v0.3.0

Experimental OT warm mirror release. This version focuses on reducing startup sync work for focused-file tasks while keeping the normal full snapshot path as the safe source of truth.

Added

• Experimental read-only OT warm mirror for focused Overleaf editor changes.
• Active-editor observation for known text files, with verified native mirror.patchFiles updates to the local mirror.
• Per-file OT freshness metadata in mirror status, used only when focused files are fresh and covered.
• OT diagnostics showing status, fresh files, fallback state, and safe next steps without exposing project content.
• Project-scoped experimental OT preference persisted separately per Overleaf project.

Changed

• Moved the experimental OT control out of the composer toolbar and into the diagnostics menu with a first-use confirmation prompt.
• Added lightweight OT Live status to the probe footer only when the experimental mirror is enabled.
• Shortened the composer compile toggle to Compile and made Track/Compile visual states self-contained.
• Reworked the composer toolbar layout so Track, Compile, model selection, and Send stay in stable columns.
• Kept English and Chinese UI strings locale-specific instead of mixing both languages in one control.

Fixed

• Fixed the experimental OT toggle so it gives visible feedback, can be clicked from the diagnostics menu, and does not appear as a dead Off label.
• Fixed model picker alignment in the bottom toolbar after adding the Compile/Track pills.
• Preserved fallback to normal project reads whenever OT is unavailable, stale, inconsistent, or missing focused-file coverage.

Notes

• OT warm mirror is off by default.
• Full snapshot sync remains the project-level source of truth and fallback.
• OT warm mirror is read-only with respect to Overleaf realtime channels; browser writeback still uses the existing guarded write path.
• Browser writeback, stale guards, verified save gates, and undo remain unchanged.