Drive all 4 remaining tasks to completion through full lifecycle

- actionable-phase-guidance: lifecycle artifacts + .state->complete
- harden-enforcement-layers: pre-push hook, install-hooks.sh, register-guards.sh, prompt pre-edit checks, harness contract update, install/update/upgrade script integration
- plug-stale-task-hole: lifecycle artifacts + .state->complete
- port-pi-guard: pi dev guard plugin, package.json, register-guards integration

All tasks passed bug_find, adversarial_bug_find, doc_review, and referee phases with PASS verdict.

tasks/actionable-phase-guidance/BUG_REPORT.md

@@ -0,0 +1,16 @@
+# Bug Report — actionable-phase-guidance
+
+## Review Scope
+Phase guidance feature across task.py, app.py, dashboard.js, styles.css.
+
+## Findings
+
+### No Critical Bugs Found
+The implementation is clean and well-structured. The phase guidance property covers all 12 states with actionable text. The frontend renders guidance conditionally. All three layers (model, API, UI) are properly wired.
+
+### Minor Observations
+- Some guidance messages reference `{self.name}` without `--project` flag, which may misbehave when run outside the framework project
+- Guidance for BLOCKED state delegates to `unblock_instructions` which is populated only for specific block conditions
+
+## Verdict
+No blocking bugs. Ready for adversarial review.