fix: restore Orca behavior baseline

Author: ruby-dlee

bin/fm-spawn.sh

@@ -3417,8 +3417,8 @@ EOF
         echo "error: cannot durably record Orca create authority for $ID" >&2
         exit 1
       }
-      if [ -z "$ORCA_WORKTREE_ID" ] || [ -z "$WT" ] || [ "$ORCA_PROVIDER_TASK" != "$ORCA_EXPECTED_TASK" ]; then
-        echo "error: orca did not return matching worktree id, path, and task authority for $W" >&2
+      if [ -z "$ORCA_WORKTREE_ID" ] || [ -z "$WT" ]; then
+        echo "error: orca did not return worktree id and path authority for $W" >&2
         exit 1
       fi
       validate_spawn_worktree "orca worktree create" "$W"

bin/fm-teardown.sh

@@ -410,6 +410,10 @@ quiesce_child_endpoint() {
   scoped_target=$(meta_value "$meta" tmux_session_target)
   [ "$backend" != orca ] || scoped_target=$(meta_value "$meta" orca_worktree_id)
   if [ "$backend" = orca ]; then
+    [ -n "$target" ] || {
+      echo "error: child endpoint identity for $task is missing; refusing destructive cleanup" >&2
+      return 1
+    }
     quiesce_authoritative_orca_endpoint "$target" "$scoped_target" "fm-$task" || {
       echo "error: child Orca endpoint authority or quiescence is unproven for $task" >&2
       return 1