The workbar tabs, close controls, and add button now use the shared rounded control styling again. The terminal panel and its toolbar remain square as requested.
Release note: 恢复工作栏页签、关闭按钮和加号入口的圆角外观；终端面板与终端工具栏继续保持直角。
Terminal paste previously relied on the Renderer browser Clipboard API, which could be denied by Electron and leave the toolbar action unusable. Text clipboard access now goes through the trusted Main/Preload bridge, and the workbar tabs plus terminal toolbar use straight corners for a continuous docked appearance.
Release note: 修复终端工具栏粘贴可能因剪贴板权限被拒绝而失败的问题，并将工作栏页签与终端工具栏调整为直角样式。
Define repository and feature-scoped documentation rules for PRDs, User Stories, logic, UI, technical design, and progress evidence.
Move feature-owned documents under docs/features, add one entry point per feature, remove the redundant docs index, and update all affected cross-references. Expand the local tool environment design with explicit product, story, logic, UI, technical, and progress documents.
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