Initial commit: Screen Leads app

Screen-capture lead tool: capture agent, Claude vision extractor with
pluggable site recipes (LinkedIn), canonical funnel model, SQLite storage,
FastAPI backend, dashboard, and setup/run scripts.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

main.py

@@ -0,0 +1,18 @@
+"""Entry point: launch the dashboard + API.
+
+    python main.py
+
+Then open http://127.0.0.1:8000 and use Start / Pause / Stop. Requires
+ANTHROPIC_API_KEY in the environment (or an `ant auth login` profile).
+"""
+import uvicorn
+
+import config
+
+
+def main() -> None:
+    uvicorn.run("api.app:app", host=config.HOST, port=config.PORT, reload=False)
+
+
+if __name__ == "__main__":
+    main()