Add website static image slots with page grouping and bilingual captions.

Co-authored-by: Cursor <cursoragent@cursor.com>

database/migrations/066_website_static_image_captions.sql

@@ -0,0 +1,14 @@
+-- Bilingual titles + subtext on each static image item
+
+ALTER TABLE website_image_slot_items
+  ADD COLUMN IF NOT EXISTS title_fa VARCHAR(255);
+
+ALTER TABLE website_image_slot_items
+  ADD COLUMN IF NOT EXISTS title_en VARCHAR(255);
+
+ALTER TABLE website_image_slot_items
+  ADD COLUMN IF NOT EXISTS subtext VARCHAR(500);
+
+UPDATE website_image_slot_items
+SET title_fa = title
+WHERE title_fa IS NULL AND title IS NOT NULL;