feat(standards): add scheduled sync workflow from AzureLocal/platform

[kristopherjturner]

Summary

Wires this site up as the rendering consumer for AzureLocal/platform/standards/, per ADR-0002. Part of Phase 1 (standards consolidation) of the platform rollout.

Triggers:

• Weekly cron (Mondays 06:00 UTC) — safety-net
• workflow_dispatch — manual sync with optional ref input (branch or tag)
• repository_dispatch: platform-standards-updated — fired by the platform release workflow on every version tag (wiring on the platform side is a follow-up; cron covers until then)

Behavior: copies platform/standards/*.mdx into this repo's standards/, detects diff, opens a PR titled chore(standards): sync from AzureLocal/platform if anything changed. No-op if clean.

Why not auto-commit

The sync could push directly to main, but going through a PR preserves:

• Deploy-to-Pages gating (the site's deploy.yml requires main pushes to be intentional)
• A visible audit trail of content drift between platform releases
• A review step for rendering regressions (Docusaurus sometimes chokes on new MDX constructs)

Downstream

After merge + first successful run, this unblocks deleting local /standards/ folders from the 6 product repos (azurelocal-avd, azurelocal-sofs-fslogix, azurelocal-loadtools, azurelocal-vm-conversion-toolkit, azurelocal-copilot, azurelocal-nutanix-migration) — each replaced by a STANDARDS.md stub pointing at platform.

Test plan

• Workflow file passes YAML syntax check
• Manual workflow_dispatch against platform_ref=main produces a no-op (site and platform now identical byte-for-byte)
• Manual workflow_dispatch against platform_ref=<future-tag> opens a PR if platform tagged new content
• Weekly cron fires on its next schedule window (Monday 06:00 UTC)

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Adds a GitHub Actions workflow to periodically and manually sync standards/*.mdx from AzureLocal/platform into this repo and open a PR when differences are detected, aligning with ADR-0002’s “single source of truth” approach.

Changes:

• Introduces a scheduled + manual + repository_dispatch workflow trigger for standards syncing.
• Checks out AzureLocal/platform at a selected ref and copies standards/*.mdx into this repo.
• Opens a PR via peter-evans/create-pull-request when changes are detected.

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[Copilot]

The copy step only overwrites/creates files; it never removes standards/*.mdx that were deleted (or renamed) upstream in AzureLocal/platform. That means the sync can report a clean diff while stale local standards pages remain and continue to render. Consider mirroring instead (e.g., delete existing standards/*.mdx before copying, or use rsync --delete for just the .mdx files) so upstream deletions are reflected here.

Suggested change

	# Copy only .mdx (README.md on platform is an index for humans, not a rendered page)
	find _platform/standards -maxdepth 1 -name "*.mdx" -print0 \
	# Mirror only top-level .mdx files (README.md on platform is an index
	# for humans, not a rendered page) so upstream deletions/renames are
	# reflected locally without touching non-.mdx files.
	find standards -maxdepth 1 -name "*.mdx" -type f -delete
	find _platform/standards -maxdepth 1 -name "*.mdx" -type f -print0 \

[Copilot]

git diff --quiet -- standards/ does not detect untracked files. If AzureLocal/platform adds a new standards/*.mdx, the copy step creates an untracked file here and this step can still report changed=false, so no PR is opened. Use a detector that includes untracked files (e.g., git status --porcelain -- standards/), or stage intent-to-add (git add -N standards/) before diffing.

Suggested change

	if git diff --quiet --exit-code -- standards/; then
	echo "changed=false" >> "$GITHUB_OUTPUT"
	echo "No standards changes — nothing to sync."
	else
	echo "changed=true" >> "$GITHUB_OUTPUT"
	git diff --stat -- standards/
	if [ -z "$(git status --porcelain -- standards/)" ]; then
	echo "changed=false" >> "$GITHUB_OUTPUT"
	echo "No standards changes — nothing to sync."
	else
	echo "changed=true" >> "$GITHUB_OUTPUT"
	git status --short -- standards/