fix(settings): harden PATCH/redeploy per code review

- Add infisicalsdk dependency
- Narrow update→create fallback to NotFound errors only (no silent swallow)
- Truncate Coolify error response text to 200 chars
- Add 60s cooldown to redeploy endpoint
- Move httpx to top-level import

mcp-server/pyproject.toml

@@ -20,6 +20,7 @@ dependencies = [
     "fastapi>=0.115.0",
     "uvicorn[standard]>=0.30.0",
     "httpx>=0.27.0",
+    "infisicalsdk>=1.0.0",
 ]
 
 [build-system]