chore: Remove obsolete microservices directories and update all references

- Delete data-entry-app/ (1.6GB), reports-app/ (447MB), .auto-build-data/
- Saved ~1.4GB disk space (64% reduction: 2.2GB → 845MB)

Updated references across 38 files:
- .claude/rules/ paths: backend/modules/, src/modules/
- .claude/commands/validate.md: all validation paths
- docs/ (13 files): data-entry, telegram, README, CLAUDE.md
- scripts/ (3 files): backup-secrets, restore-secrets, test-docker
- security/ (2 files): git_cleanup, SECURITY_PROCEDURES
- deployment/ & shared/: updated all stale comments

All paths now reflect ultrathin monolith architecture:
- Backend: backend/modules/{reports,data_entry,telegram}/
- Frontend: src/modules/{reports,data-entry}/
- Shared: shared/{auth,database,routes}/

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

.claude/rules/backend-patterns.md

@@ -1,5 +1,5 @@
 ---
-paths: {reports-app,data-entry-app}/backend/**/*.py
+paths: backend/modules/**/*.py
 ---
 
 # Backend Patterns
@@ -19,7 +19,7 @@ app.include_router(companies_router, prefix="/api/companies")
 - Schema lookup: `SELECT SCHEMA FROM CONTAFIN_ORACLE.V_NOM_FIRME`
 - Company access: Join V_NOM_FIRME with VDEF_UTIL_FIRME
 
-## Caching (reports-app)
+## Caching (Reports Module)
 - Use `@cached` decorator from `app/cache/decorators`
 - Place logic in services, not routers
 - Cache schema lookups (24h TTL)