Address review feedback from @coderabbitai and @gemini-code-assist:
- Missing API key is now a silent no-op instead of returning an error
- Network/TLS errors are now propagated via `?` instead of silently
discarded, so they surface as non-fatal warnings in the caller's log
- Added `error_for_status()` to catch HTTP-level failures
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The first API request after daemon startup consistently timed out (120s)
when using channels (Telegram, Discord, etc.), requiring a retry before
succeeding. This happened because the reqwest HTTP client's connection
pool was cold — no TLS handshake, DNS resolution, or HTTP/2 negotiation
had occurred yet.
The fix adds a `warmup()` method to the Provider trait that establishes
the connection pool on startup by hitting a lightweight endpoint
(`/api/v1/auth/key` for OpenRouter). The channel server calls this
immediately after creating the provider, before entering the message
processing loop.
Tested on Raspberry Pi 5 (aarch64) with OpenRouter + DeepSeek v3.2 via
Telegram channel. Before: first message took 2-7 minutes (120s timeout +
retries). After: first message responds in <30s with no retries.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>