Update workflow-preset community catalog to v1.3.1

[bigsmartben]

Summary

• update the community catalog entry for workflow-preset from v1.2.0 to v1.3.1
• point download_url at the verified v1.3.1 release ZIP artifact
• align the community presets table with the v1.3.1 manifest counts: 22 templates, 8 commands

Preset Submission

Preset Name: Workflow Preset
Preset ID: workflow-preset
Version: 1.3.1
Repository: https://github.com/bigsmartben/spec-kit-workflow-preset

Checklist

• Valid preset.yml manifest
• README.md with description and usage
• LICENSE file included
• GitHub release created
• Preset tested with specify preset add --dev
• Templates resolve correctly (specify preset resolve)
• Commands register to agent directories (if applicable)
• Commands match template sections (command + template are coherent)
• Added to presets/catalog.community.json
• Added row to docs/community/presets.md table

Validation

• uv run pytest tests/test_presets.py -v
• catalog JSON parse and alphabetical ID order check
• docs community preset table alphabetical order check
• downloaded v1.3.1 release ZIP and verified catalog version/requires/provides against preset.yml
• downstream fork integration passed: https://github.com/bigsmartben/spec-kit/actions/runs/26607265919

Testing

• Ran existing preset tests with uv run pytest tests/test_presets.py -v
• Verified catalog JSON parse and alphabetical ID order
• Verified docs community preset table alphabetical order
• Downloaded v1.3.1 release ZIP and verified catalog version/requires/provides against preset.yml
• Downstream fork integration passed: https://github.com/bigsmartben/spec-kit/actions/runs/26607265919

AI Disclosure

• I did not use AI assistance for this contribution
• I did use AI assistance: prepared and verified this catalog update with Codex.