Save command-line port and host to database for PDF generation

When the server is started with --port or --host command-line arguments,
these values are now persisted to the database. This ensures that PDF
generation (which uses the port from the database config) uses the correct
port that the server is actually listening on.

Fixes issue where chromium PDF generation was using the default port 10020
from the database instead of the actual server port (e.g., 8080) when
started with --port argument in Docker containers.

Co-authored-by: thawn <1308449+thawn@users.noreply.github.com>

Author: Copilot

src/ttmp32gme/ttmp32gme.py

@@ -812,11 +812,15 @@ def main():
         apply_log_level(log_level_str)
         logger.info(f"Log level set to {log_level_str} from config")
 
-    # Override config with command-line args
+    # Override config with command-line args and save to database
     if args.port:
         config["port"] = args.port
+        db.set_config_value("port", str(args.port))
+        logger.info(f"Port set to {args.port} from command line and saved to database")
     if args.host:
         config["host"] = args.host
+        db.set_config_value("host", args.host)
+        logger.info(f"Host set to {args.host} from command line and saved to database")
 
     port = int(config.get("port", 10020))
     host = config.get("host", "127.0.0.1")