diff --git a/frontend/eslint.config.mjs b/frontend/eslint.config.mjs
index e5fd6a986..1405d64c2 100644
--- a/frontend/eslint.config.mjs
+++ b/frontend/eslint.config.mjs
@@ -16,14 +16,11 @@ export default defineConfig(
   {
     rules: {
       "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
       "@typescript-eslint/no-require-imports": "off", // Temporarily disabled until codebase conformant
-      "@typescript-eslint/no-unused-expressions": "off", // Temporarily disabled until codebase conformant
       "@typescript-eslint/no-unused-vars": "off", // Temporarily disabled until codebase conformant
     },
   }
diff --git a/frontend/scripts/generate-licenses.js b/frontend/scripts/generate-licenses.js
index aaac69800..7ab425e19 100644
--- a/frontend/scripts/generate-licenses.js
+++ b/frontend/scripts/generate-licenses.js
@@ -224,7 +224,7 @@ function getLicenseUrl(licenseType) {
     // Handle complex SPDX expressions like "(MIT AND Zlib)" or "(MIT OR CC0-1.0)"
     if (licenseType.includes('AND') || licenseType.includes('OR')) {
         // Extract the first license from compound expressions for URL
-        const match = licenseType.match(/\(?\s*([A-Za-z0-9\-\.]+)/);
+        const match = licenseType.match(/\(?\s*([A-Za-z0-9\-.]+)/);
         if (match && licenseUrls[match[1]]) {
             return licenseUrls[match[1]];
         }
diff --git a/frontend/src/components/tools/toolPicker/ToolSearch.tsx b/frontend/src/components/tools/toolPicker/ToolSearch.tsx
index 53a01cb77..d4350044e 100644
--- a/frontend/src/components/tools/toolPicker/ToolSearch.tsx
+++ b/frontend/src/components/tools/toolPicker/ToolSearch.tsx
@@ -126,7 +126,7 @@ const ToolSearch = ({
                 key={id}
                 variant="subtle"
                 onClick={() => {
-                  onToolSelect && onToolSelect(id);
+                  onToolSelect?.(id);
                   setDropdownOpen(false);
                 }}
                 leftSection={<div style={{ color: "var(--tools-text-and-icon-color)" }}>{tool.icon}</div>}
diff --git a/frontend/src/index.tsx b/frontend/src/index.tsx
index 55fe7f046..38a0c1923 100644
--- a/frontend/src/index.tsx
+++ b/frontend/src/index.tsx
@@ -35,8 +35,11 @@ function updatePosthogConsent(){
       return;
     }
     const optIn = (window.CookieConsent as any).acceptedCategory('analytics');
-    optIn?
-      posthog.opt_in_capturing() : posthog.opt_out_capturing();
+    if (optIn) {
+      posthog.opt_in_capturing();
+    } else {
+      posthog.opt_out_capturing();
+    }
 
     console.log("Updated analytics consent: ", optIn? "opted in" : "opted out");
   }
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();