feat(recovery): add crash recovery system for frame manager

- Add FrameRecovery class with WAL checkpoint, integrity checks, orphan detection
- Integrate recovery into RefactoredFrameManager.initialize()
- Add validateProjectIntegrity() and getRecoveryReport() methods
- Closes orphaned frames from crashed sessions (>24h old)
- Add recovery tests (consolidated to 4 tests)
- Consolidate context-bridge tests (19 -> 7)
- Total tests: 490 (under 500 target)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: jonathanpeterwu

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@stackmemoryai/stackmemory",
-  "version": "0.5.36",
+  "version": "0.5.37",
   "description": "Lossless memory runtime for AI coding tools - organizes context as a call stack instead of linear chat logs, with team collaboration and infinite retention",
   "engines": {
     "node": ">=20.0.0",