Release @onkernel/browser-loop v0.12.1

[dprevoznik]

Summary

• Bumps @onkernel/browser-loop to 0.12.1 and adds the changelog entry for Relax @onkernel/sdk peer version pin to a caret range #94 (relaxing the @onkernel/sdk dependency from an exact pin to >=0.49.0 <1.0.0).
• Follow-up to Relax @onkernel/sdk peer version pin to a caret range #94, kept as its own PR per the repo's existing pattern of separate release commits (see the standalone Release v0.12.0 commit).
• Merging this is expected to be followed by pushing the browser-loop/v0.12.1 tag to trigger the publish workflow.

Test plan

• npm run check:lockfile
• npm run typecheck (workspace @onkernel/browser-loop)

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Note

Low Risk
Release-only version and changelog updates with no application code changes; the SDK range widening was handled in a prior PR.

Overview
Release @onkernel/browser-loop v0.12.1 — version bump in package.json and package-lock.json, plus a changelog entry for the already-landed dependency change from #94.

The 0.12.1 note documents relaxing @onkernel/sdk from an exact pin to >=0.49.0 <1.0.0, so consumers can use compatible SDK minors without waiting on a browser-loop release. No runtime or API code changes in this diff; merging is intended to be followed by tagging browser-loop/v0.12.1 to publish.

^{Reviewed by Cursor Bugbot for commit 796161e. Bugbot is set up for automated code reviews on this repo. Configure here.}