[mnriem]

Description

Move the Extension Publishing Guide from extensions/EXTENSION-PUBLISHING-GUIDE.md to docs/extensions/publishing.md so it is published on the documentation website.

• Include the new directory in DocFX and add Community > Publishing Extensions to site navigation.
• Update existing references and use published-site URLs for publishing-guide links outside docs/.
• Repair the moved guide's outgoing documentation links.
• Clarify that submissions not using the issue template will be closed with a request to resubmit using it.

Testing

• Tested locally with uv run specify --help
• Ran existing tests with uv sync && uv run pytest
• Tested with a sample project (if applicable)

Documentation-only change; CLI tests and sample-project testing were not run.

• docfx docs/docfx.json — passed with zero errors and three existing warnings about parent-directory globs and an unrelated link in docs/reference/core.md.
• git diff --check — passed.
• Previewed the publishing guide locally and confirmed the Community navigation points to the generated page.

AI Disclosure

• I did not use AI assistance for this contribution
• I did use AI assistance (fill in the disclosure below)

AI disclosure: Authored with GitHub Copilot using GPT-6.1 Sol (model ID: gpt-6.1-sol), default reasoning settings, autonomous editing under human direction. AI assistance covered the documentation move, navigation and link updates, submission-policy wording, local preview, validation, commit, and PR preparation. No CLI runtime code was changed.

[Copilot]

🟢 Approval recommended

No active review issues remain for the publishing-guide relocation and related documentation updates.

No open issues 🎉

What changed in this PR

Publishes the Extension Publishing Guide on Spec Kit’s documentation site and connects it to the community contribution documentation.

Changes:

• Moves the guide into docs/extensions/ and adds DocFX inclusion and community navigation.
• Updates references to the relocated guide and repairs outgoing documentation links.
• Clarifies that submissions must use the issue template.

File	Description
extensions/​template/​README.md	Links starter projects to the published guide.
extensions/​README.md	Updates the catalog submission guidance link.
extensions/​EXTENSION-USER-GUIDE.md	Updates the publishing resource link.
extensions/​EXTENSION-DEVELOPMENT-GUIDE.md	Links publishing instructions to the documentation site.
docs/​toc.yml	Adds Publishing Extensions under Community.
docs/​reference/​catalogs.md	Uses a site-relative publishing-guide link.
docs/​README.md	Lists the guide in the documentation structure.
docs/​extensions/​publishing.md	Relocates the guide, repairs links, and clarifies submission policy.
docs/​docfx.json	Includes extension documentation in the site build.
docs/​community/​overview.md	Links contributors to the relocated guide.
docs/​community/​extensions.md	Updates the extension submission guidance link.
.github/​skills/​add-community-extension/​SKILL.md	Updates the publishing-rules source path.
.github/​ISSUE_TEMPLATE/​extension_submission.yml	Points the submission form to the published guide.

_{Review effort: Max}