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-resume/scripts/update_yaml_resumed.sh

@@ -4,14 +4,14 @@
 # resume UUID 를 per-row own id (claude_session_id_own / agy_conversation_id_own)
 # 에 박는다 — agent_identities 전역은 더 이상 primary 아님 (cache 로 강등, P0-C/단계 e).
 #
-# Usage: bash update_yaml_resumed.sh --session <name> --uuid <id> [--agent claude|agy|hermes|cline]
+# Usage: bash update_yaml_resumed.sh --session <name> --uuid <id> [--agent claude|agy|hermes|grok]
 set -euo pipefail
 
 source "$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)/lib.sh"
 
 usage() {
   cat <<EOF
-Usage: $0 --session <name> --uuid <id> [--agent claude|agy|hermes|cline] [--herdr-session <name>]
+Usage: $0 --session <name> --uuid <id> [--agent claude|agy|hermes|grok] [--herdr-session <name>]
 EOF
 }
 
@@ -85,7 +85,7 @@ NOW_EPOCH=$(date +%s)
 PANE_PID=$(_herdr list-panes -t "$SESSION_NAME" -F '#{pane_pid}' 2>/dev/null | head -1 || true)
 PANE_PID="${PANE_PID:-}"
 CHILD_PID=0
-if { [ "$AGENT" = "agy" ] || [ "$AGENT" = "hermes" ] || [ "$AGENT" = "cline" ]; } && [ -n "$PANE_PID" ]; then
+if { [ "$AGENT" = "agy" ] || [ "$AGENT" = "hermes" ]; } && [ -n "$PANE_PID" ]; then
   CHILD_PID=$(pgrep -P "$PANE_PID" -x "$AGENT" 2>/dev/null | head -1 || true)
   CHILD_PID="${CHILD_PID:-0}"
 fi
@@ -190,13 +190,6 @@ elif agent == 'hermes':
     cp = os.environ.get('CHILD_PID', '0')
     if cp.isdigit() and int(cp) > 0:
         target['child_pid'] = int(cp)
-elif agent == 'cline':
-    target['pane']['cmd'] = 'cline'
-    target['pane']['cmd_full'] = f'cline -i --id {uuid}'
-    target['cline_conversation_id_own'] = uuid
-    cp = os.environ.get('CHILD_PID', '0')
-    if cp.isdigit() and int(cp) > 0:
-        target['child_pid'] = int(cp)
 
 snap = d.setdefault('snapshot', {})
 snap['taken_at'] = now