feat: add centralized logger utility

Add logger.ts with consistent emoji prefixes for all log levels:
- info, success, warn, error, debug

This provides a single source of truth for logging and enables
future extensibility for file logging or external services.

src/lib/logger.ts

@@ -0,0 +1,39 @@
+/**
+ * Centralized logging utility with consistent formatting
+ */
+export const logger = {
+    /**
+     * General information message
+     */
+    info: (message: string, ...args: any[]) => {
+        console.log(`ℹ️  ${message}`, ...args);
+    },
+
+    /**
+     * Success message
+     */
+    success: (message: string, ...args: any[]) => {
+        console.log(`✅ ${message}`, ...args);
+    },
+
+    /**
+     * Warning message
+     */
+    warn: (message: string, ...args: any[]) => {
+        console.warn(`⚠️  ${message}`, ...args);
+    },
+
+    /**
+     * Error message
+     */
+    error: (message: string, ...args: any[]) => {
+        console.error(`❌ ${message}`, ...args);
+    },
+
+    /**
+     * Debug message
+     */
+    debug: (message: string, ...args: any[]) => {
+        console.log(`🔍 ${message}`, ...args);
+    },
+};