release: v0.3.2 — 质量加固 + SQL扩展 + 表达式 + 并发同步

v0.2.6 质量加固:
- 修复 AriaEngine 二级索引 SSTable 互相覆盖(命名空间隔离)
- 修复 LSM 多版本读取顺序错误 + MergeIterator 取最新来源
- 重写 LZ4 压缩器(往返一致性 + 缓冲区溢出)
- sstableCache LRU 上限 + 预加载兜底(BufferPool 配置生效)
- 修复 React/Vue 集成 import type 运行时 bug + exports 子路径
- 新增 38 个测试(LZ4往返/Crypto/集成), 删除伪测试

v0.3.0 SQL 功能扩展:
- 多语句 parseAll + 事务语句 BEGIN/COMMIT/ROLLBACK
- INSERT INTO ... SELECT + UNION/UNION ALL + EXISTS 关联子查询
- CREATE/DROP INDEX 五引擎实现 + 别名 WHERE 修复
- benchmark 页面 + 36 个新测试

v0.3.1 表达式与性能:
- CASE WHEN 表达式(SELECT 列/WHERE/聚合)
- JOIN + 关联子查询逐行绑定
- WAL 批量组提交(写放大 O(N)→O(1))
- 修复 pending frozen 可见性 + flush 缓存竞争

v0.3.2 并发:
- CASE WHEN 用于 WHERE/聚合 + JOIN 哈希连接
- 多标签页同步(multiTabSync + BroadcastChannel)
- IndexedDB schema 持久化(reopen 后表结构恢复)
- 修复 where-matcher 顶层 $not
- 修复 CJS 产物 .js 被 ESM 解析(exports 空) — .cjs 后缀 + exports 修正
- 836 测试 / 44 套件 / 81.0% 覆盖率

CONTRIBUTING.md

@@ -43,11 +43,20 @@ src/
 ├── core.ts               # MetonaSqlark main class
 ├── constants.ts          # Types, defaults, enums, errors
 ├── utils.ts              # Utility functions
+├── connection-manager.ts # Connection pool (connect/disconnect)
 ├── engine/               # Storage engines
 │   ├── interface.ts      # IStorageEngine interface
 │   ├── memory.ts         # MemoryEngine (Map-based)
 │   ├── indexeddb.ts      # IndexedDBEngine (browser persistence)
-│   └── opfs.ts           # OPFSEngine (Origin Private File System)
+│   ├── opfs.ts           # OPFSEngine (Origin Private File System)
+│   └── aria/             # AriaEngine (LSM-Tree page storage engine)
+│       ├── index/        # LSM / MemTable / SSTable / Bloom / MergeIterator
+│       ├── page/         # 4KB slotted page format
+│       ├── buffer/       # Buffer Pool (LRU eviction)
+│       ├── wal/          # Write-Ahead Log + Checkpoint
+│       ├── transaction/  # MVCC manager
+│       ├── store/        # Backends (IndexedDB / OPFS / Memory)
+│       └── compression/  # LZ4
 ├── hybrid/               # HybridEngine (write-through)
 ├── table/                # Table management & Schema validation
 ├── query/                # Query system
@@ -64,7 +73,7 @@ src/
 ├── plugin/               # Plugin system (14 lifecycle hooks)
 └── integrations/         # React & Vue hooks
 
-tests/                    # Test suite (701+ test cases, 32 test suites)
+tests/                    # Test suite (761+ test cases, 41 test suites)
 site/                     # Documentation site (index / docs / demo)
 ```
 
@@ -133,9 +142,9 @@ npm run build
 
 # Output in dist/
 # ├── metona-sqlark.js        UMD
-# ├── metona-sqlark.min.js    UMD minified (~42KB / ~10KB gzip)
+# ├── metona-sqlark.min.js    UMD minified (~105KB / ~27KB gzip)
 # ├── metona-sqlark.esm.js    ES Module
-# ├── metona-sqlark.cjs.js    CommonJS
+# ├── metona-sqlark.cjs    CommonJS
 # └── metona-sqlark.d.ts      TypeScript declarations
 ```