v0.16.7

FreeLLMAPI no longer sends any key-check request to SerpSearch. This release also adds the onomeo provider, per-key spend in `/v1/usage`, `GET /v1/models/:id`, and per-key monthly caps across rerank, moderation and the router's key checks.

## Providers

- **SerpSearch keys are never checked with a request.** v0.16.6 stopped the 5-minute polling but still sent one empty search when a key was added or on "Check now". At SerpSearch's request, nothing is sent at all now. A new key shows as unchecked until its first real search succeeds, and a key that gets 401/403 on a real search is benched (#1635, #1599).
- **onomeo.** New adapter for onomeo's free OpenAI-compatible gateway (30 calls per 5 hours, shared across its free models). The "— via onomeo.com" footer onomeo adds to free-tier answers is stripped, including from streams. Models arrive through the catalog: Premium now, free tier on 20 November (#1610, #1460).
- **ModelScope** daily cap updated to 100, matching its new credit-based free quota (#1045).
- **Free.ai** keys are no longer health-probed, since no endpoint can tell a real key from a fake one (#1540).
- Model discovery no longer labels paid models as free (#1528).

## Routing and caps

- Per-key monthly caps are now enforced for rerank (#1627) and moderation (#1625), and the router's usable-key checks respect them too (#1626).
- A served search, embedding, rerank, decision, moderation or media request now marks its key as working (#1612, #1620, #1625).
- Rerank traffic shows up in the requests log (#1621).
- **Proxy fail-closed (opt-in).** With `PROXY_REQUIRED_PLATFORMS`, listed providers refuse to send traffic when their proxy is unavailable (#1539).

## API

- **`GET /v1/usage`** now reports spend per key alongside its monthly cap (#1614, #1568). Documented in the API docs (#1615).
- **`GET /v1/models/:id`** (OpenAI `models.retrieve`) is served from the same catalog as `/v1/models` (#1632).
- The listed Claude aliases now work on the OpenAI-format routes (#1613).
- **Model probes (opt-in).** Set `MODEL_PROBE_ENABLED=1` to probe each model on a schedule and label its status. `POST /api/health/probe-models` runs a pass on demand either way (#1492, #1438).

## CLI

- Setup notes detect an installed Codex CLI or ChatGPT desktop app (#1443).

## Updating

Desktop installers below cover Windows, Apple Silicon and Intel macOS, and Linux. Docker: `ghcr.io/tashfeenahmed/freellmapi:v0.16.7` (`latest` also points here). Existing keys and profiles are retained. One additive migration (a new `model_probe_status` table) runs automatically on start.

Thanks to everyone who contributed to this release; you're credited in the README (#1633).

Full changelog: https://github.com/tashfeenahmed/freellmapi/compare/v0.16.6...v0.16.7

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