fix(ci): publish benchmark delta reports

.github/scripts/run-benchmarks.sh

@@ -292,14 +292,16 @@ if not memory_rows:
     sys.exit(1)
 
 if not dictionary_rows:
-    print("WARN: No REPORT_DICT lines parsed; dictionary section will be empty.", file=sys.stderr)
+    print(
+        "WARN: No REPORT_DICT lines parsed; dictionary section has no data rows; writing _n/a_ placeholder.",
+        file=sys.stderr,
+    )
 
 if not dictionary_training_rows:
     print(
-        "ERROR: No REPORT_DICT_TRAIN lines parsed; dictionary training section would be empty.",
+        "WARN: No REPORT_DICT_TRAIN lines parsed; dictionary training section has no data rows; writing _n/a_ placeholder.",
         file=sys.stderr,
     )
-    sys.exit(1)
 
 with open("benchmark-results.json", "w") as f:
     json.dump(benchmark_results, f, indent=2)
@@ -482,6 +484,8 @@ for row in sorted(dictionary_rows, key=lambda item: (item["scenario"], item["lev
     lines.append(
         f'| {row["scenario"]} | {label} | {row["level"]} | {row["dict_bytes"]} | {row["train_ms"]:.3f} | {row["ffi_no_dict_bytes"]} | {row["ffi_with_dict_bytes"]} | {row["ffi_no_dict_ratio"]:.4f} | {row["ffi_with_dict_ratio"]:.4f} |'
     )
+if not dictionary_rows:
+    lines.append("| _n/a_ | _no dictionary rows emitted in this run_ | - | - | - | - | - | - | - |")
 
 lines.extend([
     "",
@@ -498,6 +502,8 @@ for row in sorted(dictionary_training_rows, key=lambda item: item["scenario"]):
     lines.append(
         f'| {row["scenario"]} | {label} | {row["dict_bytes_requested"]} | {row["rust_train_ms"]:.3f} | {row["ffi_train_ms"]:.3f} | {row["rust_dict_bytes"]} | {row["ffi_dict_bytes"]} | {row["rust_fastcover_score"]} | {delta_cell} | {row["status"]} |'
     )
+if not dictionary_training_rows:
+    lines.append("| _n/a_ | _no dictionary training rows emitted in this run_ | - | - | - | - | - | - | - | - |")
 
 lines.extend([
     "",

.github/workflows/ci.yml

@@ -158,3 +158,25 @@ jobs:
           fail-on-alert: ${{ github.event_name == 'pull_request' }}
           save-data-file: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
           benchmark-data-dir-path: dev/bench
+
+      - name: Checkout gh-pages
+        if: steps.bot-token.outputs.token != '' && github.event_name == 'push' && github.ref == 'refs/heads/main'
+        uses: actions/checkout@v6
+        with:
+          ref: gh-pages
+          token: ${{ steps.bot-token.outputs.token }}
+          path: gh-pages
+
+      - name: Publish benchmark reports to gh-pages
+        if: steps.bot-token.outputs.token != '' && github.event_name == 'push' && github.ref == 'refs/heads/main'
+        run: |
+          mkdir -p gh-pages/dev/bench
+          cp benchmark-report.md gh-pages/dev/bench/benchmark-report.md
+          cp benchmark-delta.json gh-pages/dev/bench/benchmark-delta.json
+          cp benchmark-delta.md gh-pages/dev/bench/benchmark-delta.md
+          cd gh-pages
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git add dev/bench/benchmark-report.md dev/bench/benchmark-delta.json dev/bench/benchmark-delta.md
+          git diff --cached --quiet || git commit -m "chore(bench): publish benchmark reports"
+          git push origin gh-pages

README.md

@@ -12,6 +12,8 @@ Pure Rust zstd implementation — managed fork of [ruzstd](https://github.com/Ki
 Historical benchmark charts are published to GitHub Pages:
 
 - [Performance dashboard](https://structured-world.github.io/structured-zstd/dev/bench/)
+- [Latest benchmark delta report](https://structured-world.github.io/structured-zstd/dev/bench/benchmark-delta.md)
+- [Latest full benchmark report](https://structured-world.github.io/structured-zstd/dev/bench/benchmark-report.md)
 
 Note: the root Pages URL can be empty; benchmark charts live under `/dev/bench/`.