ci(scorecard): add job-level permissions for reusable workflow (#83)

## Summary

Adds the job-level `permissions: { security-events: write, id-token:
write }` block to the `analysis` job in
`.github/workflows/scorecard.yml`, fixing the silent `startup_failure`
on every Scorecard run.

## Why

`scorecard-reusable.yml`'s docstring states:

> Caller MUST grant `security-events: write` and `id-token: write` on
the calling job. The reusable re-asserts these on its own analysis job,
but **called-workflow permissions are CAPPED by the caller's permissions
block.**

Without this, `ossf/scorecard-action` cannot upload SARIF, the workflow
fails at startup, and there are no logs.

## Sweep

Part of estate-wide sweep tracked at hyperpolymath/standards#282.
Pattern shipped in julia-professional-registry#19 (2026-05-27) and
absolute-zero#68 (2026-05-30).

## Test plan

- [ ] Next Scorecard run completes successfully (cron `'23 4 * * 1'`)
- [ ] SARIF appears in Security tab
- [ ] No `startup_failure` runs after merge

Refs hyperpolymath/standards#282

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: hyperpolymath

.github/workflows/scorecard.yml

@@ -12,5 +12,8 @@ permissions: read-all
 
 jobs:
   analysis:
+    permissions:
+      security-events: write
+      id-token: write
     uses: hyperpolymath/standards/.github/workflows/scorecard-reusable.yml@e0caf11508a3989574713c78f5f444f2ce5e33ef
     secrets: inherit