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>

README.md

@@ -311,7 +311,7 @@ winget install Python.Python.3.12
 
 ### Skill Mode (Auto-activate)
 
-**Supported:** Claude Code, Windsurf, Antigravity, Codex CLI, Continue, Gemini CLI, OpenCode, Qoder, CodeBuddy
+**Supported:** Claude Code, Cursor, Windsurf, Antigravity, Codex CLI, Continue, Gemini CLI, OpenCode, Qoder, CodeBuddy
 
 The skill activates automatically when you request UI/UX work. Just chat naturally:
 
@@ -323,7 +323,7 @@ Build a landing page for my SaaS product
 
 ### Workflow Mode (Slash Command)
 
-**Supported:** Cursor, Kiro, GitHub Copilot, Roo Code
+**Supported:** Kiro, GitHub Copilot, Roo Code
 
 Use the slash command to invoke the skill: