feat(平台): 补齐服务端持久化和AI拆解契约

apps/server/src/modules/ai/providers/anthropic.provider.ts

@@ -0,0 +1,88 @@
+import Anthropic from '@anthropic-ai/sdk';
+import type { AiProvider, PingRequest, PingResponse, ToolCallRequest, ToolCallResponse } from './provider.interface';
+
+/**
+ * Anthropic 格式提供商（官方 API + 兼容 Anthropic 格式的中转站）
+ */
+export class AnthropicProvider implements AiProvider {
+  readonly format = 'anthropic' as const;
+  private client: Anthropic;
+
+  constructor(apiKey: string, baseURL?: string) {
+    this.client = new Anthropic({
+      apiKey,
+      ...(baseURL && baseURL !== 'https://api.anthropic.com' ? { baseURL } : {}),
+    });
+  }
+
+  async callTool(req: ToolCallRequest): Promise<ToolCallResponse> {
+    const toolChoice = req.forceTool
+      ? ({
+          type: 'tool',
+          name: req.tool.name,
+          disable_parallel_tool_use: true,
+        } as any)
+      : { type: 'auto' as const };
+
+    const response = await this.client.messages.create({
+      model: req.model,
+      max_tokens: req.maxTokens,
+      system: req.systemPrompt,
+      tools: [
+        {
+          name: req.tool.name,
+          description: req.tool.description,
+          input_schema: req.tool.inputSchema,
+        },
+      ],
+      tool_choice: toolChoice,
+      messages: [{ role: 'user', content: req.userPrompt }],
+    });
+
+    const toolUse = response.content.find(
+      (c): c is Anthropic.ToolUseBlock => c.type === 'tool_use',
+    );
+    if (!toolUse) {
+      throw new Error(this.describeMissingToolUse(response));
+    }
+
+    return {
+      toolName: toolUse.name,
+      toolInput: toolUse.input as Record<string, any>,
+      inputTokens: response.usage.input_tokens,
+      outputTokens: response.usage.output_tokens,
+      rawModel: response.model,
+    };
+  }
+
+  async ping(req: PingRequest): Promise<PingResponse> {
+    const resp = await this.client.messages.create({
+      model: req.model,
+      max_tokens: 16,
+      messages: [{ role: 'user', content: 'ping' }],
+    });
+    return {
+      ok: true,
+      inputTokens: resp.usage.input_tokens,
+      outputTokens: resp.usage.output_tokens,
+    };
+  }
+
+  private describeMissingToolUse(response: Anthropic.Message): string {
+    const contentSummary = response.content
+      .map((block) => {
+        if (block.type === 'text') {
+          const text = block.text.replace(/\s+/g, ' ').slice(0, 160);
+          return `text("${text}")`;
+        }
+        return block.type;
+      })
+      .join(', ');
+
+    return [
+      'Anthropic 未通过 tool_use 返回结果',
+      `stop_reason=${response.stop_reason || 'unknown'}`,
+      `content=${contentSummary || 'empty'}`,
+    ].join('；');
+  }
+}