refactor: replace console.* with logger in core lib files

Update loaders, handlers, and BotClient to use centralized logger:
- CommandLoader.ts and EventLoader.ts
- AutocompleteHandler.ts, CommandHandler.ts, ComponentInteractionHandler.ts
- BotClient.ts

Provides consistent formatting across all core library logging.

src/lib/loaders/CommandLoader.ts

@@ -4,6 +4,7 @@ import type { Command } from "@lib/types";
 import { config } from "@lib/config";
 import type { LoadResult, LoadError } from "./types";
 import type { Client } from "../BotClient";
+import { logger } from "@lib/logger";
 
 /**
  * Handles loading commands from the file system
@@ -44,7 +45,7 @@ export class CommandLoader {
                 await this.loadCommandFile(filePath, reload, result);
             }
         } catch (error) {
-            console.error(`Error reading directory ${dir}:`, error);
+            logger.error(`Error reading directory ${dir}:`, error);
             result.errors.push({ file: dir, error });
         }
     }
@@ -59,7 +60,7 @@ export class CommandLoader {
             const commands = Object.values(commandModule);
 
             if (commands.length === 0) {
-                console.warn(`⚠️  No commands found in ${filePath}`);
+                logger.warn(`No commands found in ${filePath}`);
                 result.skipped++;
                 return;
             }
@@ -73,21 +74,21 @@ export class CommandLoader {
                     const isEnabled = config.commands[command.data.name] !== false;
 
                     if (!isEnabled) {
-                        console.log(`🚫 Skipping disabled command: ${command.data.name}`);
+                        logger.info(`🚫 Skipping disabled command: ${command.data.name}`);
                         result.skipped++;
                         continue;
                     }
 
                     this.client.commands.set(command.data.name, command);
-                    console.log(`✅ Loaded command: ${command.data.name}`);
+                    logger.success(`Loaded command: ${command.data.name}`);
                     result.loaded++;
                 } else {
-                    console.warn(`⚠️  Skipping invalid command in ${filePath}`);
+                    logger.warn(`Skipping invalid command in ${filePath}`);
                     result.skipped++;
                 }
             }
         } catch (error) {
-            console.error(`❌ Failed to load command from ${filePath}:`, error);
+            logger.error(`Failed to load command from ${filePath}:`, error);
             result.errors.push({ file: filePath, error });
         }
     }