feat: additional functionality and layout adjustments for season teamers

src/Config/SeasonChecklistStatus.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Config;
+
+/**
+ * How far the office has worked through one season assignment's checklist.
+ *
+ * Derived from the rows by App\Service\Season\SeasonChecklistBuilder, never stored: the two
+ * completed stages follow from the entries themselves, so a column would only be a second,
+ * hand-maintained copy of what the rows already say.
+ */
+enum SeasonChecklistStatus: string
+{
+    case OPEN = 'open';
+
+    /**
+     * Everything the teamer has to send back has arrived and been ticked off, so the weekly
+     * digest has nothing left to chase. Office-internal entries can still be open.
+     */
+    case RETURNS_COMPLETE = 'returns_complete';
+
+    case COMPLETE = 'complete';
+}