      ...process.env,
+      OPENSSL_MODULES: libraryPath,
+      ...(process.platform === 'darwin' ? { DYLD_LIBRARY_PATH: libraryPath } : {}),
+    }
+  : process.env;
+const child = spawn(binaryPath, [
+  '--enable-rpc=true',
+  `--rpc-listen-port=${rpcPort}`,
+  '--rpc-listen-all=false',
+  `--rpc-secret=${secret}`,
+  `--dir=${tempRoot}`,
+  '--file-allocation=none',
+  '--enable-dht=false',
+  '--console-log-level=error',
+  '--quiet=true',
+], { env: environment, stdio: ['ignore', 'ignore', 'pipe'] });
+let stderr = '';
+child.stderr.on('data', chunk => { stderr += chunk.toString(); });
+
+try {
+  const version = await waitForRpc(rpcPort, secret);
+  const features = Array.isArray(version.enabledFeatures) ? version.enabledFeatures : [];
+  console.log(`[INFO] aria2 ${version.version || 'unknown'}; Async DNS: ${features.includes('Async DNS') ? 'supported' : 'not advertised'}`);
+
+  const uriResult = await rpc(rpcPort, secret, 'aria2.addUri', [[`http://127.0.0.1:${contentPort}/file`], {
+    'async-dns': 'false',
+    out: 'resolver-normal.bin',
+  }]);
+  const uriOptions = await rpc(rpcPort, secret, 'aria2.getOption', [uriResult]);
+  if (uriOptions['async-dns'] !== 'false') {
+    throw new Error(`aria2.addUri did not retain async-dns=false: ${JSON.stringify(uriOptions)}`);
+  }
+
+  const torrent = bencode({
+    info: {
+      length: 1,
+      name: 'resolver-torrent.bin',
+      pieces: Buffer.alloc(20),
+      'piece length': 16384,
+    },
+  }).toString('base64');
+  const torrentResult = await rpc(rpcPort, secret, 'aria2.addTorrent', [torrent, [], {
+    'async-dns': 'false',
+    dir: tempRoot,
+  }]);
+  const torrentOptions = await rpc(rpcPort, secret, 'aria2.getOption', [torrentResult]);
+  if (torrentOptions['async-dns'] !== 'false') {
+    throw new Error(`aria2.addTorrent did not retain async-dns=false: ${JSON.stringify(torrentOptions)}`);
+  }
+
+  console.log('[PASS] Aria2 retained system-resolver mode for normal and Torrent transfers');
+} catch (error) {
+  const detail = stderr.trim();
+  throw new Error(`${error.message}${detail ? `\n${detail}` : ''}`);
+} finally {
+  try {
+    await stop(child, rpcPort, secret);
+  } finally {
+    await new Promise(resolve => contentServer.close(resolve));
+    fs.rmSync(tempRoot, { recursive: true, force: true });
+  }
+}

