✨ Add dioxus and project-uv plugins

Introduce two new plugins: dioxus and project-uv with metadata
READMEs and SKILL documentation and example skill files
Update marketplace.json to advertise both plugins

.claude-plugin/marketplace.json

@@ -9,6 +9,16 @@
       "name": "g4b_ai",
       "source": "./plugins/g4b_ai",
       "description": "Gabor's personal Claude Code skills: workpad, research-tree, implementation-orchestration, markdown-embedded-svg"
+    },
+    {
+      "name": "dioxus",
+      "source": "./plugins/dioxus",
+      "description": "Per-version Dioxus Rust UI library reference skills (currently 0.7)"
+    },
+    {
+      "name": "project-uv",
+      "source": "./plugins/project-uv",
+      "description": "Detects how uv is wired into a Python project and advertises the right invocation patterns"
     }
   ]
 }