This pull request improves the server startup logic in src/server.rs by introducing a fallback mechanism when binding to the requested address fails. The server will now attempt to bind to an OS-assigned port if the initial address is unavailable, and updates the logging to reflect the actual address and port in use.

Server startup robustness:

• Added FALLBACK_BIND_ADDRESS constant (0.0.0.0:0) to allow the OS to assign an available port if the requested address cannot be bound.
• Modified the startup logic in start to attempt binding to the fallback address when the initial attempt fails, and log a warning with error details.

Improved logging:

• Updated log messages to display the actual address and port the server is listening on, including for live reload WebSocket and HTTP server URLs.