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-loop/scripts/run_loop.sh

@@ -289,7 +289,7 @@ print(','.join(reviewers))
 "
 }
 
-# Resolve target agent type (claude, cline, agy) via load_state_json.
+# Resolve target agent type (claude, hermes, agy) via load_state_json.
 resolve_agent_type() {
   local name="$1"
   NAME="$name" MAM_STATE_JSON="$(load_state_json)" python3 -c "
@@ -307,8 +307,6 @@ if not agent:
     segments = name.split('-')
     if 'agy' in segments:
         agent = 'agy'
-    elif 'cline' in segments:
-        agent = 'cline'
     elif 'hermes' in segments:
         agent = 'hermes'
     else: