Refactor code structure for improved readability and maintainability

assistant/package.json

@@ -52,7 +52,7 @@
     "@kevisual/router": "^0.1.1",
     "@kevisual/types": "^0.0.12",
     "@kevisual/use-config": "^1.0.30",
-    "@opencode-ai/plugin": "^1.2.24",
+    "@opencode-ai/plugin": "^1.2.26",
     "@types/bun": "^1.3.10",
     "@types/node": "^25.5.0",
     "@types/send": "^1.2.1",
@@ -77,15 +77,15 @@
     "access": "public"
   },
   "dependencies": {
-    "@aws-sdk/client-s3": "^3.1008.0",
+    "@aws-sdk/client-s3": "^3.1009.0",
     "@kevisual/js-filter": "^0.0.6",
     "@kevisual/oss": "^0.0.20",
     "@kevisual/video-tools": "^0.0.13",
-    "@opencode-ai/sdk": "^1.2.24",
+    "@opencode-ai/sdk": "^1.2.26",
     "es-toolkit": "^1.45.1",
     "eventemitter3": "^5.0.4",
     "lowdb": "^7.0.1",
-    "lru-cache": "^11.2.6",
+    "lru-cache": "^11.2.7",
     "pm2": "^6.0.14",
     "unstorage": "^1.17.4",
     "zod": "^4.3.6"