release: Briefprint 0.5.0

[dd3ok]

Summary

• bump runtime, package, skill metadata, and validators to 0.5.0
• date the 0.5.0 changelog and document cache cold-start behavior for summary and rendered-output caches
• update latest fetched origin/main CI receipt to 344f05d / run 28761659503
• clarify benchmark 0 rows as intentional cache reuse evidence and keep internal superpowers plans out of sdists

Validation

• python -m pytest -q -p no:cacheprovider -> 169 passed, 2 skipped
• python scripts\validate_skill.py --run-evals -> OK
• ruff check . -> All checks passed
• git diff --check -> no whitespace errors; CRLF normalization warnings only
• python -m build -> built wheel and sdist for 0.5.0
• sdist tar check -> no docs/superpowers/plans entries
• installed smoke from wheel -> 1 passed
• installed smoke from sdist -> 1 passed
• independent review: code-reviewer no findings, architect CLEAR

[gemini-code-assist]

Code Review

This pull request bumps the project version and skill metadata from 0.4.0 to 0.5.0 across all configuration files, source code, tests, and agent manifests. It also updates the changelog, prunes a documentation directory in MANIFEST.in, and refines the benchmark documentation in the English and Korean README files to clarify cache-miss metrics. There are no review comments, so I have no feedback to provide.

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