Agents: Adjust padding and border radius for harness dropdown button

[mrleemurray]

Refine the styling of the harness dropdown button by adjusting its padding and border radius for improved appearance.

[Copilot]

Pull request overview

Refines the visual styling of the AI Customization “harness” dropdown button within the AI customization management editor UI.

Changes:

• Adjusts the harness dropdown button padding.
• Updates the harness dropdown button border radius.
• Tweaks hover styling behavior for the button.

Comments suppressed due to low confidence (1)

src/vs/workbench/contrib/chat/browser/aiCustomization/media/aiCustomizationManagement.css:218

• .harness-dropdown-button uses color: var(--vscode-dropdown-foreground) but no longer sets background in its default state. In many themes --vscode-dropdown-foreground is chosen to contrast specifically with --vscode-dropdown-background, so rendering it on the sidebar background can reduce contrast/legibility. Consider restoring the default background: var(--vscode-dropdown-background) (or switching to a more appropriate foreground token for a transparent background).

.ai-customization-management-editor .harness-dropdown-button {
	display: flex;
	align-items: center;
	gap: 6px;
	width: 100%;
	padding: 3px 6px;
	border: 1px solid var(--vscode-dropdown-border, transparent);
	border-radius: 6px;
	color: var(--vscode-dropdown-foreground);
	cursor: pointer;
	font-size: 12px;
	text-align: left;
}