feat(lint-org): flag level-2 dated headers as a completion defect

A `** <YYYY-MM-DD> …` heading carries no keyword, so todo-cleanup's --archive-done can never archive it and task-review drops it from selection. The new level-2-dated-header check (custom, like org-table-standard) emits a judgment item per offending heading so the wrap-up sweep routes it to the next morning's review. Judgment-only, never auto-fixed: the repair needs a DONE-vs-CANCELLED call and the original heading text. Three ERT cases cover it (flagged at level 2, clean for DONE+CLOSED, clean for a level-3 dated entry).

2 files changed, 53 insertions, 0 deletions

diff --git a/.ai/scripts/lint-org.el b/.ai/scripts/lint-org.el
index 8f55cc6..3633dba 100644
--- a/.ai/scripts/lint-org.el
+++ b/.ai/scripts/lint-org.el
@@ -368,6 +368,31 @@ Emits one judgment item per violating table."
                      (string-join violations "; ")))))))))
 
 ;;; ---------------------------------------------------------------------------
+;;; level-2 dated-header check (claude-rules/todo-format.md)
+;;
+;; A completed task or resolved VERIFY at level 2 must carry a terminal
+;; keyword (DONE/CANCELLED + CLOSED:), never a dated heading.  A `** <date>'
+;; header has no keyword, so todo-cleanup's --archive-done can never archive
+;; it (it accumulates in Open Work forever) and task-review drops it from
+;; selection.  Judgment-only, never auto-fixed: the repair needs a
+;; DONE-vs-CANCELLED call and the original heading text, which is a judgment
+;; the sweep can't make.  Targets todo/task files; a dated-log-format org
+;; file using `** <date>' headings intentionally will false-positive here, in
+;; which case the human dismisses the judgment item.
+
+(defun lo--check-level2-dated-headers ()
+  "Flag level-2 headings whose text begins with a YYYY-MM-DD date.
+Emits one judgment item per offending heading (checker
+`level-2-dated-header')."
+  (save-excursion
+    (goto-char (point-min))
+    (while (re-search-forward
+            "^\\*\\* \\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\}\\)" nil t)
+      (lo--emit-judgment
+       'level-2-dated-header (line-number-at-pos)
+       "level-2 dated header is a completion defect (todo-format.md): a ** task or VERIFY closes with DONE/CANCELLED + CLOSED:, not a dated heading — convert it so --archive-done can archive it"))))
+
+;;; ---------------------------------------------------------------------------
 ;;; File processing
 
 (defun lo--backup (file)
@@ -401,6 +426,8 @@ left unmodified and mechanical entries are recorded with :preview t."
           ;; After org-lint items: the custom table-standard scan. Runs on the
           ;; post-fix buffer; judgment-only, so order doesn't perturb fixes.
           (lo--check-tables)
+          ;; Same shape: flag level-2 dated headers (completion defects).
+          (lo--check-level2-dated-headers)
           (when (and (not lo-check-only) (buffer-modified-p))
             (save-buffer)))
       (with-current-buffer buf (set-buffer-modified-p nil))
diff --git a/.ai/scripts/tests/test-lint-org.el b/.ai/scripts/tests/test-lint-org.el
index 3a83602..242c35c 100644
--- a/.ai/scripts/tests/test-lint-org.el
+++ b/.ai/scripts/tests/test-lint-org.el
@@ -659,5 +659,31 @@ missing-rules violation."
          (judgments (lo-test--judgments (plist-get run :issues))))
     (should-not (memq 'org-table-standard (lo-test--checkers judgments)))))
 
+;;; ---------------------------------------------------------------------------
+;;; level-2 dated-header check (claude-rules/todo-format.md)
+
+(ert-deftest lo-level2-dated-header-is-judgment ()
+  "A level-2 heading beginning with a YYYY-MM-DD date is flagged."
+  (let* ((out (lo-test--run
+               "* Open Work\n\n** 2026-06-20 Sat @ 10:00:00 -0500 Something resolved\nBody.\n"))
+         (res (plist-get out :result))
+         (judgments (lo-test--judgments (plist-get out :issues))))
+    (should (= 0 (plist-get out :fixes)))      ; judgment-only, never auto-fixed
+    (should (member 'level-2-dated-header (lo-test--checkers judgments)))))
+
+(ert-deftest lo-level2-done-task-not-flagged ()
+  "A level-2 task closed with a terminal keyword + CLOSED: is fine."
+  (let* ((out (lo-test--run
+               "* Open Work\n\n** DONE [#B] Something resolved\nCLOSED: [2026-06-20 Sat]\nBody.\n"))
+         (judgments (lo-test--judgments (plist-get out :issues))))
+    (should-not (member 'level-2-dated-header (lo-test--checkers judgments)))))
+
+(ert-deftest lo-level3-dated-entry-not-flagged ()
+  "A dated event-log entry at level 3 is the correct sub-task shape, not a defect."
+  (let* ((out (lo-test--run
+               "* Open Work\n\n** TODO [#B] Parent task\n*** 2026-06-20 Sat @ 10:00:00 -0500 sub-entry landed\nBody.\n"))
+         (judgments (lo-test--judgments (plist-get out :issues))))
+    (should-not (member 'level-2-dated-header (lo-test--checkers judgments)))))
+
 (provide 'test-lint-org)
 ;;; test-lint-org.el ends here