fix: replace hardcoded localhost API URLs with relative paths

All client hooks were falling back to http://localhost:3001/api
which resolves to the user's browser machine, not the server.
Changed to /api (relative) so requests go to the same origin
in production, while Vite's dev proxy still handles local dev.

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

Author: Syntax-Error-1337

client/src/modules/maritime/hooks/useMaritimeSnapshot.ts

@@ -28,7 +28,7 @@ export function useMaritimeSnapshot() {
   return useQuery<MaritimeSnapshotResponse>({
     queryKey: ['maritime', 'snapshot'],
     queryFn: async () => {
-      const API_URL = import.meta.env.VITE_API_URL || 'http://localhost:3001/api';
+      const API_URL = import.meta.env.VITE_API_URL || '/api';
       const res = await fetch(`${API_URL}/maritime/snapshot`);
       if (!res.ok) {
         throw new Error('Network error fetching maritime snapshot');

client/src/modules/maritime/hooks/useVesselDetail.ts

@@ -1,7 +1,7 @@
 import { useQuery } from '@tanstack/react-query';
 import type { VesselState } from './useMaritimeSnapshot';
 
-const API_URL = import.meta.env.VITE_API_URL || 'http://localhost:3001/api';
+const API_URL = import.meta.env.VITE_API_URL || '/api';
 
 /**
  * Fetches full vessel detail — including route history — for the selected vessel.

client/src/modules/monitor/hooks/useGPSJammingData.ts

@@ -1,7 +1,7 @@
 import { useEffect } from 'react';
 import { useGPSJammingStore } from '../gpsJamming.store';
 
-const API_BASE = import.meta.env.VITE_API_URL || 'http://localhost:3001/api';
+const API_BASE = import.meta.env.VITE_API_URL || '/api';
 
 /**
  * Hook to fetch and manage GPS jamming data

client/src/modules/monitor/hooks/useGulfWatchAlerts.ts

@@ -1,6 +1,6 @@
 import { useQuery } from '@tanstack/react-query';
 
-const API_BASE = import.meta.env.VITE_API_URL || 'http://localhost:3001/api';
+const API_BASE = import.meta.env.VITE_API_URL || '/api';
 
 export interface AlertDescription {
   ar: string;

client/src/modules/monitor/hooks/useMilitaryBases.ts

@@ -1,6 +1,6 @@
 import { useQuery } from '@tanstack/react-query';
 
-const API_BASE = import.meta.env.VITE_API_URL || 'http://localhost:3001/api';
+const API_BASE = import.meta.env.VITE_API_URL || '/api';
 
 export type BaseCategory = 'air' | 'naval' | 'ground' | 'hq';
 

client/src/modules/monitor/hooks/useRocketAlerts.ts

@@ -1,6 +1,6 @@
 import { useQuery } from '@tanstack/react-query';
 
-const API_BASE = import.meta.env.VITE_API_URL || 'http://localhost:3001/api';
+const API_BASE = import.meta.env.VITE_API_URL || '/api';
 
 export interface RocketAlertItem {
   name: string;

client/src/modules/osint/hooks/useIntelBrief.ts

@@ -14,7 +14,7 @@ interface IntelBriefResponse {
 export function useIntelBrief() {
   return useMutation({
     mutationFn: async (reqData: IntelBriefRequest) => {
-      const res = await fetch('http://localhost:3001/api/geo/intel-brief', {
+      const res = await fetch('/api/geo/intel-brief', {
         method: 'POST',
         headers: {
           'Content-Type': 'application/json',

client/src/modules/osint/hooks/useOsintNews.ts

@@ -21,7 +21,7 @@ export function useOsintNews(lat: number, lon: number, category: string, enabled
     queryKey: ['osint-news', Math.round(lat), Math.round(lon), category], // Round to 1 degree to avoid over-fetching
     queryFn: async () => {
       const res = await fetch(
-        `http://localhost:3001/api/geo/news?lat=${lat}&lon=${lon}&category=${encodeURIComponent(category)}`,
+        `/api/geo/news?lat=${lat}&lon=${lon}&category=${encodeURIComponent(category)}`,
       );
       if (!res.ok) {
         throw new Error('Failed to fetch OSINT news');