refactor: merge flight-wiki + restructure concepts/ into two subdirectories

- flight-wiki fully merged into airport-wiki/concepts/flight-operations/
- concepts/ restructured: tech-infrastructure/ (9 pages) + flight-operations/ (10 pages)
- aodb.md (380 lines) split into aodb-core.md + aodb-vendors.md
- SCHEMA.md updated: Domain covers '智算中心+航班運營' dual domains
- new: airport-systems-landscape.md (flight ops system architecture)
- index.md rewritten with visual directory tree
- log.md updated

airport-wiki/concepts/tech-infrastructure/glossary.md

@@ -0,0 +1,47 @@
+---
+title: 术语表
+created: 2026-04-08
+updated: 2026-04-08
+type: concept
+tags: [glossary]
+sources: []
+---
+
+# 术语表
+
+## 常用缩略语
+
+| 缩写 | 全称 | 中文 |
+|------|------|------|
+| DC | Data Center | 数据中心 |
+| DCiE | Data Center infrastructure Efficiency | 数据中心基础设施效率 |
+| PUE | Power Usage Effectiveness | 电能使用效率 |
+| DCE | Data Center Engineer | 数据中心工程师 |
+| BHS | Baggage Handling System | 行李处理系统 |
+| DCS | Departure Control System | 离港控制系统 |
+| FIDS | Flight Information Display System | 航班信息显示系统 |
+| AIDS | Airport Information Display System | 机场信息显示系统 |
+| CCTV | Closed-Circuit Television | 闭路电视监控系统 |
+| BAS | Building Automation System | 楼宇自控系统 |
+| UPS | Uninterruptible Power Supply | 不间断电源 |
+| PDU | Power Distribution Unit | 配电单元 |
+| ATS | Automatic Transfer Switch | 自动转换开关 |
+| N+1 | N+1 Redundancy | N+1 冗余 |
+| 2N | 2N Redundancy | 2N 冗余 |
+| SLA | Service Level Agreement | 服务水平协议 |
+| MTTF | Mean Time To Failure | 平均故障前时间 |
+| MTTR | Mean Time To Repair | 平均修复时间 |
+| RTO | Recovery Time Objective | 恢复时间目标 |
+| RPO | Recovery Point Objective | 恢复点目标 |
+| DCI | Data Center Interconnect | 数据中心互联 |
+| WAN | Wide Area Network | 广域网 |
+| LAN | Local Area Network | 局域网 |
+| spine-leaf | Spine-Leaf Architecture | 脊叶架构 |
+
+## 关键指标
+
+- **PUE** = 总设施能耗 / IT 设备能耗（理想值 ≈ 1.2-1.5）
+- **DCiE** = IT 设备能耗 / 总设施能耗（理想值 ≈ 60-80%）
+- **可用性** = MTBF / (MTBF + MTTR)
+
+> 相关：[[power-and-cooling]] | [[airport-data-center-overview]]