- Merge TestWatchForConfigChangesIncludeAdded and
TestWatchForConfigChangesIncludeRemoved into the main
TestWatchForConfigChanges function, which now starts the watcher
once and shares it across all integration subtests.
- Add prime_watcher helper that retries writes until an action fires,
replacing the blind time.Sleep(200ms) watcher-startup wait.
- Add new subtest "include added to already-included file adds its
parent dir": writes an include directive into sub/included.conf
(itself included from kitty.conf), then verifies that changes to
the newly referenced file trigger the action, confirming its parent
directory was added to the watch set.
- Fix TestWatchForConfigChangesDebounce to use prime_watcher instead
of time.Sleep for startup; capture before_burst baseline before the
burst loop so the burst-action count is computed correctly.
