fix(build): cpu torch + optimum 1.20.0 to fix hard dep conflicts

fix(build): upgrade pip + pin sentencepiece to fix ResolutionImpossible

fix(build): split optimum+onnxruntime, pin onnxruntime==1.17.3, add pip timeout

fix(docker): use python:3.10-slim — paddlepaddle has no Python 3.11 wheel

fix(spaces/Dockerfile): copy schema.py + matcher.py + drugs_cache.json

fix(ocr-space): cache dir permission + diagnostic error reporting

fix(ocr): complete backend overhaul + vision fallback

feat: initial commit — PharMinds Algeria AI pharmacy platform