Make image crop target size configurable

app/__init__.py

@@ -20,6 +20,24 @@ def create_app():
     app.config.setdefault("SQLALCHEMY_TRACK_MODIFICATIONS", False)
     app.config.setdefault("UPLOAD_FOLDER", os.path.join(app.root_path, "static", "uploads"))
 
+    # Target output resolution for cropped images.
+    # This is used by the client-side cropper (to generate an upload) and by the server-side
+    # image processing (to cap the resulting WEBP size).
+    #
+    # Defaults to Full HD landscape (1920x1080). Portrait is derived by swapping.
+    # Override via env vars, e.g.:
+    #   IMAGE_CROP_TARGET_W=1920
+    #   IMAGE_CROP_TARGET_H=1080
+    def _env_int(name: str, default: int) -> int:
+        try:
+            v = int(os.environ.get(name, "") or default)
+        except (TypeError, ValueError):
+            v = default
+        return max(1, v)
+
+    app.config.setdefault("IMAGE_CROP_TARGET_W", _env_int("IMAGE_CROP_TARGET_W", 1920))
+    app.config.setdefault("IMAGE_CROP_TARGET_H", _env_int("IMAGE_CROP_TARGET_H", 1080))
+
     # NOTE: Videos should be max 250MB.
     # Flask's MAX_CONTENT_LENGTH applies to the full request payload (multipart includes overhead).
     # We set this slightly above 250MB to allow for multipart/form fields overhead, while still