Add orange theme styling for count badge on "everything" tag

[Copilot]

The count badge on the "everything" tag was using default gray styling instead of matching the tag's orange theme, breaking visual consistency.

Changes

• Added countClasses computed property to handle count badge styling
• Orange theme (bg-orange-200 text-orange-700/800) applied when isEverything.value is true
• Supports all variants (default, selected, highlighted) with appropriate color adjustments
• Regular tags retain gray styling

const countClasses = computed(() => {
    if (isEverything.value) {
        if (props.variant === 'highlighted' || props.variant === 'selected') {
            return 'bg-orange-200 text-orange-800 dark:bg-orange-800 dark:text-orange-200';
        } else {
            return 'bg-orange-200 text-orange-700 dark:bg-orange-800 dark:text-orange-300';
        }
    }
    // ... gray theme for regular tags
});

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