Replaces the bare uvicorn command with a comprehensive dev launcher script that provides: auto port selection if 8000 is taken, docker compose isolation, clickable service links (dashboard, health, API docs, Ollama), a status line showing version/git commit/inference backend, smoke tests on startup, and a dev shell with the timmy CLI wired to the running instance. Fixes #385 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>