diff --git a/frontends/nextjs/src/hooks/auth/auth-store.ts b/frontends/nextjs/src/hooks/auth/auth-store.ts
index 1dcd0360b..2cc4e85c6 100644
--- a/frontends/nextjs/src/hooks/auth/auth-store.ts
+++ b/frontends/nextjs/src/hooks/auth/auth-store.ts
@@ -18,7 +18,7 @@ export class AuthStore {
     isLoading: false,
   }
 
-  private listeners = new Set<() => void>()
+  private readonly listeners = new Set<() => void>()
   private sessionCheckPromise: Promise<void> | null = null
 
   getState(): AuthState {
@@ -34,7 +34,7 @@ export class AuthStore {
 
   private setState(newState: AuthState): void {
     this.state = newState
-    this.listeners.forEach(listener => listener())
+    this.listeners.forEach(listener => { listener(); })
   }
 
   async ensureSessionChecked(): Promise<void> {
diff --git a/frontends/nextjs/src/hooks/useAuth.ts b/frontends/nextjs/src/hooks/useAuth.ts
index 09f207e68..f737b434e 100644
--- a/frontends/nextjs/src/hooks/useAuth.ts
+++ b/frontends/nextjs/src/hooks/useAuth.ts
@@ -11,7 +11,7 @@ export function useAuth(): UseAuthReturn {
   const [state, setState] = useState<AuthState>(authStore.getState())
 
   useEffect(() => {
-    const unsubscribe = authStore.subscribe(() => setState({ ...authStore.getState() }))
+    const unsubscribe = authStore.subscribe(() => { setState({ ...authStore.getState() }); })
     void authStore.ensureSessionChecked()
     return unsubscribe
   }, [])
diff --git a/frontends/nextjs/src/lib/components/component-catalog.ts b/frontends/nextjs/src/lib/components/component-catalog.ts
index 08f0a18ad..c52ceaf8b 100644
--- a/frontends/nextjs/src/lib/components/component-catalog.ts
+++ b/frontends/nextjs/src/lib/components/component-catalog.ts
@@ -13,7 +13,7 @@ export interface ComponentCatalogEntry {
  * TODO: Implement full component catalog functionality
  */
 export class ComponentCatalog {
-  private components = new Map<string, ComponentCatalogEntry>()
+  private readonly components = new Map<string, ComponentCatalogEntry>()
 
   register(name: string, entry: ComponentCatalogEntry): void {
     this.components.set(name, entry)
diff --git a/frontends/nextjs/src/lib/components/component-registry.ts b/frontends/nextjs/src/lib/components/component-registry.ts
index ba715b6a9..0cbc3f91d 100644
--- a/frontends/nextjs/src/lib/components/component-registry.ts
+++ b/frontends/nextjs/src/lib/components/component-registry.ts
@@ -14,7 +14,7 @@ export interface ComponentMetadata {
  * TODO: Implement full component registry functionality
  */
 export class ComponentRegistry {
-  private registry = new Map<string, ComponentMetadata>()
+  private readonly registry = new Map<string, ComponentMetadata>()
 
   register(id: string, metadata: ComponentMetadata): void {
     this.registry.set(id, metadata)
diff --git a/frontends/nextjs/src/lib/schema/schema-registry.ts b/frontends/nextjs/src/lib/schema/schema-registry.ts
index d0948c6aa..7e5243c97 100644
--- a/frontends/nextjs/src/lib/schema/schema-registry.ts
+++ b/frontends/nextjs/src/lib/schema/schema-registry.ts
@@ -7,7 +7,7 @@ import { readFileSync, writeFileSync, existsSync } from 'fs'
 import { join } from 'path'
 
 export class SchemaRegistry {
-  private schemas: Map<string, ModelSchema> = new Map()
+  private readonly schemas: Map<string, ModelSchema> = new Map()
   packages: Record<string, unknown> = {}
 
   register(schema: ModelSchema): void {
@@ -40,7 +40,7 @@ export function loadSchemaRegistry(path?: string): SchemaRegistry {
       const { schemas, packages } = parsed as { schemas?: unknown; packages?: unknown }
       
       if (Array.isArray(schemas)) {
-        schemas.forEach((schema: ModelSchema) => schemaRegistry.register(schema))
+        schemas.forEach((schema: ModelSchema) => { schemaRegistry.register(schema); })
       }
       
       if (packages !== null && packages !== undefined && typeof packages === 'object') {