fix(media): handle missing path parameter and improve error logging

- Updated `getFile` method to validate `path` query parameter.
- Added improved logging for file retrieval errors.
- Updated test cases to cover scenarios with missing `path`.

backend/src/media/media.controller.spec.ts

@@ -49,6 +49,13 @@ describe("MediaController", () => {
 			expect(stream.pipe).toHaveBeenCalledWith(res);
 		});
 
+		it("should throw NotFoundException if path is missing", async () => {
+			const res = {} as unknown as Response;
+			await expect(controller.getFile("", res)).rejects.toThrow(
+				NotFoundException,
+			);
+		});
+
 		it("should throw NotFoundException if file is not found", async () => {
 			mockS3Service.getFileInfo.mockRejectedValue(new Error("Not found"));
 			const res = {} as unknown as Response;