scripts/smoke-aria2-transfers.js

@@ -0,0 +1,486 @@
+#!/usr/bin/env node
+
+import crypto from 'node:crypto';
+import fs from 'node:fs';
+import http from 'node:http';
+import net from 'node:net';
+import os from 'node:os';
+import path from 'node:path';
+import { execFileSync, spawn } from 'node:child_process';
+import { fileURLToPath } from 'node:url';
+
+const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
+const arch = { x64: 'x86_64', arm64: 'aarch64' }[os.arch()];
+const platform = { darwin: 'apple-darwin', linux: 'unknown-linux-gnu', win32: 'pc-windows-msvc' }[process.platform];
+if (!arch || !platform) throw new Error(`Unsupported host: ${os.arch()} / ${process.platform}`);
+const targetTriple = `${arch}-${platform}`;
+const argumentIndex = process.argv.indexOf('--binary');
+const binaryPath = path.resolve(argumentIndex >= 0
+  ? process.argv[argumentIndex + 1]
+  : path.join(repoRoot, 'src-tauri', 'binaries', `aria2c-${targetTriple}${process.platform === 'win32' ? '.exe' : ''}`));
+if (!fs.existsSync(binaryPath)) throw new Error(`Aria2 binary does not exist: ${binaryPath}`);
+
+const wait = milliseconds => new Promise(resolve => setTimeout(resolve, milliseconds));
+
+async function listen(server) {
+  await new Promise((resolve, reject) => {
+    server.once('error', reject);
+    server.listen({ host: '127.0.0.1', port: 0 }, resolve);
+  });
+  const address = server.address();
+  if (!address || typeof address === 'string') throw new Error('Could not allocate local fixture port');
+  return address.port;
+}
+
+async function availablePort() {
+  const server = net.createServer();
+  const port = await listen(server);
+  await new Promise(resolve => server.close(resolve));
+  return port;
+}
+
+async function rpc(port, secret, method, params = []) {
+  const response = await fetch(`http://127.0.0.1:${port}/jsonrpc`, {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({
+      jsonrpc: '2.0',
+      id: crypto.randomUUID(),
+      method,
+      params: [`token:${secret}`, ...params],
+    }),
+    signal: AbortSignal.timeout(5000),
+  });
+  const body = await response.json();
+  if (body.error) throw new Error(`${method}: ${JSON.stringify(body.error)}`);
+  if (!Object.hasOwn(body, 'result')) throw new Error(`${method}: response has no result`);
+  return body.result;
+}
+
+async function waitForRpc(port, secret) {
+  const deadline = Date.now() + 10000;
+  let lastError;
+  while (Date.now() < deadline) {
+    try {
+      return await rpc(port, secret, 'aria2.getVersion');
+    } catch (error) {
+      lastError = error;
+      await wait(100);
+    }
+  }
+  throw new Error(`Aria2 RPC did not become ready: ${lastError?.message || 'unknown error'}`);
+}
+
+async function waitForTerminal(port, secret, gid, timeoutMs = 20000) {
+  const deadline = Date.now() + timeoutMs;
+  let latest;
+  while (Date.now() < deadline) {
+    latest = await rpc(port, secret, 'aria2.tellStatus', [gid, [
+      'status', 'errorCode', 'errorMessage', 'completedLength', 'totalLength',
+    ]]);
+    if (['complete', 'error', 'removed'].includes(latest.status)) return latest;
+    await wait(100);
+  }
+  throw new Error(`Aria2 gid ${gid} did not become terminal: ${JSON.stringify(latest)}`);
+}
+
+async function waitForProgress(port, secret, gid, timeoutMs = 10000) {
+  const deadline = Date.now() + timeoutMs;
+  let latest;
+  while (Date.now() < deadline) {
+    latest = await rpc(port, secret, 'aria2.tellStatus', [gid, ['status', 'completedLength']]);
+    if (latest.status === 'active' && Number(latest.completedLength) > 0) return latest;
+    await wait(25);
+  }
+  throw new Error(`Aria2 gid ${gid} made no observable progress: ${JSON.stringify(latest)}`);
+}
+
+function serveBuffer(request, response, buffer) {
+  const match = /^bytes=(\d+)-(\d*)$/.exec(request.headers.range || '');
+  if (!match) {
+    response.writeHead(200, { 'content-length': String(buffer.length), 'accept-ranges': 'bytes' });
+    response.end(buffer);
+    return;
+  }
+  const start = Number(match[1]);
+  const requestedEnd = match[2] ? Number(match[2]) : buffer.length - 1;
+  const end = Math.min(requestedEnd, buffer.length - 1);
+  if (!Number.isSafeInteger(start) || start < 0 || start > end) {
+    response.writeHead(416, { 'content-range': `bytes */${buffer.length}` });
+    response.end();
+    return;
+  }
+  const body = buffer.subarray(start, end + 1);
+  response.writeHead(206, {
+    'content-length': String(body.length),
+    'content-range': `bytes ${start}-${end}/${buffer.length}`,
+    'accept-ranges': 'bytes',
+  });
+  response.end(body);
+}
+
+function serveThrottledBuffer(request, response, buffer) {
+  const match = /^bytes=(\d+)-(\d*)$/.exec(request.headers.range || '');
+  const start = match ? Number(match[1]) : 0;
+  const requestedEnd = match && match[2] ? Number(match[2]) : buffer.length - 1;
+  const end = Math.min(requestedEnd, buffer.length - 1);
+  if (!Number.isSafeInteger(start) || start < 0 || start > end) {
+    response.writeHead(416, { 'content-range': `bytes */${buffer.length}` });
+    response.end();
+    return;
+  }
+  const body = buffer.subarray(start, end + 1);
+  response.writeHead(match ? 206 : 200, {
+    'content-length': String(body.length),
+    ...(match ? { 'content-range': `bytes ${start}-${end}/${buffer.length}` } : {}),
+    'accept-ranges': 'bytes',
+  });
+  let offset = 0;
+  const timer = setInterval(() => {
+    if (response.destroyed || offset >= body.length) {
+      clearInterval(timer);
+      if (!response.destroyed) response.end();
+      return;
+    }
+    const next = Math.min(offset + 32 * 1024, body.length);
+    response.write(body.subarray(offset, next));
+    offset = next;
+  }, 20);
+  response.once('close', () => clearInterval(timer));
+}
+
+function childExited(child) {
+  return child.exitCode !== null || child.signalCode !== null;
+}
+
+async function waitForChildExit(child, timeoutMs = 8000) {
+  if (childExited(child)) return true;
+  return new Promise(resolve => {
+    let settled = false;
+    const finish = result => {
+      if (settled) return;
+      settled = true;
+      clearTimeout(timer);
+      child.off('exit', onExit);
+      resolve(result);
+    };
+    const onExit = () => finish(true);
+    const timer = setTimeout(() => finish(false), timeoutMs);
+    child.once('exit', onExit);
+    if (childExited(child)) finish(true);
+  });
+}
+
+async function stop(child, port, secret) {
+  if (!child || childExited(child)) return;
+  try {
+    await rpc(port, secret, 'aria2.shutdown');
+  } catch {
+    // It may already be stopping.
+  }
+  let exited = await waitForChildExit(child);
+  if (!exited) {
+    if (process.platform === 'win32') {
+      try {
+        execFileSync('taskkill', ['/pid', String(child.pid), '/t', '/f'], { stdio: 'ignore', timeout: 3000 });
+      } catch {
+        // It may have exited between the timeout and taskkill.
+      }
+    } else {
+      child.kill('SIGTERM');
+    }
+    exited = await waitForChildExit(child);
+  }
+  if (!exited && process.platform !== 'win32') {
+    child.kill('SIGKILL');
+    exited = await waitForChildExit(child);
+  }
+  if (!exited) throw new Error(`Aria2 process ${child.pid} did not exit after cleanup`);
+}
+
+async function removeTempRoot(tempRoot) {
+  let lastError;
+  for (let attempt = 1; attempt <= 10; attempt += 1) {
+    try {
+      fs.rmSync(tempRoot, { recursive: true, force: true });
+      return;
+    } catch (error) {
+      lastError = error;
+      await wait(100 * attempt);
+    }
+  }
+  throw lastError;
+}
+
+const payload = Buffer.alloc(4 * 1024 * 1024, 0x5a);
+const checksum = crypto.createHash('sha256').update(payload).digest('hex');
+const tempRoot = fs.mkdtempSync(path.join(os.tmpdir(), 'firelink-aria2-transfers-'));
+const serverStatPath = path.join(tempRoot, 'server-stat.txt');
+fs.writeFileSync(serverStatPath, '', { mode: 0o600 });
+let finalRequests = 0;
+let finalCredentials = [];
+let redirectSourceCredentials;
+let smokePassed = false;
+let smokeFailure;
+
+const targetServer = http.createServer((request, response) => {
+  finalRequests += 1;
+  finalCredentials.push({
+    authorization: request.headers.authorization,
+    cookie: request.headers.cookie,
+    custom: request.headers['x-firelink-secret'],
+  });
+  serveBuffer(request, response, payload);
+});
+const targetPort = await listen(targetServer);
+const fixtureServer = http.createServer((request, response) => {
+  switch (new URL(request.url, 'http://fixture.invalid').pathname) {
+    case '/range':
+      serveBuffer(request, response, payload);
+      break;
+    case '/no-range':
+      response.writeHead(200, { 'content-length': String(payload.length) });
+      response.end(payload);
+      break;
+    case '/throttled':
+      serveThrottledBuffer(request, response, payload);
+      break;
+    case '/authenticated': {
+      const expectedAuthorization = `Basic ${Buffer.from('fixture-user:fixture-password').toString('base64')}`;
+      if (request.headers.authorization !== expectedAuthorization
+        || request.headers.cookie !== 'fixture-cookie=present'
+        || request.headers['x-firelink-auth'] !== 'present') {
+        response.writeHead(401, { 'content-length': '0' });
+        response.end();
+        break;
+      }
+      serveBuffer(request, response, payload);
+      break;
+    }
+    case '/redirect':
+      redirectSourceCredentials = {
+        authorization: request.headers.authorization,
+        cookie: request.headers.cookie,
+        custom: request.headers['x-firelink-secret'],
+      };
+      response.writeHead(302, { location: `http://127.0.0.1:${targetPort}/final` });
+      response.end();
+      break;
+    case '/missing':
+      response.writeHead(404, { 'content-length': '0' });
+      response.end();
+      break;
+    case '/malformed':
+      response.writeHead(200, { 'content-length': String(payload.length * 2) });
+      response.write(payload.subarray(0, 1024));
+      response.destroy();
+      break;
+    case '/slow': {
+      const slowLength = 64 * 1024;
+      let written = 0;
+      response.writeHead(200, { 'content-length': String(slowLength) });
+      const timer = setInterval(() => {
+        if (response.destroyed || written >= slowLength) {
+          clearInterval(timer);
+          if (!response.destroyed) response.end();
+          return;
+        }
+        response.write(Buffer.alloc(1024, 0x73));
+        written += 1024;
+      }, 500);
+      response.once('close', () => clearInterval(timer));
+      break;
+    }
+    default:
+      response.writeHead(404, { 'content-length': '0' });
+      response.end();
+  }
+});
+const fixturePort = await listen(fixtureServer);
+const rpcPort = await availablePort();
+const unavailableProxyPort = await availablePort();
+const secret = `firelink-transfers-${crypto.randomUUID()}`;
+const configPath = path.join(tempRoot, 'aria2.conf');
+fs.writeFileSync(configPath, `rpc-secret=${secret}\n`, { mode: 0o600 });
+const libraryPath = path.join(path.dirname(binaryPath), 'aria2-libs');
+const environment = fs.existsSync(libraryPath)
+  ? {
+      ...process.env,
+      OPENSSL_MODULES: libraryPath,
+      ...(process.platform === 'darwin' ? { DYLD_LIBRARY_PATH: libraryPath } : {}),
+    }
+  : process.env;
+const child = spawn(binaryPath, [
+  '--enable-rpc=true',
+  `--conf-path=${configPath}`,
+  `--rpc-listen-port=${rpcPort}`,
+  '--rpc-listen-all=false',
+  `--dir=${tempRoot}`,
+  '--file-allocation=none',
+  '--enable-dht=false',
+  '--console-log-level=error',
+  '--quiet=true',
+  `--server-stat-if=${serverStatPath}`,
+  `--server-stat-of=${serverStatPath}`,
+], { env: environment, stdio: ['ignore', 'ignore', 'pipe'] });
+let stderr = '';
+child.stderr.on('data', chunk => { stderr += chunk.toString(); });
+
+try {
+  const version = await waitForRpc(rpcPort, secret);
+  console.log(`[INFO] aria2 ${version.version || 'unknown'} normal-transfer smoke`);
+
+  const rangeGid = await rpc(rpcPort, secret, 'aria2.addUri', [[`http://127.0.0.1:${fixturePort}/range`], {
+    out: 'range.bin', split: '4', 'max-connection-per-server': '4', 'min-split-size': '1M',
+  }]);
+  const rangeStatus = await waitForTerminal(rpcPort, secret, rangeGid);
+  if (rangeStatus.status !== 'complete' || !fs.readFileSync(path.join(tempRoot, 'range.bin')).equals(payload)) {
+    throw new Error(`bounded-range transfer failed: ${JSON.stringify(rangeStatus)}`);
+  }
+
+  const noRangeGid = await rpc(rpcPort, secret, 'aria2.addUri', [[`http://127.0.0.1:${fixturePort}/no-range`], {
+    out: 'no-range.bin', split: '1', 'max-connection-per-server': '1',
+  }]);
+  if ((await waitForTerminal(rpcPort, secret, noRangeGid)).status !== 'complete') {
+    throw new Error('single-connection no-range transfer did not complete');
+  }
+
+  const authenticatedGid = await rpc(rpcPort, secret, 'aria2.addUri', [[`http://127.0.0.1:${fixturePort}/authenticated`], {
+    out: 'authenticated.bin', 'http-user': 'fixture-user', 'http-passwd': 'fixture-password',
+    header: ['Cookie: fixture-cookie=present', 'X-Firelink-Auth: present'],
+  }]);
+  if ((await waitForTerminal(rpcPort, secret, authenticatedGid)).status !== 'complete') {
+    throw new Error('authenticated cookie/header transfer did not complete');
+  }
+
+  const resumeGid = await rpc(rpcPort, secret, 'aria2.addUri', [[`http://127.0.0.1:${fixturePort}/throttled`], {
+    out: 'resume.bin', split: '1', continue: 'true',
+  }]);
+  await waitForProgress(rpcPort, secret, resumeGid);
+  await rpc(rpcPort, secret, 'aria2.pause', [resumeGid]);
+  const pausedStatus = await rpc(rpcPort, secret, 'aria2.tellStatus', [resumeGid, ['status', 'completedLength']]);
+  if (pausedStatus.status !== 'paused' || Number(pausedStatus.completedLength) <= 0) {
+    throw new Error(`normal transfer did not pause with resumable progress: ${JSON.stringify(pausedStatus)}`);
+  }
+  await rpc(rpcPort, secret, 'aria2.unpause', [resumeGid]);
+  if ((await waitForTerminal(rpcPort, secret, resumeGid)).status !== 'complete') {
+    throw new Error('paused normal transfer did not resume to completion');
+  }
+
+  const cancelGid = await rpc(rpcPort, secret, 'aria2.addUri', [[`http://127.0.0.1:${fixturePort}/throttled`], {
+    out: 'cancel.bin', split: '1',
+  }]);
+  await waitForProgress(rpcPort, secret, cancelGid);
+  await rpc(rpcPort, secret, 'aria2.remove', [cancelGid]);
+  const cancelStatus = await waitForTerminal(rpcPort, secret, cancelGid);
+  if (cancelStatus.status !== 'removed') {
+    throw new Error(`normal transfer cancellation did not reach removed: ${JSON.stringify(cancelStatus)}`);
+  }
+
+  const mirrorGid = await rpc(rpcPort, secret, 'aria2.addUri', [[
+    `http://127.0.0.1:${fixturePort}/missing`,
+    `http://127.0.0.1:${fixturePort}/range`,
+  ], { out: 'mirror.bin', split: '1', 'max-tries': '1', 'uri-selector': 'adaptive' }]);
+  const mirrorStatus = await waitForTerminal(rpcPort, secret, mirrorGid);
+  if (mirrorStatus.status !== 'complete') throw new Error(`adaptive mirror failover failed: ${JSON.stringify(mirrorStatus)}`);
+
+  const checksumGid = await rpc(rpcPort, secret, 'aria2.addUri', [[`http://127.0.0.1:${fixturePort}/range`], {
+    out: 'checksum.bin', checksum: `sha-256=${checksum}`, 'check-integrity': 'true',
+  }]);
+  if ((await waitForTerminal(rpcPort, secret, checksumGid)).status !== 'complete') {
+    throw new Error('valid checksum transfer did not complete');
+  }
+  const mismatchGid = await rpc(rpcPort, secret, 'aria2.addUri', [[`http://127.0.0.1:${fixturePort}/range`], {
+    out: 'checksum-mismatch.bin', checksum: `sha-256=${'0'.repeat(64)}`, 'check-integrity': 'true',
+  }]);
+  const mismatchStatus = await waitForTerminal(rpcPort, secret, mismatchGid);
+  if (mismatchStatus.status !== 'error') throw new Error(`checksum mismatch was not rejected: ${JSON.stringify(mismatchStatus)}`);
+
+  // Model Firelink's manual preflight: credentials reach the original origin,
+  // the redirect is not followed by the HTTP client, and Aria2 receives only
+  // the resolved cross-origin URL without credential options.
+  const redirectProbe = await fetch(`http://127.0.0.1:${fixturePort}/redirect`, {
+    headers: {
+      Range: 'bytes=0-0',
+      Authorization: 'Bearer fixture-secret',
+      Cookie: 'fixture=secret',
+      'X-Firelink-Secret': 'fixture',
+    },
+    redirect: 'manual',
+    signal: AbortSignal.timeout(5000),
+  });
+  if (redirectProbe.status !== 302) throw new Error(`redirect preflight returned HTTP ${redirectProbe.status}`);
+  if (!redirectSourceCredentials || Object.values(redirectSourceCredentials).some(value => !value)) {
+    throw new Error(`redirect source did not receive its scoped credentials: ${JSON.stringify(redirectSourceCredentials)}`);
+  }
+  const redirectLocation = redirectProbe.headers.get('location');
+  if (!redirectLocation) throw new Error('redirect preflight returned no Location header');
+  const resolvedRedirect = new URL(redirectLocation, redirectProbe.url);
+  const redirectGid = await rpc(rpcPort, secret, 'aria2.addUri', [[resolvedRedirect.toString()], {
+    out: 'redirect.bin',
+  }]);
+  const redirectStatus = await waitForTerminal(rpcPort, secret, redirectGid);
+  if (redirectStatus.status !== 'complete' || finalRequests === 0 || finalCredentials.some(headers => Object.values(headers).some(Boolean))) {
+    throw new Error(`redirect credential boundary failed: ${JSON.stringify({ redirectStatus, finalRequests, finalCredentials })}`);
+  }
+
+  const missingGid = await rpc(rpcPort, secret, 'aria2.addUri', [[`http://127.0.0.1:${fixturePort}/missing`], {
+    out: 'missing.bin', 'max-tries': '1',
+  }]);
+  const missingStatus = await waitForTerminal(rpcPort, secret, missingGid);
+  if (missingStatus.status !== 'error' || !['3', '4'].includes(missingStatus.errorCode)) {
+    throw new Error(`not-found error classification changed: ${JSON.stringify(missingStatus)}`);
+  }
+
+  const lowSpeedGid = await rpc(rpcPort, secret, 'aria2.addUri', [[`http://127.0.0.1:${fixturePort}/slow`], {
+    out: 'low-speed.bin', 'max-tries': '1', 'lowest-speed-limit': '1M', timeout: '20',
+  }]);
+  const lowSpeedStatus = await waitForTerminal(rpcPort, secret, lowSpeedGid, 25000);
+  if (lowSpeedStatus.status !== 'error' || lowSpeedStatus.errorCode !== '5') {
+    throw new Error(`low-speed error classification changed: ${JSON.stringify(lowSpeedStatus)}`);
+  }
+
+  const malformedGid = await rpc(rpcPort, secret, 'aria2.addUri', [[`http://127.0.0.1:${fixturePort}/malformed`], {
+    out: 'malformed.bin', 'max-tries': '1',
+  }]);
+  if ((await waitForTerminal(rpcPort, secret, malformedGid)).status !== 'error') {
+    throw new Error('malformed response unexpectedly completed');
+  }
+
+  const proxyGid = await rpc(rpcPort, secret, 'aria2.addUri', [[`http://127.0.0.1:${fixturePort}/range`], {
+    out: 'proxy.bin', 'all-proxy': `http://127.0.0.1:${unavailableProxyPort}`, 'max-tries': '1',
+  }]);
+  if ((await waitForTerminal(rpcPort, secret, proxyGid)).status !== 'error') {
+    throw new Error('unavailable proxy unexpectedly completed');
+  }
+
+  smokePassed = true;
+} catch (error) {
+  const detail = stderr.trim();
+  smokeFailure = new Error(`${error.message}${detail ? `\n${detail}` : ''}`);
+} finally {
+  try {
+    await stop(child, rpcPort, secret);
+    if (smokePassed) {
+      const stat = fs.readFileSync(serverStatPath, 'utf8');
+      if (!stat.includes('host=127.0.0.1')) {
+        throw new Error(`Aria2 did not persist adaptive mirror statistics: ${JSON.stringify(stat)}`);
+      }
+    }
+  } catch (error) {
+    if (!smokeFailure) smokeFailure = error;
+  } finally {
+    try {
+      await Promise.all([
+        new Promise(resolve => fixtureServer.close(resolve)),
+        new Promise(resolve => targetServer.close(resolve)),
+      ]);
+      await removeTempRoot(tempRoot);
+    } catch (error) {
+      if (!smokeFailure) smokeFailure = error;
+    }
+  }
+}
+
+if (smokeFailure) throw smokeFailure;
+console.log('[PASS] Aria2 normal transfers, auth/cookies, resume/cancel, mirrors, integrity, redirects, low-speed/not-found classification, malformed responses, proxy failures, and server statistics');

scripts/smoke-packaged-app.js

@@ -17,6 +17,12 @@ if (!executableArg) {
 const executable = path.resolve(executableArg);
 const assertNoVisibleChildWindows = process.argv.includes('--assert-no-visible-child-windows');
 const assertPortableData = process.argv.includes('--assert-portable-data');
+const MAX_STABILITY_MS = 60_000;
+const MAX_CONSECUTIVE_STABILITY_FAILURES = 3;
+const stabilityMsValue = Number.parseInt(argValue('--stability-ms') || '5000', 10);
+const stabilityMs = Number.isFinite(stabilityMsValue) && stabilityMsValue >= 0
+  ? Math.min(stabilityMsValue, MAX_STABILITY_MS)
+  : 5000;
 const READY_PORT_TIMEOUT_MS = 500;
 const child = spawn(executable, [], {
   cwd: process.env.RUNNER_TEMP || process.env.TMPDIR || process.cwd(),
@@ -83,6 +89,55 @@ async function findReadyPort() {
   }
 }
 
+async function checkReadyPort() {
+  if (readyPort === null) return false;
+
+  try {
+    const response = await fetch(`http://127.0.0.1:${readyPort}/ping`, {
+      signal: AbortSignal.timeout(READY_PORT_TIMEOUT_MS),
+    });
+    const matchesChild = response.headers.get('x-firelink-server') === '1'
+      && response.headers.get('x-firelink-smoke-process-id') === String(child.pid);
+    await response.body?.cancel();
+    return matchesChild;
+  } catch {
+    return false;
+  }
+}
+
+async function assertStableReady() {
+  const deadline = Date.now() + stabilityMs;
+  let consecutiveFailures = 0;
+  while (Date.now() < deadline) {
+    if (spawnError) {
+      throw new Error(`Packaged Firelink failed during stability check: ${spawnError.message}`);
+    }
+    if (childExit) {
+      throw new Error(
+        `Packaged Firelink exited during stability check with code ${childExit.code} signal ${childExit.signal}.`,
+      );
+    }
+    if (await checkReadyPort()) {
+      consecutiveFailures = 0;
+    } else {
+      consecutiveFailures += 1;
+      if (consecutiveFailures >= MAX_CONSECUTIVE_STABILITY_FAILURES) {
+        throw new Error('Packaged Firelink stopped exposing its extension ping endpoint during stability check.');
+      }
+    }
+    await sleep(Math.min(250, Math.max(1, deadline - Date.now())));
+  }
+
+  if (childExit) {
+    throw new Error(
+      `Packaged Firelink exited during stability check with code ${childExit.code} signal ${childExit.signal}.`,
+    );
+  }
+  if (!await checkReadyPort() && !await checkReadyPort()) {
+    throw new Error('Packaged Firelink was not healthy at the end of its stability check.');
+  }
+}
+
 function assertNoVisibleWindows(rootPid) {
   if (process.platform !== 'win32') {
     return;
@@ -277,18 +332,16 @@ async function terminateChild() {
       }
     }
   }
-  if (await waitForChildExit(5000) && await waitForProcessGroupExit(child.pid, 5000)) {
+  const childExited = await waitForChildExit(5000);
+  const processGroupExited = await waitForProcessGroupExit(child.pid, 5000);
+  if (childExited && processGroupExited) {
     return true;
   }
 
