Initial curated EventLens source from 0d80d3b38dfb817285481665b9e71e4b8a0656a0

Makefile

@@ -0,0 +1,12 @@
+.PHONY: api web test e2e build
+api:
+	cd backend && python -m uv run --locked --extra dev uvicorn app.main:app --reload --port 8000
+web:
+	cd frontend && npm run dev
+test:
+	cd backend && python -m uv run --locked --extra dev pytest -W error::DeprecationWarning
+	cd frontend && npm test
+e2e:
+	cd frontend && npm run test:e2e
+build:
+	cd frontend && npm run build