chore: refactor project structure and clean up unused components

- Updated `TODO.md` to reflect new testing tasks and final structure expectations.
- Simplified TypeScript path mappings in `tsconfig.json` for better clarity.
- Revised business logic separation rules in `.cursor/rules` to align with new directory structure.
- Deleted unused client components and services to streamline the codebase.
- Adjusted import paths in scripts to match the new structure.

src/clients/jira-client.ts

@@ -0,0 +1,36 @@
+/**
+ * Client pour l'API Jira
+ */
+
+import { HttpClient } from './base/http-client';
+import { JiraSyncResult } from '@/services/jira';
+
+export interface JiraConnectionStatus {
+  connected: boolean;
+  message: string;
+  details?: string;
+}
+
+export class JiraClient extends HttpClient {
+  constructor() {
+    super('/api/jira');
+  }
+
+  /**
+   * Teste la connexion à Jira
+   */
+  async testConnection(): Promise<JiraConnectionStatus> {
+    return this.get<JiraConnectionStatus>('/sync');
+  }
+
+  /**
+   * Lance la synchronisation manuelle des tickets Jira
+   */
+  async syncTasks(): Promise<JiraSyncResult> {
+    const response = await this.post<{ data: JiraSyncResult }>('/sync');
+    return response.data;
+  }
+}
+
+// Instance singleton
+export const jiraClient = new JiraClient();