Add command modules and tests; commit remaining changes

package.json

@@ -40,7 +40,8 @@
     "json5": "^2.2.3",
     "pino": "^10.1.0",
     "qrcode-terminal": "^0.12.0",
-    "twilio": "^5.10.6"
+    "twilio": "^5.10.6",
+    "zod": "^4.1.13"
   },
   "devDependencies": {
     "@biomejs/biome": "^2.3.7",
@@ -67,7 +68,7 @@
         "statements": 70
       },
       "include": [
-        "src/utils.ts"
+        "src/**/*.ts"
       ],
       "exclude": [
         "src/**/*.test.ts"