Force a safe wake probe for ambiguous macOS screensaver lock states

[matt-greathouse]

Summary

• Force a native user-activity wake probe when macOS reports a locked session without an active screensaver.
• Preserve lock-screen safety by verifying readiness afterward and requiring manual unlock when still locked.
• Include before/after desktop diagnostics, wake details, and frontmost app metadata in wake errors and batch action logs.
• Update desktop schema documentation and readiness tests for the new behavior.

Testing

• Updated DaemonDispatchTests coverage for automatic wake decisions across locked, screensaver, and sleeping-display states.
• Not run (not requested)