* Handle CORS preflight.

* Handle MCP protocol requests at /mcp endpoint. * Supports POST (requests), GET (SSE stream), and DELETE (session cleanup).

* Initialize the store. Tries SQLite first, falls back to in-memory.

* Initialize the tenant store.

* Check if a name looks like minified/production code (single letter or very short)

* Match a request to a route.

* Normalize a component name to match CSS class conventions * SideNav -> side-nav, LinkComponent -> link-component

* Parse the first non-internal frame from an error stack string.

* Probe a single fiber's component function by invoking it with a * throwing hooks dispatcher and parsing the resulting error stack.

* Walk the fiber tree via .return, probing each fiber for source info. * Stops at the first success.

* Proxy a request to the cloud API.

* Send webhook notification for an action request. * Fire-and-forget: doesn't wait for response, logs errors but doesn't throw.

* Subscribe to all events.

* Subscribe to events for a specific session.

* Convert a SectionRect (page-absolute) to viewport-relative edges.

* Extract the callable function from a fiber, handling wrappers. * Returns null for class components, host elements, or unrecognized types.

* Watch for new annotation.created events via SSE from the HTTP server. * When the first annotation is detected, waits for a batch window to collect