docs: rewrite Space README + About tab as declarative current state

- README.md: drop the (private; was michaelr27/...) history aside,
drop the broken pointer to legacy/ (the directory was emptied
during the NIST scrub), tighten the status sentence.
- app.py ABOUT_MD: rewrite as a clean four-bullet "what this is"
rather than a "status: active development" disclaimer block. Drops
the broken pointer to space-setup/ (those notes are local-only and
not in any public repo). Datasets bullet now describes both repos
(inputs at HF_DATA_REPO, results at HF_SUBMISSIONS_REPO) with
proper Hub links rather than just the repo names.

README.md

@@ -15,11 +15,8 @@ A benchmark for AI-driven CAD generation: how well can a model turn a
 textual or visual description of a mechanical part into a valid,
 geometrically correct 3D model?
 
-**Status:** in active development under
-`HuggingAI4Engineering/cadgenbench-leaderboard` (private; was
-`michaelr27/AI4Engineering` until the org transfer). Will flip to public
-once the eval handler is wired up and the GT dataset is in place.
+In active development under
+`HuggingAI4Engineering/cadgenbench-leaderboard`; will flip to public
+once the eval handler is wired up and the real dataset is in place.
 Reference shape inspired by
 [`adyen/DABstep`](https://huggingface.co/spaces/adyen/DABstep).
-
-The previous static-prototype HTML artifacts live in [`legacy/`](legacy/).

app.py

@@ -126,18 +126,14 @@ ABOUT_MD = f"""## About
 turn a description of a mechanical part into a valid, geometrically
 correct 3D model.
 
-- Reference baseline: an iterative AI agent that writes build123d Python.
-- Submission flow: upload a zip of per-fixture STEP files; the Space runs
-  the CPU eval and appends a row to the submissions dataset.
-- Datasets: fixtures (inputs + ground truth) live in `{HF_DATA_REPO}`;
-  submissions and computed results live in `{HF_SUBMISSIONS_REPO}`.
-
-### Status
-
-This Space is in **active development** under
-`{HF_ORG}/cadgenbench-leaderboard` (private). It will flip to public once
-the eval handler is wired up and the GT dataset is in place. See
-`space-setup/` in the source tree for the full build plan.
+- **Reference baseline**: an iterative AI agent that writes build123d Python.
+- **Submission flow**: upload a zip of per-fixture STEP files; the Space
+  runs the eval and appends a row to the submissions dataset.
+- **Datasets**: fixture inputs in
+  [`{HF_DATA_REPO}`](https://huggingface.co/datasets/{HF_DATA_REPO});
+  submissions and computed results in
+  [`{HF_SUBMISSIONS_REPO}`](https://huggingface.co/datasets/{HF_SUBMISSIONS_REPO}).
+- **Code**: [`huggingface/cadgenbench`](https://github.com/huggingface/cadgenbench).
 """
 
 with gr.Blocks(title="CADGenBench Leaderboard") as app: