diff --git a/src/components/auth/AuthModal.tsx b/src/components/auth/AuthModal.tsx
index f47af9f1..3f416c66 100644
--- a/src/components/auth/AuthModal.tsx
+++ b/src/components/auth/AuthModal.tsx
@@ -18,6 +18,7 @@ import { setAuthMethod } from '@/lib/sessionFlags';
 import { validateEmailNotDisposable } from '@/lib/emailValidation';
 import { getErrorMessage } from '@/lib/errorHandler';
 import { logger } from '@/lib/logger';
+import type { SignInOptions } from '@/types/supabase-auth';
 
 interface AuthModalProps {
   open: boolean;
@@ -70,7 +71,7 @@ export function AuthModal({ open, onOpenChange, defaultTab = 'signin' }: AuthMod
     setSignInCaptchaToken(null);
 
     try {
-      const signInOptions: any = {
+      const signInOptions: SignInOptions = {
         email: formData.email,
         password: formData.password,
       };
diff --git a/src/components/moderation/SubmissionReviewManager.tsx b/src/components/moderation/SubmissionReviewManager.tsx
index 9bb48a07..f2439e45 100644
--- a/src/components/moderation/SubmissionReviewManager.tsx
+++ b/src/components/moderation/SubmissionReviewManager.tsx
@@ -297,8 +297,9 @@ export function SubmissionReviewManager({
         description: `Successfully approved ${selectedItemIds.size} item(s)${requestId ? ` (Request: ${requestId.substring(0, 8)})` : ''}`,
       });
 
-      const successCount = data.results.filter((r: any) => r.success).length;
-      const failCount = data.results.filter((r: any) => !r.success).length;
+      interface ApprovalResult { success: boolean; item_id: string; error?: string }
+      const successCount = data.results.filter((r: ApprovalResult) => r.success).length;
+      const failCount = data.results.filter((r: ApprovalResult) => !r.success).length;
 
       const allFailed = failCount > 0 && successCount === 0;
       const someFailed = failCount > 0 && successCount > 0;
diff --git a/src/hooks/moderation/useProfileCache.ts b/src/hooks/moderation/useProfileCache.ts
index 66da9d07..1ed9af12 100644
--- a/src/hooks/moderation/useProfileCache.ts
+++ b/src/hooks/moderation/useProfileCache.ts
@@ -3,6 +3,7 @@ import { supabase } from '@/integrations/supabase/client';
 import { logger } from '@/lib/logger';
 import { getErrorMessage } from '@/lib/errorHandler';
 import { MODERATION_CONSTANTS } from '@/lib/moderation/constants';
+import type { ModerationItem } from '@/types/moderation';
 
 /**
  * Profile data structure returned from the database
@@ -143,7 +144,7 @@ export function useProfileCache() {
    * @param submissions - Array of submissions with user_id and reviewer_id
    * @returns Map of userId -> profile for all users involved
    */
-  const fetchForSubmissions = useCallback(async (submissions: any[]): Promise<Map<string, CachedProfile>> => {
+  const fetchForSubmissions = useCallback(async (submissions: ModerationItem[]): Promise<Map<string, CachedProfile>> => {
     const userIds = submissions.map(s => s.user_id).filter(Boolean);
     const reviewerIds = submissions.map(s => s.reviewer_id).filter((id): id is string => !!id);
     const allUserIds = [...new Set([...userIds, ...reviewerIds])];
diff --git a/src/hooks/moderation/useRealtimeSubscriptions.ts b/src/hooks/moderation/useRealtimeSubscriptions.ts
index e112cd6a..533491dd 100644
--- a/src/hooks/moderation/useRealtimeSubscriptions.ts
+++ b/src/hooks/moderation/useRealtimeSubscriptions.ts
@@ -12,6 +12,7 @@ import { logger } from '@/lib/logger';
 import { getErrorMessage } from '@/lib/errorHandler';
 import { MODERATION_CONSTANTS } from '@/lib/moderation/constants';
 import type { RealtimeChannel, RealtimePostgresChangesPayload } from '@supabase/supabase-js';
+import type { Json } from '@/integrations/supabase/types';
 import type { ModerationItem, EntityFilter, StatusFilter } from '@/types/moderation';
 import type { useEntityCache } from './useEntityCache';
 import type { useProfileCache } from './useProfileCache';
@@ -176,7 +177,7 @@ export function useRealtimeSubscriptions(
   /**
    * Resolve entity names for a submission
    */
-  const resolveEntityNames = useCallback(async (submission: any) => {
+  const resolveEntityNames = useCallback(async (submission: { submission_type: string; content: Json }) => {
     const content = submission.content as SubmissionContent;
     let entityName = content?.name || 'Unknown';
     let parkName: string | undefined;
diff --git a/src/hooks/useAdminGuard.ts b/src/hooks/useAdminGuard.ts
index ed304dc0..e23c7f38 100644
--- a/src/hooks/useAdminGuard.ts
+++ b/src/hooks/useAdminGuard.ts
@@ -1,5 +1,6 @@
 import { useEffect } from 'react';
 import { useNavigate } from 'react-router-dom';
+import type { User } from '@supabase/supabase-js';
 import { useAuth } from './useAuth';
 import { useUserRole } from './useUserRole';
 import { useRequireMFA } from './useRequireMFA';
@@ -15,7 +16,7 @@ export interface AdminGuardState {
   needsMFA: boolean;
   
   /** Current authenticated user */
-  user: any;
+  user: User | null;
 }
 
 /**
diff --git a/src/types/moderation.ts b/src/types/moderation.ts
index 15f175ae..eca3b0d9 100644
--- a/src/types/moderation.ts
+++ b/src/types/moderation.ts
@@ -164,6 +164,9 @@ export interface ModerationItem {
   reviewed_at?: string;
   
   /** ID of the moderator who reviewed this item */
+  reviewer_id?: string;
+  
+  /** Username of the moderator who reviewed this item */
   reviewed_by?: string;
   
   /** Notes left by the reviewing moderator */
diff --git a/src/types/supabase-auth.ts b/src/types/supabase-auth.ts
new file mode 100644
index 00000000..65ac64a0
--- /dev/null
+++ b/src/types/supabase-auth.ts
@@ -0,0 +1,24 @@
+/**
+ * Extended Supabase Auth Types
+ * Supabase auth methods accept options objects not fully typed in official SDK
+ */
+
+export interface SignInOptions {
+  email: string;
+  password: string;
+  options?: {
+    captchaToken?: string;
+  };
+}
+
+export interface SignUpOptions {
+  email: string;
+  password: string;
+  options?: {
+    data?: {
+      username?: string;
+      display_name?: string;
+    };
+    captchaToken?: string;
+  };
+}