fix(agent-client): normalize path joining in HttpRequester

When api_endpoint has no trailing slash and action endpoints have no
leading slash, the URL concatenation produces broken paths like
/backoffice/v1forest/actions/... instead of /backoffice/v1/forest/actions/...

Extract a buildUrl() method that ensures the path always starts with /
before concatenation.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: alban bertolini

packages/agent-client/src/http-requester.ts

@@ -35,7 +35,7 @@ export default class HttpRequester {
     contentType?: 'application/json' | 'text/csv';
   }): Promise<Data> {
     try {
-      const url = new URL(`${this.baseUrl}${HttpRequester.escapeUrlSlug(path)}`).toString();
+      const url = this.buildUrl(path);
 
       const req = superagent[method](url)
         .timeout(maxTimeAllowed ?? 10_000)
@@ -73,7 +73,7 @@ export default class HttpRequester {
     maxTimeAllowed?: number;
     stream: WriteStream;
   }): Promise<void> {
-    const url = new URL(`${this.baseUrl}${HttpRequester.escapeUrlSlug(reqPath)}`).toString();
+    const url = this.buildUrl(reqPath);
 
     return new Promise<void>((resolve, reject) => {
       superagent
@@ -97,4 +97,10 @@ export default class HttpRequester {
   static escapeUrlSlug(name: string): string {
     return encodeURI(name).replace(/([+?*])/g, '\\$1');
   }
+
+  private buildUrl(path: string): string {
+    const normalizedPath = path.startsWith('/') ? path : `/${path}`;
+
+    return new URL(`${this.baseUrl}${HttpRequester.escapeUrlSlug(normalizedPath)}`).toString();
+  }
 }

packages/agent-client/test/http-requester.test.ts

@@ -160,6 +160,18 @@ describe('HttpRequester', () => {
       });
     });
 
+    it('should normalize path without leading slash', async () => {
+      mockRequest.then = jest.fn((onFulfilled: any) => {
+        return Promise.resolve(onFulfilled({ body: {} }));
+      });
+
+      await requester.query({ method: 'get', path: 'forest/actions/my-action' });
+
+      expect(mockSuperagent.get).toHaveBeenCalledWith(
+        'https://api.example.com/forest/actions/my-action',
+      );
+    });
+
     it('should handle URL with prefix', async () => {
       const requesterWithPrefix = new HttpRequester('test-token', {
         url: 'https://api.example.com',