refactor: defaultTemperature/defaultTopP 从 Provider 级别迁移到 Model 级别

- 删除所有 Provider 顶层的 defaultTemperature / defaultTopP
- 为所有对话类模型添加 model 级别的推荐温度参数（基于官方文档）
- volcengine：将 extra 内温度参数提升到模型顶层正式字段
- presetDataVersion 7→8

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

compute/providers/volcengine.json

@@ -19,8 +19,6 @@
     "simultaneous_interpret",
     "translation"
   ],
-  "defaultTemperature": 0.7,
-  "defaultTopP": 0.9,
   "models": [
     {
       "modelName": "doubao-2.0-pro",
@@ -39,6 +37,8 @@
       ],
       "inputPrice": 3.2,
       "outputPrice": 16,
+      "defaultTemperature": 0.7,
+      "defaultTopP": 0.9,
       "extra": {}
     },
     {
@@ -58,6 +58,8 @@
       ],
       "inputPrice": 0.8,
       "outputPrice": 2,
+      "defaultTemperature": 0.7,
+      "defaultTopP": 0.9,
       "extra": {}
     },
     {
@@ -77,6 +79,8 @@
       ],
       "inputPrice": 0.8,
       "outputPrice": 8,
+      "defaultTemperature": 0.7,
+      "defaultTopP": 0.9,
       "extra": {}
     },
     {
@@ -95,6 +99,7 @@
       ],
       "inputPrice": 0.8,
       "outputPrice": 8,
+      "defaultTemperature": 0.3,
       "extra": {}
     },
     {
@@ -112,6 +117,8 @@
       ],
       "inputPrice": 0.15,
       "outputPrice": 1.5,
+      "defaultTemperature": 0.7,
+      "defaultTopP": 0.9,
       "extra": {}
     },
     {
@@ -128,6 +135,8 @@
       ],
       "inputPrice": 0.3,
       "outputPrice": 0.6,
+      "defaultTemperature": 0.7,
+      "defaultTopP": 0.9,
       "extra": {}
     },
     {
@@ -146,6 +155,8 @@
       ],
       "inputPrice": 0.8,
       "outputPrice": 8,
+      "defaultTemperature": 0.7,
+      "defaultTopP": 0.9,
       "extra": {}
     },
     {
@@ -163,9 +174,8 @@
       ],
       "inputPrice": 1.2,
       "outputPrice": 8,
-      "extra": {
-        "defaultTemperature": 0.3
-      }
+      "defaultTemperature": 0.3,
+      "extra": {}
     },
     {
       "modelName": "deepseek-v3.2",
@@ -182,10 +192,9 @@
       ],
       "inputPrice": 2,
       "outputPrice": 3,
-      "extra": {
-        "defaultTemperature": 1,
-        "defaultTopP": 1
-      }
+      "defaultTemperature": 1,
+      "defaultTopP": 1,
+      "extra": {}
     },
     {
       "modelName": "deepseek-r1",
@@ -203,10 +212,9 @@
       ],
       "inputPrice": 4,
       "outputPrice": 16,
-      "extra": {
-        "defaultTemperature": 1,
-        "defaultTopP": 1
-      }
+      "defaultTemperature": 1,
+      "defaultTopP": 1,
+      "extra": {}
     },
     {
       "modelName": "kimi-k2-volcengine",
@@ -225,6 +233,8 @@
       ],
       "inputPrice": 4,
       "outputPrice": 16,
+      "defaultTemperature": 0.7,
+      "defaultTopP": 0.9,
       "extra": {}
     },
     {
@@ -244,6 +254,8 @@
       ],
       "inputPrice": 4,
       "outputPrice": 16,
+      "defaultTemperature": 0.7,
+      "defaultTopP": 0.9,
       "extra": {}
     },
     {