refactor: Remove deprecated INTERNAL_API_PORT (ultrathin monolith cleanup)

Architecture cleanup after migration to ultrathin monolith:

- Remove INTERNAL_API_PORT from .env files (was port 8002)
- Clean up bot_main.py: remove uvicorn, Thread, run_internal_api()
- Update validate.md to check /api/telegram/health instead of port 8002
- Add deprecation notices to old Windows deployment docs
- Update docs/telegram/README.md with architecture note

The Telegram internal API is now served at /api/telegram/internal/*
on the main backend port (8000/8001) instead of separate port 8002.

Also includes: menu updates, ServerLogsView improvements, script fixes

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

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

start-prod.sh

@@ -7,6 +7,9 @@
 
 set -e  # Exit on any error
 
+# Get the directory where this script is located
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
 # Colors for output
 RED='\033[0;31m'
 GREEN='\033[0;32m'
@@ -164,13 +167,18 @@ else
     source .env
     set +a
 
-    # Clear old log files
-    > /tmp/unified_backend_prod.log
+    # Create logs directory if not exists
+    mkdir -p "$SCRIPT_DIR/logs"
+
+    # Clear old log files (use logs/ for ServerLogs UI, keep /tmp for quick access)
+    > "$SCRIPT_DIR/logs/backend-stdout.log"
+    > "$SCRIPT_DIR/logs/backend-stderr.log"
     > /tmp/unified_frontend_prod.log
 
     # Start backend with auto-restart on crash (OOM protection)
+    # Logs go to logs/backend-stderr.log for ServerLogs UI
     print_message "Starting unified backend with auto-restart (includes Reports, Data Entry, and Telegram bot)..."
-    nohup ./run-with-restart.sh 8000 /tmp/unified_backend_prod.log > /dev/null 2>&1 &
+    nohup ./run-with-restart.sh 8000 "$SCRIPT_DIR/logs/backend-stderr.log" > /dev/null 2>&1 &
 
     cd - > /dev/null
 
@@ -192,8 +200,8 @@ else
     done
 
     if ! check_port 8000; then
-        print_error "Unified Backend failed to start - check /tmp/unified_backend_prod.log"
-        tail -n 30 /tmp/unified_backend_prod.log
+        print_error "Unified Backend failed to start - check logs/backend-stderr.log"
+        tail -n 30 "$SCRIPT_DIR/logs/backend-stderr.log"
         cleanup
     fi
 fi
@@ -253,7 +261,7 @@ echo "  • Unified API Docs:    http://localhost:8000/docs"
 echo "  • Health Check:        http://localhost:8000/health"
 echo
 echo -e "${BLUE}Log Files:${NC}"
-echo "  • Unified Backend:     /tmp/unified_backend_prod.log"
+echo "  • Unified Backend:     logs/backend-stderr.log"
 echo "  • Unified Frontend:    /tmp/unified_frontend_prod.log"
 echo
 echo -e "${YELLOW}Press Ctrl+C to stop all services${NC}"