Add interactive CLI installer for Claude Code integration

- New `codegraph install` command and auto-run when invoked with no args
- Beautiful ASCII banner using figlet
- Interactive prompts for global (~/.claude) or local (./.claude) installation
- Writes MCP server config to claude.json
- Writes auto-allow permissions to settings.json
- For local installs: auto-initializes project, indexes, and installs git hooks

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

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@colbymchenry/codegraph",
-  "version": "0.1.9",
+  "version": "0.2.0",
   "description": "A local-first code intelligence system that builds a semantic knowledge graph from any codebase",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
@@ -31,6 +31,7 @@
   "license": "MIT",
   "dependencies": {
     "@xenova/transformers": "^2.17.0",
+    "figlet": "^1.8.0",
     "better-sqlite3": "^11.0.0",
     "commander": "^14.0.2",
     "sqlite-vss": "^0.1.2",
@@ -51,6 +52,7 @@
   },
   "devDependencies": {
     "@types/better-sqlite3": "^7.6.0",
+    "@types/figlet": "^1.5.8",
     "@types/node": "^20.19.30",
     "typescript": "^5.0.0",
     "vitest": "^2.0.0"