feat(auth): add login/password authentication strategy

- KeyDescriptor now accepts optional login field alongside keyFile
- when login is present, clicks login/password auth method, fills email+password fields, and submits
- file-key flow unchanged; validation ensures exactly one strategy is present

src/auth/auth.service.ts

@@ -14,7 +14,8 @@ import { SessionService } from '../session/session.service';
 import { EnvironmentService } from '../environment/environment.service';
 
 interface KeyDescriptor {
-  keyFile: string;
+  keyFile?: string;
+  login?: string;
   password: string;
 }
 
@@ -64,9 +65,16 @@ export class AuthService {
       throw new BadRequestException(`Cannot read key descriptor: ${keyId}`, { cause: err });
     }
 
-    const keyFilePath = path.resolve(this.keysDir, descriptor.keyFile);
-    if (!fs.existsSync(keyFilePath)) {
-      throw new BadRequestException(`Key file not found: ${descriptor.keyFile}`);
+    const useLoginPassword = !!descriptor.login;
+
+    if (!useLoginPassword) {
+      if (!descriptor.keyFile) {
+        throw new BadRequestException(`Key descriptor for "${keyId}" must have either "login" or "keyFile"`);
+      }
+      const keyFilePath = path.resolve(this.keysDir, descriptor.keyFile);
+      if (!fs.existsSync(keyFilePath)) {
+        throw new BadRequestException(`Key file not found: ${descriptor.keyFile}`);
+      }
     }
 
     const browser = await chromium.launch({ headless: true, executablePath: process.env.PLAYWRIGHT_CHROMIUM_EXECUTABLE_PATH });
@@ -77,20 +85,34 @@ export class AuthService {
       this.logger.log(`Navigating to ${loginUrl}`);
       await page.goto(loginUrl, { waitUntil: 'networkidle' });
 
-      // Click "Файловий ключ" button
-      await page.getByText('Файловий ключ').click();
+      if (useLoginPassword) {
+        // Click "Логін і пароль" auth method
+        await page.locator('p[aria-label="Логін і пароль"]').click();
 
-      // Upload key file via hidden file input
-      const fileInput = page.locator('input[accept=".dat,.pfx,.pk8,.zs2,.jks"][type="file"]');
-      await fileInput.setInputFiles(keyFilePath);
+        // Fill login and password
+        await page.getByLabel('Електронна пошта').fill(descriptor.login!);
+        await page.getByLabel('Пароль').fill(descriptor.password);
 
-      // Enter password
-      await page
-        .locator('#id-app-login-file-key-password')
-        .fill(descriptor.password);
+        // Click "Увійти"
+        await page.locator('button:has-text("Увійти")').click();
+      } else {
+        const keyFilePath = path.resolve(this.keysDir, descriptor.keyFile!);
 
-      // Click "Продовжити"
-      await page.locator('#id-app-login-file-key-sign-button').click();
+        // Click "Файловий ключ" button
+        await page.getByText('Файловий ключ').click();
+
+        // Upload key file via hidden file input
+        const fileInput = page.locator('input[accept=".dat,.pfx,.pk8,.zs2,.jks"][type="file"]');
+        await fileInput.setInputFiles(keyFilePath);
+
+        // Enter password
+        await page
+          .locator('#id-app-login-file-key-password')
+          .fill(descriptor.password);
+
+        // Click "Продовжити"
+        await page.locator('#id-app-login-file-key-sign-button').click();
+      }
 
       // Wait until redirected to cabinet
       this.logger.log(`Waiting for redirect to ${cabinetUrl}`);