feat(core): finalize rvw stability updates and pending module changes

Summary:
- Harden RVW prompt protocol handling and methodology review flow with 20-checkpoint coverage, divide-and-conquer execution, and timeout tuning
- Update RVW frontend methodology report rendering to show real structured outputs and grouped checkpoint sections
- Include pending backend/frontend updates across IIT admin, SSA, extraction forensics, and related integration files
- Sync system and RVW status documentation, deployment checklist, and RVW architecture/plan docs

Validation:
- Verified lint diagnostics for touched RVW backend/frontend files show no new errors
- Kept backup dump files and local test artifacts untracked

Made-with: Cursor

backend/.env.example

@@ -30,3 +30,8 @@ DIFY_API_KEY=your-dify-api-key
 # Server
 PORT=3001
 NODE_ENV=development
+
+# RVW DataForensics Mode
+# false (default): extract tables + LLM review only
+# true: enable legacy rule-based validation (L1/L2) in addition to extraction
+RVW_FORENSICS_RULES_ENABLED=false