fix(frontend): 处理 WorkflowRun 乐观锁与跨资源冲突对账

[xyh202131]

改动内容

• WorkflowRun 更新请求回传当前 version，并把后端业务 409 映射为明确的乐观锁冲突错误
• Quick Start 与 Workflow Editor 统一展示冲突提示、阻止继续修改，并提供整页加载最新版本入口
• 修复自动推进、路由切换、StrictMode 重放及旧 Session 异步回调造成的状态污染
• 角色母版确认与 Character 绑定合并为一次 WorkflowRun 保存，避免第二次保存冲突后流程卡死
• Workflow Editor 的审核发布并入同一个 Session 命令；资产写入失败时按最新 WorkflowRun 状态精确补偿
• 对“后端已保存但响应丢失”和“另一客户端已完成同一目标”进行回读对账，避免误报冲突或误删有效资产

对齐依据

配合后端 PR #345 的 WorkflowRun 乐观锁契约，前端以后端返回的版本号为准。

验证

• npm run lint -- --deny-warnings
• npm run typecheck
• npm run test:coverage：51 个测试文件，561 项通过，4 项跳过
• npm run build
• 本次改动文件通过 oxfmt --check
• 按 Codecov patch 口径本地估算约 88.28%

Closes #205

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[github-actions]

⚠️ @xyh202131，此 PR 尚未关联 issue。请在 PR 描述中使用 Closes #123 等关闭关键字，或通过 Development 侧栏关联对应 issue。

[codecov]

Codecov Report

❌ Patch coverage is 92.97052% with 31 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
frontend/src/pages/quick-start/index.tsx	88.88%	2 Missing and 9 partials ⚠️
...ges/workflow-editor/use-workflow-editor-session.ts	91.59%	0 Missing and 10 partials ⚠️
frontend/src/pages/quick-start/service.ts	93.58%	0 Missing and 5 partials ⚠️
...workflow-editor/character-template-confirmation.ts	92.68%	0 Missing and 3 partials ⚠️
frontend/src/pages/workflow-editor/runtime.ts	95.12%	0 Missing and 2 partials ⚠️

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[minorcell]

⚠️ @xyh202131，此 PR 尚未关联 issue。请在 PR 描述中使用 Closes #123 等关闭关键字，或通过 Development 侧栏关联对应 issue。

@xyh202131 修改下你的 PR Body，这样才会在PR合并时自动关闭 issue。Close #123

[minorcell]

/review

[fennoai]

Reviewed the fixed PR diff across the WorkflowRun API/controller, Quick Start recovery flow, and Workflow Editor session/view orchestration. The optimistic-lock reconciliation paths are generally coherent, but the editor still leaves one asset-upload path active after a conflict.

Verification: targeted frontend tests could not run because the checkout has no usable Vitest installation (vitest: Permission denied, and the package module is absent).