Add test coverage for 5 components: HpAdjustPopover, ConditionPicker, CombatantRow, ActionBar, SourceManager

Adds aria-label attributes to HP placeholder and source delete buttons
for both accessibility and testability.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web/src/components/source-manager.tsx

@@ -88,6 +88,7 @@ export function SourceManager({
 							type="button"
 							onClick={() => handleClearSource(source.sourceCode)}
 							className="rounded-md p-1 text-muted-foreground transition-colors hover:bg-hover-destructive-bg hover:text-hover-destructive"
+							aria-label={`Remove ${source.displayName}`}
 						>
 							<Trash2 className="h-3.5 w-3.5" />
 						</button>