diff --git a/src/utils/PlatformServiceMixin.ts b/src/utils/PlatformServiceMixin.ts
index 2d80d870..ace6cc2e 100644
--- a/src/utils/PlatformServiceMixin.ts
+++ b/src/utils/PlatformServiceMixin.ts
@@ -35,7 +35,10 @@
  */
 
 import { PlatformServiceFactory } from "@/services/PlatformServiceFactory";
-import type { PlatformService } from "@/services/PlatformService";
+import type {
+  PlatformService,
+  PlatformCapabilities,
+} from "@/services/PlatformService";
 import { mapColumnsToValues, parseJsonField } from "@/db/databaseUtil";
 import { MASTER_SETTINGS_KEY, type Settings } from "@/db/tables/settings";
 import * as databaseUtil from "@/db/databaseUtil";
@@ -671,9 +674,12 @@ export const PlatformServiceMixin = {
  */
 export interface IPlatformServiceMixin {
   platformService: PlatformService;
-  $dbQuery(sql: string, params?: unknown[]): Promise<any>;
-  $dbExec(sql: string, params?: unknown[]): Promise<any>;
-  $dbGetOneRow(sql: string, params?: unknown[]): Promise<any>;
+  $dbQuery(
+    sql: string,
+    params?: unknown[],
+  ): Promise<QueryExecResult | undefined>;
+  $dbExec(sql: string, params?: unknown[]): Promise<DatabaseExecResult>;
+  $dbGetOneRow(sql: string, params?: unknown[]): Promise<unknown[] | undefined>;
   $getSettings(
     key: string,
     fallback?: Settings | null,
@@ -687,7 +693,7 @@ export interface IPlatformServiceMixin {
   isCapacitor: boolean;
   isWeb: boolean;
   isElectron: boolean;
-  capabilities: any;
+  capabilities: PlatformCapabilities;
 }
 
 // TypeScript declaration merging to eliminate (this as any) type assertions
@@ -698,7 +704,7 @@ declare module "@vue/runtime-core" {
     isCapacitor: boolean;
     isWeb: boolean;
     isElectron: boolean;
-    capabilities: any;
+    capabilities: PlatformCapabilities;
 
     // Ultra-concise database methods (shortest possible names)
     $db(sql: string, params?: unknown[]): Promise<QueryExecResult | undefined>;
@@ -716,9 +722,15 @@ declare module "@vue/runtime-core" {
     ): Promise<T | null>;
 
     // Enhanced utility methods
-    $dbQuery(sql: string, params?: unknown[]): Promise<any>;
-    $dbExec(sql: string, params?: unknown[]): Promise<any>;
-    $dbGetOneRow(sql: string, params?: unknown[]): Promise<any>;
+    $dbQuery(
+      sql: string,
+      params?: unknown[],
+    ): Promise<QueryExecResult | undefined>;
+    $dbExec(sql: string, params?: unknown[]): Promise<DatabaseExecResult>;
+    $dbGetOneRow(
+      sql: string,
+      params?: unknown[],
+    ): Promise<unknown[] | undefined>;
     $getSettings(
       key: string,
       defaults?: Settings | null,