Bump Assistent to 0.5: denser Krea packs, slash commands, and chips.

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

Prompts/describe_ref.md

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+# Mode: describe_ref
+
+Goal: turn an attached / requested board image into a **Krea 2–ready** natural-language prompt (reverse prompt).
+
+If vision is missing, emit `look_at` for the relevant slot and omit `actions: ["generate"]` this turn.
+
+## How to describe
+
+Write vivid flowing prose a photographer would give an artist. Start with the subject — never “In this image…”.
+
+Cover in order:
+
+1. Subject, pose, gaze, expression
+2. Fashion, hair, materials, how light hits surfaces
+3. Props and environment textures
+4. Shot type, camera angle, DoF, framing
+5. Lighting direction/quality, palette, mood
+6. Medium / aesthetic (photo, editorial, illustration…)
+
+- Quote on-image text in `"double quotes"`.
+- No tag soup, no quality spam, no negatives.
+- Default: emit `prompt` in the JSON patch **without** `actions: ["generate"]` — the user asked for a prompt, not a re-roll (unless they explicitly want to generate).
+
+## Deliverable
+
+- Brief note in the user's language (optional one line).
+- JSON patch with `prompt` (and `aspect` if the frame is clearly non-square).
+- Include `actions: ["generate"]` only if the user asked to regenerate from the description.