-  if (!childWasRunning || childExit) {
-    return false;
-  }
-
   try {
     process.kill(-child.pid, 'SIGKILL');
   } catch {
-    if (!childExit) {
+    if (!childExited) {
       child.kill('SIGKILL');
     }
   }
@@ -338,11 +391,9 @@ try {
     await assertPortableStorage();
   }
 
-  if (childExit) {
-    throw new Error(`Packaged Firelink exited after exposing extension ping endpoint with code ${childExit.code} signal ${childExit.signal}.`);
-  }
+  await assertStableReady();
 
-  console.log(`Packaged Firelink smoke passed on 127.0.0.1:${readyPort}`);
+  console.log(`Packaged Firelink smoke passed on 127.0.0.1:${readyPort} with ${stabilityMs}ms stability`);
 } catch (error) {
   console.error(error instanceof Error ? error.message : String(error));
   process.exitCode = 1;

scripts/verify-companion-release.js

@@ -31,6 +31,7 @@ function exactVersionTag(extensionRoot, expectedTag) {
 export function verifyCompanionRelease({
   repositoryRoot = defaultRepositoryRoot,
   resolveExactTag = exactVersionTag,
+  requireExactTag = true,
 } = {}) {
   const extensionRoot = path.join(repositoryRoot, 'Extensions', 'Browser');
   const packagePath = path.join(extensionRoot, 'package.json');
@@ -53,6 +54,9 @@ export function verifyCompanionRelease({
   }
 
   const expectedTag = `v${packageVersion}`;
+  if (!requireExactTag) {
+    return { tag: null, version: packageVersion };
+  }
   const tag = resolveExactTag(extensionRoot, expectedTag);
   if (!tag) {
     throw new Error(
@@ -68,8 +72,13 @@ export function verifyCompanionRelease({
 
 function main() {
   try {
-    const { tag, version } = verifyCompanionRelease();
-    console.log(`Companion release ${version} matches exact tag ${tag}.`);
+    const requireExactTag = !process.argv.includes('--allow-untagged');
+    const { tag, version } = verifyCompanionRelease({ requireExactTag });
+    console.log(
+      requireExactTag
+        ? `Companion release ${version} matches exact tag ${tag}.`
+        : `Non-publishing Companion package metadata agrees at version ${version}.`
+    );
   } catch (error) {
     console.error(error instanceof Error ? error.message : String(error));
     process.exitCode = 1;

scripts/verify-companion-release.node-test.js

@@ -84,6 +84,27 @@ test('rejects an untagged Companion commit', () => {
   }
 });
 
+test('accepts aligned untagged Companion metadata for a non-publishing audit', () => {
+  const root = createFixture('2.0.7', '2.0.7');
+  let tagLookupCalled = false;
+  try {
+    assert.deepEqual(
+      verifyCompanionRelease({
+        repositoryRoot: root,
+        requireExactTag: false,
+        resolveExactTag: () => {
+          tagLookupCalled = true;
+          return null;
+        },
+      }),
+      { tag: null, version: '2.0.7' }
+    );
+    assert.equal(tagLookupCalled, false);
+  } finally {
+    fs.rmSync(root, { recursive: true, force: true });
+  }
+});
+
 test('rejects a Companion tag for another version', () => {
   const root = createFixture('2.0.7', '2.0.7');
   try {

scripts/verify-release-version.js

@@ -42,23 +42,11 @@ function versionFromRef(ref) {
   return version;
 }
 
-const tag = argValue('--tag') || process.env.GITHUB_REF_NAME;
-const expected = versionFromRef(tag);
 const versions = {
   'package.json': readPackageVersion(repositoryRoot),
   'src-tauri/Cargo.toml': readCargoVersion(repositoryRoot),
   'src-tauri/tauri.conf.json': readTauriVersion(repositoryRoot),
 };
-const mismatches = Object.entries(versions)
-  .filter(([, version]) => version !== expected)
-  .map(([file, version]) => `${file}=${version}`);
-
-if (mismatches.length > 0) {
-  console.error(`Release tag ${tag} does not match the application manifests (expected ${expected}).`);
-  for (const mismatch of mismatches) console.error(`  ${mismatch}`);
-  process.exit(1);
-}
-
 const uniqueVersions = new Set(Object.values(versions));
 if (uniqueVersions.size !== 1) {
   console.error('Application version manifests do not agree:');
@@ -66,4 +54,21 @@ if (uniqueVersions.size !== 1) {
   process.exit(1);
 }
 
-console.log(`Release version ${expected} matches ${Object.keys(versions).length} manifests.`);
+const allowUntagged = process.argv.includes('--allow-untagged');
+const tag = argValue('--tag') || process.env.GITHUB_REF_NAME;
+const expected = allowUntagged ? Object.values(versions)[0] : versionFromRef(tag);
+const mismatches = Object.entries(versions)
+  .filter(([, version]) => version !== expected)
+  .map(([file, version]) => `${file}=${version}`);
+
+if (!allowUntagged && mismatches.length > 0) {
+  console.error(`Release tag ${tag} does not match the application manifests (expected ${expected}).`);
+  for (const mismatch of mismatches) console.error(`  ${mismatch}`);
+  process.exit(1);
+}
+
+console.log(
+  allowUntagged
+    ? `Non-publishing package version ${expected} matches ${Object.keys(versions).length} manifests.`
+    : `Release version ${expected} matches ${Object.keys(versions).length} manifests.`
+);

scripts/verify-release-version.node-test.js

@@ -11,8 +11,8 @@ const currentVersion = JSON.parse(
   fs.readFileSync(path.join(repositoryRoot, 'package.json'), 'utf8')
 ).version;
 
-function runVerifier(tag) {
-  return spawnSync(process.execPath, [verifier, '--tag', tag], {
+function runVerifier(tag, ...extraArguments) {
+  return spawnSync(process.execPath, [verifier, '--tag', tag, ...extraArguments], {
     cwd: repositoryRoot,
     encoding: 'utf8',
   });
@@ -35,3 +35,9 @@ test('release version verifier rejects non-semver tag names', () => {
   assert.equal(result.status, 1);
   assert.match(result.stderr, /semantic version tag/);
 });
+
+test('release version verifier accepts an untagged non-publishing package audit', () => {
+  const result = runVerifier('main', '--allow-untagged');
+  assert.equal(result.status, 0, result.stderr);
+  assert.match(result.stdout, new RegExp(`Non-publishing package version ${currentVersion} matches`));
+});

src-tauri/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "firelink"
-version = "1.3.1"
+version = "1.4.0"
 description = "A fast cross-platform desktop download manager powered by Rust and Tauri"
 authors = ["NimBold"]
 edition = "2021"

src-tauri/binaries/_internal/certifi/cacert.pem

@@ -717,35 +717,6 @@ g1XqfMIpiRvpb7PO4gWEyS8+eIVibslfwXhjdFjASBgMmTnrpMwatXlajRWc2BQN
 BSeOE6Fuwg==
 -----END CERTIFICATE-----
 
-# Issuer: CN=Atos TrustedRoot 2011 O=Atos
-# Subject: CN=Atos TrustedRoot 2011 O=Atos
-# Label: "Atos TrustedRoot 2011"
-# Serial: 6643877497813316402
-# MD5 Fingerprint: ae:b9:c4:32:4b:ac:7f:5d:66:cc:77:94:bb:2a:77:56
-# SHA1 Fingerprint: 2b:b1:f5:3e:55:0c:1d:c5:f1:d4:e6:b7:6a:46:4b:55:06:02:ac:21
-# SHA256 Fingerprint: f3:56:be:a2:44:b7:a9:1e:b3:5d:53:ca:9a:d7:86:4a:ce:01:8e:2d:35:d5:f8:f9:6d:df:68:a6:f4:1a:a4:74
------BEGIN CERTIFICATE-----
-MIIDdzCCAl+gAwIBAgIIXDPLYixfszIwDQYJKoZIhvcNAQELBQAwPDEeMBwGA1UE
-AwwVQXRvcyBUcnVzdGVkUm9vdCAyMDExMQ0wCwYDVQQKDARBdG9zMQswCQYDVQQG
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-lmh6cYGJ4Qvh6hEbaAjMaZ7snkGeRDImeuKHCnE96+RapNLbxc3G3mB/ufNPRJLv
-KrcYPqcZ2Qt9sTdBQrC6YB3y/gkRsPCHe6ed
------END CERTIFICATE-----
-
 # Issuer: CN=QuoVadis Root CA 1 G3 O=QuoVadis Limited
 # Subject: CN=QuoVadis Root CA 1 G3 O=QuoVadis Limited
 # Label: "QuoVadis Root CA 1 G3"
@@ -3861,3 +3832,128 @@ y7Ve7hekm9sEdu4pKeiv+62sUvTXK9Z3hBC9xdIoaDQCQTV2WnXzkoYI9bIeCvZl
 C9p2x1L/Cx6AcCIwwzPbGO2E14vs7dOoY4G1VnxHx1YwlGhza9IuqbnZLBwpvQy6
 uWWL
 -----END CERTIFICATE-----
+
+# Issuer: CN=SECOM TLS RSA Root CA 2024 O=SECOM Trust Systems Co., Ltd.
+# Subject: CN=SECOM TLS RSA Root CA 2024 O=SECOM Trust Systems Co., Ltd.
+# Label: "SECOM TLS RSA Root CA 2024"
+# Serial: 17188327524208271538
+# MD5 Fingerprint: d0:a4:db:32:eb:44:98:d2:62:0b:3e:bc:4d:7c:5c:e9
+# SHA1 Fingerprint: fb:97:96:7c:ef:8d:98:63:06:c0:3b:b6:11:f8:e0:13:97:a2:98:d3
+# SHA256 Fingerprint: 14:35:f2:25:c5:d2:52:d7:a2:19:48:cc:3c:e6:2a:ec:fa:88:00:1e:3d:d7:2d:1c:c3:55:51:00:eb:37:2f:93
+-----BEGIN CERTIFICATE-----
+MIIFmjCCA4KgAwIBAgIJAO6JNNDLgOCyMA0GCSqGSIb3DQEBDAUAMFoxCzAJBgNV
+BAYTAkpQMSYwJAYDVQQKEx1TRUNPTSBUcnVzdCBTeXN0ZW1zIENvLiwgTHRkLjEj
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+TdFap4Yb5aHglmMeNx+fAIhDluWVfxTO7H4dTPU+SFVRMLAh+wwKZfqb94nMeQ==
+-----END CERTIFICATE-----
+
+# Issuer: CN=SECOM TLS ECC Root CA 2024 O=SECOM Trust Systems Co., Ltd.
+# Subject: CN=SECOM TLS ECC Root CA 2024 O=SECOM Trust Systems Co., Ltd.
+# Label: "SECOM TLS ECC Root CA 2024"
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+
+# Issuer: CN=Telia RSA TLS Root CA v3 O=Telia Company AB
+# Subject: CN=Telia RSA TLS Root CA v3 O=Telia Company AB
+# Label: "Telia RSA TLS Root CA v3"
+# Serial: 8028214673410753541795188766939845
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src-tauri/binaries/_internal/curl_cffi-0.15.0.dist-info/RECORD

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src-tauri/binaries/_internal/curl_cffi-0.15.0.dist-info/direct_url.json

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-{"archive_info": {"hash": "sha256=630653d283070b21deca8ee408dcdc98ac4202d80cc9d038db805d45e0b40550", "hashes": {"sha256": "630653d283070b21deca8ee408dcdc98ac4202d80cc9d038db805d45e0b40550"}}, "url": "file:///Users/runner/work/yt-dlp/yt-dlp/build/universal2/curl_cffi-0.15.0-cp310-abi3-macosx_10_9_universal2.whl"}

src-tauri/binaries/_internal/curl_cffi-0.16.0.dist-info/METADATA

@@ -1,6 +1,6 @@
 Metadata-Version: 2.4
 Name: curl_cffi
-Version: 0.15.0
+Version: 0.16.0
 Summary: libcurl ffi bindings for Python, with impersonation support.
 Author-email: lexiforest <infinitesheldon@gmail.com>
 License-Expression: MIT
@@ -19,11 +19,12 @@ Description-Content-Type: text/markdown
 License-File: LICENSE
 Requires-Dist: cffi>=2.0.0
 Requires-Dist: certifi>=2024.2.2
-Requires-Dist: rich
 Provides-Extra: extra
 Requires-Dist: readability-lxml>=0.8.1; extra == "extra"
 Requires-Dist: markdownify>=1.1.0; extra == "extra"
 Requires-Dist: lxml_html_clean; extra == "extra"
+Provides-Extra: cli
+Requires-Dist: rich; extra == "cli"
 Provides-Extra: dev
 Requires-Dist: charset_normalizer<4.0,>=3.3.2; extra == "dev"
 Requires-Dist: coverage<7.0,>=6.4.1; extra == "dev"
@@ -90,12 +91,6 @@ Python 3.10 is the minimum supported version since v0.14.
 
