deploy: build the example docs with meta gen --generators docs-site (#4)

MetaObjects 1.1.0 removed `meta docs`. The example project now declares
docsSiteFile in its config, so the deploy runs `meta gen --generators docs-site`
and copies docs/generated/site into www/reference/example.

Author: dmealing

.github/workflows/deploy.yml

@@ -30,28 +30,30 @@ jobs:
         node-version: 22
 
     # Deploy-time reference-doc generation: clone the public wizardsofodd
-    # reference impl, run `meta docs` (published @metaobjectsdev/cli), and drop the
+    # reference impl, run `meta gen --generators docs-site` (published @metaobjectsdev/cli), and drop the
     # browsable site into www/reference/ so it publishes with the site. Regenerates
     # on every deploy (push to main / workflow_dispatch) — no cross-repo secrets.
     # --ignore-scripts skips wizardsofodd's wrangler postinstall (not needed for
-    # docs). --prompts data/templates surfaces the actual prompt TEXT.
-    # A REAL PROJECT documented by `meta docs` — not "the reference". It lives at
+    # docs). The clone's own metaobjects.config.ts declares docsSiteFile with
+    # prompts: "data/templates" (which surfaces the actual prompt TEXT) and a docs
+    # output target of ./docs/generated, so the site lands in docs/generated/site.
+    # A REAL PROJECT documented by `meta gen` — not "the reference". It lives at
     # /reference/example because a self-referential metamodel page cannot show that the
     # tool works on somebody's actual model, which is the only thing this demonstrates.
     # /reference itself is the metamodel, copied in the next step.
     #
     # The `rm` is narrowed to this subdirectory. It used to remove the whole of
     # www/reference, which — now that the metamodel lands there too — would delete the
     # reference and leave only the example behind, on every deploy.
-    - name: Generate the example project's docs (a real model, documented by meta docs)
+    - name: Generate the example project's docs (a real model, documented by meta gen)
       run: |
         git clone --depth 1 https://github.com/Draagon/wizardsofodd.git /tmp/woo
         cd /tmp/woo
         npm ci --ignore-scripts
-        npx meta docs . --site --prompts data/templates --out /tmp/woo-docs
+        npx meta gen --generators docs-site
         rm -rf "$GITHUB_WORKSPACE/www/reference/example"
         mkdir -p "$GITHUB_WORKSPACE/www/reference/example"
-        cp -r /tmp/woo-docs/site/* "$GITHUB_WORKSPACE/www/reference/example/"
+        cp -r /tmp/woo/docs/generated/site/* "$GITHUB_WORKSPACE/www/reference/example/"
 
     # Snippet injection: clone metaobjects at its latest npm RELEASE TAG — not main —
     # and inject its committed site-payload.json into this site's data-snippet