ci(#11194): introduce CI failure analysis script

.github/workflows/find-test-failures.yml

@@ -0,0 +1,66 @@
+name: Find test failures
+
+on:
+  workflow_dispatch:
+    inputs:
+      search_term:
+        description: 'Substring or /regex/ matched against the failing test title and spec-file path'
+        type: string
+        required: true
+      job:
+        description: 'Only scan jobs whose name matches (substring or /regex/), e.g. lowLevel or sentinel or core'
+        type: string
+        default: ''
+      branch:
+        description: 'Only scan runs on this branch (empty = all branches)'
+        type: string
+        default: ''
+      since:
+        description: 'Only runs created on/after this date (YYYY-MM-DD)'
+        type: string
+        default: ''
+      limit:
+        description: 'Max number of runs to scan'
+        type: string
+        default: '100'
+      scan_all:
+        description: 'Also scan green runs / passing jobs (catches flaky-recovered failures)'
+        type: boolean
+        default: false
+
+permissions:
+  contents: read
+  actions: read
+
+jobs:
+  find_test_failures:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+        with:
+          persist-credentials: false
+      - name: Use Node 24
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e  # v6.4.0 # zizmor: ignore[cache-poisoning]
+        with:
+          node-version: 24
+      - name: Run failure scanner
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          SEARCH_TERM: ${{ github.event.inputs.search_term }}
+          JOB: ${{ github.event.inputs.job }}
+          BRANCH: ${{ github.event.inputs.branch }}
+          SINCE: ${{ github.event.inputs.since }}
+          LIMIT: ${{ github.event.inputs.limit }}
+          SCAN_ALL: ${{ github.event.inputs.scan_all }}
+        run: |
+          args=("$SEARCH_TERM" --repo "$GITHUB_REPOSITORY" --limit "$LIMIT")
+          [ -n "$JOB" ] && args+=(--job "$JOB")
+          [ -n "$BRANCH" ] && args+=(--branch "$BRANCH")
+          [ -n "$SINCE" ] && args+=(--since "$SINCE")
+          [ "$SCAN_ALL" = "true" ] && args+=(--scan-all)
+          {
+            echo '```'
+            node scripts/ci/find-test-failures.js "${args[@]}"
+            echo '```'
+          } | tee -a "$GITHUB_STEP_SUMMARY"