chore(release): bump version to 1.2.5 "Accolade Watch"

* src-tauri/Cargo.toml and Cargo.lock: 1.2.4 -> 1.2.5
  * src-tauri/tauri.conf.json: 1.2.4 -> 1.2.5
  * package.json (+ package-lock.json regenerated): 1.2.4 -> 1.2.5
  * snapcraft.yaml: 1.2.4 -> 1.2.5
  * packaging/flatpak/com.blitzfc.qbz.metainfo.xml: new <release> entry
    dated 2026-04-15 covering the visual refresh (new logo + login
    branding), Plasma/Klassy auto-detect for window controls,
    opt-in match-system-chrome rounded corners, Editor's Picks
    ribbon cleanup, the two sidebar menu positioning fixes shipped
    alongside this bump, and the DAC wizard contrast fix.

Tag not applied per request — release notes are staged, ready for
the screenshots pass and manual tag afterward.

cc

snapcraft.yaml

@@ -3,7 +3,7 @@
 
 name: qbz-player
 title: "QBZ — Native Qobuz Client for Linux"
-version: '1.2.4'
+version: '1.2.5'
 summary: Native Qobuz player for Linux with bit-perfect audio and DAC control
 description: |
   QBZ is a native Linux desktop client for Qobuz™, designed for high-fidelity playback.