fix(dashscope): Token Plan 回退为客户端兼容字段 (#15)

线上客户端 schema 尚未支持 tokenPlan/accessMode:"token-plan"，
同步后导致 compute.json 校验失败。临时回退为 codingPlan + coding-plan，
待主仓库升级 schema 后再切换为语义正确的字段。

Author: 124608760

compute/coding-plans/dashscope-token-plan.json

@@ -10,16 +10,16 @@
   "apiKeyVerified": false,
   "enabled": false,
   "status": "unconfigured",
-  "accessMode": "token-plan",
+  "accessMode": "coding-plan",
   "services": [
     "chat",
     "reasoning",
     "image_gen"
   ],
-  "tokenPlan": {
+  "codingPlan": {
     "quotas": {},
     "usageTracking": {
-      "method": "credits",
+      "method": "none",
       "consoleUrl": "https://bailian.console.aliyun.com/"
     }
   },