feat: Add translation support

src/lib/i18n/i18n.ts

@@ -0,0 +1,55 @@
+import messages from './messages.json';
+
+// Simple i18n utility for English-only text management
+// Get message by key with optional interpolation
+export function t(key: string, params?: Record<string, string | number>): string {
+	// Navigate through nested keys (e.g., 'common.cancel')
+	const keys = key.split('.');
+	let value: unknown = messages;
+
+	for (const k of keys) {
+		if (value && typeof value === 'object' && k in value) {
+			value = (value as Record<string, unknown>)[k];
+		} else {
+			console.warn(`Translation key not found: ${key}`);
+			return key;
+		}
+	}
+
+	if (typeof value !== 'string') {
+		console.warn(`Translation value is not a string: ${key}`);
+		return key;
+	}
+
+	// Interpolate parameters
+	if (params) {
+		return value.replace(/\{(\w+)\}/g, (match, paramKey) => {
+			return params[paramKey]?.toString() || match;
+		});
+	}
+
+	return value;
+}
+
+// Format plural forms (basic implementation)
+export function tp(key: string, count: number, params?: Record<string, string | number>): string {
+	const baseKey = key;
+	const pluralKey = `${key}_plural`;
+
+	// Try to get plural form first
+	let message = t(pluralKey, { ...params, count });
+
+	// If plural form doesn't exist, use singular
+	if (message === pluralKey) {
+		message = t(baseKey, { ...params, count });
+	}
+
+	// Replace {plural} with 's' if count > 1
+	if (count !== 1) {
+		message = message.replace('{plural}', 's');
+	} else {
+		message = message.replace('{plural}', '');
+	}
+
+	return message;
+}