 If you’re looking for a meeting recording API, consider checking out [Recall.ai](https://www.recall.ai/?utm_source=github&utm_medium=sponsorship&utm_campaign=lexiforest-curl_cffi), an API that records Zoom, Google Meet, Microsoft Teams, in-person meetings, and more.
 
-## Residential Proxies
-
-<a href="https://www.thordata.com/?ls=github&lk=curl_" target="_blank"><img src="https://raw.githubusercontent.com/lexiforest/curl_cffi/main/assets/thordata.png" alt="Thordata" height="126" width="240"></a>
-
-Thordata: A reliable and cost-effective proxy service provider. One-click collection of public network data, providing enterprises and developers with stable, efficient, and compliant global proxy IP services. Register for a free trial of [residential proxies](https://www.thordata.com/?ls=github&lk=curl_) and receive 2000 free SERP API calls.
-
 ## Sponsors
 
 Maintenance of this project is made possible by all the <a href="https://github.com/lexiforest/curl_cffi/graphs/contributors">contributors</a> and <a href="https://github.com/sponsors/lexiforest">sponsors</a>. If you'd like to sponsor this project and have your avatar or company logo appear below <a href="https://github.com/sponsors/lexiforest">click here</a>. 💖
@@ -124,6 +119,15 @@ No browser automation. Just simple API calls that return the exact cookies and h
 
 ------
 
+## Impersonate Suite
+
+`curl-cffi` is part of the impersonate suite.
+
+- [curl-impersonate](https://github.com/lexiforest/curl-impersonate). A curl distribution that impersonates browsers.
+- [curl_cffi](https://github.com/lexiforest/curl_cffi). Python binding to curl-impersonate.
+- [impers](https://github.com/lexiforest/impers). Node.js binding to curl-impersonate.
+- [impersonate.pro](https://impersonate.pro). Commercial support, more fingerprints and integrated solutions.
+
 ## Features
 
 - Supports JA3/TLS and http2 fingerprints impersonation, including recent browsers and custom fingerprints.
@@ -163,25 +167,28 @@ replacement for "claws" and "agents".
 |http/2|✅|❌|✅|
 |http/3|☑️<sup>1</sup>|❌|✅|
 |human-friendly|☑️<sup>2</sup>|✅|✅|
-|colorful|❌|✅|✅|
+|colorful|❌|✅|✅<sup>3</sup>|
 |fingerprints|❌|❌|✅|
 
 Notes:
 
 1. You need an http/3 enabled curl build, it's not enabled by default, at leat on my machine.
 2. As a long time command line user, I personally feel very comfortable using `curl -X POST httpbin.org`, but some users may prefer `http GET httpbin.org` syntax. If you prefer the curl syntax, you can keep using `curl-impersonate`.
+3. Install `curl_cffi[cli]` for colorful CLI output. Without `rich`, the CLI uses plain text output.
 
 ## Install
 
     pip install curl_cffi --upgrade
 
 This should work on Linux, macOS and Windows out of the box.
-If it does not work on you platform, you may need to compile and install `curl-impersonate`
-first and set some environment variables like `LD_LIBRARY_PATH`.
 
-Android support, including Termux, is currently in beta, you can install the beta release for testing.
+On macOS, you can also install via Homebrew:
+
+    brew install lexiforest/tap/curl-cffi
+
+<small>Android support, including Termux, is currently in beta, you can install the beta release for testing.
 For BSD systems, we need to get libcurl-impersonate compile first, and then add support in curl_cffi.
-If you are using these OSes, please lend an hand.
+If you are using these OSes, please lend an hand.</small>
 
 To install beta releases:
 
@@ -235,11 +242,6 @@ r = curl_cffi.get(
     impersonate="chrome"
 )
 
-# Randomly choose a browser version based on current market share in real world
-# from: https://caniuse.com/usage-table
-# NOTE: this is a pro feature.
-r = curl_cffi.get("https://example.com", impersonate="realworld")
-
 # To pin a specific version, use version numbers together.
 r = curl_cffi.get("https://tls.browserleaks.com/json", impersonate="chrome124")
 
@@ -273,45 +275,42 @@ print(r.json())
 
 ### Supported impersonate browsers
 
-`curl_cffi` supports the same browser versions as supported by my [fork](https://github.com/lexiforest/curl-impersonate) of [curl-impersonate](https://github.com/lwthiker/curl-impersonate):
+`curl_cffi` supports the same browser versions preset as supported by our [fork](https://github.com/lexiforest/curl-impersonate) of [curl-impersonate](https://github.com/lwthiker/curl-impersonate):
 
-Open source version of curl_cffi includes versions whose fingerprints differ from previous versions.
-If you see a version, e.g. `chrome135`, were skipped, you can simply impersonate it with your own headers and the previous version.
+The open source version of `curl_cffi` includes versions when we are adding new capabilities for impersonating.
+If you see a version, e.g. `chrome135`, was skipped, it's simply because there's nothing new or we were busy at that time. 
+You can simply impersonate it with your own headers and the previous browser target.
 
-If you don't want to look up the headers etc, by yourself, consider buying commercial support from [impersonate.pro](https://impersonate.pro),
-we have comprehensive browser fingerprints database for almost all the browser versions on various platforms.
+For a full list of preset fingerprints, see the [curl-impersonate docs](https://curl-impersonate.readthedocs.io/en/latest/fingerprints.html). 
+We will no longer put duplicated and outdated info here.
 
-If you are trying to impersonate a target other than a browser, use `ja3=...` and `akamai=...`
+If you don't want to look up the headers/etc by yourself, consider buying commercial support from [impersonate.pro](https://impersonate.pro).
+We have comprehensive browser tls, http and JavaScript fingerprints database for almost all the browser versions on various platforms.
+
+Since v0.15.1, you can use `curl-cffi update` to retrieve the latest fingerprints, without updating to a new version.
+We offer the Safari, Chrome, Firefox updates for free and others as part of the [commercial plan](https://impersonate.pro).
+
+The current number of fingerprints:
+
+![Preset](https://img.shields.io/badge/Preset_Fingerprints-37-blue)
+![Free](https://img.shields.io/badge/dynamic/json?url=https%3A%2F%2Fapi.impersonate.pro%2Fv1%2Fcounts&query=%24.free&label=Free%20Fingerprints) 
+![Pro](https://img.shields.io/badge/dynamic/json?url=https%3A%2F%2Fapi.impersonate.pro%2Fv1%2Fcounts&query=%24.all&label=Pro%20Fingerprints)
+
+To see the current list of fingerprints on your device, use the command line:
+
+```sh
+curl-cffi list
+```
+
+To update fingerprints from impersonate.pro, use the command line:
+
+```sh
+curl-cffi update
+```
+
+If you are trying to impersonate a target other than a browser, use `ja3=...`, `akamai=...`, `extra_fp=...`, and `perk=...`
 to specify your own customized fingerprints. See the [docs on impersonation](https://curl-cffi.readthedocs.io/en/latest/impersonate/_index.html) for details.
 
-|Browser|Open Source| Pro version|
-|---|---|---|
-|Chrome|chrome99, chrome100, chrome101, chrome104, chrome107, chrome110, chrome116<sup>[1]</sup>, chrome119<sup>[1]</sup>, chrome120<sup>[1]</sup>, chrome123<sup>[3]</sup>, chrome124<sup>[3]</sup>, chrome131<sup>[4]</sup>, chrome133a<sup>[5][6]</sup>, chrome136<sup>[6]</sup>, chrome142, chrome145<sup>[9]</sup>, chrome146<sup>[9]</sup>|chrome132, chrome134, chrome135|
-|Chrome Android| chrome99_android, chrome131_android <sup>[4]</sup>|chrome132_android, chrome133_android, chrome134_android, chrome135_android|
-|Chrome iOS|N/A|coming soon|
-|Safari <sup>[7]</sup>|safari153 <sup>[2]</sup>, safari155 <sup>[2]</sup>, safari170 <sup>[1]</sup>, safari180 <sup>[4]</sup>, safari184 <sup>[6]</sup>, safari260 <sup>[8]</sup>|coming soon|
-|Safari iOS <sup>[7]</sup>| safari172_ios<sup>[1]</sup>, safari180_ios<sup>[4]</sup>, safari184_ios <sup>[6]</sup>, safari260_ios <sup>[8]</sup>|coming soon|
-|Firefox|firefox133<sup>[5]</sup>, firefox135<sup>[7]</sup>, firefox144, firefox147<sup>[9]</sup>|coming soon|
-|Firefox Android|N/A|firefox135_android|
-|Tor|tor145 <sup>[7]</sup>|coming soon|
-|Edge|edge99, edge101|edge133, edge135|
-|Opera|N/A|coming soon|
-|Brave|N/A|coming soon|
-
-
-Notes:
-
-1. Added in version `0.6.0`.
-2. Fixed in version `0.6.0`, previous http2 fingerprints were [not correct](https://github.com/lwthiker/curl-impersonate/issues/215).
-3. Added in version `0.7.0`.
-4. Added in version `0.8.0`.
-5. Added in version `0.9.0`.
-6. The version postfix `-a`(e.g. `chrome133a`) means that this is an alternative version, i.e. the fingerprint has not been officially updated by browser, but has been observed because of A/B testing.
-5. Added in version `0.10.0`.
-6. Added in version `0.11.0`.
-7. Since `0.11.0`, the format `safari184_ios` is preferred over `safari18_4_ios`, both are supported, but the latter is quite confusing and hard to parse.
-8. Added in  `0.12.0`.
-9. http3 support included.
 
