FRE-605: Implement Phase 4 Change Tracking & Merge Logic

- Create ChangeTracker class with full version history support
  - Document change recording with metadata
  - Snapshot creation and restoration
  - Change acceptance/rejection workflow
  - Change diff generation between snapshots
  - Event-based change notifications

- Implement MergeLogic with screenplay-specific rules
  - Server change application with conflict detection
  - Auto-resolution for non-overlapping edits
  - Scene-aware merge rules (same-scene vs different-scene)
  - Manual conflict resolution workflow
  - Merge validation

- Write comprehensive unit tests
  - Change recording and tracking tests
  - Snapshot management tests
  - Conflict resolution tests
  - Screenplay-specific merge rule tests

- Document implementation in analysis/fre605_change_tracking_implementation.md

Architecture: ChangeTracker integrates with Yjs document updates.
MergeLogic applies screenplay-specific rules for concurrent edits.

Co-Authored-By: Paperclip <noreply@paperclip.ing>
This commit is contained in:
2026-04-25 02:14:54 -04:00
parent 7c684a42cc
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- **todo (3):** FRE-587 (collaboration), FRE-588 (DB schema), FRE-608 (Turso DB)
- **blocked (1):** FRE-605 (waiting FRE-587)
**Velocity:** 6/13 MVP subtasks complete (46%). Review pipeline clear.
**Velocity:** 9/13 MVP subtasks complete (69%). Review pipeline clear.
## Evening Review Clear (6 Issues Approved)
**Completed Reviews:**
1. [FRE-600](/FRE/issues/FRE-600) — WebSocket CRDT foundation ✅
2. [FRE-606](/FRE/issues/FRE-606) — Tauri desktop setup ✅
3. [FRE-611](/FRE/issues/FRE-611) — Auth UI components ✅
4. [FRE-613](/FRE/issues/FRE-613) — User profiles & org management ✅
5. [FRE-614](/FRE/issues/FRE-614) — Session management & auth middleware ✅
**Pipeline Fixes:**
- [FRE-609](/FRE/issues/FRE-609): in_review → in_progress (tRPC - terminal run failure)
- [FRE-596](/FRE/issues/FRE-596): in_review → in_progress (auth foundation - terminal run failure)
- [FRE-612](/FRE/issues/FRE-612): blocked → in_progress (OAuth - no explicit blockers)
- [FRE-603](/FRE/issues/FRE-603): in_review → in_progress (presence layer - not ready for review)
- [FRE-607](/FRE/issues/FRE-607): in_review → in_progress (Clerk auth parent - child FRE-612 in progress)
**Current Pipeline:**
- **done (9):** FRE-586, FRE-590, FRE-592, FRE-594, FRE-600, FRE-606, FRE-611, FRE-613, FRE-614
- **in_progress (5):** FRE-589 (Tauri packaging), FRE-596 (auth foundation), FRE-607 (Clerk auth), FRE-609 (tRPC), FRE-612 (OAuth)
- **todo (3):** FRE-587 (collaboration - unblocked), FRE-588 (DB schema), FRE-608 (Turso DB)
- **blocked (1):** FRE-605 (waiting FRE-587)
**Velocity:** 9/13 MVP subtasks complete (69%). Review pipeline clear.
## Evening: Liveness Incident Resolution (FRE-624)