diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-delete.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-delete.ts
index 1b2683860..9532f0099 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-delete.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-delete.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 
 export async function blobDelete(key: string): Promise<void> {
   if (!this.blobStorage) throw new Error('DBAL not initialized')
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-download.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-download.ts
index 11b14658a..08747e39c 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-download.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-download.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 
 export async function blobDownload(key: string): Promise<Buffer> {
   if (!this.blobStorage) throw new Error('DBAL not initialized')
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-get-metadata.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-get-metadata.ts
index cefb44da1..db7a36914 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-get-metadata.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-get-metadata.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 
 export async function blobGetMetadata(key: string): Promise<Record<string, string>> {
   if (!this.blobStorage) throw new Error('DBAL not initialized')
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-list.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-list.ts
index 22445aee0..44e141f23 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-list.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-list.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 
 export async function blobList(prefix?: string): Promise<string[]> {
   if (!this.blobStorage) throw new Error('DBAL not initialized')
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-upload.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-upload.ts
index cfb6fb6a5..91f3a19a3 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-upload.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/blob-upload.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 
 // Blob operations
 export async function blobUpload(
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/create-tenant.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/create-tenant.ts
index e8d510c37..996ddf74e 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/create-tenant.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/create-tenant.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 
 interface TenantLimits {
   maxStorage?: number
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-blob-storage.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-blob-storage.ts
index a8865a155..9cf9ced9a 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-blob-storage.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-blob-storage.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 import type { BlobStorage } from '@/dbal/blob/blob-storage'
 
 export function getBlobStorage(this: any): BlobStorage {
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-client.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-client.ts
index ab029593e..1105b40ec 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-client.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-client.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 
 export function getClient(): DBALClient {
   if (!this.client) {
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-instance.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-instance.ts
index cb945a8bb..e53e26722 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-instance.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-instance.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 
 // Note: This was extracted from a class static method
 // The original `this` context is lost, so this function may not work correctly
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-k-v-store.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-k-v-store.ts
index 0dc8af199..19e6dbf89 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-k-v-store.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-k-v-store.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 import type { KVStore } from '@/dbal/core/kv/types'
 
 export function getKVStore(this: any): KVStore {
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-key.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-key.ts
index 9ceb2635d..8f85f0e8d 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-key.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-key.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 import type { TenantContext } from '@/dbal/core/foundation/tenant-context'
 
 export function getKey(key: string, context: TenantContext): string {
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-metadata.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-metadata.ts
index 384077cce..6ee6f49db 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-metadata.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-metadata.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 
 export async function getMetadata(
   key: string
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-tenant-context.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-tenant-context.ts
index e26240e0f..a34ffd991 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-tenant-context.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-tenant-context.ts
@@ -1,10 +1,14 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 import type { TenantContext } from '@/dbal/core/foundation/tenant-context'
 
+interface TenantStore {
+  tenants: Map<string, unknown>
+}
+
 export async function getTenantContext(
-  this: any,
+  this: TenantStore,
   tenantId: string,
-  userId: string
+  _userId: string
 ): Promise<TenantContext | null> {
   if (!this.tenants.has(tenantId)) {
     return null
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-tenant-manager.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-tenant-manager.ts
index ebbdbd6c8..346fe8bba 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-tenant-manager.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/get-tenant-manager.ts
@@ -1,7 +1,11 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 
-// TenantManager is not yet exported from DBAL, using any for now
-export function getTenantManager(this: any): any {
+interface DBALIntegrationContext {
+  tenantManager?: unknown
+}
+
+// TenantManager is not yet exported from DBAL, using unknown for now
+export function getTenantManager(this: DBALIntegrationContext): unknown {
   if (!this.tenantManager) {
     throw new Error('DBAL not initialized. Call initialize() first.')
   }
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/handle-error.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/handle-error.ts
index b2ff358b9..66b1e1701 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/handle-error.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/handle-error.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 import { DBALError, DBALErrorCode } from '@/dbal/core/foundation/errors'
 
 export function handleError(error: unknown): { message: string; code?: DBALErrorCode } {
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/has-tenant.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/has-tenant.ts
index c73ad3501..bc9017cde 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/has-tenant.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/has-tenant.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 
 export function hasTenant(id: string): boolean {
   return this.tenants.has(id)
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/initialize.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/initialize.ts
index f52919e98..8f7201f08 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/initialize.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/initialize.ts
@@ -1,11 +1,19 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 import { InMemoryKVStore } from '@/dbal/core/kv'
 import { MemoryStorage } from '@/dbal/blob/providers/memory-storage'
 
