test(shared): edgeEventMappers + queryKeys + upload 补 194 个单元测试（Lane D #1764 第五批）

[DeliciousBuding]

Summary

延续 #1765–#1767，落地 Lane D 前端测试补债 (#1764) 第五批：给 4 个纯逻辑模块补 194 个单元测试。不改任何产品代码。

为什么选它

• transcript/edgeEventMappers*.ts（424 行）：Edge 事件 → TranscriptBlock 映射，WS 帧字段缺失/回退链的回归风险点。
• stores/queryKeys.ts（188 行）：TanStack Query key 工厂，空串/undefined/null 分支易错。
• composer/upload.ts（217 行）：XHR/fetch 双路径上传 + 真实 SHA-256 + 进度映射，100% 分支覆盖。

覆盖范围

• edgeEventMappersAgents（+40）：subagent/subtask/childAgent/route/contextUsage/agentResult/compactBoundary
• edgeEventMappersRun（+44）：runText/status/failed/cancelled/finished/outputText/outputBatch/agentText/thinking
• queryKeys（+87）：hub/edge 全部 key factory + isQueryKeyPrefix/rootPrefix 边界（空串折叠、undefined/null 槽位、引用同一性）
• upload（+23）：XHR/fetch 双路径、真实 SHA-256、进度 0→10→15–95→100、失败吞噬、ref 保持

Test plan

• vitest run 新文件 — 194/194 通过
• tsc --noEmit 全包 0 错误
• CI 前端测试 job 通过

关联

• 里程碑：简化做减法 · Simplify & Slim Down (Do not dispatch agent tasks with the HTTP request context #100)
• Lane D 测试补债：[P1] 前端测试补债：shared/workbench 核心 store/hook/util 单元测试 #1764（第五批）
• real_tested=true：纯逻辑单测

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📥 Commits

Reviewing files that changed from the base of the PR and between de446df and 50ced56.

📒 Files selected for processing (4)

• app/shared/src/composer/upload.test.ts
• app/shared/src/stores/queryKeys.test.ts
• app/shared/src/transcript/edgeEventMappersAgents.test.ts
• app/shared/src/transcript/edgeEventMappersRun.test.ts

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