Update requirements.txt

requirements.txt

@@ -34,3 +34,10 @@ tabulate>=0.9.0             # fallback Markdown table renderer
 # YouTube transcript fetcher
 # ───────────────────────────────
 youtube-transcript-api>=0.6.2
+
+# OCR & imaging
+pytesseract>=0.3.10       # Python wrapper
+Pillow>=10.3.0            # Imaging library (PIL fork)
+# NOTE: system package 'tesseract-ocr' must also be present on the HF runner
+
+