ci: align deployment on Kuby (Docker + rsync + SSH key + healthcheck + rollback)

- Add HTTP /health endpoint (aiohttp) for Docker healthcheck + post-deploy check
- Dockerfile HEALTHCHECK hits /health; docker-compose exposes 1890, container vision-bot
- scripts/deploy_runner.sh runs on .117 (docker compose build/restart)
- .forgejo/workflows/deploy.yml: single job on omhk-deploy runner (clone, syntax test,
  rsync, deploy, health check, auto-rollback) like Kuby
- .forgejo/workflows/ci.yml: single job (ruff + pytest) on dev/PR

vision.py

@@ -4,6 +4,7 @@ import sys
 
 import config
 from bot import VisionBot
+from health import start_health_server
 
 logging.basicConfig(
     level=logging.INFO,
@@ -24,8 +25,10 @@ async def main():
 
     instance = "DEV" if config.DEV else "PROD"
     logger.info(f"Lancement de Vision Studio [{instance}]...")
-    bot = VisionBot()
 
+    await start_health_server(config.HEALTH_PORT)
+
+    bot = VisionBot()
     try:
         await bot.start(config.DISCORD_TOKEN)
     except KeyboardInterrupt: