OnMic — what's new

- Standard Apply now works track-by-track: cut one camera track, assign that
  track's visibility, then move to the next camera track. This keeps the normal
  non-destructive timeline and still never cuts mic/audio tracks.
- On simple full-length camera tracks, Apply now tests a safe batch visibility
  command. It only uses it after clearing selection and confirming that exactly
  the intended video clips are selected; otherwise it falls back to direct clip
  visibility.
- Preview now caches the finished cut plan for the same sequence, mic files,
  camera tags, and edit settings. Re-running Preview with no changes can skip
  rebuilding the same cuts.

- Sign out now uses an OnMic-styled confirmation inside the panel instead of
  the browser's default "JavaScript Confirm" window with the local file path in
  the title.

- Clicking Sign out now asks for confirmation first, so an accidental click
  does not immediately remove the saved account access from this computer.
- Wide-shot Frequency "Low" is a small step more active than v0.60. It should
  use the wide shot a little more often while still staying lighter than Medium.

- Removed the v0.59 base-layer Apply shortcut from the next test build. Ari's
  real 47-minute log showed it skipped only 10 cuts and 6 visibility flips, so it
  was not worth keeping as a speed strategy.
- Preview now saves AI voice-detection masks to a per-user OnMic cache. Re-running
  Preview on the same mic file/channel/gain/timing can reuse the saved voice
  detection even after Premiere is closed and reopened.
- Standard Apply's fast visibility path now hides clips from right-to-left, so we
  can test whether visibility changes benefit from the same direction that helped
  razoring.
- Flatten/Fast Apply now caches simple full-length source camera clips, restores
  source clip in/out once at the end instead of after every placed segment, and
  logs timing so its speed can be compared with Standard Apply.
- Apply now logs any Premiere edit-command IDs it can find as diagnostics only.
  OnMic still uses the safe per-video-track razor path by default.

- Standard Apply can now skip the bottom camera track on simple full-length
  podcast timelines. If all camera tracks are clean full-length clips, OnMic
  leaves the lowest camera track on underneath the others and only switches the
  upper camera tracks. The picture is the same for normal full-frame camera
  layers, but it avoids a large number of cuts and visibility flips.
- The Apply log now says when this base-layer optimization is active and how
  many cuts/visibility flips it skipped, so long-episode speed tests are easier
  to compare.
- Wide-shot Frequency "Low" is now slightly more active. It should use the wide
  shot a bit more often than v0.58, while still staying lighter than Medium.

- Standard Apply still uses the non-destructive camera-track switching model, but
  its visibility assignment is faster on simple podcast timelines. When each
  camera track is one clean clip that matches the analyzed range, OnMic now hides
  only the camera pieces that need to be hidden instead of scanning and checking
  every piece after the razors are done. More complex timelines automatically
  fall back to the older safer scan.
- Standard Apply now cuts one camera track at a time, newest-to-oldest inside
  that track, instead of hopping between V1/V2/V3/V4 for every cut. The result is
  the same, audio is still untouched, but Premiere has less track-switching
  overhead during long applies.
- Preview now reuses cached AI voice masks for the same mic clip/gain/settings
  during the current panel session. The first Preview still listens normally, but
  repeated Previews after changing cut style or camera choices should be much
  quicker.

- Apply now cuts each camera track from the end of the episode back toward the
  start. This keeps OnMic's non-destructive model, still never touches mic/audio
  tracks, and should avoid Premiere getting slower and slower as more early
  timeline splits are created.
- Apply now logs simple timing diagnostics for the cut phase and visibility
  assignment phase, so slow real-world episodes can show exactly where Premiere
  spent the time.
- The edit engine is a little calmer about tiny backchannel interjections:
  Standard and Relaxed hold through slightly longer "yeah/right" moments instead
  of cutting away and immediately back, reducing pointless switches before Apply
  begins.
- OnMic now probes Premiere's Add Edit command IDs for diagnostics, but still
  uses the safer per-video-track razor path because Add Edit can depend on
  timeline targeting and could risk audio tracks.

- Apply is faster on long episodes, three ways that stack:
  1. Per-track cutting. Each camera track is now sliced ONLY where its own shot
     changes (back to the proven approach) instead of slicing every track at
     every switch point. That's roughly a third fewer physical cuts. It also
     means the slice can't touch your mic/audio tracks at all — the v0.54
     audio-lock step is gone, so there's no risk of a mic track being left
     locked.
  2. Calmer edit, fewer cuts at the source. A new hysteresis pass holds the
     current speaker through brief backchannel interjections (a half-second
     "yeah" / "right") instead of whipping to that person and straight back.
     Fewer pointless A-to-B-to-A flickers = a more natural edit AND less work
     to apply. (Tunable; default holds through interjections under ~1s.)
  3. Wave-based progress. The cut now repaints in ~8 visible waves across the
     whole episode instead of stalling every couple hundred cuts. You still
     watch it cut, with far fewer repaint pauses.
- Net effect on a busy 90-minute, 3-camera episode: meaningfully fewer cuts to
  place and noticeably faster Apply, with the edit itself a touch calmer.
- Note: "Fast flatten" (a destructive one-clip-per-segment mode) was considered
  and intentionally skipped for now — switching stays fully non-destructive so
  every camera angle remains on the timeline for manual tweaks.