agent indicator tweaks

[joshspicer]

refs #290647, https://github.com/microsoft/vscode-internalbacklog/issues/6561

fixes #290742

1. Fix cursor hit area extending beyond control bounds (69066ff)

   • Removed padding-right: 22px from .agent-status-container that caused the pointer cursor and click behavior to extend ~30px beyond the visible badge

2. Add "input required" indicator (bb25992)

   • When any session needs user input, the "in progress" badge section transforms to show a report icon (⚠️) with the needs-input count
     Icon uses warning color (--vscode-notificationsWarningIcon-foreground) for visibility
     Tooltip changes to "{n} session(s) need input"

3. Fix uneven padding in unread sessions button (b0f9b00)

   • Adjusted left padding on unread section from 8px to 6px to visually balance the small dot icon

4. Fix inconsistent border radius (58dc0f1)

   • Added :only-child rule for fully rounded corners when sparkle is the only visible section
     Added overflow: hidden to clip hover backgrounds to border-radius
     Fixed dropdown twistie to have flat right edge when adjacent sections exist

[Copilot]

Pull request overview

This PR makes a CSS adjustment to fix padding issues in the agent title bar status widget, addressing part of the UX polish requirements mentioned in issue #290742.

Changes:

• Removes padding-right: 22px from .agent-status-container CSS rule to address uneven padding in the agent sessions title control

[vs-code-engineering]

📬 CODENOTIFY

The following users are being notified based on files changed in this PR:

@bpasero

Matched files:

• src/vs/workbench/contrib/chat/browser/agentSessions/experiments/agentTitleBarStatusWidget.ts
• src/vs/workbench/contrib/chat/browser/agentSessions/experiments/media/agenttitlebarstatuswidget.css