fix(bootstrap): use "name" instead of "label" for model schema

OpenClaw 2026.4.29 renamed the per-model field from "label" to "name". The
old field is now an Unrecognized key, which fails schema validation at
gateway startup and exits OpenClaw before any HTTP listener binds.

Symptom (v2.1.0 first-launch):
  - models.providers.uclaw-cloud.models.0.name: Invalid input: expected string, received undefined
  - models.providers.uclaw-cloud.models.0: Unrecognized key: "label"
  - throwInvalidConfig() at io-DaEsZ_NY.js:2901 -> process exit

Found via end-to-end H: drive test of v2.1.0 portable zip.

portable/lib/bootstrap-xiapan.mjs

@@ -16,9 +16,9 @@ const DEFAULT_PROVIDER_TEMPLATE = {
   baseUrl: 'https://api.u-claw.org/v1',
   api: 'openai-completions',
   models: [
-    { id: 'deepseek-chat', label: 'DeepSeek Chat' },
-    { id: 'qwen-plus', label: 'Qwen Plus' },
-    { id: 'qwen-turbo', label: 'Qwen Turbo' },
+    { id: 'deepseek-chat', name: 'DeepSeek Chat' },
+    { id: 'qwen-plus', name: 'Qwen Plus' },
+    { id: 'qwen-turbo', name: 'Qwen Turbo' },
   ],
 };
 

u-claw-app/src/lib/bootstrap-xiapan.mjs

@@ -16,9 +16,9 @@ const DEFAULT_PROVIDER_TEMPLATE = {
   baseUrl: 'https://api.u-claw.org/v1',
   api: 'openai-completions',
   models: [
-    { id: 'deepseek-chat', label: 'DeepSeek Chat' },
-    { id: 'qwen-plus', label: 'Qwen Plus' },
-    { id: 'qwen-turbo', label: 'Qwen Turbo' },
+    { id: 'deepseek-chat', name: 'DeepSeek Chat' },
+    { id: 'qwen-plus', name: 'Qwen Plus' },
+    { id: 'qwen-turbo', name: 'Qwen Turbo' },
   ],
 };