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>

scripts/backup-secrets.sh

@@ -59,10 +59,10 @@ echo ""
 
 # List of secret files to backup
 SECRET_FILES=(
-    "reports-app/backend/.env"
-    "reports-app/backend/.env.prod"
-    "reports-app/telegram-bot/.env"
-    "reports-app/telegram-bot/.env.prod"
+    "backend/.env"
+    "backend/.env.prod"
+    "backend/modules/telegram/.env"
+    "backend/modules/telegram/.env.prod"
 )
 
 # List of secret directories to backup (will backup all files inside)
@@ -185,22 +185,22 @@ openssl enc -aes-256-cbc -d -pbkdf2 -in backend-.env.enc -out .env
 # Backend .env
 openssl enc -aes-256-cbc -d -pbkdf2 \\
   -in backend-.env.enc \\
-  -out ../../../reports-app/backend/.env
+  -out ../../../backend/.env
 
 # Backend .env.prod
 openssl enc -aes-256-cbc -d -pbkdf2 \\
   -in backend-.env.prod.enc \\
-  -out ../../../reports-app/backend/.env.prod
+  -out ../../../backend/.env.prod
 
 # Telegram Bot .env
 openssl enc -aes-256-cbc -d -pbkdf2 \\
   -in telegram-bot-.env.enc \\
-  -out ../../../reports-app/telegram-bot/.env
+  -out ../../../backend/modules/telegram/.env
 
 # Telegram Bot .env.prod
 openssl enc -aes-256-cbc -d -pbkdf2 \\
   -in telegram-bot-.env.prod.enc \\
-  -out ../../../reports-app/telegram-bot/.env.prod
+  -out ../../../backend/modules/telegram/.env.prod
 
 # Decrypt and extract secrets directory
 openssl enc -aes-256-cbc -d -pbkdf2 -in secrets.tar.enc | \\