Tweak CS2 fetch defaults

Use a downward arrow icon for Fetch Images and default downloads to the project's images directory, updating subtool buttons and docs accordingly.

app/tools/cs2_patterns.py

@@ -16,6 +16,8 @@ import requests
 from PIL import Image, ImageTk
 from urllib.parse import urlparse
 
+from app.logic import IMAGES_DIR
+
 
 class CS2PatternFetcher:
     """Fetch CS2 skin metadata and download pattern images."""
@@ -191,9 +193,7 @@ class CS2PatternTool(tk.Toplevel):
 
         self.weapons_var = tk.StringVar()
         self.patterns_var = tk.StringVar()
-        self.directory_var = tk.StringVar(
-            value=str((Path.cwd() / "images" / "cs2").resolve())
-        )
+        self.directory_var = tk.StringVar(value=str(IMAGES_DIR.resolve()))
         self.status_var = tk.StringVar(value=self._t("cs2.status_loading"))
 
         self._init_widgets()
@@ -460,7 +460,7 @@ class CS2PatternTool(tk.Toplevel):
     def _toolbar_button_defs(self) -> list[tuple[str, str, Any]]:
         return [
             ("🔄", self._t("cs2.refresh_button"), self._refresh_data),
-            ("⬇", self._t("cs2.download_button"), self._download_selected),
+            ("⭳", self._t("cs2.download_button"), self._download_selected),
             ("📁", self._t("cs2.browse_button"), self._browse_directory),
         ]