520e6f545d
Add bot_bottle/api.py with four public functions the orchestrator uses: start_headless, resume_headless, freeze, and destroy. These let a ProgrammaticBottleRunner call directly into bot_bottle instead of shelling out to the CLI; call sites in lifecycle.py stay unchanged. Key changes: - BottleSpec gains forge_env field for forge sidecar credentials - _launch_bottle returns (slug, exit_code) instead of int so start_headless can return the slug to callers - All four API functions convert Die and non-zero exits to BottleError - 27 new unit tests; existing tests updated for the new return type Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>