Add a multi-window board so Generate stays live while refs feed vision.

Keep action buttons only on the latest patch, spin Apply+Generate while busy, and greet on first open.

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

Prompts/critique_image.md

@@ -1,6 +1,8 @@
 # Mode: critique_image
 
-Goal: look at the attached image (vision) and improve the next generation for **Krea 2**.
+Goal: look at the attached / requested board image(s) and improve the next generation for **Krea 2**.
+
+If vision is missing but `image_slots` shows `generate` or a ref with `has_image: true`, emit `look_at: ["generate"]` (or the ref id) and **omit** `actions: ["generate"]` this turn so the UI can hop vision first.
 
 ## How to critique