[aw-daily] GAP-001: Add pre-steps: field to frontmatter-schema.md (v0.68.3)

[zircote]

Gap Details

Type: missing
File: skills/aw-author/references/frontmatter-schema.md
Section: Quick Index table + Section 8 Steps & Post-Steps

Current Content

The Quick Index table has post-steps and steps entries but no pre-steps entry. Section 8 documents steps and post-steps but has no pre-steps definition.

Expected Content

Quick Index entry:

| `pre-steps` | [Steps & Post-Steps](#8-steps--post-steps) | [link](#pre-steps) |

Section definition (after steps entry, before post-steps):

### `pre-steps`

- **Type:** object | array
- **Required:** no
- **Default:** none
- **Description:** Custom workflow steps that run at the very **beginning** of the agent job, before the repository is checked out.

```yaml
pre-steps:
  - name: Mint app token
    id: app-token
    uses: actions/create-github-app-token@v2
    with:
      app-id: ${{ vars.APP_ID }}
      private-key: ${{ secrets.APP_KEY }}

Use cases:

• Token minting that must happen before checkout (avoids masked-value cross-job boundary issues with checkout.github-token)
• Environment preparation required before repository access

Step outputs are available via ${{ steps.<id>.outputs.<name> }} and can be referenced in checkout.github-token.

Same security restrictions apply as for steps: (runs outside the firewall sandbox).

## Source

PR #26607 in github/gh-aw: [Sync github-agentic-workflows.md with v0.68.3](https://github.com/github/gh-aw/pull/26607)

## Intelligence Report

https://github.com/zircote/github-agentic-workflows/discussions/24

---
_Automated by /aw-daily on 2026-04-16_

[zircote]

Fixed in #30 (merged to develop on 2026-04-16). The pre-steps: field is now documented in skills/aw-author/references/frontmatter-schema.md.

Closing manually because GitHub's auto-close keywords only fire on merges to the default branch (main). The change will reach main on the next /aw-merge (develop → main).