feat: 2026-07-11 全量更新 - 代办集成+会议室预定+知识迭代修复+UI统一+Bug修复

== 已部署上线 (9项) ==
- 代办事项真实数据源集成 (企微审批API 8bug修复链)
- H5/坐席端 Logo样式统一+绿色背景
- 视频引导页修复 (localStorage key v2)
- 坐席端 v9 Vue版本修复 (ElMessage._context)
- 截图按钮 v10 修复 (getDisplayMedia user gesture)
- 扫码样式恢复+H5扫码登录跳转修复
- H5截图快捷键提示

== 代码完成待部署 (3项) ==
- 知识迭代3Bug修复 (#8 POST端点/#7 MERGE幂等/#6 过期检查)
- 会议室预定-小鱼易联终端 (40文件, 40/40测试通过)
- IT资产升级审批推送 (asset_service.py)

== 需求文档 (2项) ==
- 坐席端AI辅助消息框-PRD (4项新功能确认)
- 坐席端布局优化建议 v2.0 (7天计划)

== 新增文档 ==
- 日报-2026-07-11.md
- 知识迭代Bug修复报告-20260711.md
- 会议室预定-部署指南.md
- CHANGELOG.md 更新

== 测试 ==
- test_todo_integration.py: 40/40
- test_meetingroom.py: 40/40
- test_bugfix_ki_suggestions.py: 21/21

backend/app/api/knowledge_iteration.py

@@ -4,6 +4,7 @@
 # 说明：知识库自动迭代相关接口（扩展版）。
 #   1. POST /api/admin/knowledge-iteration/analyze - 触发分析并生成建议
 #   2. GET /api/admin/knowledge-iteration/suggestions - 获取建议列表（支持 audience/confidence 筛选）
+#   2.1 POST /api/admin/knowledge-iteration/suggestions - 创建知识建议（手动录入，通道 B）
 #   3. GET /api/admin/knowledge-iteration/suggestions/{id} - 获取建议详情
 #   4. POST /api/admin/knowledge-iteration/suggestions/{id}/approve - 审核通过（触发Neo4j写图）
 #   5. POST /api/admin/knowledge-iteration/suggestions/{id}/reject - 审核拒绝
@@ -22,6 +23,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from app.database import get_db
 from app.dependencies import get_current_user, require_admin, UserInfo
 from app.models.knowledge_suggestion import KnowledgeSuggestion
+from app.schemas.enums import SuggestionStatusEnum, GraphSyncStatusEnum
 from app.schemas.knowledge_suggestion import (
     KnowledgeSuggestionListResponse,
     KnowledgeSuggestionResponse,
@@ -30,6 +32,7 @@ from app.schemas.knowledge_suggestion import (
     KnowledgeSuggestionReject,
     KnowledgeSuggestionRewrite,
     KnowledgeSuggestionMerge,
+    KnowledgeSuggestionCreate,
 )
 from app.services.knowledge_iteration_service import (
     KnowledgeIterationService,
@@ -158,6 +161,74 @@ async def list_suggestions(
     }
 
 
+# -----------------------------------------------------------------------------
+# 创建知识建议（手动录入 — 通道 B）
+# -----------------------------------------------------------------------------
+# POST /api/admin/knowledge-iteration/suggestions
+@router.post("/suggestions")
+@require_admin
+async def create_suggestion(
+    body: KnowledgeSuggestionCreate,
+    current_user: UserInfo = Depends(get_current_user),
+    db: AsyncSession = Depends(get_db),
+):
+    """创建知识库优化建议（手动录入，通道 B）。
+
+    训练师/管理员手动创建知识建议，状态初始为 pending，等待审核。
+
+    - **suggestion_type**: 建议类型（new_faq/update/outdated）
+    - **title**: 建议标题（必填）
+    - **content**: 答案内容（必填）
+    - **source_type**: 来源类型（手动录入为 manual）
+
+    **需要管理员权限。**
+    """
+    # 字段验证：必填字段不能为空
+    if not body.title or not body.title.strip():
+        return {"code": 400, "message": "标题不能为空", "data": None}
+    if not body.content or not body.content.strip():
+        return {"code": 400, "message": "内容不能为空", "data": None}
+    if not body.source_type or not body.source_type.strip():
+        return {"code": 400, "message": "来源类型不能为空", "data": None}
+
+    logger.info(
+        f"管理员 {current_user.name} 手动创建知识建议: "
+        f"type={body.suggestion_type}, title={body.title}"
+    )
+
+    # 构建 KnowledgeSuggestion 对象，status 初始为 pending
+    suggestion = KnowledgeSuggestion(
+        suggestion_type=body.suggestion_type,
+        status=SuggestionStatusEnum.pending.value,
+        title=body.title.strip(),
+        content=body.content.strip(),
+        category=body.category or "其他",
+        tags=body.tags or [],
+        source_type=body.source_type,
+        source_data=body.source_data,
+        reason=body.reason,
+        confidence=body.confidence,
+        audience=body.audience.value if body.audience else None,
+        issue=body.issue,
+        action=body.action,
+        relation_type=body.relation_type.value if body.relation_type else None,
+        parent_issue=body.parent_issue,
+        graph_meta=body.graph_meta,
+        graph_sync_status=GraphSyncStatusEnum.pending.value,
+        source_failed=False,
+    )
+
+    db.add(suggestion)
+    await db.commit()
+    await db.refresh(suggestion)
+
+    return {
+        "code": 0,
+        "message": "知识建议创建成功，等待审核",
+        "data": KnowledgeSuggestionResponse.model_validate(suggestion),
+    }
+
+
 # -----------------------------------------------------------------------------
 # 获取建议详情
 # -----------------------------------------------------------------------------