Compact native playback controls into one strip

[debpalash]

Changes

• Combine transport, filename and track controls into one 40-point strip below the thin seek band.
• Use measured UTF-8 ellipsis and prevent title minimum-width feedback when resizing.
• Consolidate subtitle track, language and online search actions behind one CC control.
• Move picture, framing, device, chapter, transfer details, limits and confirmed deletion into More; preserve narrow-view navigation and fullscreen access.
• Remove the duplicate active-torrent activity strip and reduce the fixed backdrop height.
• Keep scroll-wheel seeking within the actual scrubber and keep subtitle and secondary panels anchored to their CC and More triggers during resizing.

Verification

• Native build and integrated Zig unit gate pass.
• Feature gate: 477 passed, zero failures/warnings, 14 skipped using an isolated database.
• Focused footer regression tests: 22 passed.
• Source regressions cover action retention, shared height, title width feedback and subtitle anchors.

Native pixel and interaction review remains unverified because screen capture access is disabled. Existing user processes and configurations were preserved.