docs(images): add wireframing tools & Figma MCP documentation

- Add Wireframing Tools section (Excalidraw, tldraw, Frame0, Paper+Photo)
- Add Figma MCP Integration with official setup and workflow
- Add Image Optimization for Claude Vision (resolution, tokens, formats)
- Create examples/mcp-configs/figma.json config template
- Update reference.yaml with new entries and shifted line numbers

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

examples/mcp-configs/figma.json

@@ -0,0 +1,13 @@
+{
+  "mcpServers": {
+    "figma": {
+      "transport": "http",
+      "url": "https://mcp.figma.com/mcp"
+    },
+    "figma-desktop": {
+      "transport": "http",
+      "url": "http://127.0.0.1:3845/mcp",
+      "comment": "Requires Figma desktop app with Dev Mode enabled"
+    }
+  }
+}