v1.2.1 - Bugfix Release

Fix daemon stop IPC race condition

Bug: daemon stop via IPC would timeout because stop() closed the IPC server before sending response back to client.

Symptoms:

• daemon stop reported "Daemon is not running" even when daemon was running
• Daemon process remained alive after stop command
• PID file was missing but process still active

Fix:

• Use setImmediate() to schedule stop after response is sent
• Add 'stopped' event emission for process cleanup
• Keep-alive interval checks daemon.isRunning() to exit cleanly

Sequence now:

1. Client sends stop command
2. Server responds immediately with success
3. Server stops after response (via setImmediate)
4. Parent process detects stop and exits

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Stats: 224 tests passing

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