Add model selector command + fix Lrucache for v6-7 support

package.json

@@ -20,17 +20,18 @@
   "license": "MIT",
   "dependencies": {
     "@fastify/static": "^8.2.0",
+    "@inquirer/prompts": "^5.0.0",
     "@musistudio/llms": "^1.0.35",
     "dotenv": "^16.4.7",
     "find-process": "^2.0.0",
     "json5": "^2.2.3",
+    "lru-cache": "^11.2.2",
     "minimist": "^1.2.8",
     "openurl": "^1.1.1",
     "rotating-file-stream": "^3.2.7",
     "shell-quote": "^1.8.3",
     "tiktoken": "^1.0.21",
-    "uuid": "^11.1.0",
-    "@inquirer/prompts": "^5.0.0"
+    "uuid": "^11.1.0"
   },
   "devDependencies": {
     "@types/node": "^24.0.15",