Initial commit: Agent Governance System Phase 8

Phase 8 Production Hardening with complete governance infrastructure:

- Vault integration with tiered policies (T0-T4)
- DragonflyDB state management
- SQLite audit ledger
- Pipeline DSL and templates
- Promotion/revocation engine
- Checkpoint system for session persistence
- Health manager and circuit breaker for fault tolerance
- GitHub/Slack integrations
- Architectural test pipeline with bug watcher, suggestion engine, council review
- Multi-agent chaos testing framework

Test Results:
- Governance tests: 68/68 passing
- E2E workflow: 16/16 passing
- Phase 2 Vault: 14/14 passing
- Integration tests: 27/27 passing

Coverage: 57.6% average across 12 phases

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

sandbox/ansible/rollback-service.yml

@@ -0,0 +1,40 @@
+---
+# Sample Ansible Playbook: Rollback Docker Service
+# =================================================
+# Rollback playbook for undoing service deployments.
+#
+# Usage:
+#   ansible-playbook rollback-service.yml -e service_name=myapp
+
+- name: Rollback Docker Service
+  hosts: localhost
+  connection: local
+  gather_facts: no
+
+  vars:
+    service_name: "{{ service_name | mandatory }}"
+    remove_volumes: "{{ remove_volumes | default(false) }}"
+
+  tasks:
+    - name: Check if container exists
+      command: "docker ps -a --filter name={{ service_name }} --format '{{ '{{' }}.Names{{ '}}' }}'"
+      register: container_check
+      changed_when: false
+
+    - name: Stop container
+      command: "docker stop {{ service_name }}"
+      when: container_check.stdout != ""
+      ignore_errors: yes
+
+    - name: Remove container
+      command: "docker rm {{ service_name }}"
+      when: container_check.stdout != ""
+
+    - name: Remove associated volumes (optional)
+      command: "docker volume rm {{ service_name }}-data"
+      when: remove_volumes | bool
+      ignore_errors: yes
+
+    - name: Confirm rollback
+      debug:
+        msg: "Service {{ service_name }} has been rolled back"