chore(release): bump version to 1.2.9 + tag notes

Quiet Polish: QConnect cleanup (#316) and a long round of Linux
tray polish. Sticky-header gap fix (no more padding-top on scroll
containers), Edit folder shortcut from the playlist sidebar (#364),
shift-range + Ctrl/Cmd+A multi-select across the remaining views,
opt-in resume of seek position (#317), and Qobuz subtitle/edition
propagated through queue / MPRIS / scrobbling (#360).

Bumped:
- src-tauri/Cargo.toml + Cargo.lock
- src-tauri/tauri.conf.json
- package.json + package-lock.json
- snapcraft.yaml (version + source-tag)
- packaging/flatpak/com.blitzfc.qbz.metainfo.xml (new release entry)

packaging/snap/snapcraft.yaml is a symlink to the root snapcraft.yaml
so it tracks automatically.

cc

docs/release-1.2.9/TAG_DETAILS.md

@@ -0,0 +1,65 @@
+# 1.2.9 — Quiet Polish (QConnect cleanup + tray for everyone)
+
+Two main threads of work since 1.2.8: splitting the single-file
+QConnect service into a proper module so the History duplicates and
+missing-tracks regression could finally be untangled, and a long
+overdue round of tray polish on Linux. Details on each below.
+
+A handful of smaller fixes and conveniences round it out: sticky
+headers no longer leave a gap at the titlebar, an Edit folder
+shortcut finally lives in the playlist sidebar context menu, and
+shift-range + Ctrl/Cmd+A multi-select now reaches the remaining
+views.
+
+If you're upgrading from 1.2.4 or earlier, everything from 1.2.5
+through 1.2.8 (Accolade Watch + Mixtapes & Collections) is still in
+here.
+
+---
+
+## QConnect (#316)
+
+  - **Service split into a module** — `qconnect_service.rs` is now twelve focused files (transport, session, queue resolution, CoreBridge bridging, event sink, track loading, types, commands, tests…)
+  - **History duplicates + gaps fixed** — cursor-align skipped when local is the active renderer; `set_queue` remaps history by track id instead of clearing it on every echoed reorder
+  - **First-track hiccup, prev/next bouncing, shuffle drift** — single pass through the cursor-resolution path
+
+---
+
+## Linux tray
+
+  - **Live tooltip** — track title / "by Artist" / album on hover, plus inline hints (Middle-click to pause, Scroll to adjust volume) that flip with state
+  - **Middle-click + scroll wired** — middle-click toggles play/pause and vertical scroll adjusts volume in 5 % steps, mirroring the Plasma media plasmoid
+  - **Icon variant picker** — Auto / Mono light / Mono dark / Color dropdown in Settings → Appearance → System Tray, for desktops where auto-detection picks the wrong glyph (e.g. GNOME's permanently dark top bar)
+  - **Updates from a dedicated thread** — ksni 0.3's blocking handle panics from a tokio context; the new worker thread sidesteps that entirely
+
+---
+
+## UI polish
+
+  - **Sticky headers pin flush** — the gap that opened at the titlebar was caused by `padding-top` on the scroll container shifting the scrollport's inset edge; padding moved onto the first child instead
+  - **Edit folder from the sidebar** (#364) — playlist-folder right-click menu opens the folder editor; pencil button mirrored on the Playlist Manager breadcrumb
+  - **Multi-select** — shift-click range + Ctrl/Cmd+A across the remaining views; `BulkActionBar` floats above the player and docks at list end via IntersectionObserver
+  - **Stop-after / remove-after** — queue context menu gets a one-shot stop marker and a tail-drop from a pivot
+  - **Stratego theme** — imperial crimson + bone white with AAA contrast on every text level
+
+---
+
+## Streaming & playback
+
+  - **Track version** (#360) — Qobuz's subtitle/edition flows through queue builders, MPRIS, immersive views, and the Last.fm + ListenBrainz scrobble payload
+  - **Session resume position** (#317) — opt-in restore of the seek position on next launch
+  - **Gapless one-shot guard** — prefetch-attempted bit now gates the gapless transition so a stray late-cancel can't trip the next-track hand-off
+  - **Audio enumeration** — virtual ALSA PCMs are skipped during the CPAL probe; libasound's verbose enumeration errors route to `log::debug`
+
+---
+
+## Internal
+
+  - **Legacy V2 wrappers removed** — library, network, offline_cache, reco, cast/dlna and api_server playback no longer carry placeholder commands that just delegated to V2
+  - **Mixtape shuffle internals** — `shuffle` module with normalize + token_set_ratio, `dedup_by_similarity`, `hybrid_sample` with per-album cap; new `v2_collection_unique_track_count` / `v2_collection_shuffle_tracks` commands
+  - **x86 baseline relaxed** — release builds drop the x86-64-v3 baseline so pre-Haswell CPUs no longer SIGILL on launch
+  - **Dependency bumps** — typescript 6.0.3, ashpd 0.13.10, notify-rust 4.16.0, rustls-webpki 0.103.13, plus the usual minor/patch swarm
+
+---
+
+Full changelog: https://github.com/vicrodh/qbz/compare/v1.2.8...v1.2.9