ci(scorecard): cure the 20/20 startup death and emit SARIF (#168)

.github/workflows/scorecard.yml

@@ -1,22 +1,40 @@
 # This workflow is managed by gh actions-lock.
 # SPDX-License-Identifier: MPL-2.0
-# This workflow is managed by gh actions-lock.
-# This workflow is managed by gh actions-lock.
+# Thin wrapper around hyperpolymath/standards scorecard-reusable.yml, in the
+# shape of the standards caller (standards/.github/workflows/scorecard.yml).
+# Deliberate differences from that caller: the cross-repo SHA pin, this repo's
+# existing weekly cron, and the branch_protection_rule trigger. See #168.
+
 name: Scorecards supply-chain security
 
 on:
+  push:
+    branches: [main]
+  pull_request:
   branch_protection_rule:
   schedule:
     - cron: '23 4 * * 1'
+  workflow_dispatch:
+
+# Estate guardrail: cancel superseded runs so re-pushes don't pile up.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 
-permissions: read-all
+# A job-level `permissions:` block REPLACES the workflow-level map, so the
+# calling job below must itself grant every scope the callee's jobs request:
+# actions: read (Scorecard's Packaging check), contents: read (checkout),
+# security-events: write (SARIF upload), id-token: write (OIDC publication).
+# This file died at startup 20/20 times while the job block carried only
+# security-events + id-token, which left actions and contents at `none` (#168).
+permissions:
+  contents: read
 
 jobs:
-  analysis:
+  scorecard:
     permissions:
       actions: read
       contents: read
       security-events: write
       id-token: write
-    uses: hyperpolymath/standards/.github/workflows/scorecard-reusable.yml@bd0df9ead7faf0cdfe0e13e7966d91e28d0101d4
-    secrets: inherit
+    uses: hyperpolymath/standards/.github/workflows/scorecard-reusable.yml@0f13f51fafe9d2b670252aa2a18993223bffdece