fix(backend): remove verbose message trimming logs

Removes the console.log spam that was triggered on every incoming chat message
when the store exceeded MAX_REGULAR_MESSAGES. The trimming logic still works
silently in the background.

.gitignore

@@ -27,6 +27,7 @@ node_modules/
 *.njsproj
 *.sln
 *.sw?
+.codellm
 # OS specific
 
 # Task files and project management

backend/src/index.ts

@@ -441,10 +441,6 @@ function trimMessages(store: ChatMessage[]): void {
     // Replace store contents
     store.length = 0;
     store.push(...newStore);
-    
-    const newRegularCount = regularCount - toRemove;
-    const specialCount = specialIndices.length;
-    console.log(`[Backend] Trimmed ${toRemove} regular messages. Now: ${newRegularCount} regular + ${specialCount} special = ${store.length} total`);
   }
 }