 ### Asyncio
 
@@ -370,11 +369,13 @@ async with AsyncSession() as session:
             print(message)
 ```
 
+See the WebSocket [docs](https://curl-cffi.readthedocs.io/en/latest/websockets.html) for full details and advanced options.
+
 ## Ecosystem
 
 - Integrating with Scrapy: [divtiply/scrapy-curl-cffi](https://github.com/divtiply/scrapy-curl-cffi), [jxlil/scrapy-impersonate](https://github.com/jxlil/scrapy-impersonate) and [tieyongjie/scrapy-fingerprint](https://github.com/tieyongjie/scrapy-fingerprint).
 - Integrating with [requests](https://github.com/el1s7/curl-adapter), [httpx](https://github.com/vgavro/httpx-curl-cffi) as adapter.
-- Integrating with captcha resolvers: [YesCaptcha](https://yescaptcha.atlassian.net/wiki/spaces/YESCAPTCHA/overview). Please see the head area for promo code and link.
+- Integrating with captcha resolvers: [YesCaptcha](https://yescaptcha.com/i/stfnIO).
 
 ## Acknowledgement
 

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+Generator: setuptools (83.0.0)
 Root-Is-Purelib: false
 Generator: delocate 0.13.0
 Tag: cp310-abi3-macosx_10_9_universal2

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@@ -1,133 +0,0 @@
-Metadata-Version: 2.4
-Name: importlib_metadata
-Version: 8.7.1
-Summary: Read metadata from Python packages
-Author-email: "Jason R. Coombs" <jaraco@jaraco.com>
-License-Expression: Apache-2.0
-Project-URL: Source, https://github.com/python/importlib_metadata
-Classifier: Development Status :: 5 - Production/Stable
-Classifier: Intended Audience :: Developers
-Classifier: Programming Language :: Python :: 3
-Classifier: Programming Language :: Python :: 3 :: Only
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-Dynamic: license-file
-
-.. image:: https://img.shields.io/pypi/v/importlib_metadata.svg
-   :target: https://pypi.org/project/importlib_metadata
-
-.. image:: https://img.shields.io/pypi/pyversions/importlib_metadata.svg
-
-.. image:: https://github.com/python/importlib_metadata/actions/workflows/main.yml/badge.svg
-   :target: https://github.com/python/importlib_metadata/actions?query=workflow%3A%22tests%22
-   :alt: tests
-
-.. image:: https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json
-    :target: https://github.com/astral-sh/ruff
-    :alt: Ruff
-
-.. image:: https://readthedocs.org/projects/importlib-metadata/badge/?version=latest
-   :target: https://importlib-metadata.readthedocs.io/en/latest/?badge=latest
-
-.. image:: https://img.shields.io/badge/skeleton-2025-informational
-   :target: https://blog.jaraco.com/skeleton
-
-.. image:: https://tidelift.com/badges/package/pypi/importlib-metadata
-   :target: https://tidelift.com/subscription/pkg/pypi-importlib-metadata?utm_source=pypi-importlib-metadata&utm_medium=readme
-
-Library to access the metadata for a Python package.
-
-This package supplies third-party access to the functionality of
-`importlib.metadata <https://docs.python.org/3/library/importlib.metadata.html>`_
-including improvements added to subsequent Python versions.
-
-
-Compatibility
-=============
-
-New features are introduced in this third-party library and later merged
-into CPython. The following table indicates which versions of this library
-were contributed to different versions in the standard library:
-
-.. list-table::
-   :header-rows: 1
-
-   * - importlib_metadata
-     - stdlib
-   * - 7.0
-     - 3.13
-   * - 6.5
-     - 3.12
-   * - 4.13
-     - 3.11
-   * - 4.6
-     - 3.10
-   * - 1.4
-     - 3.8
-
-
-Usage
-=====
-
-See the `online documentation <https://importlib-metadata.readthedocs.io/>`_
-for usage details.
-
-`Finder authors
-<https://docs.python.org/3/reference/import.html#finders-and-loaders>`_ can
-also add support for custom package installers.  See the above documentation
-for details.
-
-
-Caveats
-=======
-
-This project primarily supports third-party packages installed by PyPA
-tools (or other conforming packages). It does not support:
-
-- Packages in the stdlib.
-- Packages installed without metadata.
-
-Project details
-===============
-
- * Project home: https://github.com/python/importlib_metadata
- * Report bugs at: https://github.com/python/importlib_metadata/issues
- * Code hosting: https://github.com/python/importlib_metadata
- * Documentation: https://importlib-metadata.readthedocs.io/
-
-For Enterprise
-==============
-
-Available as part of the Tidelift Subscription.
-
-This project and the maintainers of thousands of other packages are working with Tidelift to deliver one enterprise subscription that covers all of the open source you use.
-
-`Learn more <https://tidelift.com/subscription/pkg/pypi-importlib-metadata?utm_source=pypi-importlib-metadata&utm_medium=referral&utm_campaign=github>`_.

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src-tauri/binaries/_internal/setuptools/_vendor/importlib_metadata-8.7.1.dist-info/licenses/LICENSE

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src-tauri/binaries/_internal/websockets-17.0.1.dist-info/METADATA

@@ -1,6 +1,6 @@
 Metadata-Version: 2.4
 Name: websockets
-Version: 16.0
+Version: 17.0.1
 Summary: An implementation of the WebSocket Protocol (RFC 6455 & 7692)
 Author-email: Aymeric Augustin <aymeric.augustin@m4x.org>
 License-Expression: BSD-3-Clause
@@ -16,12 +16,12 @@ Classifier: Intended Audience :: Developers
 Classifier: Operating System :: OS Independent
 Classifier: Programming Language :: Python
 Classifier: Programming Language :: Python :: 3
-Classifier: Programming Language :: Python :: 3.10
 Classifier: Programming Language :: Python :: 3.11
 Classifier: Programming Language :: Python :: 3.12
 Classifier: Programming Language :: Python :: 3.13
 Classifier: Programming Language :: Python :: 3.14
-Requires-Python: >=3.10
+Classifier: Programming Language :: Python :: 3.15
+Requires-Python: >=3.11
 Description-Content-Type: text/x-rst
 License-File: LICENSE
 Dynamic: description
@@ -32,7 +32,7 @@ Dynamic: license-file
    :width: 480px
    :alt: websockets
 
-|licence| |version| |pyversions| |tests| |docs| |openssf|
+|licence| |version| |pyversions|
 
 .. |licence| image:: https://img.shields.io/pypi/l/websockets.svg
     :target: https://pypi.python.org/pypi/websockets
@@ -43,15 +43,6 @@ Dynamic: license-file
 .. |pyversions| image:: https://img.shields.io/pypi/pyversions/websockets.svg
     :target: https://pypi.python.org/pypi/websockets
 
-.. |tests| image:: https://img.shields.io/github/checks-status/python-websockets/websockets/main?label=tests
-   :target: https://github.com/python-websockets/websockets/actions/workflows/tests.yml
-
-.. |docs| image:: https://img.shields.io/readthedocs/websockets.svg
-   :target: https://websockets.readthedocs.io/
-
-.. |openssf| image:: https://bestpractices.coreinfrastructure.org/projects/6475/badge
-   :target: https://bestpractices.coreinfrastructure.org/projects/6475
-
 What is ``websockets``?
 -----------------------
 
@@ -63,8 +54,8 @@ with a focus on correctness, simplicity, robustness, and performance.
 Built on top of ``asyncio``, Python's standard asynchronous I/O framework, the
 default implementation provides an elegant coroutine-based API.
 
-An implementation on top of ``threading`` and a Sans-I/O implementation are also
-available.
+Implementations on top of ``threading`` and ``trio`` are also provided, as well
+as a Sans-I/O layer for integration in third-party projects.
 
 `Documentation is available on Read the Docs. <https://websockets.readthedocs.io/>`_
 
@@ -84,8 +75,8 @@ Here's an echo server with the ``asyncio`` API:
             await websocket.send(message)
 
     async def main():
-        async with serve(echo, "localhost", 8765) as server:
-            await server.serve_forever()
+        server = await serve(echo, "localhost", 8765)
+        await server.serve_forever()
 
     asyncio.run(main())
 

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src-tauri/binaries/_internal/websockets-17.0.1.dist-info/WHEEL

@@ -1,5 +1,5 @@
 Wheel-Version: 1.0
-Generator: setuptools (80.9.0)
+Generator: setuptools (83.0.0)
 Root-Is-Purelib: false
 Tag: cp314-cp314-macosx_10_15_universal2
 Generator: delocate 0.13.0

src-tauri/binaries/_internal/websockets-17.0.1.dist-info/direct_url.json

@@ -0,0 +1 @@
+{"archive_info": {"hash": "sha256=53b90c00bc6201ab6695c7ff51a04d0e425514c37515e9eeecd2c1b978ac6c0e", "hashes": {"sha256": "53b90c00bc6201ab6695c7ff51a04d0e425514c37515e9eeecd2c1b978ac6c0e"}}, "url": "file:///Users/runner/work/yt-dlp/yt-dlp/build/wheels/websockets-17.0.1-cp314-cp314-macosx_10_15_universal2.whl"}

src-tauri/tauri.conf.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "Firelink",
-  "version": "1.3.1",
+  "version": "1.4.0",
   "identifier": "com.nimbold.firelink",
   "build": {
     "beforeDevCommand": "node scripts/stage-engines.js && npm run dev",

src-tauri/tests/README.md

@@ -23,3 +23,38 @@ cd src-tauri
 FIRELINK_LIVE_YOUTUBE_URL='https://www.youtube.com/watch?v=dQw4w9WgXcQ' \
   cargo test filters_live_youtube_metadata_from_env --lib -- --ignored --nocapture
 ```
+
+Run the real local Torrent runtime smoke test against the host bundled Aria2
+binary. It starts a local tracker and two Aria2 daemons, then covers magnet
+metadata resolution, saved-metadata hash validation, selected-file output,
+pause/resume, ownership reporting, and cancel/remove:
+
+```sh
+npm run smoke:torrent
+```
+
+Use `node scripts/smoke-torrent.js --binary /path/to/aria2c` when validating a
+packaged or target-specific Aria2 binary.
+
+Run the HTTP-boundary Torrent RPC integration test. It drives the production
+Aria2 RPC client through a local JSON-RPC server and verifies successful
+requests plus HTTP gateway errors:
+
+```sh
+npm run test:torrent:rpc
+```
+
+Run the deterministic unavailable-tracker and Aria2-daemon-exit checks with:
+
+```sh
+npm run smoke:torrent:failure-paths
+```
+
+Native CI runs this failure-path smoke after staging the target-specific
+bundled engines on macOS, Windows, and Linux. Windows executes the Torrent RPC,
+atomic-storage, canonical-cache, and web-seed normalization targets, while
+compiling (but not executing) the queue-manager and library test binaries;
+the Tauri mock harness exits before running on the Windows runner. The
+headless `production_contract` target still executes queue admission,
+normalization, credential-boundary, and retry contracts on Windows without
+constructing a Tauri mock application.

src-tauri/tests/atomic_file.rs

@@ -0,0 +1,102 @@
+use firelink_lib::atomic_write_replace;
+use std::fs;
+use tempfile::tempdir;
+#[cfg(target_os = "macos")]
+use tempfile::tempdir_in;
+
+#[tokio::test]
+async fn atomic_replacement_replaces_existing_file_repeatedly() {
+    let directory = tempdir().expect("temporary directory should be created");
+    let root = fs::canonicalize(directory.path()).expect("temporary directory should canonicalize");
+    let destination = root.join("download.torrent");
+
+    for value in [
+        b"reserved".as_slice(),
+        b"copied".as_slice(),
+        b"databaseCommitted".as_slice(),
+        b"sourceCleanupPending".as_slice(),
+    ] {
+        atomic_write_replace(&destination, value)
+            .await
+            .expect("atomic replacement should succeed");
+        assert_eq!(
+            fs::read(&destination).expect("destination should exist"),
+            value
+        );
+    }
+}
+
+#[cfg(unix)]
+#[tokio::test]
+async fn atomic_replacement_rejects_symbolic_link_destinations() {
+    use std::os::unix::fs::symlink;
+
+    let directory = tempdir().expect("temporary directory should be created");
+    let root = fs::canonicalize(directory.path()).expect("temporary directory should canonicalize");
+    let target = root.join("target");
+    let destination = root.join("download.torrent");
+    fs::write(&target, b"protected").expect("target should be written");
+    symlink(&target, &destination).expect("symbolic link should be created");
+
+    assert!(atomic_write_replace(&destination, b"replacement")
+        .await
+        .is_err());
+    assert_eq!(
+        fs::read(&target).expect("target should remain readable"),
+        b"protected"
+    );
+}
+
+#[cfg(unix)]
+#[tokio::test]
+async fn atomic_replacement_rejects_symbolic_link_parent_components() {
+    use std::os::unix::fs::symlink;
+
+    let directory = tempdir().expect("temporary directory should be created");
+    let root = fs::canonicalize(directory.path()).expect("temporary directory should canonicalize");
+    let target_directory = root.join("target");
+    let linked_directory = root.join("linked");
+    let target_child = target_directory.join("child");
+    std::fs::create_dir(&target_directory).expect("target directory should be created");
+    std::fs::create_dir(&target_child).expect("target child directory should be created");
+    symlink(&target_directory, &linked_directory).expect("symbolic link should be created");
+    let destination = linked_directory.join("child/download.torrent");
+
+    assert!(atomic_write_replace(&destination, b"replacement")
+        .await
+        .is_err());
+    assert!(!target_child.join("download.torrent").exists());
+}
+
+#[cfg(target_os = "macos")]
+#[tokio::test]
+async fn atomic_replacement_accepts_macos_system_path_aliases() {
+    let directory = tempdir_in("/tmp").expect("temporary directory should be created");
+    let destination = directory.path().join("download.torrent");
+
+    atomic_write_replace(&destination, b"replacement")
+        .await
+        .expect("the fixed macOS /tmp alias should be accepted");
+    assert_eq!(fs::read(&destination).unwrap(), b"replacement");
+}
+
+#[tokio::test]
+async fn atomic_replacement_recovers_after_non_regular_destination_failure() {
+    let directory = tempdir().expect("temporary directory should be created");
+    let root = fs::canonicalize(directory.path()).expect("temporary directory should canonicalize");
+    let destination = root.join("download.torrent");
+    fs::create_dir(&destination).expect("non-regular destination should be created");
+
+    assert!(atomic_write_replace(&destination, b"replacement")
+        .await
+        .is_err());
+    fs::remove_dir(&destination).expect("failed destination should be removable");
+
+    atomic_write_replace(&destination, b"recovered")
+        .await
+        .expect("atomic replacement should recover after the failed attempt");
+    assert_eq!(
+        fs::read(&destination).expect("destination should exist"),
+        b"recovered"
+    );
+}

src-tauri/tests/production_contract.rs

@@ -0,0 +1,125 @@
+use firelink_lib::ipc::{TorrentFile, TorrentWebSeed};
+use firelink_lib::queue::{
+    clamp_download_connections, normalize_aria2_disk_cache, normalize_torrent_bind_address,
+    normalize_torrent_dht_message_timeout, normalize_torrent_file_allocation,
+    normalize_torrent_web_seeds, EnqueueItem, QueueManager, SpawnPayload,
+};
+use firelink_lib::retry::{backoff_for, is_permanent_network_error, network_error_class};
+use std::time::Duration;
+
+#[test]
+fn headless_queue_contracts_reject_unsafe_inputs_and_preserve_bounds() {
+    assert_eq!(clamp_download_connections(0), 1);
+    assert_eq!(clamp_download_connections(99), 16);
+    assert_eq!(normalize_aria2_disk_cache(Some(" 32m ")).unwrap(), "32M");
+    assert!(normalize_aria2_disk_cache(Some("0K")).is_err());
+    assert_eq!(
+        normalize_torrent_bind_address(Some(" 2001:db8::1 ")).unwrap(),
+        Some("2001:db8::1".to_string())
+    );
+    assert!(normalize_torrent_bind_address(Some("not-an-ip")).is_err());
+    assert_eq!(normalize_torrent_dht_message_timeout(60).unwrap(), 60);
+    assert!(normalize_torrent_dht_message_timeout(61).is_err());
+    assert_eq!(normalize_torrent_file_allocation(None).unwrap(), "prealloc");
+    assert!(normalize_torrent_file_allocation(Some("sparse")).is_err());
+}
+
+#[test]
+fn headless_torrent_web_seed_contract_deduplicates_and_expands_per_file() {
+    let files = vec![
+        TorrentFile {
+            index: 1,
+            path: "folder/one.bin".to_string(),
+            length: 10,
+        },
+        TorrentFile {
+            index: 2,
+            path: "two.bin".to_string(),
+            length: 20,
+        },
+    ];
+    let seeds = vec![
+        TorrentWebSeed {
+            file_index: 1,
+            uri: "https://mirror.example/base".to_string(),
+        },
+        TorrentWebSeed {
+            file_index: 1,
+            uri: "https://mirror.example/base".to_string(),
+        },
+    ];
+    let normalized = normalize_torrent_web_seeds(Some(&seeds), &files).unwrap();
+    assert_eq!(normalized.len(), 1);
+    let expanded = firelink_lib::queue::expand_torrent_web_seeds(&normalized, &files).unwrap();
+    assert_eq!(
+        expanded,
+        vec![(1, "https://mirror.example/base/folder/one.bin".to_string())]
+    );
+
+    let credentialed = [TorrentWebSeed {
+        file_index: 1,
+        uri: "https://user:pass@mirror.example/file".to_string(),
+    }];
+    assert!(normalize_torrent_web_seeds(Some(&credentialed), &files).is_err());
+    let unknown_file = [TorrentWebSeed {
+        file_index: 3,
+        uri: "https://mirror.example/file".to_string(),
+    }];
+    assert!(normalize_torrent_web_seeds(Some(&unknown_file), &files).is_err());
+}
+
+#[test]
+fn headless_enqueue_contract_strips_torrent_credentials_before_task_creation() {
+    let item = EnqueueItem {
+        id: "torrent".to_string(),
+        queue_id: "main".to_string(),
+        url: "https://example.test/file.torrent".to_string(),
+        destination: "/tmp".to_string(),
+        filename: "file.torrent".to_string(),
+        username: Some("user".to_string()),
+        password: Some("secret".to_string()),
+        headers: Some("Cookie: session=secret".to_string()),
+        cookies: Some("session=secret".to_string()),
+        is_torrent: Some(true),
+        ..EnqueueItem::default()
+    };
+    let task = item.into_task();
+    assert!(task.payload.username.is_none());
+    assert!(task.payload.password.is_none());
+    assert!(task.payload.headers.is_none());
+    assert!(task.payload.cookies.is_none());
+}
+
+#[test]
+fn headless_queue_lifecycle_eligibility_and_retry_contracts_hold() {
+    assert!(QueueManager::<tauri::Wry>::aria2_allocation_phase_eligible(
+        &SpawnPayload::default()
+    ));
+    assert!(
+        !QueueManager::<tauri::Wry>::aria2_allocation_phase_eligible(&SpawnPayload {
+            is_media: true,
+            ..SpawnPayload::default()
+        })
+    );
+    assert!(
+        !QueueManager::<tauri::Wry>::aria2_allocation_phase_eligible(&SpawnPayload {
+            is_torrent: true,
+            torrent_file_allocation: Some("none".to_string()),
+            ..SpawnPayload::default()
+        })
+    );
+    assert!(
+        !QueueManager::<tauri::Wry>::aria2_allocation_phase_eligible(&SpawnPayload {
+            is_torrent: true,
+            torrent_file_allocation: Some("prealloc".to_string()),
+            ..SpawnPayload::default()
+        })
+    );
+    assert_eq!(backoff_for(0), Duration::from_secs(2));
+    assert_eq!(backoff_for(usize::MAX), Duration::from_secs(10));
+    assert_eq!(
+        network_error_class("HTTP/1.1 503 Service Unavailable"),
+        "http"
+    );
+    assert!(is_permanent_network_error("HTTP 403 Forbidden"));
+}

