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.

tests/test_schedule_cli.py

@@ -6,11 +6,13 @@ import json
 from pathlib import Path
 
 import pytest
+import yaml
 from click.testing import CliRunner
 
 from kaizen_agentic.cli import cli
 from kaizen_agentic.schedule import (
     ScheduleError,
+    engagement_schedule_yaml,
     parse_schedule,
     schedule_path,
     validate_schedule,
@@ -30,6 +32,20 @@ def project_dir(tmp_path: Path) -> Path:
 
 
 class TestScheduleModule:
+    def test_engagement_schedule_yaml_hourly_preset(self):
+        text = engagement_schedule_yaml(
+            "coulomb-loop",
+            agents=["coach", "optimization"],
+            bootstrap_cadence="hourly",
+        )
+        assert "Engagement: coulomb-loop bootstrap" in text
+        body = "\n".join(line for line in text.splitlines() if not line.startswith("#"))
+        schedule = parse_schedule(yaml.safe_load(body))
+        coach = schedule.entry_for("coach")
+        assert coach is not None
+        assert coach.cadence == "daily"
+        assert coach.cron == "15 * * * *"
+
     def test_parse_requires_version(self):
         with pytest.raises(ScheduleError):
             parse_schedule({"agents": {}})
@@ -67,6 +83,67 @@ class TestScheduleCli:
         assert path.exists()
         assert "coach" in path.read_text()
 
+    def test_engagement_init_hourly_bootstrap(
+        self, runner: CliRunner, project_dir: Path
+    ):
+        result = runner.invoke(
+            cli,
+            [
+                "schedule",
+                "init",
+                "--target",
+                str(project_dir),
+                "--engagement",
+                "coulomb-loop",
+                "--agents",
+                "coach,optimization",
+                "--bootstrap-cadence",
+                "hourly",
+            ],
+        )
+        assert result.exit_code == 0, result.output
+        text = schedule_path(project_dir).read_text()
+        assert "Engagement: coulomb-loop bootstrap" in text
+        assert "cron: 15 * * * *" in text
+        assert "cadence: daily" in text
+        assert "Engagement: coulomb-loop" in result.output
+
+    def test_engagement_init_validates_unknown_agent(
+        self, runner: CliRunner, project_dir: Path
+    ):
+        result = runner.invoke(
+            cli,
+            [
+                "schedule",
+                "init",
+                "--target",
+                str(project_dir),
+                "--engagement",
+                "demo",
+                "--agents",
+                "not-a-real-agent",
+            ],
+        )
+        assert result.exit_code == 1
+        assert "unknown agent" in result.output
+
+    def test_engagement_flags_require_engagement_slug(
+        self, runner: CliRunner, project_dir: Path
+    ):
+        result = runner.invoke(
+            cli,
+            [
+                "schedule",
+                "init",
+                "--target",
+                str(project_dir),
+                "--agents",
+                "coach",
+            ],
+        )
+        assert result.exit_code == 1
+        assert "--engagement" in result.output
+
     def test_init_no_overwrite_without_force(
         self, runner: CliRunner, project_dir: Path
     ):