ci: raise agent audit turn limit and preserve logs

The Friday test-health audit hit the 30-turn cap on its first-ever run
(2026-04-24) and the agent log was discarded with the self-hosted
runner. Heavier recipes need more room, and the next failure should be
diagnosable.

- Raise --max-turns from 30 to 50
- Switch --output-format from text to stream-json so events are emitted
  during the run instead of only at process exit; prefix with
  stdbuf -oL -eL to line-buffer the pipe
- Upload /tmp/claude-audit-log.txt and /tmp/audit-<suite>.md as an
  artifact (if: always(), 14-day retention) using the upload-artifact
  SHA already pinned in build-notebooks.yml

Signed-off-by: Andre Manoel <amanoel@nvidia.com>

Author: andreatgretel

.github/workflows/agentic-ci-daily.yml

@@ -174,11 +174,11 @@ jobs:
             | sed "s|{{date}}|$(date -u +%Y-%m-%d)|g" \
             | sed "s|{{memory_path}}|.agentic-ci-state|g")
 
-          claude \
+          stdbuf -oL -eL claude \
             --model "$AGENTIC_CI_MODEL" \
             -p "$PROMPT" \
-            --max-turns 30 \
-            --output-format text \
+            --max-turns 50 \
+            --output-format stream-json \
             --verbose \
             2>&1 | tee /tmp/claude-audit-log.txt
 
@@ -205,6 +205,17 @@ jobs:
               json.dump(state, f, indent=2)
           "
 
+      - name: Upload agent log
+        if: always()
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: claude-audit-log-${{ matrix.suite }}-${{ github.run_id }}
+          path: |
+            /tmp/claude-audit-log.txt
+            /tmp/audit-${{ matrix.suite }}.md
+          retention-days: 14
+          if-no-files-found: ignore
+
       - name: Write job summary
         if: always()
         env: