fix: scope Stop hook to per-agent — prevents killing orchestrating CC session

loop.sh

@@ -148,7 +148,8 @@ cd "$PROJECT_ROOT"
 
 cleanup() {
     [ -n "${LOOP_AGENT_TMPFILE:-}" ] && rm -f "$LOOP_AGENT_TMPFILE"
-    [ "$AUTO_HOOKS" = true ] && remove_hooks
+    # Remove hooks in case we exit mid-agent (Ctrl+C during a claude session)
+    [ "$AUTO_HOOKS" = true ] && remove_hooks 2>/dev/null
     release_lock
 }
 
@@ -178,9 +179,8 @@ finish() {
 }
 LOOP_AGENT_TMPFILE=""
 
-if [ "$AUTO_HOOKS" = true ]; then
-    install_hooks
-fi
+# NOTE: Stop hook is installed/removed per-agent in run_agent(), not globally.
+# This prevents the hook from killing the orchestrating CC session.
 trap cleanup EXIT INT TERM
 
 check_archive
@@ -231,8 +231,10 @@ run_agent() {
     local agent_exit=0
     if [ "${LOOP_HEADLESS:-false}" != "true" ]; then
         # --- Interactive mode (Ralph pattern) ---
-        # Pipe prompt to claude without --print — full interactive UI.
-        # The Stop hook handles session exit.
+        # Install Stop hook just before claude starts, remove after it exits.
+        # This scopes the hook to only affect the loop's claude sessions.
+        [ "$AUTO_HOOKS" = true ] && install_hooks
+
         (
             case "$TOOL" in
                 claude)
@@ -248,6 +250,7 @@ run_agent() {
             esac
         ) || agent_exit=$?
 
+        [ "$AUTO_HOOKS" = true ] && remove_hooks
         sleep 2  # Brief pause between sessions
 
         # Read verdict from file if evaluator wrote one