chore: update memorylint and superb to 1.4.0

[RbBtSn0w]

Summary

• update the memorylint community catalog entry to 1.4.0, including its release asset URL and published timestamp
• update the superb community catalog entry to 1.4.0, including its release asset URL, description, and hook count
• refresh the Community Extensions docs row for Superpowers Bridge so it matches the current release positioning

Test Plan

• python3 -m json.tool extensions/catalog.community.json
• git diff --check
• PYTHONPATH=src PYENV_VERSION=3.13.12 /opt/homebrew/bin/pyenv exec python -m pytest tests/test_extensions.py -q

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Updates the community extensions catalog and documentation to reflect new releases and updated metadata for specific extensions.

Changes:

• Bumped memorylint and superb (Superpowers Bridge) extension versions and download URLs to v1.4.0.
• Updated extension metadata (provides, descriptions, timestamps) and synced the docs description for Superpowers Bridge.
• Updated the catalog-level updated_at timestamp.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
extensions/catalog.community.json	Updates extension versions/URLs, metadata, and timestamps in the community catalog.
docs/community/extensions.md	Syncs the Superpowers Bridge description in the community extensions table.

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