fix: Add retry logic to final GitHub status update

The final GitHub status update in progress_type_request() was not using
retry logic, causing tests to complete but remain stuck in "pending" state
on GitHub if the status update failed (e.g., due to rate limiting or
network issues).

This is the same fix applied to mark_test_failed() in PR #976, now applied
to the normal test completion path.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: cfsmp3

mod_ci/controllers.py

@@ -1933,8 +1933,16 @@ def progress_type_request(log, test, test_id, request) -> bool:
     else:
         message = progress.message
 
-    gh_commit = repository.get_commit(test.commit)
-    update_status_on_github(gh_commit, state, message, context, target_url=target_url)
+    # Use retry logic for final GitHub status update to prevent stuck "pending" states
+    # This is critical - if this fails, the PR will show "Tests queued" forever
+    try:
+        def update_final_status():
+            gh_commit = repository.get_commit(test.commit)
+            update_status_on_github(gh_commit, state, message, context, target_url=target_url)
+
+        retry_with_backoff(update_final_status, max_retries=3, initial_backoff=2.0)
+    except Exception as e:
+        log.error(f"Test {test_id}: Failed to update final GitHub status after retries: {e}")
 
     if status in [TestStatus.completed, TestStatus.canceled]:
         # Delete the current instance