diff --git a/frontend/eslint.config.mjs b/frontend/eslint.config.mjs
index 7922013cb..4bf19b197 100644
--- a/frontend/eslint.config.mjs
+++ b/frontend/eslint.config.mjs
@@ -20,7 +20,6 @@ export default defineConfig(
       "no-undef": "off", // Temporarily disabled until codebase conformant
       "no-useless-escape": "off", // Temporarily disabled until codebase conformant
       "no-case-declarations": "off", // Temporarily disabled until codebase conformant
-      "prefer-const": "off", // Temporarily disabled until codebase conformant
       "@typescript-eslint/ban-ts-comment": "off", // Temporarily disabled until codebase conformant
       "@typescript-eslint/no-empty-object-type": "off", // Temporarily disabled until codebase conformant
       "@typescript-eslint/no-explicit-any": "off", // Temporarily disabled until codebase conformant
diff --git a/frontend/src/services/enhancedPDFProcessingService.ts b/frontend/src/services/enhancedPDFProcessingService.ts
index f9f067c30..65d0c6519 100644
--- a/frontend/src/services/enhancedPDFProcessingService.ts
+++ b/frontend/src/services/enhancedPDFProcessingService.ts
@@ -182,7 +182,7 @@ export class EnhancedPDFProcessingService {
   ): Promise<ProcessedFile> {
     const arrayBuffer = await file.arrayBuffer();
     const pdf = await pdfWorkerManager.createDocument(arrayBuffer);
-    
+
     try {
       const totalPages = pdf.numPages;
 
@@ -519,10 +519,7 @@ export class EnhancedPDFProcessingService {
     this.notifyListeners();
 
     // Force memory cleanup hint
-    if (typeof window !== 'undefined' && window.gc) {
-      let gc = window.gc;
-      setTimeout(() => gc(), 100);
-    }
+    setTimeout(() => window.gc?.(), 100);
   }
 
   /**
diff --git a/frontend/src/services/indexedDBManager.ts b/frontend/src/services/indexedDBManager.ts
index 2048c021f..9251998a3 100644
--- a/frontend/src/services/indexedDBManager.ts
+++ b/frontend/src/services/indexedDBManager.ts
@@ -73,7 +73,7 @@ class IndexedDBManager {
       request.onsuccess = () => {
         const db = request.result;
         console.log(`Successfully opened ${config.name}`);
-        
+
         // Set up close handler to clean up our references
         db.onclose = () => {
           console.log(`Database ${config.name} closed`);
@@ -87,13 +87,11 @@ class IndexedDBManager {
       request.onupgradeneeded = (event) => {
         const db = request.result;
         const oldVersion = event.oldVersion;
-        
+
         console.log(`Upgrading ${config.name} from v${oldVersion} to v${config.version}`);
 
         // Create or update object stores
         config.stores.forEach(storeConfig => {
-          let store: IDBObjectStore;
-
           if (db.objectStoreNames.contains(storeConfig.name)) {
             // Store exists - for now, just continue (could add migration logic here)
             console.log(`Object store '${storeConfig.name}' already exists`);
@@ -109,7 +107,7 @@ class IndexedDBManager {
             options.autoIncrement = storeConfig.autoIncrement;
           }
 
-          store = db.createObjectStore(storeConfig.name, options);
+          const store = db.createObjectStore(storeConfig.name, options);
           console.log(`Created object store '${storeConfig.name}'`);
 
           // Create indexes
@@ -168,7 +166,7 @@ class IndexedDBManager {
 
     return new Promise((resolve, reject) => {
       const deleteRequest = indexedDB.deleteDatabase(name);
-      
+
       deleteRequest.onerror = () => reject(deleteRequest.error);
       deleteRequest.onsuccess = () => {
         console.log(`Deleted database: ${name}`);
@@ -224,4 +222,4 @@ export const DATABASE_CONFIGS = {
   } as DatabaseConfig
 } as const;
 
-export const indexedDBManager = IndexedDBManager.getInstance();
\ No newline at end of file
+export const indexedDBManager = IndexedDBManager.getInstance();