fix: self-contained installation for all platforms

- Remove .shared folder dependency - all platforms now self-contained
- Each platform installation includes its own data/ and scripts/
- Update platform configs: reference → full install type
- Simplify template.ts: remove ensureSharedExists logic
- Update Cursor to Skill Mode (auto-activate)
- Update README to reflect Cursor in Skill Mode
- Bump CLI version to 2.2.2

Fixes issue where users couldn't find search.py in shared folder.

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

cli/assets/templates/platforms/cursor.json

@@ -1,18 +1,18 @@
 {
   "platform": "cursor",
   "displayName": "Cursor",
-  "installType": "reference",
+  "installType": "full",
   "folderStructure": {
     "root": ".cursor",
-    "skillPath": "commands",
-    "filename": "ui-ux-pro-max.md"
+    "skillPath": "skills/ui-ux-pro-max",
+    "filename": "SKILL.md"
   },
-  "scriptPath": ".shared/ui-ux-pro-max/scripts/search.py",
+  "scriptPath": "skills/ui-ux-pro-max/scripts/search.py",
   "frontmatter": null,
   "sections": {
     "quickReference": false
   },
   "title": "ui-ux-pro-max",
   "description": "Comprehensive design guide for web and mobile applications. Contains 67 styles, 96 color palettes, 57 font pairings, 99 UX guidelines, and 25 chart types across 13 technology stacks. Searchable database with priority-based recommendations.",
-  "skillOrWorkflow": "Workflow"
+  "skillOrWorkflow": "Skill"
 }