Human Yield: Implement Presence Detection and Locking Mechanism

[kingdonb]

Summary

Implement a reliable presence detection mechanism to safely manage the presence.lock for background agents.

Business Value

Ensures Cooperative Rebase and Human Yield. If the human is actively working on the workstation or using the CLI, the background daemon must yield and NOT spawn ghost sessions that could cause git conflicts or system contention.

Requirements

• Add a new command bin/mecris presence (or a background thread in the CLI).
• Implement detection logic to determine if the human is "active":
  • Check for recent keyboard/mouse input (OS-specific APIs if necessary, or simply check if the user's terminal session is active).
  • Check if a mecris interactive CLI session is currently running.
• Create a lock file mechanism (/tmp/mecris_presence.lock) that the daemon respects.
• If the lock is present, the scheduler must abort any pending autonomous turns.

Deliverables

• Presence detection logic in Python.
• Integration with the MecrisScheduler to respect the lock.
• Documentation on how the detection works across different OS environments (macOS/Linux).

---

Labels: enhancement, autonomous, goal-1