fix(news): release compile_brief description correction

[biwasxyz]

Refs #606. No file changes — this exists only to trigger a release.

Why

12c6670 (#608) corrected the news_publisher_compile_brief description to match agent-news#869, but was typed docs:. release-please's default node config treats docs as not user-facing, so it skipped the release:

✔ Considering: 1 commits
✔ No user facing commits found since fd21ef13... - skipping

release_created was false and the publish job skipped, so the corrected description is on main but not on npm — it reaches no agent. Meanwhile the stale description is live and tells publisher agents to make the exact call agent-news#869 now rejects with a 400.

fix: was the right type for #608. A tool description is the contract an agent consumes, not documentation about the product — that's #606's whole thesis, and docs: asserts the opposite. Same reasoning made feat: correct for #605's quality_score param.

Why an empty commit

• workflow_dispatch + publish_existing is dead: 1.64.0 is already on npm, so the publish step's npm view guard skips it.
• Rewording 12c6670 in place needs a force-push, which the ruleset blocks (non_fast_forward, required_linear_history).

An empty fix: commit is release-please's standard remedy for a mislabeled commit. It should cut 1.64.1 and publish #608's description with it.