Problems fixed:
1. 401 unauthorized on chat — OLLAMA_API_KEY was not set in containers
- Created docker/.env with real API key
- Added OLLAMA_BASE_URL + OLLAMA_API_KEY to control-center in docker-compose.yml
2. AgentDetailModal/AgentCreateModal showed hardcoded providers list
(Ollama, OpenAI, Anthropic, Mistral, Groq) regardless of what is configured
- Removed const PROVIDERS = [...] from both modals
- Now loads providers via trpc.config.providers (server-side)
- Only shows providers that are actually configured in env
3. Settings.tsx had API key hardcoded in frontend source code (security issue)
- API key removed from frontend
- New trpc.config.providers endpoint returns masked key (first 8 chars + ***)
- Shows red warning badge 'NO KEY — chat will fail' if key is missing
- Base URL read from server env, not hardcoded
New tRPC endpoint: config.providers
- Returns list of configured providers with name, baseUrl, hasKey, maskedKey
- Provider name auto-detected from URL (ollama.com → 'Ollama Cloud', etc.)
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