feat: schedule init --engagement for customer bootstrap presets

Add --engagement, --agents, and --bootstrap-cadence flags to scaffold
hourly/daily/weekly engagement schedules. Hourly bootstrap keeps
cadence: daily with hourly cron overrides per coulomb-loop ADR-003.
Document activity-core requirements in activity-core-handoff-engagement.md.
Closes KAIZEN-WP-0008 T02 and T04.

src/kaizen_agentic/cli.py

@@ -26,6 +26,7 @@ from .optimization import OptimizationLoop, MIN_SAMPLES_FOR_RECOMMENDATIONS
 from .schedule import (
     ScheduleError,
     default_schedule_yaml,
+    engagement_schedule_yaml,
     load_schedule,
     schedule_path,
     validate_schedule,
@@ -1455,8 +1456,39 @@ def schedule_validate(target: str):
     "--timezone", default="Europe/Berlin", show_default=True, help="Schedule timezone"
 )
 @click.option("--force", is_flag=True, help="Overwrite an existing schedule.yml")
-def schedule_init(target: str, timezone: str, force: bool):
-    """Scaffold a default .kaizen/schedule.yml (coach + optimization weekly)."""
+@click.option(
+    "--engagement",
+    default=None,
+    help="Customer engagement slug (bootstrap schedule for target repos)",
+)
+@click.option(
+    "--agents",
+    default=None,
+    help="Comma-separated agents for --engagement (default: coach,optimization)",
+)
+@click.option(
+    "--bootstrap-cadence",
+    type=click.Choice(["hourly", "daily", "weekly"]),
+    default="hourly",
+    show_default=True,
+    help="Cadence preset for --engagement (hourly uses daily enum + hourly cron)",
+)
+def schedule_init(
+    target: str,
+    timezone: str,
+    force: bool,
+    engagement: Optional[str],
+    agents: Optional[str],
+    bootstrap_cadence: str,
+):
+    """Scaffold .kaizen/schedule.yml (weekly default or engagement bootstrap)."""
+    if (agents or bootstrap_cadence != "hourly") and not engagement:
+        click.echo(
+            "Error: --agents and --bootstrap-cadence require --engagement",
+            err=True,
+        )
+        sys.exit(1)
+
     path = schedule_path(_project_root(target))
 
     if path.exists() and not force:
@@ -1464,9 +1496,41 @@ def schedule_init(target: str, timezone: str, force: bool):
         click.echo("  Use --force to overwrite.")
         return
 
+    if engagement:
+        agent_list = (
+            [item.strip() for item in agents.split(",") if item.strip()]
+            if agents
+            else None
+        )
+        known_agents = _get_registry().agent_names()
+        if agent_list:
+            unknown = [name for name in agent_list if name not in known_agents]
+            if unknown:
+                click.echo(
+                    f"Error: unknown agent(s) for engagement schedule: {', '.join(unknown)}",
+                    err=True,
+                )
+                sys.exit(1)
+        try:
+            yaml_text = engagement_schedule_yaml(
+                engagement,
+                agents=agent_list,
+                bootstrap_cadence=bootstrap_cadence,
+                timezone=timezone,
+            )
+        except ScheduleError as exc:
+            click.echo(f"Error: {exc}", err=True)
+            sys.exit(1)
+    else:
+        yaml_text = default_schedule_yaml(timezone=timezone)
+
     path.parent.mkdir(parents=True, exist_ok=True)
-    path.write_text(default_schedule_yaml(timezone=timezone), encoding="utf-8")
+    path.write_text(yaml_text, encoding="utf-8")
     click.echo(f"Initialized schedule: {path}")
+    if engagement:
+        click.echo(
+            f"  Engagement: {engagement} (bootstrap-cadence={bootstrap_cadence})"
+        )
     click.echo("  Validate with: kaizen-agentic schedule validate")