Added some functionality so we can modify the size of the playing video

offlineu_core.py

@@ -47,8 +47,14 @@ DEFAULT_SETTINGS = {
     'card_style': 'flat',         # 'flat' | 'elevated' | 'bordered'
     'corner_radius': 'rounded',   # 'sharp' | 'rounded' | 'pill'
     'library_path': '',           # '' = use COURSES_LIBRARY_PATH/--library-path default
+    'video_width': '',            # '' = responsive full-width; else last dragged size, in px
+    'video_height': '',
 }
 
+# Bounds for the persisted video player size, to reject garbage values
+# without capping how big/small someone can reasonably drag it.
+VIDEO_SIZE_BOUNDS = {'video_width': (200, 4000), 'video_height': (120, 3000)}
+
 # Allowed values for every setting except accent_color (validated separately
 # as a hex string). Anything outside these sets is rejected/ignored on save.
 SETTINGS_CHOICES = {
@@ -91,6 +97,9 @@ def load_settings() -> Dict[str, Any]:
                     # Lenient on load (directory may be transiently
                     # unavailable at startup) - only validated on save.
                     settings[key] = value
+                elif key in VIDEO_SIZE_BOUNDS:
+                    if value == '' or (isinstance(value, int) and not isinstance(value, bool)):
+                        settings[key] = value
                 elif key in SETTINGS_CHOICES and value in SETTINGS_CHOICES[key]:
                     settings[key] = value
     except (json.JSONDecodeError, OSError) as e:
@@ -109,6 +118,18 @@ def save_settings(new_settings: Dict[str, Any]) -> Dict[str, Any]:
             if value and not os.path.isdir(value):
                 raise ValueError(f"Directory not found: {value}")
             current[key] = value
+        elif key in VIDEO_SIZE_BOUNDS:
+            if value in (None, ''):
+                current[key] = ''
+                continue
+            try:
+                num = int(value)
+            except (TypeError, ValueError):
+                raise ValueError(f"{key} must be a number")
+            lo, hi = VIDEO_SIZE_BOUNDS[key]
+            if not (lo <= num <= hi):
+                raise ValueError(f"{key} must be between {lo} and {hi}")
+            current[key] = num
         elif key in SETTINGS_CHOICES and value in SETTINGS_CHOICES[key]:
             current[key] = value
     os.makedirs(DATA_DIR, exist_ok=True)