fix: flatten imported dashboard results for Allure 3 scanner (#7963)

Signed-off-by: Dmitry Tokarev <dtokarev@nvidia.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/workflows/generate-allure-report.yml

@@ -94,15 +94,6 @@ jobs:
         run: |
           git fetch origin gh-pages:gh-pages 2>/dev/null || echo "No gh-pages branch yet"
 
-          # Restore history for Allure 3 report (primary, at allure/${SUBDIR}/)
-          # Allure 3 uses history.jsonl (not history/*.json like Allure 2)
-          if git show "gh-pages:allure/${SUBDIR}/history.jsonl" 2>/dev/null; then
-            git show "gh-pages:allure/${SUBDIR}/history.jsonl" > allure-v3-history.jsonl
-            echo "Restored Allure 3 history.jsonl from gh-pages/allure/${SUBDIR}"
-          else
-            echo "No previous Allure 3 history found"
-          fi
-
           # Restore history for Allure 2 report (at allure/v2/${SUBDIR}/)
           if git show "gh-pages:allure/v2/${SUBDIR}/history" 2>/dev/null; then
             mkdir -p allure-results/history
@@ -119,20 +110,6 @@ jobs:
         run: |
           ./allure2-cli/bin/allure generate allure-results -o allure-report --clean
 
-      - name: Generate Allure 3 Report
-        if: steps.check-results.outputs.has_results == 'true'
-        run: |
-          mkdir -p allure-v3-workspace/allure-results
-          # Copy results but exclude Allure 2 history dir to avoid format confusion
-          rsync -a --exclude='history' allure-results/ allure-v3-workspace/allure-results/
-          # Restore Allure 3 history.jsonl into the workspace
-          if [ -f allure-v3-history.jsonl ]; then
-            cp allure-v3-history.jsonl allure-v3-workspace/history.jsonl
-          fi
-          # historyPath requires a config file
-          echo 'export default { historyPath: "./history.jsonl" };' > allure-v3-workspace/allurerc.mjs
-          npx allure generate --config="${GITHUB_WORKSPACE}/allure-v3-workspace/allurerc.mjs" --cwd allure-v3-workspace -o allure-report-v3
-
       - name: Generate unified dashboard
         if: steps.check-results.outputs.has_results == 'true'
         env:
@@ -149,18 +126,18 @@ jobs:
           for dir in pr post-merge nightly release; do
             if [ "$dir" = "$SUBDIR" ]; then continue; fi
             if git show "gh-pages:dashboard-results/${dir}" 2>/dev/null; then
-              mkdir -p "unified-workspace/allure-results/${dir}-imported"
               git archive gh-pages "dashboard-results/${dir}" | tar -x -C /tmp/
-              cp -r "/tmp/dashboard-results/${dir}/"* "unified-workspace/allure-results/${dir}-imported/" 2>/dev/null || true
+              cp -r "/tmp/dashboard-results/${dir}/"* "unified-workspace/allure-results/" 2>/dev/null || true
             fi
           done
 
-          # Restore unified dashboard history for trend charts
+          # Restore unified dashboard history for trend charts (or seed empty file)
           if git show "gh-pages:allure/history.jsonl" 2>/dev/null; then
             git show "gh-pages:allure/history.jsonl" > unified-workspace/history.jsonl
             echo "Restored unified dashboard history from gh-pages"
           else
             echo "No previous unified dashboard history found"
+            touch unified-workspace/history.jsonl
           fi
 
           # Generate unified dashboard using allurerc.mjs
@@ -189,23 +166,6 @@ jobs:
             git checkout --orphan gh-pages
           fi
 
-          # One-time cleanup: remove old path layout from before allure/ prefix migration
-          for old_dir in allure-all pre-merge pre-merge-v2 post-merge post-merge-v2 nightly nightly-v2 release release-v2; do
-            if [ -d "$old_dir" ]; then
-              echo "Removing legacy directory: $old_dir"
-              rm -rf "$old_dir"
-            fi
-          done
-
-          # Deploy Allure 3 report (primary)
-          mkdir -p "allure/${SUBDIR}"
-          rm -rf "allure/${SUBDIR}/"*
-          cp -r "${GITHUB_WORKSPACE}/allure-report-v3/"* "allure/${SUBDIR}/"
-          # Persist Allure 3 history.jsonl for trend charts
-          if [ -f "${GITHUB_WORKSPACE}/allure-v3-workspace/history.jsonl" ]; then
-            cp "${GITHUB_WORKSPACE}/allure-v3-workspace/history.jsonl" "allure/${SUBDIR}/history.jsonl"
-          fi
-
           # Deploy Allure 2 report
           mkdir -p "allure/v2/${SUBDIR}"
           rm -rf "allure/v2/${SUBDIR}/"*
@@ -216,7 +176,7 @@ jobs:
           rm -rf "dashboard-results/${SUBDIR}/"*
           rsync -a --exclude='history' "${GITHUB_WORKSPACE}/allure-results/" "dashboard-results/${SUBDIR}/"
 
-          # Deploy unified dashboard (overwrites report files, preserves subdirs)
+          # Deploy unified dashboard (per-workflow tabs generated by allurerc.mjs plugins)
           mkdir -p allure
           cp -r "${GITHUB_WORKSPACE}/allure-all-report/"* allure/
           # Persist history.jsonl for trend charts
@@ -248,6 +208,5 @@ jobs:
         run: |
           echo "## Allure Reports" >> $GITHUB_STEP_SUMMARY
           echo "" >> $GITHUB_STEP_SUMMARY
-          echo "- [Allure Report](https://ai-dynamo.github.io/dynamo/allure/${SUBDIR}/)" >> $GITHUB_STEP_SUMMARY
+          echo "- [Allure Dashboard](https://ai-dynamo.github.io/dynamo/allure/)" >> $GITHUB_STEP_SUMMARY
           echo "- [Allure 2 Report](https://ai-dynamo.github.io/dynamo/allure/v2/${SUBDIR}/)" >> $GITHUB_STEP_SUMMARY
-          echo "- [Unified Dashboard](https://ai-dynamo.github.io/dynamo/allure/)" >> $GITHUB_STEP_SUMMARY