src-tauri/tests/queue_manager.rs

@@ -1,6 +1,6 @@
 use firelink_lib::queue::{
-    Aria2RecreateOutcome, Aria2RefreshOutcome, QueueManager, QueuedTask, SidecarSpawner,
-    SpawnPayload, TaskKind, MEDIA_RUN_CANCELLED,
+    Aria2RecreateOutcome, Aria2RefreshOutcome, Aria2ResolverMode, QueueManager, QueuedTask,
+    SidecarSpawner, SpawnPayload, TaskKind, MEDIA_RUN_CANCELLED,
 };
 use std::sync::atomic::{AtomicUsize, Ordering};
 use std::sync::Arc;
@@ -15,7 +15,27 @@ struct CountingSpawner {
     media_calls: AtomicUsize,
     speed_limit_calls: AtomicUsize,
     last_speed_limit: std::sync::Mutex<Option<String>>,
+    torrent_upload_limit_calls: AtomicUsize,
+    last_torrent_upload_limit: std::sync::Mutex<Option<String>>,
+    block_torrent_upload_limit: std::sync::atomic::AtomicBool,
+    torrent_upload_limit_started: tokio::sync::Notify,
+    torrent_upload_limit_release: tokio::sync::Notify,
+    torrent_peer_options_calls: AtomicUsize,
+    last_torrent_peer_options: std::sync::Mutex<Option<(u32, String)>>,
+    block_torrent_peer_options: std::sync::atomic::AtomicBool,
+    torrent_peer_options_started: tokio::sync::Notify,
+    torrent_peer_options_release: tokio::sync::Notify,
     add_speed_limits: std::sync::Mutex<Vec<Option<String>>>,
+    add_peer_options: std::sync::Mutex<Vec<(Option<u32>, Option<String>)>>,
+    add_resolver_modes: std::sync::Mutex<Vec<Aria2ResolverMode>>,
+    add_transfer_context: std::sync::Mutex<
+        Vec<(
+            Aria2ResolverMode,
+            Option<String>,
+            Option<String>,
+            Option<i32>,
+        )>,
+    >,
     block_speed_limit: std::sync::atomic::AtomicBool,
     speed_limit_started: tokio::sync::Notify,
     speed_limit_release: tokio::sync::Notify,
@@ -188,7 +208,20 @@ impl CountingSpawner {
             media_calls: AtomicUsize::new(0),
             speed_limit_calls: AtomicUsize::new(0),
             last_speed_limit: std::sync::Mutex::new(None),
+            torrent_upload_limit_calls: AtomicUsize::new(0),
+            last_torrent_upload_limit: std::sync::Mutex::new(None),
+            block_torrent_upload_limit: std::sync::atomic::AtomicBool::new(false),
+            torrent_upload_limit_started: tokio::sync::Notify::new(),
+            torrent_upload_limit_release: tokio::sync::Notify::new(),
+            torrent_peer_options_calls: AtomicUsize::new(0),
+            last_torrent_peer_options: std::sync::Mutex::new(None),
+            block_torrent_peer_options: std::sync::atomic::AtomicBool::new(false),
+            torrent_peer_options_started: tokio::sync::Notify::new(),
+            torrent_peer_options_release: tokio::sync::Notify::new(),
             add_speed_limits: std::sync::Mutex::new(Vec::new()),
+            add_peer_options: std::sync::Mutex::new(Vec::new()),
+            add_resolver_modes: std::sync::Mutex::new(Vec::new()),
+            add_transfer_context: std::sync::Mutex::new(Vec::new()),
             block_speed_limit: std::sync::atomic::AtomicBool::new(false),
             speed_limit_started: tokio::sync::Notify::new(),
             speed_limit_release: tokio::sync::Notify::new(),
@@ -265,6 +298,23 @@ impl firelink_lib::queue::SidecarSpawner for CountingSpawner {
             .lock()
             .unwrap()
             .push(payload.speed_limit.clone());
+        self.add_peer_options
+            .lock()
+            .unwrap()
+            .push((
+                payload.torrent_max_peers,
+                payload.torrent_peer_speed_limit.clone(),
+            ));
+        self.add_resolver_modes
+            .lock()
+            .unwrap()
+            .push(payload.aria2_resolver_mode);
+        self.add_transfer_context.lock().unwrap().push((
+            payload.aria2_resolver_mode,
+            payload.headers.clone(),
+            payload.proxy.clone(),
+            payload.connections,
+        ));
         Ok(format!("gid-{call}"))
     }
     async fn remove_uri(&self, _gid: &str) -> Result<(), String> {
@@ -286,6 +336,40 @@ impl firelink_lib::queue::SidecarSpawner for CountingSpawner {
         }
         Ok(())
     }
+    async fn set_torrent_upload_limit(
+        &self,
+        _gid: &str,
+        limit: Option<&str>,
+    ) -> Result<(), String> {
+        self.torrent_upload_limit_calls.fetch_add(1, Ordering::SeqCst);
+        *self.last_torrent_upload_limit.lock().unwrap() = limit.map(str::to_string);
+        if self
+            .block_torrent_upload_limit
+            .load(std::sync::atomic::Ordering::SeqCst)
+        {
+            self.torrent_upload_limit_started.notify_one();
+            self.torrent_upload_limit_release.notified().await;
+        }
+        Ok(())
+    }
+    async fn set_torrent_peer_options(
+        &self,
+        _gid: &str,
+        max_peers: u32,
+        peer_speed_limit: &str,
+    ) -> Result<(), String> {
+        self.torrent_peer_options_calls.fetch_add(1, Ordering::SeqCst);
+        *self.last_torrent_peer_options.lock().unwrap() =
+            Some((max_peers, peer_speed_limit.to_string()));
+        if self
+            .block_torrent_peer_options
+            .load(std::sync::atomic::Ordering::SeqCst)
+        {
+            self.torrent_peer_options_started.notify_one();
+            self.torrent_peer_options_release.notified().await;
+        }
+        Ok(())
+    }
     async fn run_media(&self, _id: &str, _payload: &SpawnPayload, _generation: u64) -> Result<(), String> {
         self.media_calls.fetch_add(1, Ordering::SeqCst);
         Ok(())
@@ -349,7 +433,9 @@ async fn cancellation_between_reservation_and_commit_cannot_start_the_task() {
         .expect("reservation should succeed");
     mgr.cancel_enqueue_generation("a", 7).await;
 
-    let committed = mgr.commit_reserved_enqueue(sample_task("a"), 7).await;
+    let committed = mgr
+        .commit_reserved_enqueue(sample_task("a"), 7, previous)
+        .await;
     assert!(committed.is_err(), "cancelled reservation must not commit");
     mgr.rollback_enqueue_reservation("a", 7, previous).await;
 
@@ -376,6 +462,31 @@ async fn accepted_generation_cannot_be_replayed_after_registry_release() {
         .expect("only a newer lifecycle may reuse the id");
 }
 
+#[tokio::test]
+async fn generation_fenced_pending_removal_handles_a_registry_gap() {
+    let (mgr, _spawner) = make_manager(2);
+    mgr.push_with_generation(sample_task("pending-gap"), 7)
+        .await
+        .expect("the pending lifecycle should be accepted");
+    assert_eq!(
+        mgr.registered_lifecycle_generation("pending-gap").await,
+        Some(7)
+    );
+
+    // Model a delayed cleanup observing the pending task after its registry
+    // marker has already been released. Only the exact lifecycle may be
+    // removed; a newer generation must remain untouched.
+    mgr.release_registered_id("pending-gap").await;
+    assert!(!mgr
+        .remove_from_pending_for_generation("pending-gap", 8)
+        .await);
+    assert_eq!(mgr.pending_order(None).await, vec!["pending-gap".to_string()]);
+    assert!(mgr
+        .remove_from_pending_for_generation("pending-gap", 7)
+        .await);
+    assert!(mgr.pending_order(None).await.is_empty());
+}
+
 #[tokio::test]
 async fn release_permit_is_idempotent() {
     let (mgr, _spawner) = make_manager(2);
@@ -474,6 +585,81 @@ async fn live_aria2_speed_limit_updates_the_current_gid_and_payload() {
     dispatcher.abort();
 }
 
+#[tokio::test]
+async fn explicit_zero_download_limit_overrides_the_global_limit_and_survives_admission() {
+    let (manager, spawner) = make_manager(1);
+    let manager = Arc::new(manager);
+    manager.set_aria2_global_speed_limit(Some("2M".to_string()));
+    let mut task = aria2_task("speed-unlimited-override");
+    task.payload.speed_limit = Some("0".to_string());
+    manager.push(task).await.unwrap();
+
+    let dispatcher = {
+        let manager = Arc::clone(&manager);
+        tokio::spawn(async move { manager.run_dispatcher().await })
+    };
+    timeout(Duration::from_secs(1), async {
+        loop {
+            if manager
+                .aria2_gid_for_download("speed-unlimited-override")
+                .is_some()
+            {
+                break;
+            }
+            tokio::time::sleep(Duration::from_millis(10)).await;
+        }
+    })
+    .await
+    .expect("aria2 dispatch should register a gid");
+
+    assert_eq!(
+        spawner.add_speed_limits.lock().unwrap().as_slice(),
+        &[Some("0".to_string())]
+    );
+    assert!(!manager
+        .aria2_speed_limited("speed-unlimited-override")
+        .await);
+
+    manager
+        .apply_completion(
+            "speed-unlimited-override",
+            firelink_lib::queue::PendingOutcome::Complete,
+        )
+        .await;
+    dispatcher.abort();
+}
+
+#[tokio::test]
+async fn system_action_fence_rejects_new_work_and_force_bypasses_only_firelink_safety() {
+    let (manager, _spawner) = make_manager(1);
+    let mut queued = aria2_task("queued-before-action");
+    manager.push(queued.clone()).await.unwrap();
+    assert!(manager.begin_system_action(false).await.is_err());
+    assert!(manager.remove_from_pending("queued-before-action").await);
+
+    assert!(manager.ensure_aria2_permit("active-before-action").await);
+    assert!(manager.begin_system_action(false).await.is_err());
+    manager.release_permit("active-before-action").await;
+
+    manager
+        .begin_torrent_move("moving-before-action")
+        .await
+        .unwrap();
+    assert!(manager.begin_system_action(false).await.is_err());
+    manager.finish_torrent_move("moving-before-action");
+
+    manager.begin_system_action(true).await.unwrap();
+    let candidate = manager.acquire_aria2_permit_candidate().await.unwrap();
+    assert!(!manager
+        .park_aria2_permit_if_missing("candidate-during-action", candidate)
+        .await);
+    assert!(!manager.has_active_permit("candidate-during-action").await);
+    queued.id = "queued-during-action".to_string();
+    assert!(manager.push(queued).await.is_err());
+    manager.end_system_action();
+    manager.push(aria2_task("queued-after-action")).await.unwrap();
+}
+
 #[tokio::test]
 async fn live_aria2_speed_limit_rejects_invalid_and_non_active_requests() {
     let (manager, spawner) = make_manager(1);
@@ -543,6 +729,304 @@ async fn live_aria2_speed_limit_does_not_update_payload_after_gid_replacement()
     dispatcher.abort();
 }
 
