feat: add TypeScript installation wizard with @clack/prompts TUI

Replace bash mosaic-init with a modern 9-stage wizard:
- SOUL.md identity, USER.md profile, TOOLS.md configuration
- Runtime detection (Claude, Codex, OpenCode) + MCP setup
- Skills catalog with categorized selection
- Quick Start and Advanced modes
- HeadlessPrompter for --non-interactive and CI usage
- ConfigService abstraction layer for future DB migration
- Bundled as single dist/mosaic-wizard.mjs via tsdown
- mosaic init now prefers wizard when Node.js is available
- 30 tests covering stages, templates, and integration

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -0,0 +1,30 @@
+{
+  "name": "mosaic-wizard",
+  "version": "0.2.0",
+  "type": "module",
+  "private": true,
+  "bin": {
+    "mosaic-wizard": "./dist/mosaic-wizard.mjs"
+  },
+  "scripts": {
+    "build": "tsdown",
+    "dev": "tsx src/index.ts",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "typecheck": "tsc --noEmit"
+  },
+  "dependencies": {
+    "@clack/prompts": "^0.9",
+    "commander": "^13",
+    "picocolors": "^1.1",
+    "yaml": "^2.7",
+    "zod": "^3.24"
+  },
+  "devDependencies": {
+    "@types/node": "^22",
+    "tsdown": "^0.20.3",
+    "tsx": "^4.19",
+    "typescript": "^5.7",
+    "vitest": "^3.0"
+  }
+}