fix: resolve API URL duplication, CORS issues, and image localhost URLs

- Fix duplicate /api/v1 in analytics.ts API calls
- Add STRAPI_PUBLIC_URL env var for public CMS access
- Update strapi.service to use public URL for images instead of localhost
- Images now use https://cms.placebo.mk instead of http://localhost:1337

backend/src/modules/strapi.service.ts

@@ -87,6 +87,7 @@ interface StrapiResponse<T> {
 export class StrapiService {
   private readonly logger = new Logger(StrapiService.name);
   private readonly strapiUrl: string;
+  private readonly strapiPublicUrl: string;
   private readonly strapiApiToken: string;
 
   constructor(
@@ -101,6 +102,9 @@ export class StrapiService {
   ) {
     this.strapiUrl =
       this.configService.get<string>('STRAPI_URL') || 'http://localhost:1337';
+    this.strapiPublicUrl =
+      this.configService.get<string>('STRAPI_PUBLIC_URL') ||
+      this.strapiUrl.replace('cms:', 'localhost:');
     this.strapiApiToken =
       this.configService.get<string>('STRAPI_API_TOKEN') || '';
   }
@@ -182,10 +186,8 @@ export class StrapiService {
 
     // If URL is relative, prepend Strapi base URL
     if (imageUrl.startsWith('/')) {
-      // Convert Docker service URL to localhost for frontend access
-      // Backend uses http://cms:1337 internally, but frontend needs http://localhost:1337
-      const frontendStrapiUrl = this.strapiUrl.replace('cms:', 'localhost:');
-      return `${frontendStrapiUrl}${imageUrl}`;
+      // Use public URL for frontend access
+      return `${this.strapiPublicUrl}${imageUrl}`;
     }
 
     return imageUrl;
@@ -210,10 +212,8 @@ export class StrapiService {
 
     // If URL is relative, prepend Strapi base URL
     if (imageUrl.startsWith('/')) {
-      // Convert Docker service URL to localhost for frontend access
-      // Backend uses http://cms:1337 internally, but frontend needs http://localhost:1337
-      const frontendStrapiUrl = this.strapiUrl.replace('cms:', 'localhost:');
-      return `${frontendStrapiUrl}${imageUrl}`;
+      // Use public URL for frontend access
+      return `${this.strapiPublicUrl}${imageUrl}`;
     }
 
     return imageUrl;