fix(space): use Gradio SDK in root README — stop docker http.server directory listing

README.md

@@ -1,10 +1,25 @@
 ---
-title: Arty Train Cnnrnn
-emoji: 🐨
-colorFrom: pink
-colorTo: purple
-sdk: docker
+title: Artydemo
+emoji: 🦀
+colorFrom: purple
+colorTo: gray
+sdk: gradio
+sdk_version: "5.0.0"
+python_version: "3.11"
+app_file: gradio/app.py
 pinned: false
 ---
 
-Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference
+# Arty
+
+WikiArt **genre / style / artist** classifiers (CNN baseline and CNN-RNN). This Hugging Face **Space** runs the **Gradio** app under [`gradio/app.py`](gradio/app.py); weights load from Hub model repos and architecture from [`src/model.py`](src/model.py).
+
+**Training** (Docker GPU job) lives in [`Dockerfile`](Dockerfile) — use a **separate** Space pointed at the same repo if you only want training, or run locally. Do not set `sdk: docker` on this Space if you want the Gradio UI.
+
+## Env (optional)
+
+- `BASELINE_MODEL_REPO_ID` — default `pdjota/cnn-baseline`
+- `CNNRNN_MODEL_REPO_ID` — default `pdjota/arty-cnn-rnn`
+- `HF_TOKEN` — if model repos are gated
+
+More detail: [`gradio/README.md`](gradio/README.md), [`docs/monorepo_gradio_space.md`](docs/monorepo_gradio_space.md).

docs/README_HF_training_docker.md

@@ -0,0 +1,16 @@
+---
+title: Arty Train CNN-RNN
+emoji: 🐨
+colorFrom: pink
+colorTo: purple
+sdk: docker
+pinned: false
+---
+
+# HF training Space (Docker)
+
+Use this README as the **Space README** only for a **dedicated training Space** (e.g. `pdjota/arty-train-cnnrnn`), not for the Gradio demo Space.
+
+The repo [`Dockerfile`](../Dockerfile) runs dataset materialization, training, and model upload. See comments in that file for environment variables.
+
+The **Gradio demo** Space should use **`sdk: gradio`** in the **root** [`README.md`](../README.md), not Docker.

gradio/README.md

@@ -1,19 +1,8 @@
----
-title: Artydemo
-emoji: 🦀
-colorFrom: purple
-colorTo: gray
-sdk: gradio
-sdk_version: "5.0.0"
-python_version: "3.11"
-app_file: gradio/app.py
-pinned: false
----
-
 # Arty Gradio demo (monorepo)
 
-- Set **`app_file`** to **`gradio/app.py`** (see YAML above).
-- The build must include **`src/model.py`** (architecture) while **weights** load from Hub model repos.
+Hugging Face reads **Space SDK settings from the repo root** [`README.md`](../README.md) (`sdk: gradio`, `app_file: gradio/app.py`). If the root README used `sdk: docker`, the Space would **not** run this app.
+
+The build must include **`src/model.py`** (architecture) while **weights** load from Hub model repos.
 
 ## Local run
 
@@ -33,7 +22,7 @@ python app.py
 ## Hugging Face Space checklist
 
 1. Space **linked repo** = your Arty **monorepo** (GitHub or HF Git).
-2. **Root** `requirements.txt` is optional; if missing, Space uses **`gradio/requirements.txt`** when the app is under `gradio/` (or add a root `requirements.txt` that `-r gradio/requirements.txt`).
+2. **Root** [`requirements.txt`](../requirements.txt) must include Gradio deps (this repo adds `gradio` there for the Space build).
 3. Migrate off the old Space submodule: use **one repo** + `app_file: gradio/app.py`.
 
 See also **[docs/gradio_space_fix_options.md](../docs/gradio_space_fix_options.md)**.

requirements.txt

@@ -8,6 +8,9 @@ pandas>=2.0
 scikit-learn>=1.2
 matplotlib>=3.7
 tqdm>=4.65
-huggingface_hub>=0.20 # model upload + Gradio Spaces (Phase 2)
+huggingface_hub>=0.25.0,<1.0  # Gradio 5.x needs HfFolder; removed in hub 1.0
 pytest>=7.0          # tests
 pytest-cov>=4.0      # coverage
+
+# Gradio demo (HF Space uses root requirements.txt)
+gradio>=5.0,<6