release: v0.4.3 — 关闭时序与后台任务加固（close 排空、失败不吞错、compaction 竞态修复）+ 提交先 WAL

src/engine/aria/index.ts

@@ -1094,6 +1094,17 @@ export class AriaEngine implements IStorageEngine {
   async commitTransaction(): Promise<void> {
     if (!this.currentTxnId) throw new DatabaseError('No active transaction', 'TX_NONE');
 
+    // v0.4.3-fix: 先持久化 WAL COMMIT，再合并快照到 LSM —
+    // 崩溃在 WAL 提交后、快照合并前：恢复时 WAL 重放数据，重启一致；
+    // 崩溃在 WAL 提交前：commitTransaction 尚未返回，事务视为未提交（可回滚）
+    await this.wal.append({
+      type: WALRecordType.COMMIT,
+      txnId: this.currentTxnId,
+      tableName: '',
+      key: '',
+    });
+    await this.wal.flush();
+
     if (this.txnSnapshot) {
       for (const [key, value] of this.txnSnapshot) {
         if ((value as unknown as Record<string, unknown>).__txn_deleted) {
@@ -1106,16 +1117,8 @@ export class AriaEngine implements IStorageEngine {
 
     this.mvcc.commitTransaction(this.currentTxnId);
 
-    await this.wal.append({
-      type: WALRecordType.COMMIT,
-      txnId: this.currentTxnId,
-      tableName: '',
-      key: '',
-    });
-
     this.currentTxnId = null;
     this.txnSnapshot = null;
-    await this.wal.flush();
   }
 
   async rollbackTransaction(): Promise<void> {