fix(ci): allow workflow_dispatch to trigger release

[slashben]

Summary

• The release job's if condition required a merged PR with a release label, making workflow_dispatch always skip
• Add github.event_name == 'workflow_dispatch' so manual triggers work as a fallback
• This also has a real file change so the pull_request_target event actually fires (empty commits from PR chore: trigger v0.0.12 release #35 were silently skipped by paths-ignore)

Test plan

• Merge this PR with release label → v0.0.12 release should complete

Summary by CodeRabbit

• Chores
  • Enhanced release workflow to enable manual triggering via workflow dispatch, providing additional flexibility alongside automatic releases on merged pull requests with the release label.

[coderabbitai]

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Free

Run ID: 3b30a6ea-d629-4e8a-a198-2a04781d12d8

📥 Commits

Reviewing files that changed from the base of the PR and between 9a22cf3 and 859c6c6.

📒 Files selected for processing (1)

• .github/workflows/pr-merged.yaml

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📝 Walkthrough

Walkthrough

The PR adds workflow_dispatch support to the release job condition in the CI workflow, enabling manual release triggering while preserving the existing automatic release on merged PRs with the release label.

Changes

Release Workflow Trigger

Layer / File(s)	Summary
Release job dispatch trigger condition .github/workflows/pr-merged.yaml	The release job's if: condition is expanded to include workflow_dispatch event, allowing manual release triggers via the GitHub Actions UI in addition to automatic releases on merged PRs with the release label.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A manual release trigger appears,
No more waiting for merged PR cheers,
With workflow_dispatch now in the fold,
Release what you wish, when bold—
Automation bends to the operator's will! ✨

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Note

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[Copilot]

Pull request overview

Updates the release workflow gating so the release job can be run manually via workflow_dispatch in addition to the existing “merged PR with release label” path, allowing a manual fallback when automation is skipped.

Changes:

• Extend the release job if condition to allow workflow_dispatch triggers.
• Preserve the existing PR-merge + release label logic under a grouped condition.

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