[peterolkhov]

Summary

Deleting a populated metric definition clears its value without notifying metric listeners. A mounted MetricView keeps displaying the old number even though getMetric returns undefined.

Notify specific and wildcard listeners through the existing dispatcher after deletion. Absent, empty and repeated deletions stay quiet. If an IDs listener recreates the metric during deletion, preserve its new value and notification.

How did you test this change?

• Unchanged upstream reproduction: notification and rendered-value assertions fail; both ordinary controls pass.
• New native regressions: six assertion failures against the original owner, then all 97 affected metrics/React tests pass with the fix. The unchanged public fixture passes all four cases after the fix.
• Official CI commands: compile, lint, spelling, TypeScript and all 5,352 core tests pass. Statements, branches, functions and lines each remain at 100% across all four configured coverage bundles.

Full preCommit also includes Bun, server/database tests and a production build; those additional checks were not run.

Prepared with OpenAI Codex assistance.