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/features/assistant-workbar/runtime-process-reuse-technical-design.md

@@ -297,6 +297,12 @@ Agent 当前 Runtime installation + 兼容配置
 发送 Prompt；原生调用迟到返回的 Session 只关闭自身，不能回收仍服务其他 binding
 的共享进程。原生握手本身仍由进程 owner 共享，一个等待者退出不取消其他等待者。
 
+模型路由撤销不等待原生 HTTP 响应后才释放 backend 控制队列；broker 关闭、凭据释放
+及 terminal 提交仍按原顺序执行。启动准备保存原 transport 和取消 signal，安装完成时
+若已取消，按原 Session／operation 再撤销一次，避免早先清理被迟到安装覆盖。撤销沿用
+helper 的 operation 匹配检查，不删除同 Session 的其他 operation。HTTP 沿用 10 秒
+超时，进程退出或 transport dispose 中止未完成请求；无需新的持久状态或协议阶段。
+
 原生 `chat.message` 在模型请求前设置该 Session 的工具与模型路由，不再按产品模式
 过滤 Shell、编辑或写入；请求级端点与子会话归属仍独立。
 OpenCode 1.18.29 的 ACP 不转发未注册子 Session 的权限请求，且原生子代理只继承父