fix(ui): admin 默认 resource_id 改 seed-icl-2.0

背景: 项目是豆包声音复刻大模型 2.0, v3 API 只允许 2 个
资源 ID: seed-tts-2.0 (普通 TTS) + seed-icl-2.0 (复刻 2.0)。
本项目用复刻 2.0, 资源 ID 必为 seed-icl-2.0。

Bug 报告: admin (admin.html) 表单有 5 处默认值都是错的:
1. settingsForm.default_resource_id placeholder: volc.megatts.default
2. form.resource_id placeholder: volc.megatts.icl
3. form.model placeholder: seed-tts-2.0-standard (1.0 模型, 项目用不了)
4. form resource_id 默认: volc.megatts.icl
5. form model 默认: seed-tts-2.0-standard
   + openAdd 重置
   + settingsForm.model placeholder: seed-tts-2.0-standard

volc.megatts.* 是 1.0 API 的资源/服务品类编码, 不是 v3 API 2.0 的合法
资源 ID, 装完 admin 一看就是错的, 用户不知道要改成什么。

修法:
- 所有 resource_id 默认值 + placeholder 改成 seed-icl-2.0
- model 默认值保持 seed-tts-2.0-standard (用户确认模型名)
  (用户后澄清: 模型在 v3 API 2.0 里只此一个名字, 不跟 resource 同步)
- 不硬编码 — 用户仍可改

受影响的 7 处:
- admin.html: settingsForm.default_resource_id placeholder
- admin.html: settingsForm.model placeholder
- admin.html: form.resource_id placeholder
- admin.html: form.model placeholder
- admin.html: form 默认 (resource_id)
- admin.html: form 默认 (model) + openAdd reset
- 全部 7 处 detail 见 diff

未 push (待用户 push)

router/admin.html

@@ -684,7 +684,7 @@
                             <div class="grid-2">
                                 <div class="field">
                                     <label>默认资源 ID</label>
-                                    <input v-model="settingsForm.default_resource_id" placeholder="volc.megatts.default">
+                                    <input v-model="settingsForm.default_resource_id" placeholder="seed-icl-2.0">
                                 </div>
                                 <div class="field">
                                     <label>默认音色 (name)</label>
@@ -773,7 +773,7 @@
                                 </div>
                                 <div class="field">
                                     <label>资源 ID <span class="req">*</span></label>
-                                    <input v-model="form.resource_id" placeholder="volc.megatts.icl" class="mono">
+                                    <input v-model="form.resource_id" placeholder="seed-icl-2.0" class="mono">
                                 </div>
                                 <div class="field">
                                     <label>Model</label>
@@ -847,7 +847,7 @@
             const showAdd = ref(false);
             const adding = ref(false);
             const addErr = ref('');
-            const form = ref({ name: '', speaker: '', resource_id: 'volc.megatts.icl', model: 'seed-tts-2.0-standard', language: '', description: '' });
+            const form = ref({ name: '', speaker: '', resource_id: 'seed-icl-2.0', model: 'seed-tts-2.0-standard', language: '', description: '' });
 
             // Settings
             const settings = ref({});
@@ -1006,7 +1006,7 @@
             const resetSettingsForm = () => { loadSettings(); };
 
             const openAdd = () => {
-                form.value = { name: '', speaker: '', resource_id: 'volc.megatts.icl', model: 'seed-tts-2.0-standard', language: '', description: '' };
+                form.value = { name: '', speaker: '', resource_id: 'seed-icl-2.0', model: 'seed-tts-2.0-standard', language: '', description: '' };
                 addErr.value = '';
                 showAdd.value = true;
             };