feat(app): track-header toggles, effect library, panel titles (design parity)

- track headers: name + visible/mute/lock toggles, undoable through
  graphops, honored by the montage (muted tracks are skipped) and by
  the edit guards (locked tracks reject trims/moves/deletes)
- project explorer gains a panel title row; the tree/icons toggle is
  now small icon buttons with tooltips
- new effect library dock panel (every addable effect; double-click
  appends to the selected clip's chain)
- screenshots refreshed (zh/en, window/manager/preferences)
This commit is contained in:
2026-08-17 01:37:31 +08:00
parent c5f1d0d76c
commit 21cc2fba24
15 changed files with 749 additions and 9 deletions
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