feat: add native Android app wrapper using Capacitor and update docs

docs: update all documentation to reflect final 3-pipeline architecture and gpt-4o high-res upscaling

refactor: remove Pipeline D (Finetuned YOLO) to massively improve inference latency and simplify architecture to 3 pipelines

docs: add UI screenshots for hackathon submission

fix: clean all non-ASCII chars, fix CI (lint + tests), secure API keys

chore: organize markdown files - move docs to docs/ directory

docs: add live demo status

chore: verify Docker and update project checklist

feat: scaffold BrailleVision app