refactor: extract data collection into separate 'collect' plugin

Move collection hooks, scripts, and all skills from claude/code to
new claude/collect plugin. Updates marketplace.json and plugin
descriptions accordingly.

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

.claude-plugin/marketplace.json

@@ -9,7 +9,13 @@
     {
       "name": "code",
       "source": "./claude/code",
-      "description": "Core development plugin - hooks, scripts, data collection skills",
+      "description": "Core development plugin - hooks, formatting, autonomous workflows",
+      "version": "0.1.0"
+    },
+    {
+      "name": "collect",
+      "source": "./claude/collect",
+      "description": "Data collection - whitepapers, forum archives, project archaeology",
       "version": "0.1.0"
     },
     {

claude/code/.claude-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
-  "name": "core-agent",
-  "description": "Advanced Claude Code plugin for Host UK monorepo - core CLI integration, data collection skills, and autonomous workflows",
+  "name": "code",
+  "description": "Core development plugin for Host UK monorepo - core CLI integration, formatting hooks, and autonomous workflows",
   "version": "0.1.0",
   "author": {
     "name": "Host UK",
@@ -17,9 +17,6 @@
     "monorepo",
     "go",
     "php",
-    "laravel",
-    "data-collection",
-    "cryptocurrency",
-    "archive"
+    "laravel"
   ]
 }

claude/collect/.claude-plugin/plugin.json

@@ -0,0 +1,23 @@
+{
+  "name": "collect",
+  "description": "Data collection skills for cryptocurrency research - whitepapers, forum archives, project archaeology, and blockchain history",
+  "version": "0.1.0",
+  "author": {
+    "name": "Host UK",
+    "email": "hello@host.uk.com"
+  },
+  "homepage": "https://github.com/host-uk/core-agent",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/host-uk/core-agent.git"
+  },
+  "license": "EUPL-1.2",
+  "keywords": [
+    "data-collection",
+    "cryptocurrency",
+    "archive",
+    "whitepapers",
+    "blockchain",
+    "research"
+  ]
+}