fix(preflight): unify review worktree regex, resolve Web UI NameError, and fix test isolation

webui/worktree_scanner.py

@@ -14,11 +14,7 @@ from merged_cleanup_reconcile import (
     read_issue_lock,
     read_local_worktree_state,
 )
-
-_REVIEW_WORKTREE_RE = re.compile(
-    r"branches/(?:review-pr\d+|merge-simulation-pr\d+|review-[\w-]+)",
-    re.IGNORECASE,
-)
+from reviewer_worktree import REVIEW_WORKTREE_RE
 
 CLASSIFICATIONS = frozenset({
     "active-pr",
@@ -147,7 +143,7 @@ def classify_entry(
     if not record:
         return "orphan", "Directory exists but is not a registered git worktree"
 
-    if record.get("detached") and _REVIEW_WORKTREE_RE.search(rel_path):
+    if record.get("detached") and REVIEW_WORKTREE_RE.search(rel_path):
         return "detached-review", "Detached HEAD in reviewer/simulation worktree"
 
     if state.get("exists") and state.get("clean"):