+#[tokio::test]
+async fn live_torrent_upload_limit_updates_current_gid_and_payload() {
+    let (manager, spawner) = make_manager(1);
+    let manager = Arc::new(manager);
+    let mut task = aria2_task("torrent-upload-limit");
+    task.payload.is_torrent = true;
+    manager.push(task).await.unwrap();
+
+    let dispatcher = {
+        let manager = Arc::clone(&manager);
+        tokio::spawn(async move { manager.run_dispatcher().await })
+    };
+    timeout(Duration::from_secs(1), async {
+        loop {
+            if manager.aria2_gid_for_download("torrent-upload-limit").is_some() {
+                break;
+            }
+            tokio::time::sleep(Duration::from_millis(10)).await;
+        }
+    })
+    .await
+    .expect("aria2 dispatch should register a Torrent gid");
+
+    manager
+        .set_aria2_torrent_upload_limit(
+            "torrent-upload-limit",
+            Some("512K".to_string()),
+        )
+        .await
+        .unwrap();
+    assert_eq!(
+        spawner.torrent_upload_limit_calls.load(Ordering::SeqCst),
+        1
+    );
+    assert_eq!(
+        spawner
+            .last_torrent_upload_limit
+            .lock()
+            .unwrap()
+            .as_deref(),
+        Some("512K")
+    );
+    manager
+        .set_aria2_torrent_upload_limit("torrent-upload-limit", None)
+        .await
+        .unwrap();
+    assert_eq!(
+        spawner.torrent_upload_limit_calls.load(Ordering::SeqCst),
+        2
+    );
+    assert!(spawner
+        .last_torrent_upload_limit
+        .lock()
+        .unwrap()
+        .is_none());
+
+    manager.clear_aria2_retry_state("torrent-upload-limit").await;
+    manager.forget_aria2_gid("torrent-upload-limit").await;
+    manager.release_permit("torrent-upload-limit").await;
+    manager.release_registered_id("torrent-upload-limit").await;
+    dispatcher.abort();
+}
+
+#[tokio::test]
+async fn live_torrent_upload_limit_rejects_non_torrents_and_invalid_values() {
+    let (manager, spawner) = make_manager(1);
+
+    assert!(manager
+        .set_aria2_torrent_upload_limit("missing", Some("512K".to_string()))
+        .await
+        .is_err());
+
+    let manager = Arc::new(manager);
+    let task = aria2_task("ordinary-download");
+    manager.push(task).await.unwrap();
+    let dispatcher = {
+        let manager = Arc::clone(&manager);
+        tokio::spawn(async move { manager.run_dispatcher().await })
+    };
+    timeout(Duration::from_secs(1), async {
+        loop {
+            if manager.aria2_gid_for_download("ordinary-download").is_some() {
+                break;
+            }
+            tokio::time::sleep(Duration::from_millis(10)).await;
+        }
+    })
+    .await
+    .expect("aria2 dispatch should register a gid");
+
+    assert!(manager
+        .set_aria2_torrent_upload_limit("ordinary-download", Some("not-a-rate".to_string()))
+        .await
+        .is_err());
+    assert!(manager
+        .set_aria2_torrent_upload_limit("ordinary-download", Some("512K".to_string()))
+        .await
+        .is_err());
+    assert_eq!(spawner.torrent_upload_limit_calls.load(Ordering::SeqCst), 0);
+
+    manager
+        .apply_completion(
+            "ordinary-download",
+            firelink_lib::queue::PendingOutcome::Complete,
+        )
+        .await;
+    dispatcher.abort();
+}
+
+#[tokio::test]
+async fn live_torrent_upload_limit_does_not_update_after_gid_replacement() {
+    let (manager, spawner) = make_manager(1);
+    let manager = Arc::new(manager);
+    let mut task = aria2_task("torrent-upload-stale");
+    task.payload.is_torrent = true;
+    manager.push(task).await.unwrap();
+
+    let dispatcher = {
+        let manager = Arc::clone(&manager);
+        tokio::spawn(async move { manager.run_dispatcher().await })
+    };
+    timeout(Duration::from_secs(1), async {
+        loop {
+            if manager.aria2_gid_for_download("torrent-upload-stale").is_some() {
+                break;
+            }
+            tokio::time::sleep(Duration::from_millis(10)).await;
+        }
+    })
+    .await
+    .expect("aria2 dispatch should register a Torrent gid");
+
+    spawner
+        .block_torrent_upload_limit
+        .store(true, std::sync::atomic::Ordering::SeqCst);
+    let started = spawner.torrent_upload_limit_started.notified();
+    let setter = {
+        let manager = Arc::clone(&manager);
+        tokio::spawn(async move {
+            manager
+                .set_aria2_torrent_upload_limit(
+                    "torrent-upload-stale",
+                    Some("512K".to_string()),
+                )
+                .await
+        })
+    };
+    timeout(Duration::from_secs(1), started)
+        .await
+        .expect("Torrent upload RPC should start");
+
+    manager
+        .remember_gid(
+            "torrent-upload-stale".to_string(),
+            "gid-replaced".to_string(),
+        )
+        .await;
+    spawner.torrent_upload_limit_release.notify_one();
+    assert!(setter.await.unwrap().is_err());
+
+    manager.clear_aria2_retry_state("torrent-upload-stale").await;
+    manager.forget_aria2_gid("torrent-upload-stale").await;
+    manager.release_permit("torrent-upload-stale").await;
+    manager.release_registered_id("torrent-upload-stale").await;
+    dispatcher.abort();
+}
+
+#[tokio::test]
+async fn live_torrent_peer_options_update_current_gid_and_payload() {
+    let (manager, spawner) = make_manager(1);
+    let manager = Arc::new(manager);
+    let mut task = aria2_task("torrent-peer-options");
+    task.payload.is_torrent = true;
+    manager.push(task).await.unwrap();
+
+    let dispatcher = {
+        let manager = Arc::clone(&manager);
+        tokio::spawn(async move { manager.run_dispatcher().await })
+    };
+    timeout(Duration::from_secs(1), async {
+        loop {
+            if manager.aria2_gid_for_download("torrent-peer-options").is_some() {
+                break;
+            }
+            tokio::time::sleep(Duration::from_millis(10)).await;
+        }
+    })
+    .await
+    .expect("aria2 dispatch should register a Torrent gid");
+
+    manager
+        .set_aria2_torrent_peer_options(
+            "torrent-peer-options",
+            Some(120),
+            Some("2M".to_string()),
+        )
+        .await
+        .unwrap();
+    assert_eq!(spawner.torrent_peer_options_calls.load(Ordering::SeqCst), 1);
+    assert_eq!(
+        spawner.last_torrent_peer_options.lock().unwrap().as_ref(),
+        Some(&(120, "2M".to_string()))
+    );
+    manager
+        .set_aria2_torrent_peer_options("torrent-peer-options", None, None)
+        .await
+        .unwrap();
+    assert_eq!(spawner.torrent_peer_options_calls.load(Ordering::SeqCst), 2);
+    assert_eq!(
+        spawner.last_torrent_peer_options.lock().unwrap().as_ref(),
+        Some(&(55, "50K".to_string()))
+    );
+    manager.clear_aria2_retry_state("torrent-peer-options").await;
+    manager.forget_aria2_gid("torrent-peer-options").await;
+    manager.release_permit("torrent-peer-options").await;
+    manager.release_registered_id("torrent-peer-options").await;
+    dispatcher.abort();
+}
+
+#[tokio::test]
+async fn live_torrent_peer_options_reject_invalid_values_and_stale_gid() {
+    let (manager, spawner) = make_manager(1);
+    let manager = Arc::new(manager);
+    let mut task = aria2_task("torrent-peer-options-stale");
+    task.payload.is_torrent = true;
+    manager.push(task).await.unwrap();
+    let dispatcher = {
+        let manager = Arc::clone(&manager);
+        tokio::spawn(async move { manager.run_dispatcher().await })
+    };
+    timeout(Duration::from_secs(1), async {
+        loop {
+            if manager
+                .aria2_gid_for_download("torrent-peer-options-stale")
+                .is_some()
+            {
+                break;
+            }
+            tokio::time::sleep(Duration::from_millis(10)).await;
+        }
+    })
+    .await
+    .expect("aria2 dispatch should register a Torrent gid");
+
+    assert!(manager
+        .set_aria2_torrent_peer_options(
+            "torrent-peer-options-stale",
+            Some(1001),
+            Some("2M".to_string()),
+        )
+        .await
+        .is_err());
+    assert!(manager
+        .set_aria2_torrent_peer_options(
+            "torrent-peer-options-stale",
+            Some(100),
+            Some("not-a-rate".to_string()),
+        )
+        .await
+        .is_err());
+    assert_eq!(spawner.torrent_peer_options_calls.load(Ordering::SeqCst), 0);
+
+    spawner
+        .block_torrent_peer_options
+        .store(true, std::sync::atomic::Ordering::SeqCst);
+    let started = spawner.torrent_peer_options_started.notified();
+    let setter = {
+        let manager = Arc::clone(&manager);
+        tokio::spawn(async move {
+            manager
+                .set_aria2_torrent_peer_options(
+                    "torrent-peer-options-stale",
+                    Some(100),
+                    Some("2M".to_string()),
+                )
+                .await
+        })
+    };
+    timeout(Duration::from_secs(1), started)
+        .await
+        .expect("Torrent peer options RPC should start");
+
+    manager
+        .remember_gid(
+            "torrent-peer-options-stale".to_string(),
+            "gid-replaced".to_string(),
+        )
+        .await;
+    spawner.torrent_peer_options_release.notify_one();
+    assert!(setter.await.unwrap().is_err());
+
+    manager.clear_aria2_retry_state("torrent-peer-options-stale").await;
+    manager.forget_aria2_gid("torrent-peer-options-stale").await;
+    manager.release_permit("torrent-peer-options-stale").await;
+    manager.release_registered_id("torrent-peer-options-stale").await;
+    dispatcher.abort();
+}
+
 #[tokio::test]
 async fn retry_readds_aria2_with_the_latest_live_speed_limit() {
     use firelink_lib::queue::PendingOutcome;
@@ -605,6 +1089,80 @@ async fn retry_readds_aria2_with_the_latest_live_speed_limit() {
     dispatcher.abort();
 }
 
+#[tokio::test]
+async fn retry_readds_torrent_with_the_latest_live_peer_options() {
+    use firelink_lib::queue::PendingOutcome;
+
+    let (mgr, spawner) = make_manager(1);
+    let manager = Arc::new(mgr);
+    let mut task = aria2_task("peer-options-retry");
+    task.payload.is_torrent = true;
+    task.payload.max_tries = Some(1);
+    task.payload.torrent_max_peers = Some(120);
+    task.payload.torrent_peer_speed_limit = Some("1M".to_string());
+    manager.push(task).await.unwrap();
+    let dispatcher = {
+        let manager = Arc::clone(&manager);
+        tokio::spawn(async move { manager.run_dispatcher().await })
+    };
+
+    timeout(Duration::from_secs(1), async {
+        loop {
+            if spawner.add_uri_calls.load(Ordering::SeqCst) >= 1 {
+                break;
+            }
+            tokio::time::sleep(Duration::from_millis(10)).await;
+        }
+    })
+    .await
+    .expect("initial Torrent add should run");
+
+    manager
+        .handle_aria2_event(
+            "gid-1",
+            PendingOutcome::Error(
+                "aria2 error code 1: Failed to receive data, cause: protocol error".to_string(),
+            ),
+        )
+        .await;
+    manager
+        .set_aria2_torrent_peer_options(
+            "peer-options-retry",
+            Some(240),
+            Some("2M".to_string()),
+        )
+        .await
+        .unwrap();
+
+    timeout(Duration::from_secs(4), async {
+        loop {
+            if spawner.add_uri_calls.load(Ordering::SeqCst) >= 2 {
+                break;
+            }
+            tokio::time::sleep(Duration::from_millis(25)).await;
+        }
+    })
+    .await
+    .expect("Torrent retry should re-add after backoff");
+    assert_eq!(
+        spawner.add_peer_options.lock().unwrap().as_slice(),
+        &[
+            (Some(120), Some("1M".to_string())),
+            (Some(240), Some("2M".to_string()))
+        ]
+    );
+
+    manager
+        .clear_aria2_retry_state("peer-options-retry")
+        .await;
+    manager
+        .forget_aria2_gid("peer-options-retry")
+        .await;
+    manager.release_permit("peer-options-retry").await;
+    manager.release_registered_id("peer-options-retry").await;
+    dispatcher.abort();
+}
+
 #[tokio::test]
 async fn stale_aria2_permit_candidate_cannot_replace_current_permit() {
     let (mgr, _spawner) = make_manager(2);
@@ -1243,12 +1801,16 @@ async fn duplicate_pending_id_cannot_replace_an_existing_queue_ownership() {
     assert!(manager
         .ensure_aria2_permit_for_queue("duplicate", "queue-b")
         .await);
-    manager
+    let previous = manager
         .reserve_enqueue_generation("duplicate", 1)
         .await
         .unwrap();
     manager
-        .commit_reserved_enqueue(aria2_task_in_queue("duplicate", "queue-a"), 1)
+        .commit_reserved_enqueue(
+            aria2_task_in_queue("duplicate", "queue-a"),
+            1,
+            previous,
+        )
         .await
         .unwrap();
 
@@ -1347,6 +1909,7 @@ async fn media_terminal_error_emits_failed_without_completed() {
 
     tokio::time::sleep(Duration::from_millis(100)).await;
     let statuses = emitted_statuses(&event_rx);
+    assert!(statuses.iter().any(|status| status == "downloading"));
     assert!(statuses.iter().any(|status| status == "failed"));
     assert!(!statuses.iter().any(|status| status == "completed"));
     assert_eq!(manager.available_permits(), 1);
@@ -1406,6 +1969,62 @@ async fn aria2_permit_survives_rpc_return() {
     handle.abort();
 }
 
