docs: make data PR prompt self-contained

README.md

@@ -201,14 +201,28 @@ electronmicroscopy/quantem.widget.
 1. Confirm `hf auth whoami` prints a username. If it fails, stop and ask me
    to create a Write token and run `hf auth login`, or export `HF_TOKEN`.
    Do not run an interactive login yourself or write the token into a repo.
-2. Copy `templates/meta.json`. Fill its required fields from the files and
-   the permission lines above. Read shape and dtype from the array or EMD.
-   Omit optional values when unknown; do not invent them. Do not put a local
-   filesystem path or credential in `meta.json`.
-3. Download `check_meta/` and `templates/meta.json` as described above. Run
-   `python -m check_meta <folder>`. Stop unless it prints `ok`.
-4. Upload with `hf upload ... --repo-type dataset --create-pr`, using the
-   target path above and a concise commit message.
+2. Download the checker and template, then copy the template into the folder:
+
+   hf download bobleesj/quantem-data --repo-type dataset \
+     --include "check_meta/**" --include "templates/meta.json" \
+     --local-dir ./quantem-data-tools
+   cp ./quantem-data-tools/templates/meta.json <folder>/meta.json
+
+3. Fill every required field in `<folder>/meta.json` from the files and the
+   permission lines above. Read shape and dtype from the array or EMD. Omit
+   optional values when unknown; do not invent them. Do not put a local path
+   or credential in `meta.json`. Validate it:
+
+   export PYTHONPATH="$PWD/quantem-data-tools${PYTHONPATH:+:$PYTHONPATH}"
+   python -m check_meta <folder>
+
+   Stop unless validation prints `ok`.
+4. Open the Community pull request:
+
+   hf upload bobleesj/quantem-data <folder> \
+     widget-tutorials/<widget-or-shared>/<name>/<size>/ \
+     --repo-type dataset --create-pr \
+     --commit-message "add <widget> <name> <size> tutorial data"
 5. Give me the Community URL. Do not merge. Open a GitHub PR only if a named
    loader is also needed in `quantem.widget.datasets`; that PR waits until
    this Hugging Face PR merges. A new widget is discuss-first.