feat(agents,api): 一致性冲突一键采纳补丁对 original/replacement + SSE/契约透传

- Conflict schema 增 original/replacement（可缺）：可局部修复时审稿提议精确补丁
- 续审 prompt 指示填逐字 original + 改后 replacement，不可定位则留空
- orchestrator SSE conflict 事件 + apps/api ReviewConflictView 透传两字段
- 重生成 TS 客户端 schema.d.ts；memory/contracts.md 记录契约变更（向后兼容）

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/api/ww_api/schemas/projects.py

@@ -107,6 +107,9 @@ class ReviewConflictView(BaseModel):
     where: str = ""
     refs: list[str] = Field(default_factory=list)
     suggestion: str = ""
+    # 一键采纳补丁对（可缺）：留痕里带则前端「采纳改法」可把 original→replacement 改入终稿。
+    original: str | None = None
+    replacement: str | None = None
 
 
 class ReviewHistoryItem(BaseModel):