test(linkedin): verify mcp-image text-overlay capability for carousel slides

Text overlay VERIFIED: Nano Banana Pro renders readable text on dark
gradient backgrounds at 3:4 aspect ratio (closest to LinkedIn 4:5).
Header and subtitle both legible. Mermaid Chart available but untested.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

plugins/linkedin-thought-leadership/commands/carousel.md

@@ -4,13 +4,17 @@ description: |
   Create a LinkedIn carousel post with structured slide-by-slide content and visual layout guidance.
   Carousels have the highest engagement rate (6.6%) on LinkedIn. Guides template selection,
   topic definition, and generates copy for each slide plus caption.
+  Optionally generates slide images via mcp-image (Nano Banana Pro).
   Triggers on: "carousel", "slide deck", "pdf post", "swipe post", "multi-slide",
   "linkedin carousel", "document post", "create slides".
 allowed-tools:
   - Read
   - Bash
   - AskUserQuestion
+  - mcp__mcp-image__generate_image
 ---
+<!-- MCP_IMAGE_TEXT_OVERLAY: VERIFIED -->
+<!-- MERMAID_CHART_RESOLUTION: UNTESTED -->
 
 # Carousel Post Generator