[preset] Update Architecture Governance to v0.5.2

[chelsealong]

Summary

Update the architecture-governance community preset entry to v0.5.2, per the submission in #4042.

• presets/catalog.community.json: version, download_url, description, documentation, provides.templates (13 → 14), tags, and updated_at for the architecture-governance entry, matching the fields submitted in the issue. created_at is preserved.
• docs/community/presets.md: updated the Architecture Governance row (description and template count) in the Community Presets table.

Closes #4042

Validation performed (per .github/workflows/add-community-preset.md)

• Preset ID architecture-governance matches ^[a-z][a-z0-9-]*$.
• Version 0.5.2 is valid semver.
• Repository https://github.com/hindermath/spec-kit-preset-architecture-governance is public and contains preset.yml and LICENSE at tag v0.5.2 (HTTP 200 for both raw files).
• Documentation URL resolves to the tag's README.md, which contains a matching install command: specify preset add --from https://github.com/hindermath/spec-kit-preset-architecture-governance/archive/refs/tags/v0.5.2.zip --priority 20.
• Download URL follows the archive/refs/tags/v<version>.zip pattern and a GitHub release v0.5.2 exists for the repo (published 2026-08-08).
• preset.yml at v0.5.2 lists 14 template entries and 3 command entries, matching the issue's "Templates Provided" (14) and "Commands Provided" (3) counts.
• All Testing Checklist and Submission Requirements boxes in the issue are checked.

Test plan

• python3 -c "import json; json.load(open('presets/catalog.community.json')); print('Valid JSON')" → Valid JSON
• .venv/bin/python -m pytest tests/test_presets.py tests/contract/test_catalog_schema.py tests/unit/test_bundler_adapters.py tests/test_github_workflows.py -q
  → 1 failed, 669 passed, 2 warnings. The one failure (TestInstalledPresetRichMarkup::test_resolve_accepts_dotted_command_name) reproduces identically on unmodified main (verified via git stash) — it's a pre-existing, terminal-width-dependent Rich-output wrapping issue unrelated to this catalog data change.

This is a data-only catalog update (no source code changed), consistent with prior preset-update PRs (e.g. #3686, #4040) which also ship without new unit tests, since there is no new logic to cover — correctness here is the JSON-validity check plus the catalog/README/release validation above.

AI assistance disclosure

This PR was prepared autonomously by an AI coding agent (Claude, via Claude Code), which read the issue, re-verified the submission against the repository's own add-community-preset validation workflow, edited the two catalog files, and ran the test suite. A human has not yet reviewed this diff.

[mnriem]

@chelsealong Thank you for this PR. We are closing this as preset submission flow through our agentic workflow validation. This sidesteps that and as such cannot be accepted