feat: IMAP mail sync with thread-to-contact matching (PRD §6.1)

Real IMAP connection via imapflow library:
- Connects to IMAP server (IMAPFlow, TLS on port 993)
- Fetches recent messages (configurable limit, default 20)
- Extracts: from, fromEmail, subject, date, snippet (200 chars)
- Thread-to-contact matching (PRD §6.1):
  1. Match sender email against persons table
  2. If no person match, extract domain and match against company.website
  3. Returns matchedCompany + matchedPerson for each email
- Audit-logged (action: crm.mailsync:imap)
- Zod validated (host, port, user, password, folder, limit)
- 502 on IMAP connection failure with detail
- 400 on validation failure

Tested: invalid creds → 502 'IMAP connection failed', missing host → 400

skills/resume-builder/references/keywords/finance.txt

@@ -0,0 +1,50 @@
+DCF
+LBO
+Comps
+M&A
+IPO
+Pitchbook
+Bloomberg
+Capital IQ
+Wind
+Choice
+财务建模
+估值
+敏感性分析
+行业研究
+deal
+路演
+招股书
+投资逻辑
+catalyst
+催化剂
+风险点
+ROE
+ROIC
+EBITDA
+PE
+PB
+EV
+sizing
+case interview
+hypothesis
+MECE
+issue tree
+PowerPoint
+Excel 高阶
+VBA
+SQL
+Python
+CFA
+CPA
+FRM
+ACCA
+PMP
+量化
+策略
+回测
+因子
+基本面
+技术面
+夏普
+最大回撤

skills/resume-builder/references/keywords/general.txt

@@ -0,0 +1,25 @@
+SQL
+Excel
+PowerPoint
+Word
+Notion
+飞书
+Jira
+Asana
+英语
+项目管理
+跨部门协作
+推动落地
+ownership
+数据驱动
+用户同理心
+快速学习
+影响力
+说服力
+量化
+可迁移
+0-1
+1-N
+ROI
+KPI
+OKR

skills/resume-builder/references/keywords/internet.txt

@@ -0,0 +1,45 @@
+产品规划
+产品迭代
+PRD
+需求评审
+用户访谈
+用户画像
+用户增长
+留存
+转化率
+A/B 测试
+漏斗分析
+数据驱动
+跨部门协作
+推动落地
+0-1
+1-N
+商业化
+PMF
+增长黑客
+AARRR
+私域
+GMV
+ROI
+CAC
+LTV
+SOP
+SaaS
+B 端
+C 端
+内容运营
+社群运营
+活动运营
+PMP
+Scrum
+看板
+Sprint
+Jira
+Confluence
+Notion
+飞书
+SQL
+Tableau
+Figma
+Axure
+墨刀

skills/resume-builder/references/keywords/tech.txt

@@ -0,0 +1,69 @@
+Java
+Go
+Python
+TypeScript
+Spring Boot
+Spring Cloud
+gRPC
+微服务
+Kafka
+RabbitMQ
+Redis
+ZooKeeper
+MySQL
+PostgreSQL
+MongoDB
+ClickHouse
+HBase
+TiDB
+Docker
+Kubernetes
+Helm
+AWS
+GCP
+阿里云
+高并发
+高可用
+分布式
+一致性
+限流
+降级
+熔断
+分库分表
+读写分离
+React
+Vue
+Next.js
+Vite
+Webpack
+PyTorch
+TensorFlow
+sklearn
+XGBoost
+LightGBM
+特征工程
+RAG
+向量检索
+Embedding
+LLM
+SFT
+RLHF
+Agent
+MCP
+vLLM
+量化
+SQL
+Spark
+Flink
+Hive
+Presto
+Airflow
+A/B 测试
+模型评估
+Prometheus
+Grafana
+ELK
+CI/CD
+Jenkins
+GitLab CI
+Terraform