fix: complete runtime and workspace workflows

Restore Ask workspace reads and output paging without granting write access,
and let programming Subagents reuse their parent's browser page. Allocate
browser resources only when used, keep Agent pages aligned with workbar tabs,
recover released bindings, and remove unused automatic screenshot work.

Preserve inherited Runtime selections during remote usage persistence and
manual compression. Keep viable channel model fallbacks, display the actual
scheduled-task mode and Harness model source, and avoid rediscovery delays
when calling healthy MCP tools. Fix directory/history refresh, case-only
renames, rename-aware commit diffs, and FastGPT probe success reporting.

Add regression coverage and align feature documentation. The Agent-side
connection timeout fix requires deploying an updated Agent; existing Ask
read-only and Execute authorization boundaries remain unchanged.

Final validation: 3839 tests passed, 66 skipped; typecheck, lint, development
build, and diff checks passed. Isolated Electron UI/MCP workflows passed with
a loopback model fixture. Current-source Linux x64 Host checks passed with
three successful real model requests. Chromium loadURL rejection was not
reproduced in the UI; released-binding recovery has automated coverage.

Release note: 修复 Ask 读取项目文件、浏览器页面显示与恢复、文件管理及模型配置跟随中的不一致，并减少无用截图和 MCP 等待。定时任务显示实际工作模式，远程会话可正常保存继承 Runtime 的用量；远端连接超时修复需更新 Agent 后生效。

UI-DESIGN.md

@@ -669,8 +669,9 @@ GoodBuddy 是可调整窗口大小的桌面应用。响应式设计优先保证
   成果查看器，不撑高列表，也不显示 Job/Run 树。
 - “新建定制任务”使用共享 Modal，明确选择当前或新 Conversation。聊天入口默认当前
   Conversation，Task Center 入口默认新 Conversation；选择必须持续可见。
-- 创建 Modal 默认 Execute，并允许主动切换 Ask。Execute 持续显示实际 Runtime、Project、
-  工作目录、工具和审批摘要；不支持工具时不得静默降级。
+- 定时消息创建 Modal 使用关联 Conversation 的 Runtime 与 Ask/Execute 模式，不再提供独立
+  模式开关。未运行计划的详情显示会话当前模式，已运行任务显示该次执行记录的模式；
+  不得用旧计划字段表示下一次执行权限。不支持工具时不得静默降级。
 
 ### 13.6 运行记录