feat: add Fishbowl UI presenter layer and say-vs-think engine support

feat: unify model catalogue and self-hosted routing

feat: Instructor-validated structured output on the live path

feat: LiteLLM gateway routing profiles to Modal-served small models

feat: update setup instructions and dependencies for uv integration

Refactor code structure for improved readability and maintainability

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

feat: scaffold hackathon agent theater