[Marc-André Moreau (mamoreau-devolutions)]

Summary

• Port the shared editor and capture workflows to Linux: XDG portal/PipeWire screenshots and recording, clipboard/OCR, library organization, templates/effects, video editing/export, preferences, shortcuts, tray/startup, notifications, sharing, and printing.
• Isolate platform implementations in app/src/linux/ and app/src/win/, with suffix-free filenames and thin dispatch. Shared canvas/document code remains shared. Windows capture backends live in crates/jiffshot-capture/src/win/, with existing public APIs preserved.
• Build .tar.gz, .deb, and .rpm for both Linux x64 and ARM64. Detect architecture from the executable and every bundled runtime ELF; reject mixed/unsupported inputs and relabeling. Release assembly requires and verifies all six packages.
• Use native Ubuntu/Fedora x64/ARM64 CI builds, per-architecture caches/artifacts, package-content tests, and native install/smoke checks. Fedora builds RPMs separately for its OCR-library ABI and explicitly installs verified media, PipeWire, English OCR and font providers.
• Preserve upstream Windows recorder, packaging, automation CLI and tray/library behavior; add Linux named presets and Source/15/24/30/60 fps recording choices.
• Share real AAC encoder selection across recording and video editing: prefer voaacenc, support Fedora fdkaacenc, preserve AAC-LC/raw framing and 128 kbit/s, and surface capability/creation errors without aliases or silent fallback. Count actual source samples, retain codec packets and finalize MP4 presentation edits to exclude priming/padding. Preserve source tails, continuous segment encoding and presentation-time offsets across edits.
• Support Fedora DejaVu font locations in shared document rendering, which reads font files directly rather than through Fontconfig.
• Fix CI-exposed portable-startup parsing and interval-test coordinate races while retaining GLib, portal-closure and mutual-exclusion assertions.
• Replace every Python script added by this branch with PowerShell 7: all 18 Linux GUI e2e drivers and the frame-rate portal runner (shared LinuxE2E modules over a C# shim using a SHA256-pinned Tmds.DBus.Protocol), the packaging/assembly/validation scripts, and Pester unit tests. CI installs a pinned, hash-verified pwsh via .github/actions/setup-pwsh and no longer installs python3-dbus-next/python3-gi.

Validation

• After platform isolation: Linux release workspace tests passed (305 passed, 17 portal-dependent cases ignored by default); Windows release workspace tests passed (160 passed, 3 ignored).
• Native run 41217762263 at a14a984: complete Ubuntu x64 and ARM64 jobs passed, including GUI, tar/DEB content checks and portable smoke. Windows x64/ARM64 and MSI/MSIX jobs passed. Both Fedora jobs reached runtime tests but failed three AAC timing and three font-dependent cases; package-install rows were consequently skipped.
• Those failures are repaired at 5f4fb47. Both real VisualOn and private upstream FDK encoders pass 13 AAC, 39 video and 6 recording-pipeline tests each locally (116 targeted executions, no failures/skips). FDK execution was on Ubuntu x64/GStreamer 1.24.2, not native Fedora or ARM. Exact duration, waveform alignment, source boundaries/tails, repeated-edit sync and byte-preserving MP4 edits are tested; duration assertions were strengthened, not widened.
• Font tests pass on Linux and existing Windows text rendering remains passing. Seven capture-info tests and full_document_recognition_drives_conservative_smart_redaction pass locally.
• Strict Linux app Clippy, scoped formatting and whitespace checks pass. Windows capture API documentation builds; additional Windows strict Clippy reports pre-existing lints in unchanged/mechanically moved upstream code, not newly silenced warnings.
• Private-WSL GUI: 5 frame-rate cases, all 4 login-startup scenarios and the repaired interval suite passed. test_mock_recording_cancel_closes_portal_session verifies the labelled control closes the recording portal session without requesting another source.
• After the PowerShell conversion, native run 41229866234 at d5ec759 passed all 14 jobs: Ubuntu x64/ARM64 build, all GUI e2e drivers, Pester package tests and portable smoke; Fedora x64/ARM64 RPM builds; DEB/RPM install on x64 and ARM64; Windows x64/ARM64 and MSI/MSIX. This includes the interval-cancel and ARM64 autostart cases that failed in 41221973567.
• Locally, all 18 pwsh drivers pass in private-namespace WSL, and 110 Pester tests pass. pwsh -File returns exit 1 when a driver throws. assemble-release.ps1 verified all six downloaded CI packages, then refused with exit 1 and no output when one RPM artifact was missing.
• Earlier real frame-rate portal tests passed 3 cases; earlier Ubuntu/Fedora clean-install and broader GUI/preset suites passed. Old real-portal/Fedora local temporary rootfs fixtures no longer exist and were not claimed as rerun for this update.

Requirement	Evidence
Exact audible AAC count and alignment	selected_encoder_negotiates_lc_stereo_and_decodes_a_resampled_tone: 47,999 actual resampled frames equal decoded frames, contiguous timestamps and waveform correlation >0.98
Exact trim/cut duration	trimming_preserves_the_corresponding_audio_from_each_source_interval: 72,000 frames; cutting_preserves_audio_before_and_after_the_removed_range: 96,000 frames, with short source-boundary tone checks
Source tail and repeated-edit sync	source_tone_boundaries_and_end_survive_aac_segment_changes; repeated_trimming_keeps_source_tone_boundaries_without_accumulating_aac_delay
Preserve compressed media and reject invalid timing	finalization_retains_every_compressed_byte_and_file_offset; malformed_or_unsupported_timing_preserves_the_entire_file
Visible document text and OCR	linux_system_fonts_render_default_and_dejavu_text; interactive_effects_capture_info_band_preserves_content_and_undoes; interactive_effects_capture_info_rejects_narrow_images_without_changing_document; full_document_recognition_drives_conservative_smart_redaction

Limitations

• Broad Linux parity, not every Windows feature: advanced scheduling/recording/editor gaps remain documented.
• jiffshot-cli automation is Windows-only; Linux retains jiffshot capture options. The Windows workflow engine remains in jiffshot-workflow, with Linux workflows under app/src/linux/.
• The unpublished macOS branch was unavailable to inspect. Organization follows the user's screenshot, not an asserted exact merge with unseen macOS changes.
• Native GNOME/KDE consent/global shortcuts and physical audio/webcam/printer hardware remain unvalidated. WSL portal fixtures used virtual sources.
• Real-portal modes of the frame-rate, shortcut and timed-capture drivers (-RealPortal) were ported but not run; they need a real desktop portal. The PowerShell frame-rate timed portal is a plain mock, and saved images are checked with the shared PNG decoder rather than GStreamer.