Reasoning controls (effort, budget, on/off) are now driven by the models.dev catalog and normalized once before provider encoding, so requests match what each provider actually advertises; Anthropic's mandatory and impossible thinking modes are handled explicitly, and out-of-range budgets are clamped OpenRouter now defaults to `anthropic/claude-sonnet-5` The per-server `timeout` in `cline_mcp_settings.json` is now honored by the SDK's MCP clients for `initialize`, `tools/list`, and `tools/call` instead of hardcoded 1.5s and 5s limits — it defaults to 60 seconds and is clamped to 1–3600 seconds Fixed the China and international endpoint toggles being ignored for Qwen, Moonshot, and Z AI Legacy API keys are now migrated for every secret-backed provider instead of a subset Legacy OpenAI Compatible model-info overrides are now carried into the seeded `models.json` instead of being dropped Removed the "Enable R1 messages format" option from the OpenAI Compatible provider Fixed checkpoint restores across session resumes Added session forking and user-run message APIs so a host can edit an earlier prompt: fork the session before a selected user run, trim checkpoint history, and restore…