+interface DBALIntegrationState {
+  initialized?: boolean
+  tenantManager?: unknown
+  kvStore?: InMemoryKVStore
+  blobStorage?: MemoryStorage
+  client?: _DBALClient
+}
+
 /**
  * Initialize the DBAL client with configuration
  */
-export async function initialize(this: any, config?: Partial<DBALConfig>): Promise<void> {
+export async function initialize(this: DBALIntegrationState, config?: Partial<_DBALConfig>): Promise<void> {
   if (this.initialized) {
     console.warn('DBAL already initialized')
     return
@@ -22,16 +30,15 @@ export async function initialize(this: any, config?: Partial<DBALConfig>): Promi
     this.blobStorage = new MemoryStorage()
 
     // Initialize DBAL client
-    const dbalConfig: DBALConfig = {
+    const dbalConfig: _DBALConfig = {
       mode: 'development',
       adapter: config?.adapter || 'prisma',
       ...config,
-    }
+    } as _DBALConfig
 
-    this.client = new DBALClient(dbalConfig)
+    this.client = new _DBALClient(dbalConfig)
 
     this.initialized = true
-    console.log('DBAL Integration initialized successfully')
   } catch (error) {
     console.error('Failed to initialize DBAL:', error)
     throw error
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/is-initialized.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/is-initialized.ts
index aaee80a04..7625f90c4 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/is-initialized.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/is-initialized.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 
 export function isInitialized(): boolean {
   return this.initialized
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/kv-get.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/kv-get.ts
index 8dc3b8e47..74f1f7973 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/kv-get.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/kv-get.ts
@@ -5,8 +5,8 @@ import type { JsonValue } from '@/types/utility-types'
 // The original `this` context is lost, so this function may not work correctly
 export async function kvGet<T = JsonValue>(
   key: string,
-  tenantId = 'default',
-  userId = 'system'
+  _tenantId = 'default',
+  _userId = 'system'
 ): Promise<T | null> {
   // Original code referenced this.kvStore and this.tenantManager which don't exist here
   // TODO: Review and fix this extraction
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/kv-list-add.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/kv-list-add.ts
index 06911c14c..644238ab5 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/kv-list-add.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/kv-list-add.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 import type { JsonValue } from '@/types/utility-types'
 
 export async function kvListAdd(
diff --git a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/kv-list-get.ts b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/kv-list-get.ts
index fd18d606f..09fb50b7e 100644
--- a/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/kv-list-get.ts
+++ b/frontends/nextjs/src/lib/dbal/core/client/dbal-integration/functions/kv-list-get.ts
@@ -1,4 +1,4 @@
-import { DBALClient, type DBALConfig } from '@/dbal'
+import type { DBALClient as _DBALClient, DBALConfig as _DBALConfig } from '@/dbal'
 import type { JsonValue } from '@/types/utility-types'
 
 export async function kvListGet(
diff --git a/frontends/nextjs/src/lib/dbal/daemon/client.ts b/frontends/nextjs/src/lib/dbal/daemon/client.ts
index 5594a0795..d296cb9df 100644
--- a/frontends/nextjs/src/lib/dbal/daemon/client.ts
+++ b/frontends/nextjs/src/lib/dbal/daemon/client.ts
@@ -27,7 +27,7 @@ export async function callDaemon<T = unknown>(request: DaemonRpcRequest): Promis
   let body: { success?: boolean; message?: string; data?: T }
   try {
     body = (await response.json()) as typeof body
-  } catch (_error) {
+  } catch {
     throw new Error('Failed to parse response from DBAL daemon')
   }