Toten Code entfernen

Ungenutzte Hilfsfunktion, ungenutzter Konfigurationswert und drei
CSS-Regeln ohne Verwendung im Markup.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

app/imaging.py

@@ -79,13 +79,3 @@ def encode_jpeg(rgb_or_bgr: np.ndarray, quality: int = 88, bgr: bool = True) ->
     Image.fromarray(array).save(buffer, format="JPEG", quality=quality, optimize=True)
     return buffer.getvalue()
 
-
-def fit_within(image: np.ndarray, max_edge: int) -> np.ndarray:
-    height, width = image.shape[:2]
-    longest = max(height, width)
-    if longest <= max_edge:
-        return image
-    scale = max_edge / longest
-    pil = Image.fromarray(image[:, :, ::-1])
-    pil = pil.resize((round(width * scale), round(height * scale)), Image.LANCZOS)
-    return np.asarray(pil)[:, :, ::-1].copy()