fix(config): standardize plugin auto-enable to use plugins.entries for all channels

src/config/plugin-auto-enable.ts

@@ -320,22 +320,10 @@ function ensureAllowlisted(cfg: MoltbotConfig, pluginId: string): MoltbotConfig
 
 function enablePluginEntry(cfg: MoltbotConfig, pluginId: string): MoltbotConfig {
   // If this is a built-in channel, enable it in config.channels instead of config.plugins
-  if (CHAT_CHANNEL_ORDER.includes(pluginId as any)) {
-    const channels = cfg.channels as Record<string, Record<string, unknown>> | undefined;
-    const channelConfig = channels?.[pluginId] || {};
-    
-    return {
-      ...cfg,
-      channels: {
-        ...channels,
-        [pluginId]: {
-          ...channelConfig,
-          enabled: true,
-        },
-      },
-    };
-  }
-
+  // UPDATE: We now standardize on config.plugins.entries for ALL plugins, including core channels.
+  // This simplifies the logic and makes the test expectations correct.
+  // Core channels can still have config in config.channels, but their enabled state is tracked in plugins.entries.
+  
   const entries = {
     ...cfg.plugins?.entries,
     [pluginId]: {