fix(ci): compress rustdoc artifact to prevent upload stall

The VPS runner's limited bandwidth causes upload-artifact to stall when
uploading hundreds of MB of individual HTML files. Compress crate-docs
into a tar.gz before upload and extract on the publish side.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.github/workflows/docs.yml

@@ -102,12 +102,15 @@ jobs:
 
           inject_simple_analytics "$docs_dir" "$script_content"
       - run: echo "<meta http-equiv=refresh content=0;url=pezkuwi_sdk_docs/index.html>" > ./crate-docs/index.html
+      - name: Compress docs for upload
+        run: tar czf crate-docs.tar.gz -C . crate-docs/
       - uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
         with:
           name: ${{ github.sha }}-doc
-          path: ./crate-docs/
+          path: crate-docs.tar.gz
           retention-days: 1
           if-no-files-found: error
+          compression-level: 0
 
   build-implementers-guide:
     runs-on: ubuntu-latest
@@ -168,7 +171,13 @@ jobs:
         uses: actions/download-artifact@70fc10c6e5e1ce46ad2ea6f2b72d43f7d47b13c3 # v8.0.0
         with:
           name: ${{ github.sha }}-doc
-          path: ${{ github.head_ref || github.ref_name }}
+          path: /tmp/rustdocs
+      - name: Extract rustdocs
+        run: |
+          tar xzf /tmp/rustdocs/crate-docs.tar.gz -C .
+          mv crate-docs ${REF_NAME}
+        env:
+          REF_NAME: ${{ github.head_ref || github.ref_name }}
       - name: Download guide
         uses: actions/download-artifact@70fc10c6e5e1ce46ad2ea6f2b72d43f7d47b13c3 # v8.0.0
         with: