Kimi and Kimi CN join the provider catalog: OpenAI-compatible endpoints, verified live

- kimi -> https://api.moonshot.ai/v1 (platform.kimi.ai keys), kimi-cn -> https://api.moonshot.cn/v1 (platform.kimi.com keys)
- Adapters via openAiCompatibleAdapter; agent loop via makeChatCompletionsTurn; live model listing
- Curated fallback models per current docs: kimi-k2.7-code, kimi-k2.7-code-highspeed, kimi-k2.6
- Migration 056 seeds both providers (disabled) into existing organizations
- Both endpoints probed live: OpenAI-style 401 error envelope confirmed

tests/contract/provider-contracts.test.ts

@@ -18,6 +18,8 @@ const PROVIDER_SECRET_SAMPLES: Record<string, string> = {
   mistral: "sk-live-provider",
   cerebras: "csk-live-provider",
   openrouter: "sk-or-live-provider",
+  kimi: "sk-live-provider",
+  "kimi-cn": "sk-live-provider",
   "github-copilot": "ghu_live_provider",
   "google-antigravity": "antigravity-session",
   "gpt-account": "chatgpt-session",