fix: normalize action button icon spacing and text size

src/components/ai-toolbar.tsx

@@ -157,12 +157,17 @@ export const AIToolbar = ({
 
 				{/* Action buttons — always visible */}
 				<div className="flex items-center gap-2 flex-wrap">
-					<Button size="sm" onClick={onAddEvent} className="h-8 text-xs">
+					<Button size="sm" onClick={onAddEvent} className="text-xs">
-						<CalendarPlus className="h-3.5 w-3.5 mr-1.5" />
+						<CalendarPlus className="h-3.5 w-3.5" />
 						Add Event
 					</Button>
 
-					<IcsFilePicker onFileSelect={onImport} variant="outline" size="sm">
+					<IcsFilePicker
+						onFileSelect={onImport}
+						variant="outline"
+						size="sm"
+						className="text-xs"
+					>
 						<FileUp className="h-3.5 w-3.5" />
 						Import
 					</IcsFilePicker>
@@ -173,18 +178,18 @@ export const AIToolbar = ({
 								variant="outline"
 								size="sm"
 								onClick={onExport}
-								className="h-8 text-xs"
+								className="text-xs"
 							>
-								<Download className="h-3.5 w-3.5 mr-1.5" />
+								<Download className="h-3.5 w-3.5" />
 								Export
 							</Button>
 							<Button
 								variant="ghost"
 								size="sm"
 								onClick={onClearAll}
-								className="h-8 text-xs text-muted-foreground hover:text-destructive"
+								className="text-xs text-muted-foreground hover:text-destructive"
 							>
-								<Trash2 className="h-3.5 w-3.5 mr-1.5" />
+								<Trash2 className="h-3.5 w-3.5" />
 								Clear
 							</Button>
 						</>