diff --git a/frontend/hooks/useUpdateAsset.ts b/frontend/hooks/useUpdateAsset.ts
new file mode 100644
index 00000000..d0f886b7
--- /dev/null
+++ b/frontend/hooks/useUpdateAsset.ts
@@ -0,0 +1,36 @@
+'use client';
+
+import { useMutation, useQueryClient } from '@tanstack/react-query';
+import { assetApiClient } from '@/lib/api/assets';
+import { queryKeys } from '@/lib/query/keys';
+import type { Asset } from '@/lib/query/types/asset';
+
+export function useUpdateAsset(assetId: string) {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: (data: Record<string, unknown>) =>
+      assetApiClient.updateAsset(assetId, data),
+
+    onMutate: async (newData) => {
+      // Optimistic update
+      await queryClient.cancelQueries({ queryKey: queryKeys.assets.detail(assetId) });
+      const previousAsset = queryClient.getQueryData<Asset>(queryKeys.assets.detail(assetId));
+      if (previousAsset) {
+        queryClient.setQueryData<Asset>(queryKeys.assets.detail(assetId), { ...previousAsset, ...newData });
+      }
+      return { previousAsset };
+    },
+
+    onError: (_err, _newData, context) => {
+      // Rollback on error
+      if (context?.previousAsset) {
+        queryClient.setQueryData(queryKeys.assets.detail(assetId), context.previousAsset);
+      }
+    },
+
+    onSettled: () => {
+      queryClient.invalidateQueries({ queryKey: queryKeys.assets.detail(assetId) });
+    },
+  });
+}
\ No newline at end of file
diff --git a/frontend/lib/api/asset-photos.ts b/frontend/lib/api/asset-photos.ts
new file mode 100644
index 00000000..f1c379fc
--- /dev/null
+++ b/frontend/lib/api/asset-photos.ts
@@ -0,0 +1,27 @@
+import { api } from '../api';
+
+export interface AssetPhoto {
+  id: string;
+  url: string;
+  isPrimary: boolean;
+  createdAt: string;
+}
+
+export const assetPhotosApiClient = {
+  list: (assetId: string): Promise<AssetPhoto[]> =>
+    api.get<AssetPhoto[]>(`/assets/${assetId}/photos`).then((r) => r.data),
+
+  upload: (assetId: string, file: File): Promise<AssetPhoto> => {
+    const form = new FormData();
+    form.append('file', file);
+    return api.post<AssetPhoto>(`/assets/${assetId}/photos`, form, {
+      headers: { 'Content-Type': 'multipart/form-data' },
+    }).then((r) => r.data);
+  },
+
+  delete: (assetId: string, photoId: string): Promise<void> =>
+    api.delete(`/assets/${assetId}/photos/${photoId}`).then(() => undefined),
+
+  setPrimary: (assetId: string, photoId: string): Promise<AssetPhoto> =>
+    api.patch<AssetPhoto>(`/assets/${assetId}/photos/${photoId}/primary`).then((r) => r.data),
+};
\ No newline at end of file
diff --git a/frontend/lib/api/http-client.ts b/frontend/lib/api/http-client.ts
new file mode 100644
index 00000000..d9a74a94
--- /dev/null
+++ b/frontend/lib/api/http-client.ts
@@ -0,0 +1,20 @@
+/**
+ * Single HTTP client for the frontend.
+ *
+ * All API requests should go through the `api` axios instance from `lib/api.ts`.
+ * Per-resource modules in `lib/api/*.ts` wrap specific endpoints.
+ *
+ * The legacy `apiClient.request` wrapper in `lib/api/client.ts` is deprecated;
+ * new code should use the resource modules directly. Raw `fetch('/api/...')`
+ * calls should be replaced with `api.get/post/patch/delete(...)` to ensure
+ * the correct base URL and auth token are attached.
+ *
+ * @example
+ * import { api } from '@/lib/api';
+ * const { data } = await api.get('/assets');
+ *
+ * @example
+ * import { assetApiClient } from '@/lib/api/assets';
+ * const assets = await assetApiClient.getAssets();
+ */
+export { api } from '../api';
\ No newline at end of file
diff --git a/frontend/next.config.ts b/frontend/next.config.ts
index de2d453e..0aa712e8 100644
--- a/frontend/next.config.ts
+++ b/frontend/next.config.ts
@@ -2,6 +2,29 @@ import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
   output: "standalone",
+  poweredByHeader: false,
+  images: {
+    remotePatterns: [
+      { protocol: "https", hostname: "**" },
+    ],
+  },
+  async headers() {
+    return [
+      {
+        source: "/(.*)",
+        headers: [
+          { key: "X-Frame-Options", value: "DENY" },
+          { key: "X-Content-Type-Options", value: "nosniff" },
+          { key: "Referrer-Policy", value: "strict-origin-when-cross-origin" },
+          { key: "Permissions-Policy", value: "camera=(), microphone=(), geolocation=()" },
+          {
+            key: "Content-Security-Policy",
+            value: "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; connect-src 'self' http://localhost:6003 ws://localhost:6003 https://horizon-testnet.stellar.org https://soroban-testnet.stellar.org; font-src 'self' data:;",
+          },
+        ],
+      },
+    ];
+  },
 };
 
 export default nextConfig;
\ No newline at end of file