chore(standards): replace local standards/ with platform stub (Phase 1)

[kristopherjturner]

Phase 1 of the AzureLocal platform rollout per ADR-0002.

• Deletes standards/ (drifted duplicates of azurelocal.github.io/standards/)
• Adds STANDARDS.md at repo root — a 6-line stub linking to AzureLocal/platform/standards/

From here on, standards edits are PRs against AzureLocal/platform.

Test plan

• Repo still builds / docs still render (no internal link references into the deleted standards/ folder remain)
• STANDARDS.md link-checks

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Phase 1 of the AzureLocal standards “single source of truth” rollout: removes the repo-root standards/ markdown duplicates and introduces a root STANDARDS.md stub that points contributors to the centralized standards in AzureLocal/platform.

Changes:

• Deleted the repo-root standards/*.md pages.
• Added a root STANDARDS.md linking to AzureLocal/platform/standards and the rendered standards site.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
standards/variables.md	Removed local duplicate standards content.
standards/solutions.md	Removed local duplicate standards content.
standards/scripting.md	Removed local duplicate standards content.
standards/naming.md	Removed local duplicate standards content.
standards/infrastructure.md	Removed local duplicate standards content.
standards/index.md	Removed local standards index page.
standards/examples.md	Removed local examples/IIC policy page.
standards/documentation.md	Removed local documentation standards page.
standards/automation.md	Removed local automation interoperability page.
STANDARDS.md	Added a root-level stub pointing to the central standards source and governance ADR.

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[Copilot]

STANDARDS.md states that this repo "does not keep a local copy", but docs/standards/* still exists (and mkdocs.yml nav points to those pages). Either remove/replace the docs/standards pages as part of this phase, or adjust this wording to accurately describe what remains in-repo (e.g., distinguish between the removed root standards/ duplicates vs the docs site content).

Suggested change

	AzureLocal organization standards are maintained centrally in the [`AzureLocal/platform`](https://github.com/AzureLocal/platform) repository. This repo does **not** keep a local copy.
	AzureLocal organization standards are maintained centrally in the [`AzureLocal/platform`](https://github.com/AzureLocal/platform) repository. This repo does **not** maintain a separate canonical copy; any in-repo standards pages are documentation-site content/rendered copies, and the source of truth remains in `AzureLocal/platform`.