feat: 算力引擎 Go 后端核心（new-api）

- 统一 OpenAI 兼容 /v1 中继 + 渠道/额度/令牌/流水 - 各领域包：relay 模型网关、model 数据层、controller 管理 API
2026-08-23 22:38:46 +08:00
commit 28e53d90fc
836 changed files with 165403 additions and 0 deletions
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+{
+  "model": "upstream-model",
+  "messages": [
+    {
+      "role": "system",
+      "content": "You are a helpful assistant."
+    },
+    {
+      "role": "user",
+      "content": [
+        {
+          "type": "text",
+          "text": "What is in this image?"
+        },
+        {
+          "type": "image_url",
+          "image_url": {
+            "url": "data:image/png;base64,aGVsbG8=",
+            "detail": "auto",
+            "MimeType": "image/png"
+          }
+        }
+      ]
+    },
+    {
+      "role": "assistant",
+      "content": null,
+      "tool_calls": [
+        {
+          "id": "call_1",
+          "type": "function",
+          "function": {
+            "name": "get_weather",
+            "arguments": "{\"city\":\"Paris\"}"
+          }
+        }
+      ]
+    },
+    {
+      "role": "tool",
+      "content": "{\"result\":\"15 degrees\"}",
+      "tool_call_id": "call_0"
+    }
+  ],
+  "stream": false,
+  "max_tokens": 1024,
+  "temperature": 0.7,
+  "tools": [
+    {
+      "type": "function",
+      "function": {
+        "description": "Get weather by city",
+        "name": "get_weather",
+        "parameters": {
+          "properties": {
+            "city": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "city"
+          ],
+          "type": "object"
+        }
+      }
+    }
+  ]
+}