+#[tokio::test]
+async fn aria2_does_not_emit_downloading_before_gid_mapping() {
+    let app = mock_builder()
+        .build(mock_context(noop_assets()))
+        .expect("mock app");
+    let (gid_started_tx, gid_started_rx) = tokio::sync::oneshot::channel();
+    let spawner = Arc::new(DelayedAria2Spawner::new(gid_started_tx));
+    let (event_tx, event_rx) = std::sync::mpsc::channel();
+    app.handle().listen("download-state", move |event| {
+        let _ = event_tx.send(event.payload().to_string());
+    });
+    let manager = Arc::new(QueueManager::test_new(app.handle().clone(), 1, spawner));
+    manager.push(aria2_task("delayed-start")).await.unwrap();
+
+    let dispatcher = {
+        let manager = Arc::clone(&manager);
+        tokio::spawn(async move { manager.run_dispatcher().await })
+    };
+
+    gid_started_rx
+        .await
+        .expect("add_uri should begin before the delayed GID is returned");
+    let early_statuses = emitted_statuses(&event_rx);
+    assert!(
+        !early_statuses.iter().any(|status| status == "downloading"),
+        "a queued task must not be reported as downloading before its GID is mapped"
+    );
+
+    timeout(Duration::from_secs(1), async {
+        loop {
+            if manager.aria2_gid_for_download("delayed-start").is_some() {
+                break;
+            }
+            tokio::task::yield_now().await;
+        }
+    })
+    .await
+    .expect("the delayed GID should eventually be mapped");
+    timeout(Duration::from_secs(1), async {
+        loop {
+            if emitted_statuses(&event_rx)
+                .iter()
+                .any(|status| status == "downloading")
+            {
+                break;
+            }
+            tokio::task::yield_now().await;
+        }
+    })
+    .await
+    .expect("the transfer should become downloading only after its GID is owned");
+
+    manager.release_permit("delayed-start").await;
+    dispatcher.abort();
+}
+
 #[tokio::test]
 async fn failed_refresh_that_leaves_gid_paused_releases_permit_but_keeps_resume_mapping() {
     let app = mock_builder()
@@ -1677,6 +2296,93 @@ async fn transient_aria2_error_reissues_after_backoff() {
     dispatcher.abort();
 }
 
+#[tokio::test]
+async fn resolver_failure_uses_one_system_fallback_without_retry_budget() {
+    use firelink_lib::queue::PendingOutcome;
+
+    let (mgr, spawner) = make_manager(1);
+    let manager = Arc::new(mgr);
+    manager.set_aria2_async_dns_supported(true);
+    let mut task = aria2_task("resolver-fallback");
+    task.payload.max_tries = Some(0);
+    task.payload.headers = Some("X-Test: retained".to_string());
+    task.payload.proxy = Some("http://127.0.0.1:8123".to_string());
+    manager.push(task).await.unwrap();
+
+    let dispatcher = {
+        let manager = Arc::clone(&manager);
+        tokio::spawn(async move { manager.run_dispatcher().await })
+    };
+    timeout(Duration::from_secs(1), async {
+        loop {
+            if spawner.add_uri_calls.load(Ordering::SeqCst) >= 1 {
+                break;
+            }
+            tokio::time::sleep(Duration::from_millis(10)).await;
+        }
+    })
+    .await
+    .expect("initial transfer should be admitted");
+
+    let resolver_error = PendingOutcome::Error(
+        "aria2 error code 19: Name resolution failed: Could not contact DNS servers".to_string(),
+    );
+    manager
+        .handle_aria2_event("gid-1", resolver_error.clone())
+        .await;
+    manager.handle_aria2_event("gid-1", resolver_error).await;
+
+    timeout(Duration::from_secs(4), async {
+        loop {
+            if spawner.add_uri_calls.load(Ordering::SeqCst) >= 2 {
+                break;
+            }
+            tokio::time::sleep(Duration::from_millis(25)).await;
+        }
+    })
+    .await
+    .expect("resolver failure should re-add once with the system resolver");
+    assert_eq!(
+        *spawner.add_resolver_modes.lock().unwrap(),
+        vec![Aria2ResolverMode::Automatic, Aria2ResolverMode::System]
+    );
+    assert_eq!(
+        *spawner.add_transfer_context.lock().unwrap(),
+        vec![
+            (
+                Aria2ResolverMode::Automatic,
+                Some("X-Test: retained".to_string()),
+                Some("http://127.0.0.1:8123".to_string()),
+                None,
+            ),
+            (
+                Aria2ResolverMode::System,
+                Some("X-Test: retained".to_string()),
+                Some("http://127.0.0.1:8123".to_string()),
+                None,
+            ),
+        ]
+    );
+    assert_eq!(spawner.add_uri_calls.load(Ordering::SeqCst), 2);
+
+    // A second resolver failure is now on the system mode. With max_tries=0
+    // it must terminate instead of switching back or consuming another add.
+    manager
+        .handle_aria2_event(
+            "gid-2",
+            PendingOutcome::Error(
+                "aria2 error code 19: Name resolution failed: Could not contact DNS servers"
+                    .to_string(),
+            ),
+        )
+        .await;
+    assert_eq!(spawner.add_uri_calls.load(Ordering::SeqCst), 2);
+    assert!(manager.aria2_gid_for_download("resolver-fallback").is_none());
+    assert_eq!(manager.available_permits(), 1);
+
+    dispatcher.abort();
+}
+
 #[tokio::test]
 async fn duplicate_transient_events_schedule_only_one_retry_worker() {
     use firelink_lib::queue::PendingOutcome;
@@ -2043,7 +2749,9 @@ async fn late_aria2_gid_after_cancellation_is_removed_without_leaking_permit() {
     manager.release_registered_id("late").await;
     manager.release_permit("late").await;
 
-    tokio::time::sleep(Duration::from_millis(100)).await;
+    timeout(Duration::from_secs(1), manager.wait_for_aria2_dispatch("late"))
+        .await
+        .expect("late dispatch must be fully removed before it is considered finished");
 
     assert!(manager.aria2_gid_for_download("late").is_none());
     assert_eq!(manager.available_permits(), 1);

src-tauri/tests/torrent_cache.rs

@@ -0,0 +1,61 @@
+use firelink_lib::torrent::{
+    cache_torrent_info_hash_at, parse_torrent_bytes, read_cached_torrent_by_info_hash_at,
+};
+use tempfile::tempdir;
+
+#[tokio::test]
+async fn canonical_cache_round_trip_rejects_invalid_bytes_and_source_metadata() {
+    let directory = tempdir().expect("temporary directory should be created");
+    let root = directory.path().join("torrents");
+    let bytes = b"d4:infod6:lengthi5e4:name4:testee";
+    let parsed = parse_torrent_bytes(bytes).expect("test torrent should parse");
+
+    let path = cache_torrent_info_hash_at(&root, bytes)
+        .await
+        .expect("canonical cache write should succeed")
+        .expect("canonical cache path should be returned");
+    let path = std::path::PathBuf::from(path);
+    assert_eq!(
+        read_cached_torrent_by_info_hash_at(&root, &parsed.info_hash)
+            .await
+            .expect("canonical cache read should succeed"),
+        Some(bytes.to_vec())
+    );
+
+    tokio::fs::write(&path, b"not a torrent")
+        .await
+        .expect("invalid cache fixture should be writable");
+    assert!(
+        read_cached_torrent_by_info_hash_at(&root, &parsed.info_hash)
+            .await
+            .expect("invalid cache should be handled")
+            .is_none()
+    );
+    assert!(!path.exists());
+
+    let tracker_bytes =
+        b"d8:announce32:https://tracker.example/announce4:infod6:lengthi5e4:name4:testee";
+    let tracker_hash = parse_torrent_bytes(tracker_bytes)
+        .expect("tracker-bearing torrent should parse")
+        .info_hash;
+    let tracker_path = cache_torrent_info_hash_at(&root, tracker_bytes)
+        .await
+        .expect("tracker metadata should be reusable")
+        .expect("tracker cache path should be returned");
+    let tracker_path = std::path::PathBuf::from(tracker_path);
+    assert_eq!(
+        read_cached_torrent_by_info_hash_at(&root, &tracker_hash)
+            .await
+            .expect("tracker cache should be readable"),
+        Some(tracker_bytes.to_vec())
+    );
+    assert!(cache_torrent_info_hash_at(
+        &root,
+        b"d4:infod6:lengthi5e4:name4:teste8:url-list22:https://example.test/ae"
+    )
+    .await
+    .expect("web-seed metadata should be handled")
+    .is_none());
+
+    let _ = tokio::fs::remove_file(&tracker_path).await;
+}

src-tauri/tests/torrent_rpc.rs

@@ -0,0 +1,96 @@
+use axum::{extract::Json, http::StatusCode, response::IntoResponse, routing::post, Router};
+use firelink_lib::rpc_call;
+use serde_json::{json, Value};
+use std::net::SocketAddr;
+use tokio::sync::oneshot;
+
+async fn start_server(
+    app: Router,
+) -> (SocketAddr, oneshot::Sender<()>, tokio::task::JoinHandle<()>) {
+    let listener = tokio::net::TcpListener::bind(("127.0.0.1", 0))
+        .await
+        .expect("RPC test server should bind");
+    let address = listener
+        .local_addr()
+        .expect("RPC test server should have an address");
+    let (shutdown, shutdown_signal) = oneshot::channel();
+    let task = tokio::spawn(async move {
+        axum::serve(listener, app)
+            .with_graceful_shutdown(async {
+                let _ = shutdown_signal.await;
+            })
+            .await
+            .expect("RPC test server should stop cleanly");
+    });
+    (address, shutdown, task)
+}
+
+struct TestResponse(StatusCode, Value);
+
+impl IntoResponse for TestResponse {
+    fn into_response(self) -> axum::response::Response {
+        (self.0, Json(self.1)).into_response()
+    }
+}
+
+async fn successful_rpc(Json(request): Json<Value>) -> TestResponse {
+    assert_eq!(request.get("jsonrpc"), Some(&json!("2.0")));
+    assert_eq!(request.get("id"), Some(&json!("1")));
+    assert_eq!(request.get("method"), Some(&json!("aria2.getVersion")));
+    assert_eq!(
+        request.get("params"),
+        Some(&json!(["token:test-secret", {"include": "version"}]))
+    );
+    TestResponse(
+        StatusCode::OK,
+        json!({"jsonrpc": "2.0", "id": "1", "result": {"version": "test"}}),
+    )
+}
+
+async fn gateway_error(Json(_request): Json<Value>) -> TestResponse {
+    TestResponse(
+        StatusCode::BAD_GATEWAY,
+        json!({"jsonrpc": "2.0", "id": "1", "error": {"code": 1, "message": "backend unavailable"}}),
+    )
+}
+
+async fn stop_server(shutdown: oneshot::Sender<()>, task: tokio::task::JoinHandle<()>) {
+    let _ = shutdown.send(());
+    task.await.expect("RPC test server task should join");
+}
+
+#[tokio::test]
+async fn production_rpc_client_sends_authenticated_json_rpc() {
+    let app = Router::new().route("/jsonrpc", post(successful_rpc));
+    let (address, shutdown, task) = start_server(app).await;
+    let result = rpc_call(
+        address.port(),
+        "test-secret",
+        "aria2.getVersion",
+        json!([{"include": "version"}]),
+    )
+    .await
+    .expect("successful RPC response should decode");
+
+    assert_eq!(result, json!({"version": "test"}));
+    stop_server(shutdown, task).await;
+}
+
+#[tokio::test]
+async fn production_rpc_client_preserves_http_gateway_context() {
+    let app = Router::new().route("/jsonrpc", post(gateway_error));
+    let (address, shutdown, task) = start_server(app).await;
+    let error = rpc_call(address.port(), "test-secret", "aria2.getVersion", json!([]))
+        .await
+        .expect_err("gateway response should fail");
+
+    assert!(
+        error.contains("HTTP 502 Bad Gateway"),
+        "unexpected error: {error}"
+    );
+    assert!(
+        error.contains("backend unavailable"),
+        "unexpected error: {error}"
+    );
+    stop_server(shutdown, task).await;
+}

src-tauri/tests/torrent_web_seed.rs

@@ -0,0 +1,68 @@
+use firelink_lib::ipc::{TorrentFile, TorrentWebSeed};
+use firelink_lib::queue::{expand_torrent_web_seeds, normalize_torrent_web_seeds};
+
+#[test]
+fn web_seed_normalization_preserves_one_based_file_ownership() {
+    let files = vec![
+        TorrentFile {
+            index: 1,
+            path: "one.bin".to_string(),
+            length: 1,
+        },
+        TorrentFile {
+            index: 2,
+            path: "nested/two.bin".to_string(),
+            length: 2,
+        },
+    ];
+    let seeds = vec![
+        TorrentWebSeed {
+            file_index: 2,
+            uri: " https://cdn.example/assets/ ".to_string(),
+        },
+        TorrentWebSeed {
+            file_index: 1,
+            uri: "https://cdn.example/one".to_string(),
+        },
+        TorrentWebSeed {
+            file_index: 2,
+            uri: "https://cdn.example/assets/".to_string(),
+        },
+    ];
+
+    let normalized = normalize_torrent_web_seeds(Some(&seeds), &files)
+        .expect("valid web seeds should normalize");
+    assert_eq!(normalized.len(), 2);
+    assert_eq!(normalized[0].file_index, 2);
+    assert_eq!(normalized[1].file_index, 1);
+    assert_eq!(
+        expand_torrent_web_seeds(&normalized, &files).expect("web seeds should expand"),
+        vec![
+            (2, "https://cdn.example/assets/nested/two.bin".to_string()),
+            (1, "https://cdn.example/one/one.bin".to_string()),
+        ]
+    );
+
+    for uri in [
+        "ftp://cdn.example/file",
+        "https://user:pass@cdn.example/file",
+        "https://cdn.example/file#fragment",
+    ] {
+        assert!(normalize_torrent_web_seeds(
+            Some(&[TorrentWebSeed {
+                file_index: 1,
+                uri: uri.to_string()
+            }]),
+            &files,
+        )
+        .is_err());
+    }
+    assert!(normalize_torrent_web_seeds(
+        Some(&[TorrentWebSeed {
+            file_index: 0,
+            uri: "https://cdn.example/file".to_string()
+        }]),
+        &files,
+    )
+    .is_err());
+}