fix: reduce supervisor stalls and preserve task delivery

Load Supervisor graphs only when opened, preserve source details on demand, reuse indexed story digests and window selection lists without losing keyboard or focus behavior. Route heavy UI reads through the existing worker, batch scoped queries and construct each publication snapshot once.

Keep remote cancellation responsive during model-route cleanup, remove late routes and retain reported usage after response-cap cancellation. Preserve Telegram pending replies through polling conflicts, show delivery errors and honor the final rate-limit cooldown.

Schema 62 adds lookup indexes without rewriting user content; older clients cannot open upgraded data. Large review publication still blocks Main and remains documented follow-up work. Record the future storage-service direction without performing the architecture migration.

Validation: exact staged code passed isolated full tests (6212 passed, 87 skipped), typecheck and lint. Three-round source performance comparisons, SQLite migration equivalence, native Electron interaction checks and current-source Linux x64 Host validation completed; eight external text-model requests.

Release note: Supervisor opens reviews without loading the entire graph, keeps long selection lists responsive and preserves details and keyboard navigation. Remote cancellation and Telegram reply recovery are more reliable; remote fixes require an Agent build containing this change.

docs/architecture/performance-principles.md

@@ -141,3 +141,5 @@ Main 负责窗口、生命周期、权限和消息转发。数据库查询、文
 | P9 | 性能阈值还没有接入 CI，也没有真实低端机的基线 |
 
 2026-10-04 补充：监督回顾的来源初始化和继续前版本校验已移入现有 Worker 入口的独立连接，扫描不持有写锁，清单按 200 条提交，生产失败不回退 Main 同步扫描。最终发布事务仍在 Main；实现与实测边界见[监督者进度](../features/conversation-supervision/progress.md#2026-10-04-回顾初始化阻塞修复)。
+
+2026-10-05 补充：监督者 UI 的概览、图谱、故事读取也已迁到现有只读 Worker；概览按需加载、列表窗口化及摘要缓存见[KISS 局部修复](../review/kiss-local-fixes-2026-10-05.md)。这与工具侧 Story Graph 读取是不同入口。Main 最终发布及部分大响应仍有超预算样本，不能把局部完成视为全项达标。存储服务目标另见[桌面存储方向](./desktop-storage-direction.md)，本轮不实施全面迁移。