feat(model-specs): 新增模型规格库——跨 provider 模型参数统一维护（presetDataVersion 54→58）

* feat(model-specs): 新增模型规格库与 schema 契约

- compute/model-specs/：按厂商维护模型内在参数（上下文窗口/最大输出/能力/serviceType/默认温度，不含价签）
- schemas/model-spec.schema.json：Draft-07 契约，spec 允许 null（新文件不影响老客户端 frozen 契约）
- scripts/validate.mjs：pickSchemaKey 纳入 model-specs 校验
- manifest.presetDataVersion 54→55

* feat(model-specs): 新增小米 MiMo 系列模型规格；bump presetDataVersion 55→56

* feat(model-specs): 补全全量模型规格；presetDataVersion 56→57

* feat(model-specs): 新增 releasedAt/retiredAt 时间戳字段；补充 mimo 退役日期

compute/model-specs/deepseek.json

@@ -0,0 +1,58 @@
+{
+  "description": "DeepSeek 系列模型规格。参数来源：config-center compute/providers/deepseek.json。",
+  "specs": [
+    {
+      "id": "deepseek-chat",
+      "displayName": "DeepSeek Chat",
+      "family": "deepseek-chat",
+      "match": { "patterns": ["deepseek-chat*"] },
+      "spec": {
+        "contextWindow": 1000000,
+        "maxOutputTokens": 384000,
+        "capabilities": ["chat", "code", "reasoning", "multilingual", "tool_use"],
+        "serviceType": ["chat"],
+        "defaultTemperature": 1
+      }
+    },
+    {
+      "id": "deepseek-reasoner",
+      "displayName": "DeepSeek Reasoner",
+      "family": "deepseek-reasoner",
+      "match": { "patterns": ["deepseek-reasoner*"] },
+      "spec": {
+        "contextWindow": 1000000,
+        "maxOutputTokens": 384000,
+        "capabilities": ["chat", "reasoning", "deep_thinking", "code", "math", "tool_use"],
+        "serviceType": ["reasoning"],
+        "defaultTemperature": null,
+        "supportsReasoning": true
+      }
+    },
+    {
+      "id": "deepseek-v4-pro",
+      "displayName": "DeepSeek V4 Pro",
+      "family": "deepseek-v4",
+      "spec": {
+        "contextWindow": 1000000,
+        "maxOutputTokens": 384000,
+        "capabilities": ["chat", "code", "reasoning", "deep_thinking", "multilingual", "tool_use", "math"],
+        "serviceType": ["chat", "reasoning"],
+        "defaultTemperature": 1,
+        "supportsReasoning": true
+      }
+    },
+    {
+      "id": "deepseek-v4-flash",
+      "displayName": "DeepSeek V4 Flash",
+      "family": "deepseek-v4",
+      "spec": {
+        "contextWindow": 1000000,
+        "maxOutputTokens": 384000,
+        "capabilities": ["chat", "code", "reasoning", "deep_thinking", "multilingual", "tool_use"],
+        "serviceType": ["chat", "reasoning"],
+        "defaultTemperature": 1,
+        "supportsReasoning": true
+      }
+    }
+  ]
+}