Remote-control lane can now push model and effort picks into a running session

What

• New applyModelPick and applyEffortSeed capabilities let the SDK-host (bridge/server) side of remote control apply a model change or an effort-level (reasoning effort) change to a session that is already running.
• The bridge reads a claude_code_args value from auto-mode facts, and when a model or effort value is present and different from the last one applied, it calls these functions on the session, logging sdk-host lane model pick applied or sdk-host lane effort seeded.
• If the running session declines the change, the attempt is logged as a refusal warning rather than silently failing.

Why This lets a remote controller adjust which model or effort/reasoning level a live session uses without restarting it, while making it visible when the session refuses to accept the change.