kin: auto-commit after pipeline

cli/main.py

@@ -6,7 +6,7 @@ Uses core.models for all data access, never raw SQL.
 import json
 import os
 import sys
-from datetime import datetime
+from datetime import datetime, timezone
 from pathlib import Path
 
 import click
@@ -618,13 +618,13 @@ def run_task(ctx, task_id, dry_run, allow_write):
 
     # Step 1: PM decomposes
     click.echo("Running PM to decompose task...")
-    pm_started_at = datetime.utcnow().isoformat()
+    pm_started_at = datetime.now(timezone.utc).isoformat()
     pm_result = run_agent(
         conn, "pm", task_id, project_id,
         model="sonnet", dry_run=dry_run,
         allow_write=allow_write, noninteractive=is_noninteractive,
     )
-    pm_ended_at = datetime.utcnow().isoformat()
+    pm_ended_at = datetime.now(timezone.utc).isoformat()
 
     if dry_run:
         click.echo("\n--- PM Prompt (dry-run) ---")