test: add 38 tests for org-agenda-config and org-refile-config

- testutil-org.el: shared dynamic timestamp helpers (days-ago, days-ahead, today)
- org-agenda-config: 31 tests across 2 files (skip functions + add-files)
- org-refile-config: 7 tests for ensure-org-mode validation
- Remove prog-shell from checklist (fully covered by existing 9 tests)

1 files changed, 32 insertions, 0 deletions

diff --git a/tests/testutil-org.el b/tests/testutil-org.el
new file mode 100644
index 00000000..c1949981
--- /dev/null
+++ b/tests/testutil-org.el
@@ -0,0 +1,32 @@
+;;; testutil-org.el --- Test utilities for org-mode tests -*- lexical-binding: t; -*-
+;;
+;; Author: Craig Jennings <c@cjennings.net>
+;;
+;;; Commentary:
+;; Utilities for testing org-mode related modules.
+;; Provides dynamic timestamp generation for deterministic date-sensitive tests.
+;; No hardcoded dates — all timestamps generated relative to current time.
+;;
+;; See also: testutil-calendar-sync.el for iCal-specific timestamp utilities.
+
+;;; Code:
+
+(defun test-org-timestamp-days-ago (days)
+  "Generate org timestamp string for DAYS ago.
+Returns string like \"<2026-02-10 Tue>\"."
+  (format-time-string "<%Y-%m-%d %a>"
+                      (time-subtract (current-time) (* days 86400))))
+
+(defun test-org-timestamp-days-ahead (days)
+  "Generate org timestamp string for DAYS from now.
+Returns string like \"<2026-02-20 Fri>\"."
+  (format-time-string "<%Y-%m-%d %a>"
+                      (time-add (current-time) (* days 86400))))
+
+(defun test-org-timestamp-today ()
+  "Generate org timestamp string for today.
+Returns string like \"<2026-02-15 Sun>\"."
+  (format-time-string "<%Y-%m-%d %a>"))
+
+(provide 'testutil-org)
+;;; testutil-org.el ends here