feat(agent): deprecate and completely remove cline agent support

- Delete adapters/cline.py and unregister from registry.py
- Remove cline branches from lib.sh and all 8 skill scripts (create, resume, stop, status, reconcile, update_yaml_resumed, resolve_session_id, orc_onboard)
- Narrow own-key mapping dictionaries across lib_py core modules to 4 supported agents
- Delete cline-exclusive tests and retarget shared fixtures to grok/hermes/claude
- Update skills documentation and installation guides (439 passed, 0 failures)
- Archive cline deprecation consensus and review reports

.agents/skills/multi-agent-mux-status/scripts/status.sh

@@ -53,12 +53,12 @@ def resume_on_disk(s):
     name = s.get('name', '')
     cwd = (s.get('pane') or {}).get('cwd', '')
     agent = None
-    for a in ('claude', 'agy', 'hermes', 'cline', 'grok'):
+    for a in ('claude', 'agy', 'hermes', 'grok'):
         if any(name.endswith(f'-{r}-{a}') for r in ('creator', 'planner', 'reviewer')) or name.endswith(f'-{a}'):
             agent = a
             break
     if not agent:
-        for a in ('claude', 'agy', 'hermes', 'cline', 'grok'):
+        for a in ('claude', 'agy', 'hermes', 'grok'):
             if f"-{a}" in name or f"_{a}" in name:
                 agent = a
                 break
@@ -90,11 +90,6 @@ def resume_on_disk(s):
             except Exception:
                 return 'MISSING'
         return 'no'
-    if agent == 'cline':
-        u = s.get('cline_conversation_id_own')
-        if u:
-            return 'yes' if os.path.exists(f"{home}/.cline/data/sessions/{u}/{u}.json") else 'MISSING'
-        return 'no'
     if agent == 'grok':
         u = s.get('grok_session_id_own')
         if u: