Update app.py

1. Pad small header/footer crops instead of skipping
2. Asyncio patch moved to the top

app.py

@@ -2,6 +2,19 @@
 GLM-OCR Hugging Face Space app with client-side header/footer fallback for MaaS.
 Works for every PDF and every image: uses API bboxes when available, else minimal band.
 """
+# Patch asyncio first (before Gradio imports it) to suppress Python 3.13 cleanup noise
+import asyncio
+try:
+    _orig_close = asyncio.BaseEventLoop.close
+    def _safe_close(self):
+        try:
+            _orig_close(self)
+        except (ValueError, OSError):
+            pass
+    asyncio.BaseEventLoop.close = _safe_close
+except Exception:
+    pass
+
 import logging
 import os
 import re
@@ -21,19 +34,6 @@ logging.basicConfig(
 )
 log = logging.getLogger("glmocr_app")
 
-# Suppress Python 3.13 asyncio cleanup noise (Invalid file descriptor in BaseEventLoop.__del__)
-try:
-    import asyncio
-    _orig_close = asyncio.BaseEventLoop.close
-    def _safe_close(self):
-        try:
-            _orig_close(self)
-        except (ValueError, OSError):
-            pass
-    asyncio.BaseEventLoop.close = _safe_close
-except Exception:
-    pass
-
 GLMOCR_BASE = os.path.dirname(glmocr.__file__)
 CONFIG_PATH = os.path.join(GLMOCR_BASE, "config.yaml")
 FORMATTER_PATH = os.path.join(GLMOCR_BASE, "postprocess", "result_formatter.py")
@@ -149,7 +149,7 @@ def extract_zone_text_pdf(pdf_path, page_num, y_start_frac, y_end_frac):
 
 
 def ocr_zone(image_path, y_start_frac, y_end_frac):
-    """Run OCR on a horizontal band of the image. Skips MaaS if crop is too small (API returns 400)."""
+    """Run OCR on a horizontal band. Pads small crops to meet API minimum size instead of skipping."""
     zone_name = "header" if y_end_frac < 0.5 else "footer"
     try:
         from PIL import Image
@@ -162,13 +162,20 @@ def ocr_zone(image_path, y_start_frac, y_end_frac):
             return ""
         crop = img.crop((0, y0, w, y1))
         cw, ch = crop.size
-        pixels = cw * ch
-        if ch < MIN_CROP_HEIGHT or pixels < MIN_CROP_PIXELS:
-            log.info(
-                "[%s] ocr_zone: skip (crop too small: %dx%d=%d pixels, need height>=%d and pixels>=%d)",
-                zone_name, cw, ch, pixels, MIN_CROP_HEIGHT, MIN_CROP_PIXELS,
-            )
-            return ""
+        # Pad to minimum size so MaaS accepts the image (avoids 400 on tiny strips)
+        if ch < MIN_CROP_HEIGHT or (cw * ch) < MIN_CROP_PIXELS:
+            need_h = max(ch, MIN_CROP_HEIGHT)
+            need_w = max(cw, 1)
+            if (need_w * need_h) < MIN_CROP_PIXELS:
+                need_w = max(need_w, (MIN_CROP_PIXELS + need_h - 1) // need_h)
+            canvas = Image.new("RGB", (need_w, need_h), (255, 255, 255))
+            if zone_name == "header":
+                canvas.paste(crop, (0, 0))  # crop at top
+            else:
+                canvas.paste(crop, (0, need_h - ch))  # crop at bottom
+            crop = canvas
+            cw, ch = crop.size
+            log.info("[%s] ocr_zone: padded to %dx%d for API", zone_name, cw, ch)
         fd, path = tempfile.mkstemp(suffix=".jpg")
         os.close(fd)
         try: