User feedback: 'naj ne začne takoj predvajati. naj začne ko pritisnem
Enter, in pozicija naj ostane črta ker bomo tja dali tracker'
Changes:
- Click on waveform: just seek + render playhead (was: seek + auto-play)
- Click on segment row: just seek + render playhead (was: seek + auto-play)
- Playhead: brighter, with triangle marker on top (tracker placeholder)
- Enter key: play/pause toggle from current position
- Space key: also play/pause (back-compat)
- Hint texts updated to reflect new workflow
Workflow now:
1. Click on waveform/segment → playhead jumps there (no sound)
2. Read transcript, look at waveform around the position
3. Press Enter → plays from there
4. Press Enter again → pauses
5. Click somewhere else → playhead moves there (paused)
6. Press Enter → plays from new position
Allows precise positioning before commit to playback.