feat: Add Bookys scraper alongside EBoek with startup mode chooser

Adds a second scraper for bookys-ebooks.com that harvests direct 1fichier
download URLs into a .txt file. The existing EBoek scraper core is unchanged;
only the GUI gained a Mode menu entry to switch between the two.

Bookys specifics:
- Visible (never headless) browser, since the site is behind Cloudflare.
  The challenge is auto-detected: the scraper polls for real listing items
  and continues on its own once it clears, no button needed.
- Persistent Chrome profile in ~/.eboek_scraper/bookys_chrome_profile so the
  Cloudflare clearance cookie survives between runs. Removed the hardcoded
  user-agent override, which claimed Chrome/120 against a real Chrome/150 and
  invalidated that cookie on every launch.
- Pop-up ads are avoided by never clicking host links: hrefs are read and
  navigated to directly, with window.open neutered via CDP as a backstop.
- Host links are read with textContent rather than Selenium's .text, which
  returns empty for these elements because they sit in a collapsed container.
- Only 1fichier hosts are followed; other hosts on a page are ignored.

Build configs list the new modules as hidden imports in all four places.
gui_main imports the Bookys window lazily, so PyInstaller's static analysis
would otherwise miss it and the .exe would crash on switching modes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NVJc2XuTvqBHSuqotetseS

gui_main.py

@@ -59,7 +59,8 @@ class EBoekScraperApp(QApplication):
         # Handle exceptions
         sys.excepthook = self.handle_exception
 
-        self.main_window = None
+        self.main_window = None      # EBoek window
+        self.bookys_window = None    # Bookys window
 
     def set_application_icon(self):
         """Set the application icon if available."""
@@ -101,9 +102,16 @@ class EBoekScraperApp(QApplication):
             # Check system requirements
             self.check_requirements()
 
-            # Create and show main window
-            self.main_window = MainWindow()
-            self.main_window.show()
+            # Ask which site to scrape, then show the matching window.
+            from gui.startup_dialog import StartupDialog
+            chooser = StartupDialog()
+            chooser.exec_()
+
+            if chooser.choice == StartupDialog.BOOKYS:
+                self.show_bookys()
+            else:
+                # Default to EBoek (also covers the dialog being closed).
+                self.show_eboek()
 
             return True
 
@@ -124,6 +132,27 @@ class EBoekScraperApp(QApplication):
 
             return False
 
+    def show_eboek(self):
+        """Show the EBoek window, hiding the Bookys one if present."""
+        if self.main_window is None:
+            self.main_window = MainWindow()
+        if self.bookys_window is not None:
+            self.bookys_window.hide()
+        self.main_window.show()
+        self.main_window.raise_()
+        self.main_window.activateWindow()
+
+    def show_bookys(self):
+        """Show the Bookys window, hiding the EBoek one if present."""
+        from gui.bookys_window import BookysWindow
+        if self.bookys_window is None:
+            self.bookys_window = BookysWindow()
+        if self.main_window is not None:
+            self.main_window.hide()
+        self.bookys_window.show()
+        self.bookys_window.raise_()
+        self.bookys_window.activateWindow()
+
     def check_requirements(self):
         """Check system requirements and dependencies."""
         errors = []