refactor: update login() signature to require all parameters

- Remove default values for username, password, url, headless, ignore_https_errors
- Update docstring to reflect required parameters
- Maintain backward compatibility with 4-tuple return value

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

utils/auth.py

@@ -7,11 +7,11 @@ from playwright.sync_api import Playwright, Browser, BrowserContext, Page, Frame
 
 def login(
     playwright: Playwright,
-    username: str = None,
-    password: str = None,
-    url: str = None,
-    headless: bool = None,
-    ignore_https_errors: bool = None,
+    username: str,
+    password: str,
+    url: str,
+    headless: bool,
+    ignore_https_errors: bool,
     verbose: bool = True,
 ) -> tuple[Browser, BrowserContext, Page, Frame]:
     """
@@ -19,12 +19,12 @@ def login(
 
     Args:
         playwright: Playwright instance
-        username: Username (default read from environment variable ERP_USERNAME)
-        password: Password (default read from environment variable ERP_PASSWORD)
-        url: Login page URL (default read from environment variable ERP_URL)
-        headless: Whether to use headless mode (default read from environment variable ERP_HEADLESS)
-        ignore_https_errors: Whether to ignore HTTPS errors (default read from environment variable ERP_IGNORE_HTTPS_ERRORS)
-        verbose: Whether to print detailed logs
+        username: Username (required)
+        password: Password (required)
+        url: Complete login page URL (required)
+        headless: Whether to use headless mode (required)
+        ignore_https_errors: Whether to ignore HTTPS errors (required)
+        verbose: Whether to print detailed logs (default: True)
 
     Returns:
         tuple: (browser, context, page, main_frame)