fix(org-export): remove contradictory org-export-with-tasks default

org-export-config.el set org-export-with-tasks twice in a row — first to ("TODO"), then to nil. The final value won (export no tasks), but the stale first assignment and its "export with tasks by default" comment contradicted it, so the intended policy was ambiguous on a read.

Removed the leftover ("TODO") line. nil is the deliberate default: it is the value that was already winning, its comment matches, and it sits with the adjacent "export without tags / section numbers by default" settings. Added a smoke test that fires the deferred ox :config and pins org-export-with-tasks to nil so a future flip is caught.

1 files changed, 22 insertions, 0 deletions

diff --git a/tests/test-org-export-config-task-default.el b/tests/test-org-export-config-task-default.el
new file mode 100644
index 00000000..850249c9
--- /dev/null
+++ b/tests/test-org-export-config-task-default.el
@@ -0,0 +1,22 @@
+;;; test-org-export-config-task-default.el --- Org export task-default test -*- lexical-binding: t; -*-
+
+;;; Commentary:
+;; org-export-config.el used to set `org-export-with-tasks' twice in a row
+;; ('("TODO") then nil), leaving the final behavior ("export no tasks")
+;; contradicted by the adjacent comment.  Requiring the module then ox fires
+;; the deferred :config in batch, so this test pins the single intended
+;; default: tasks are not exported.
+
+;;; Code:
+
+(require 'ert)
+(require 'org)
+(require 'org-export-config)
+(require 'ox)
+
+(ert-deftest test-org-export-config-tasks-default-is-nil ()
+  "Normal: after ox config loads, tasks are excluded from export by default."
+  (should (null org-export-with-tasks)))
+
+(provide 'test-org-export-config-task-default)
+;;; test-org-export-config-task-default.el ends here