Add nexus/gemini_harness.py — a Hermes/OpenClaw harness backed by the
Gemini API, following the same pattern as Ezra, Bezalel, and Allegro.
Features implemented:
- Text, code, and multimodal (image) generation via Gemini OpenAI-compat API
- Streaming response support (stream_generate)
- Model fallback chain: gemini-2.5-pro-preview → gemini-2.0-pro → gemini-2.0-flash
- Context caching with configurable TTL (set_context / clear_context)
- Per-call latency, token, and cost telemetry logged + emitted to Hermes WS
- Hermes WebSocket registration on harness.start()
- HTTP server (create_app) exposing /generate, /generate/code, /health,
/status, /context endpoints for network access (--serve --port 9300)
- Sovereign-orchestration worker registration (register_in_orchestration)
- 48 unit tests (all passing), live API tests gated on RUN_LIVE_TESTS=1
Timmy is sovereign. Gemini is a worker on the network.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
