fix(agents): resolve ContextInjectorService DI error by replacing interface with concrete class

- Replace IKnowledgeClient TypeScript interface (erased at runtime) with KnowledgeClientService concrete class injection
- Fix method signatures to match KnowledgeClientService API:
  - getUserMemories() → getUserTopMemories(), field type → memoryType
  - retrieveForPrompt(query, userId) → retrieveForPrompt({ query, userId })
  - getRelevantExperiences(query, n) → searchExperiences({ query, limit: n }), field type → experienceType
- Remove unused ContextData import

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

packages/services/conversation-service/src/infrastructure/agents/coordinator/context-injector.service.ts

@@ -17,7 +17,6 @@ import { Injectable, Logger } from '@nestjs/common';
 import Anthropic from '@anthropic-ai/sdk';
 import {
   ContextType,
-  ContextData,
   ContextInjectionBlock,
   ContextInjectionResult,
   ContextInjectorConfig,
@@ -27,13 +26,7 @@ import {
   DEFAULT_CONTEXT_CONFIG,
 } from '../types/context.types';
 import { ClaudeMessage } from '../types/agent.types';
-
+import { KnowledgeClientService } from '../../knowledge/knowledge-client.service';
-/** Dependency: knowledge service client */
-export interface IKnowledgeClient {
-  retrieveForPrompt(query: string, userId: string, category?: string): Promise<string>;
-  getUserMemories(userId: string, limit?: number): Promise<Array<{ type: string; content: string; importance: number; createdAt: string }>>;
-  getRelevantExperiences(query: string, limit?: number): Promise<Array<{ type: string; content: string; confidence: number }>>;
-}
 
 @Injectable()
 export class ContextInjectorService {
@@ -42,7 +35,7 @@ export class ContextInjectorService {
   private config: ContextInjectorConfig = DEFAULT_CONTEXT_CONFIG;
 
   constructor(
-    private readonly knowledgeClient: IKnowledgeClient,
+    private readonly knowledgeClient: KnowledgeClientService,
   ) {}
 
   /**
@@ -220,14 +213,14 @@ export class ContextInjectorService {
     }
 
     try {
-      const memories = await this.knowledgeClient.getUserMemories(ctx.userId, 10);
+      const memories = await this.knowledgeClient.getUserTopMemories(ctx.userId, 10);
       if (!memories || memories.length === 0) return null;
 
       const content = [
         `<user_memory>`,
         `用户历史记忆 (${memories.length} 条):`,
         ...memories.map(m =>
-          `  - [${m.type}] ${m.content} (重要度: ${m.importance})`
+          `  - [${m.memoryType}] ${m.content} (重要度: ${m.importance})`
         ),
         `</user_memory>`,
       ].join('\n');
@@ -294,9 +287,9 @@ export class ContextInjectorService {
     }
 
     try {
-      const knowledge = await this.knowledgeClient.retrieveForPrompt(
+      const knowledge = await this.knowledgeClient.retrieveForPrompt({
-        query, ctx.userId,
+        query, userId: ctx.userId,
-      );
+      });
       if (!knowledge) return null;
 
       const content = [
@@ -335,14 +328,14 @@ export class ContextInjectorService {
     if (!query) return null;
 
     try {
-      const experiences = await this.knowledgeClient.getRelevantExperiences(query, 3);
+      const experiences = await this.knowledgeClient.searchExperiences({ query, limit: 3 });
       if (!experiences || experiences.length === 0) return null;
 
       const content = [
         `<system_experiences>`,
         `相关系统经验:`,
         ...experiences.map(e =>
-          `  - [${e.type}] ${e.content} (置信度: ${e.confidence}%)`
+          `  - [${e.experienceType}] ${e.content} (置信度: ${e.confidence}%)`
         ),
         `</system_experiences>`,
       ].join('\n');