feat: add supervisor workspace and traceable story graph

Extend the existing heartbeat workspace with scoped work reviews, result-specific story graphs, source inspection, and pinned conversation or task feedback. Connect confirmed continuation and local knowledge entity previews through the desktop APIs, and preserve result history and user corrections in schema 43.

Include focused regression tests, an isolated visual fixture, and implementation evidence. Full event-by-event replay, Experiment targets, no-change handling, and cancellation remain incomplete; this commit does not claim complete feature acceptance. Existing automatic plans remain active when the application entry is disabled.

Release note: Review work progress in the Supervisor workspace, trace graph events to saved sources, and open a matching review from pinned conversation or task feedback.

docs/features/conversation-supervision/README.md

@@ -1,6 +1,6 @@
 # 监督者与会话监督
 
-监督者的目标设计统一工作回顾、会话监督与故事线图谱，以智能心跳作为定时唤醒机制。计划将已有智能心跳入口升级为监督者，避免新增重复应用。当前会话监督尚在设计中，图谱仅有模拟原型，统一应用尚未接入产品。
+监督者统一工作回顾、会话监督与故事线图谱，以智能心跳作为定时唤醒机制。现有智能心跳页面承载监督者工作回顾入口，手动回顾、定时结果投影、来源原文、实体/关系确认、继续讨论、知识库预览提交和侧栏反馈已经接入。历史回顾定位到对应结果图谱；侧栏按会话或任务查询，并支持固定目标。同 scope 的跨 run 实体复用依赖 Main 提供的候选 UUID，具体规则和验证边界见[实施进度](./progress.md)。
 
 ## 文档导航
 
@@ -12,6 +12,7 @@
 | [UI 设计](./ui-design.md) | 应用导航、工作回顾、侧栏反馈及页面状态 |
 | [User Stories](./user-stories.md) | 监督者与故事线图谱的用户操作和验收场景 |
 | [技术设计](./technical-design.md) | Main/Renderer 分层、数据模型、IPC、安全边界和实施顺序 |
+| [实施进度](./progress.md) | 已验证实现、验证证据和当前边界 |
 | [故事线图谱设计](../story-graph/prd.md) | 图谱对象、环绕时间轴与实体交互 |
 
-统一应用尚未接入产品，实施状态仍以代码和后续进度文档为准。逻辑待定项见[逻辑设计](./logic-design.md)，实施边界与阶段见[技术设计](./technical-design.md)。现有心跳行为见[智能心跳](../smart-heartbeat/README.md)，原型范围见[Story Graph 演示](../story-graph/README.md)。
+实施状态以代码和[实施进度](./progress.md)为准。逻辑待定项见[逻辑设计](./logic-design.md)，架构边界见[技术设计](./technical-design.md)。现有心跳行为见[智能心跳](../smart-heartbeat/README.md)，原型范围见[Story Graph 演示](../story-graph/README.md)。