Add todo app git hooks

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

.pre-commit-config.yaml

@@ -21,6 +21,7 @@ default_language_version:
 default_stages: [pre-commit]
 fail_fast: false
 
+default_install_hook_types: [pre-commit, pre-push, post-commit, post-merge, post-rewrite]
 repos:
   # Landed 2026-08-29, the day the archive first reached zero ruff findings
   # repo-wide. Pinned exactly, per rules/dependency-freshness: 0.16.5 is the
@@ -97,6 +98,30 @@ repos:
         language: system
         files: \.(md|markdown)$
 
+      - id: todo-closer
+        name: close Todo trailer tasks
+        entry: scripts/todo_hooks.sh closer
+        language: system
+        stages: [post-commit]
+        always_run: true
+        pass_filenames: false
+
+      - id: todo-import-pr-merge
+        name: import PR Todo sections (pull)
+        entry: scripts/todo_hooks.sh import-pr post-merge
+        language: system
+        stages: [post-merge]
+        always_run: true
+        pass_filenames: false
+
+      - id: todo-import-pr-rewrite
+        name: import PR Todo sections (pull --rebase)
+        entry: scripts/todo_hooks.sh import-pr post-rewrite
+        language: system
+        stages: [post-rewrite]
+        always_run: true
+        pass_filenames: false
+
       # CLAUDE.md has always said a hook rejects these. Now one does.
       - id: no-suppressions
         name: no noqa or type-ignore comments

scripts/todo_hooks.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+# Shim: forward to the shared todo git hooks in ~/src/utils (silent if absent).
+set -euo pipefail
+
+readonly SHARED="${UTILS_ROOT:-$HOME/src/utils}/scripts/todo_hooks.sh"
+
+main() {
+    [[ -f "$SHARED" ]] || exit 0
+    exec bash "$SHARED" "$@"
+}
+
+main "$@"