lenzu-prototypes (formerly HidekiAI/lenzu)

Important

Lenzu (the product) has moved to CodeMonkeyNinja/lenzu.

This repo is now an archive of the prototype crates that informed Lenzu's design. The shippable product — Rust GTK lens, Electron HUD, AppImage/.deb packaging, release pipeline — lives at the new home above.

What's here

prototypes/ contains experimental crates that explored various corners of the Lenzu problem space. Several fed insights into the production crate now at CodeMonkeyNinja/lenzu; many never went anywhere and remain only as historical record.

Notable prototypes (each has its own README.md under prototypes/<name>/):

• manga-ocr-test — manga-ocr-rs integration harness (now shipped as the manga-ocr-rs crate)
• dbnet-test, dbnet-ocr-pipeline — DBNet text-detection experiments
• sarashina-onnx-test, sarashina-vision-py — Sarashina LLM evaluation
• mecab-test — MeCab morphological analysis (now shipping as the mecab-furigana-rs crate)
• winit-test, gtk_gdk_test, gtk4_dialogbox_test, x11-gtk3-lens-test — windowing/compositor experiments (X11 vs Wayland, GTK3 vs GTK4)
• jp_ocr_app — early YOLO-based detector (superseded by DBNet)
• paddleocr-vl-manga, umi-ocr-eval — third-party OCR evaluations
• text-enrichment-test, kakasi-cli-test — text-processing experiments

Design docs & learnings

All technical design documents, investigation notes, and lessons learned from these prototypes live in the CodeMonkeyNinja/lenzu wiki. The docs there cross-reference prototype source code by GitHub link.

Per-prototype doc coverage:

Prototype	Relevant pages in lenzu wiki
jp_ocr_app	prototypes-desktop-issues — GTK4 migration, Cairo spinner fix, flash_alpha white-window fix, async capture
x11-gtk-lens-test	prototypes-desktop-issues — GTK4 migration, transparent draw fix, SCIM noise
x11-gtk3-lens-test	technical-design.phase4-predetect — ort version notes
gtk4_dialogbox_test	prototypes-desktop-issues — GTK4 migration decisions
gtk_gdk_test	prototypes-desktop-issues — GTK4 migration decisions
manga-ocr-test	technical-design.manga-ocr — full ONNX OCR tier design
dbnet-test	technical-design.phase4-predetect — DBNet algorithm, defaults, Cargo deps
dbnet-ocr-pipeline	scores, technical-design — benchmark results, architecture
sarashina-vision-py	technical-design.sarashina, model-evaluation — vision-3b CPU rejection
sarashina-onnx-test	prototypes-desktop-issues — workspace dependency graph
umi-ocr-eval	model-evaluation, session-log-2026-04-14 — eval results (0/3 pass)
paddleocr-vl-manga	session-log-2026-04-14 — eval results (2/3 pass)
winit-test	lenzu-desktop-issues — GTK replacement evaluation
text-enrichment-test	planning-ollama-to-llamacpp — Ollama health-check API notes

Shared infrastructure

A few directories outside prototypes/ survive in this archive because the prototypes depend on them:

• assets/ — test fixtures (Unit-test-{yokogaki,tategaki,tegaki}.png, ubunchu01_02.png, etc.) and demo media
• models/ — Apache 2.0 LICENSE/NOTICE for Sarashina models pulled on-demand by setup.sh
• scripts/ — setup.sh (model fetcher), test-ocr.sh, colab/

License

Rust prototype code: MIT (see LICENSE).

Individual prototypes may depend on third-party models or libraries with their own licenses — notably AGPL-3.0 for Ultralytics YOLO and StabRise DBNet ONNX models that several prototypes pulled at runtime. See each prototype's README.md for specifics.

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Active product home: CodeMonkeyNinja/lenzu