chore(release): release 5 plugins

[melodic-plugin-release]

Releases 5 plugins from the changelog fragments on main at 64720ca, per ADR 0048.

Plugin	Old	New	Bump	Fragments consumed
ai-slop	0.14.3	0.14.4	patch	.changes/ai-slop/fix-lane-shell-scope-01b22795.md
context7	0.8.0	0.8.1	patch	.changes/context7/fix-context7-lookup-drift-890c7864.md
planning	0.78.1	0.79.0	minor	.changes/planning/feat-shared-surfaces-actions-5c2e8a71.md
pr-pipeline	2.19.1	2.19.2	patch	.changes/pr-pipeline/fix-lane-shell-scope-26dcd147.md
skill-quality	0.30.1	0.31.0	minor	.changes/skill-quality/feat-skill-quality-upstream-sha-pairing-236b3cc1.md

The release-publish-plugins workflow queues this pull request itself once ci-status is green (every 3 hours, on a fragment push, or by hand with action merge). Never use the merge button: the workflow checks it against main's live tip first.

[github-actions]

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