fix(skill): resolve hardcoded planner session name and plan file paths dynamically in run_loop.sh

.agents/skills/multi-agent-mux-loop/scripts/run_loop.sh

@@ -185,7 +185,7 @@ resolve_planner_session() {
   MAM_STATE_JSON="$(load_state_json)" python3 -c "
 import os, json
 d = json.loads(os.environ.get('MAM_STATE_JSON', '{}'))
-planner = 'canary-projects-multi-agent-mux-planner-reviewer-claude'
+planner = ''
 for s in d.get('tmux_sessions', []):
     if 'planner' in s.get('role', ''):
         planner = s.get('name')
@@ -312,8 +312,11 @@ if [ "$PLAN_MODE" = true ]; then
   log_success "Interactive planning completed. Plan finalized."
 else
   log_info "=== Phase 1: Self-Planning Mode (Direct Execution) ==="
-  EXISTING_PLAN_FILE=".agents/reports/canary-projects-multi-agent-mux-planner-reviewer-claude/report-final.md"
-  if [ -f "$EXISTING_PLAN_FILE" ]; then
+  EXISTING_PLAN_FILE=""
+  if [ -n "$PLANNER_SESSION" ]; then
+    EXISTING_PLAN_FILE=".agents/reports/$PLANNER_SESSION/report-final.md"
+  fi
+  if [ -n "$EXISTING_PLAN_FILE" ] && [ -f "$EXISTING_PLAN_FILE" ]; then
     log_info "Found existing promoted plan at '$EXISTING_PLAN_FILE'. Loading plan..."
     CURRENT_PLAN=$(cat "$EXISTING_PLAN_FILE")
   fi