Flatten repo structure: move crawler/ to root, remove vqa/ and immoweb/

The crawler subdirectory was the only active project. Moving it to the
repo root simplifies paths and removes the unnecessary nesting. The
vqa/ and immoweb/ directories were legacy/unused and have been removed.

Updated .drone.yml, .gitignore, .claude/ docs, and skills to reflect
the new flat structure.

frontend/src/services/taskService.ts

@@ -0,0 +1,58 @@
+// Task service for fetching task status
+
+import type { AuthUser } from '@/auth/types';
+import type { TaskStatusResponse } from '@/types';
+import { apiRequest } from './apiClient';
+import { API_ENDPOINTS } from '@/constants';
+
+export interface CancelTaskResponse {
+  success: boolean;
+  message: string;
+}
+
+export interface ClearAllTasksResponse {
+  success: boolean;
+  count: number;
+  message: string;
+}
+
+/**
+ * Fetch all active tasks for the current user
+ */
+export async function fetchTasksForUser(user: AuthUser): Promise<string[]> {
+  return apiRequest<string[]>(user, API_ENDPOINTS.TASKS_FOR_USER);
+}
+
+/**
+ * Fetch the status of a specific task
+ */
+export async function fetchTaskStatus(
+  user: AuthUser,
+  taskId: string
+): Promise<TaskStatusResponse> {
+  return apiRequest<TaskStatusResponse>(user, API_ENDPOINTS.TASK_STATUS, {
+    params: { task_id: taskId },
+  });
+}
+
+/**
+ * Cancel a running task
+ */
+export async function cancelTask(
+  user: AuthUser,
+  taskId: string
+): Promise<CancelTaskResponse> {
+  return apiRequest<CancelTaskResponse>(user, API_ENDPOINTS.CANCEL_TASK, {
+    method: 'POST',
+    params: { task_id: taskId },
+  });
+}
+
+/**
+ * Clear all tasks for the current user
+ */
+export async function clearAllTasks(user: AuthUser): Promise<ClearAllTasksResponse> {
+  return apiRequest<ClearAllTasksResponse>(user, API_ENDPOINTS.CLEAR_ALL_TASKS, {
+    method: 'POST',
+  });
+}