Test Agents window and VS Code window interop

[sandy081]

• Mac Anthony Kim (@anthonykim1)
• Win Don Jayamanne (@DonJayamanne)
• Linux Hawk Ticehurst (@hawkticehurst)

Complexity: 3

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Test the window interoperability features between the VS Code window and the Agents window.

Two distinct features are covered:

1. Folder-aware buttons — open the current folder in the other window:

   • Open in Agents button (VS Code title bar): opens the workspace folder in the Agents window
   • Open in Editor button (Agents window title bar): opens the active session's workspace folder in VS Code

2. Window-switching commands — switch focus between windows without folder context:

   • Open Agents Window command (from VS Code window)
   • Open VS Code Window command (from Agents window)

Scenario 1: Open in Agents button in VS Code title bar

1. Open VS Code with a folder/workspace
2. Verify the 'Open in Agents' button appears in the title bar (icon + label widget)
3. Hover over it — tooltip should read 'Open in Agents Window'
4. Click it — Agents window should open with that folder selected
5. Run the 'Open in Agents' command from the Command Palette — same behavior
6. Open VS Code with no folder — verify the button still appears but opens the Agents window without a folder

Scenario 2: Open in Editor button in Agents window title bar

1. Open the Agents window — if the welcome view is shown, complete the welcome flow and set up a workspace
2. After the welcome view is done, verify the workspace is correctly set and the 'Open in Editor' button appears in the title bar
3. Click 'Open in Editor' — VS Code should open (or focus) with that workspace folder
4. Navigate to the new session view — verify the button is hidden

Scenario 3: Open Agents Window command and keybinding from VS Code

1. Open VS Code (no Agents window open)
2. Press Cmd+Shift+A (macOS) / Ctrl+Shift+A (Win/Linux) — Agents window should open
3. With Agents window already open, press the keybinding again — Agents window should be focused
4. Run 'Open Agents Window' from the Command Palette — same behavior

Scenario 4: Open VS Code Window command and keybinding from Agents window

1. Open the Agents window with a VS Code window already open
2. Press Cmd+Shift+A (macOS) / Ctrl+Shift+A (Win/Linux) from inside the Agents window — VS Code window should be focused
3. Close all VS Code windows, then press the keybinding from the Agents window — a new VS Code window should open
4. Run 'Open VS Code Window' from the Agents window Command Palette — same behavior

[hawkticehurst]

Sandeep Somavarapu (@sandy081) just to confirm the current palette command inside VSC actually reads as "Open Agents Window" (versus "Open in Agents Window"). I think both work fine (so not opening an issue), but in case you had a strong opinion I thought I'd call it out

[hawkticehurst]

Navigate to the new session view — verify the button is hidden

The open in editor button is not hidden in new chat view, but I consider this desirable behavior. I find it really convenient to be able to select a folder from the new chat workspace picker and then be able to open an instance of vs code with that selected workspace without needing to kick off a chat