feat: add memory system and troubleshoot agent

Memory System:
- Add category-based memory storage (company, tech, role, location, server)
- Silent background saving via saveMemorySilently()
- Category-based overwrite (same category replaces old memory)
- Server-related pattern detection (AWS, GCP, k8s, traffic info)
- Memory management tool (list, delete)

Troubleshoot Agent:
- Session-based troubleshooting conversation (KV, 1h TTL)
- 20-year DevOps/SRE expert persona
- Support for server/infra, domain/DNS, code/deploy, network, database issues
- Internal tools: search_solution (Brave), lookup_docs (Context7)
- Auto-trigger on error-related keywords
- Session completion and cancellation support

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/tools/index.ts

@@ -9,6 +9,7 @@ import { searchWebTool, lookupDocsTool, executeSearchWeb, executeLookupDocs } fr
 import { manageDomainTool, suggestDomainsTool, executeManageDomain, executeSuggestDomains } from './domain-tool';
 import { manageDepositTool, executeManageDeposit } from './deposit-tool';
 import { manageServerTool, executeManageServer } from './server-tool';
+import { manageTroubleshootTool, executeManageTroubleshoot } from './troubleshoot-tool';
 import { getCurrentTimeTool, calculateTool, executeGetCurrentTime, executeCalculate } from './utility-tools';
 import { redditSearchTool, executeRedditSearch } from './reddit-tool';
 import type { Env } from '../types';
@@ -78,6 +79,10 @@ const ManageServerArgsSchema = z.object({
   message: z.string().min(1).max(500).optional(),  // For continue_consultation
 });
 
+const ManageTroubleshootArgsSchema = z.object({
+  action: z.enum(['start', 'cancel']),
+});
+
 // All tools array (used by OpenAI API)
 export const tools = [
   weatherTool,
@@ -88,6 +93,7 @@ export const tools = [
   manageDomainTool,
   manageDepositTool,
   manageServerTool,
+  manageTroubleshootTool,
   suggestDomainsTool,
   redditSearchTool,
 ];
@@ -97,6 +103,7 @@ export const TOOL_CATEGORIES: Record<string, string[]> = {
   domain: [manageDomainTool.function.name, suggestDomainsTool.function.name],
   deposit: [manageDepositTool.function.name],
   server: [manageServerTool.function.name],
+  troubleshoot: [manageTroubleshootTool.function.name],
   weather: [weatherTool.function.name],
   search: [searchWebTool.function.name, lookupDocsTool.function.name],
   reddit: [redditSearchTool.function.name],
@@ -108,6 +115,7 @@ export const CATEGORY_PATTERNS: Record<string, RegExp> = {
   domain: /도메인|네임서버|whois|dns|tld|등록|\.com|\.net|\.io|\.kr|\.org/i,
   deposit: /입금|충전|잔액|계좌|예치금|송금|돈/i,
   server: /서버|VPS|클라우드|호스팅|인스턴스|linode|vultr/i,
+  troubleshoot: /문제|에러|오류|안[돼되]|느려|트러블|장애|버그|실패|안\s*됨/i,
   weather: /날씨|기온|비|눈|맑|흐림|더워|추워/i,
   search: /검색|찾아|뭐야|뉴스|최신/i,
   reddit: /레딧|reddit|서브레딧|subreddit/i,
@@ -124,7 +132,7 @@ export function selectToolsForMessage(message: string): typeof tools {
   }
 
   // 패턴 매칭 없으면 전체 도구 사용 (폴백)
-  if (selectedCategories.size === 1) {
+  if (selectedCategories.size === 1) {  // utility만 있으면 폴백
     logger.info('패턴 매칭 없음 → 전체 도구 사용');
     return tools;
   }
@@ -244,6 +252,15 @@ export async function executeTool(
         return executeRedditSearch(result.data, env);
       }
 
+      case 'manage_troubleshoot': {
+        const result = ManageTroubleshootArgsSchema.safeParse(args);
+        if (!result.success) {
+          logger.error('Invalid troubleshoot args', new Error(result.error.message), { args });
+          return `❌ Invalid arguments: ${result.error.issues.map(e => e.message).join(', ')}`;
+        }
+        return executeManageTroubleshoot(result.data, env, telegramUserId);
+      }
+
       default:
         return `알 수 없는 도구: ${name}`;
     }