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>

docs/telegram/testing/DOCKER_TESTING_GUIDE.md

@@ -1,5 +1,11 @@
 # 🐳 Docker Testing Guide - ROA2WEB Telegram Bot
 
+> ⚠️ **DEPRECATED ARCHITECTURE**
+>
+> This guide references the OLD microservices architecture (separate Telegram container on port 8002).
+> The current architecture is an **ultrathin monolith** where the Telegram bot runs as a background
+> task within the main backend (port 8000/8001). No separate Docker container needed for Telegram.
+
 This guide provides instructions for testing the Telegram bot Docker deployment.
 
 ## 📋 Prerequisites