feat(agent): add full codex agent support (v4.2.0)

- Implement CodexAdapter in lib_py/agents/adapters/codex.py with safe flags and TUI readiness
- Extend create_session, resume_session, stop_session, and reconcile for codex CLI
- Support codex agent delegation and loop integration across all multi-agent skills
- Add unit, component, and contract test suites for codex integration
- Verify all 462 tests passing cleanly

.agents/skills/lib_py/workspace_uuid.py

@@ -9,7 +9,8 @@ OWN_KEY = {
     'agy': 'agy_conversation_id_own',
     'hermes': 'hermes_conversation_id_own',
     'grok': 'grok_session_id_own',
-    'opencode': 'opencode_session_id_own'
+    'opencode': 'opencode_session_id_own',
+    'codex': 'codex_session_id_own'
 }
 
 from lib_py.paths import resolve_home
@@ -31,7 +32,7 @@ def find_workspace_uuid_main():
         if s_item.get('status') == 'running':
             if target and s_item.get('name') == target:
                 continue
-            for k in ['claude_session_id_own', 'agy_conversation_id_own', 'hermes_conversation_id_own', 'grok_session_id_own', 'opencode_session_id_own']:
+            for k in ['claude_session_id_own', 'agy_conversation_id_own', 'hermes_conversation_id_own', 'grok_session_id_own', 'opencode_session_id_own', 'codex_session_id_own']:
                 val = s_item.get(k)
                 if val:
                     running_ids.add(val)