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-lock.json

@@ -1,17 +1,18 @@
 {
-  "name": "codegraph",
-  "version": "0.1.5",
+  "name": "@colbymchenry/codegraph",
+  "version": "0.1.9",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "codegraph",
-      "version": "0.1.5",
+      "name": "@colbymchenry/codegraph",
+      "version": "0.1.9",
       "license": "MIT",
       "dependencies": {
         "@xenova/transformers": "^2.17.0",
         "better-sqlite3": "^11.0.0",
         "commander": "^14.0.2",
+        "figlet": "^1.8.0",
         "sqlite-vss": "^0.1.2",
         "tree-sitter": "^0.22.4",
         "tree-sitter-c": "^0.23.4",
@@ -33,6 +34,7 @@
       },
       "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"
@@ -879,6 +881,13 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/figlet": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/@types/figlet/-/figlet-1.7.0.tgz",
+      "integrity": "sha512-KwrT7p/8Eo3Op/HBSIwGXOsTZKYiM9NpWRBJ5sVjWP/SmlS+oxxRvJht/FNAtliJvja44N3ul1yATgohnVBV0Q==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/long": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/@types/long/-/long-4.0.2.tgz",
@@ -1464,6 +1473,21 @@
       "integrity": "sha512-/d9sfos4yxzpwkDkuN7k2SqFKtYNmCTzgfEpz82x34IM9/zc8KGxQoXg1liNC/izpRM/MBdt44Nmx41ZWqk+FQ==",
       "license": "MIT"
     },
+    "node_modules/figlet": {
+      "version": "1.9.4",
+      "resolved": "https://registry.npmjs.org/figlet/-/figlet-1.9.4.tgz",
+      "integrity": "sha512-uN6QE+TrzTAHC1IWTyrc4FfGo2KH/82J8Jl1tyKB7+z5DBit/m3D++Iu5lg91qJMnQQ3vpJrj5gxcK/pk4R9tQ==",
+      "license": "MIT",
+      "dependencies": {
+        "commander": "^14.0.0"
+      },
+      "bin": {
+        "figlet": "bin/index.js"
+      },
+      "engines": {
+        "node": ">= 17.0.0"
+      }
+    },
     "node_modules/file-uri-to-path": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz",