feat(observability): add OpenTelemetry logging/tracing/metrics foundation

fix: auto-load .env (Python) + normalize Neon postgres scheme for live mode

feat: add Fishbowl Gradio app shell + integrator (Unit 9)

feat: env-gated Postgres event store via SQLAlchemy (layered)

Refactor code structure for improved readability and maintainability

feat: phase 1 — memory layer, governor, second scenario, 70 passing tests

feat: scaffold hackathon agent theater