## Summary
- Refactors the admin interface into focused views and simplifies the
header (removes noisy status labels; hides managed-source labels where
appropriate).
- Fixes Claude runtime settings handling, reduces Z.ai base URL leakage
in the admin UI, and streamlines API startup logging.
- Updates configuration and catalog behavior (including `.env.example` /
README), and expands automated tests around admin, app lifespan, and
config/registry behavior.
## Test plan
- [ ] `uv run ruff format`, `uv run ruff check`, `uv run ty check`, `uv
run pytest`
- [ ] Smoke the admin UI: navigation between views, settings save/load,
no sensitive URL leakage in the UI
- [ ] Confirm API startup logs are readable and not overly verbose in
normal operation
## Summary
- split the admin UI into Providers, Model Config, and Messaging views
- remove generated env, diagnostics, smoke, managed-label, and fixed
cloud/runtime settings from the visible admin UX
- make Z.ai base URL, Claude workspace, and Claude CLI binary fixed
app-level behavior instead of managed env fields
## Verification
- uv run ruff format
- uv run ruff check
- uv run ty check
- uv run pytest
