feat: unify execution and add workspace file imports

Remove Ask/Execute modes and general product tool approvals so requests use the selected runtime, enabled capabilities, and execution account permissions. Migrate retired application metadata while preserving user content.

Retire the Results page while retaining conversation images and stored artifacts. Add local and remote workspace file imports, timestamps and sorting, improve image discovery and saving, and refine workspace navigation and supervision responsiveness. Include the accompanying web-search changes, tests, probes, and product documentation.

Remote imports require an updated Agent. Existing artifacts are not automatically copied into project directories. Validation evidence and outstanding failures remain documented in feature progress files; no full test suite or real-model calls were rerun for this commit.

Release note: Run requests without switching work modes, import files into a selected local or remote workspace folder, sort workspace files by date, and keep using conversation images after removal of the Results page.

docs/features/local-tool-environment/prd.md

@@ -27,7 +27,7 @@ Python、虚拟环境或 Conda 环境时，也不能被 GoodBuddy 静默替换
 3. 专业用户可以选择检测到的解释器或指定其他可执行文件。
 4. 设置始终展示实际来源、版本、路径、工具状态和能力依赖状态。
 5. 工具执行环境不修改系统环境，也不传播到远程主机。
-6. 保持 Ask/Execute、Runtime、MCP、取消和进程清理的现有边界。
+6. 保持 Runtime、MCP 能力范围、取消和进程清理的现有边界。
 7. 用户可以在“工具执行环境”Tab 中明确选择受管工具工件使用原生地址还是 OSS 镜像。
 8. Skills、MCP 和工具执行环境通过一个“能力与工具”设置入口形成清晰的能力配置链路。
 
@@ -159,8 +159,8 @@ Python、虚拟环境或 Conda 环境时，也不能被 GoodBuddy 静默替换
 
 ### FR-10 权限模式
 
-- Ask 不因解释器可用而获得额外命令或写入权限。
-- Execute 继续使用当前本机账号的完整授权。
+- 解释器可用不改变工具的注册、分配与资源范围。
+- 工具使用当前本机账号权限，无产品工作模式。
 - 不为工具环境增加第二套批准流程。
 
 ### FR-11 工具下载源