Add spec-driven marketplace icon (#118)

Merged: adds marketplace icon for Spec Driven plugin.

Author: Habib0x0

.agents/plugins/marketplace.json

@@ -375,6 +375,7 @@
         "source": "local",
         "path": "./plugins/Habib0x0/spec-driven-plugin"
       },
+      "icon": "./plugins/Habib0x0/spec-driven-plugin/assets/spec-driven-icon.svg",
       "policy": {
         "installation": "AVAILABLE",
         "authentication": "ON_INSTALL"

plugins/Habib0x0/spec-driven-plugin/.codex-plugin/plugin.json

@@ -13,6 +13,7 @@
   "skills": "./skills/",
   "interface": {
     "displayName": "Spec Driven",
+    "composerIcon": "./assets/spec-driven-icon.svg",
     "shortDescription": "Turn feature ideas into requirements, design docs, tasks, and execution loops.",
     "longDescription": "A structured spec-driven development workflow for Codex. It guides features through brainstorming, EARS requirements, technical design, task breakdown, validation, execution, and post-completion review.",
     "developerName": "habib0x",