fix(#4081): decode git C-quoted paths in codebase-drift --name-status parser (#4307)

* test(#4081): failing-first regression for quotepath C-quoted paths in codebase-drift

* fix(#4081): decode git C-quoted paths in codebase-drift --name-status parse

* test(#4081): set drift_threshold 1 so decoded-path test triggers action_required

* chore(#4081): add changeset fragment

* chore(#4081): fix changeset fragment formatting

* chore(#4081): backfill PR number in changeset

---------

Co-authored-by: sim <sim@local>

src/worktree-safety.cts

@@ -674,6 +674,11 @@ const SUMMARY_ARTIFACT_SUFFIX = 'SUMMARY.md';
  * (a trailing lone backslash, or an octal escape with fewer than three
  * digits) never throws — it degrades to treating the character literally, so
  * a single bad path can never take down the whole cleanup wave.
+ *
+ * Exported (#4081) so the codebase-drift gate's `--name-status` parser can
+ * decode the identical C-quoted form before classifying paths — the gate's
+ * `execGit` call sets no `core.quotepath` config, so it receives the same
+ * quoting and must decode it with the same single owner of this seam.
  */
 function decodeGitQuotedPath(raw: string): string {
   if (raw.length < 2 || !raw.startsWith('"') || !raw.endsWith('"')) return raw;
@@ -2303,6 +2308,9 @@ function pruneOrphanedWorktrees(repoRoot: string, deps: WorktreeDeps & { writeEr
 }
 
 export = {
+  // Re-exported for the codebase-drift gate's --name-status parser (#4081):
+  // single owner of git C-quoted-path decoding.
+  decodeGitQuotedPath,
   resolveWorktreeContext,
   resolveWorktreeLinkage,
   parseWorktreePorcelain,