docs: strengthen skip-if-match guidance for scheduled issue-creating workflows

[Copilot]

Agents correctly use skip-if-match for PR deduplication but routinely miss applying it to scheduled workflows that create issues, resulting in duplicate issues on every run.

Changes

• create-agentic-workflow.md — Added a dedicated bullet under the Safe Outputs design checklist for scheduled + create-issue combinations, with an inline example pairing skip-if-match: and expires:.

• github-agentic-workflows.md — Added a Deduplication for Scheduled Workflows paragraph in the create-issue reference section (alongside the existing Auto-Expiration note), with a full frontmatter example:

on:
  schedule: daily on weekdays
  skip-if-match: 'is:issue is:open in:title "[my-workflow] "'
safe-outputs:
  create-issue:
    title-prefix: "[my-workflow] "
    expires: 7

[Copilot]

Pull request overview

Strengthens documentation guidance for using skip-if-match to deduplicate scheduled workflows that create issues, preventing repeated duplicate issues across scheduled runs.

Changes:

• Added a “Deduplication for Scheduled Workflows” note to the safe-outputs.create-issue reference, including a full example pairing skip-if-match with expires.
• Added a new Safe Outputs checklist bullet calling out scheduled + create-issue deduplication, with an inline example and rationale.

Show a summary per file

File	Description
.github/aw/github-agentic-workflows.md	Adds a dedicated deduplication paragraph + example for scheduled workflows that create issues.
.github/aw/create-agentic-workflow.md	Updates the Safe Outputs checklist to explicitly require skip-if-match (and expires) for scheduled issue-creating workflows.

Copilot's findings

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• Files reviewed: 2/2 changed files
• Comments generated: 2

[Copilot]

The example for “Scheduled workflows that create issues” shows on: with only skip-if-match, but no actual trigger (e.g., schedule:). Since skip-if-match is a modifier rather than a trigger, copying this example would produce invalid frontmatter / a compile error. Add a schedule: line (and optionally show it combined with skip-if-match) to make the example runnable.

Suggested change

	on:
	on:
	schedule:
	- cron: '0 9 * * *'

[Copilot]

In the example, title-prefix includes a trailing space ("[workflow-name] ") but the skip-if-match query searches for "[workflow-name]" without the trailing space. This still matches, but it’s less precise and inconsistent with the more exact scheduled-workflow example in github-agentic-workflows.md. Consider aligning the query string with the exact prefix (including the trailing space) to reduce accidental matches.