Feat braille and latex side by side and in sync

[jmankoff]

Fixes #11

[Copilot]

Pull request overview

This PR updates the web editor so the Braille pane is edited/stored as NABCC ASCII (instead of Unicode braille glyphs) to improve screen-reader braille display compatibility (per Issue #11), while keeping the Braille↔LaTeX panes side-by-side and synchronized. It also adds an OCR-based import path for photos of physical braille pages, including model-fetching/build plumbing and CI pinning for local file dependencies.

Changes:

• Switch Braille pane canonical/editable content to NABCC ASCII and add in-UI NVDA setup instructions.
• Add photo OCR upload path via a dedicated web worker (onnxruntime-web + brailleocr-web).
• Add build-time model fetching and update CI workflows to clone pinned upstream tags for local dependencies.

Reviewed changes

Copilot reviewed 16 out of 18 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
vite.config.js	Excludes onnxruntime-web from Vite pre-bundling to avoid dev-server wasm URL issues.
src/routes/+page.svelte	Updates Braille pane to NABCC ASCII, adds NVDA instructions, and adds file upload dispatch for BRF/BRL vs image OCR.
src/lib/sync.svelte.js	Removes Unicode-glyph display transform so sync operates directly on ASCII braille in the Braille pane.
src/lib/ocr/ocrWorker.js	Adds a dedicated worker that runs the OCR pipeline and returns Unicode braille text.
src/lib/ocr/ocrClient.js	Adds the main-thread worker wrapper and model URL resolution.
src/lib/ocr/imageDecode.js	Adds worker-side image decode into the tensor layout expected by the OCR pipeline.
scripts/fetch-models.mjs	Adds a build-time script to download ONNX models into static/models/.
pnpm-lock.yaml	Locks new deps (onnxruntime-web, local brailleocr-web) and transitive packages.
package.json	Adds deps and ensures dev/build fetch both liblouis assets and OCR models.
dataset.version	Pins the dataset tag used to fetch OCR model files.
brailleocr.version	Pins the brailleocr tag that CI clones for the local file dependency.
braille2latex.version	Pins the braille2latex tag that CI clones for the local file dependency.
.gitignore	Ignores generated static/models/ outputs.
.github/workflows/test.yml	Updates CI to clone pinned braille2latex and brailleocr tags.
.github/workflows/lint.yml	Updates CI to clone pinned braille2latex and brailleocr tags.
.github/workflows/deploy.yml	Updates deploy workflow to clone pinned deps before build.
.github/workflows/check-brailleocr-release.yml	Adds scheduled workflow to detect when brailleocr.version is behind upstream.
.github/workflows/check-braille2latex-release.yml	Adds scheduled workflow to detect when braille2latex.version is behind upstream.

Files not reviewed (1)

• pnpm-lock.yaml: Generated file

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