Run golem serve to start the live authoring environment:

golem serve --host 127.0.0.1 --port 8000

Golem's dev server is built on Python's native http.server.ThreadingHTTPServer with an integrated Server-Sent Events endpoint (/golem-reload).

When source files are modified:

1. Golem executes an incremental DAG rebuild.
2. Golem dispatches an SSE reload event to all open browser tabs.
3. Connected browser pages refresh instantly without manual reloading.

If a syntax error is introduced into an AsciiDoc file during live authoring:

• Golem does not crash or exit the server process.
• A high-contrast, dark-mode golem-error-overlay is injected into the browser displaying:
• Exact file coordinate: file:line:col
• Source context snippet showing surrounding lines
• Visual caret pointer identifying the invalid token
• Once the syntax error is corrected, saving the file clears the overlay automatically.