fix: correct history.jsonl path for Allure 3 trend charts (#7974)

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

@@ -131,13 +131,14 @@ jobs:
             fi
           done
 
-          # Restore unified dashboard history for trend charts (or seed empty file)
+          # Restore unified dashboard history for trend charts.
+          # historyPath in allurerc.mjs resolves relative to process.cwd(), not --cwd,
+          # so the file must be at $GITHUB_WORKSPACE/history.jsonl.
           if git show "gh-pages:allure/history.jsonl" 2>/dev/null; then
-            git show "gh-pages:allure/history.jsonl" > unified-workspace/history.jsonl
+            git show "gh-pages:allure/history.jsonl" > "${GITHUB_WORKSPACE}/history.jsonl"
             echo "Restored unified dashboard history from gh-pages"
           else
-            echo "No previous unified dashboard history found"
-            touch unified-workspace/history.jsonl
+            echo "No previous unified dashboard history found — Allure 3 will create it"
           fi
 
           # Generate unified dashboard using allurerc.mjs
@@ -179,9 +180,9 @@ jobs:
           # Deploy unified dashboard (per-workflow tabs generated by allurerc.mjs plugins)
           mkdir -p allure
           cp -r "${GITHUB_WORKSPACE}/allure-all-report/"* allure/
-          # Persist history.jsonl for trend charts
-          if [ -f "${GITHUB_WORKSPACE}/unified-workspace/history.jsonl" ]; then
-            cp "${GITHUB_WORKSPACE}/unified-workspace/history.jsonl" allure/history.jsonl
+          # Persist history.jsonl for trend charts (written by Allure 3 at process.cwd())
+          if [ -f "${GITHUB_WORKSPACE}/history.jsonl" ]; then
+            cp "${GITHUB_WORKSPACE}/history.jsonl" allure/history.jsonl
           fi
 
           # Commit and push