🐛 fix(templates): enforce main loop progress tracking

replace the old select/record progress flow with a single main_loop claim/finish CLI.

route template execution through main_loop only, remove the legacy plan_progress entry points, and update tests to enforce the new behavior.

tests/test_sync_templates_placeholders.py

@@ -50,7 +50,10 @@ langs = [\"cpp\", \"tsl\"]
 
             rules_md = Path(tmp_dir) / "AGENT_RULES.md"
             rules_text = rules_md.read_text(encoding="utf-8")
-            self.assertIn("docs/standards/playbook/scripts/plan_progress.py", rules_text)
+            self.assertIn("docs/standards/playbook/scripts/main_loop.py claim", rules_text)
+            self.assertNotIn("plan_progress.py", rules_text)
+            self.assertIn("不得直接使用 `$executing-plans`", rules_text)
+            self.assertIn("不得直接使用 `$subagent-driven-development`", rules_text)
             self.assertNotIn("{{PLAYBOOK_SCRIPTS}}", rules_text)
 
     def test_sync_standards_rewrites_typescript_docs_prefix_for_vendored_playbook(self):