Dashboard: add copy buttons for job/run IDs

[yaront1111]

Context

Job and run IDs are frequently copied for tracing/debugging, but the dashboard requires manual selection.

Task

Add copy-to-clipboard buttons for job and run IDs in the detail views.

Acceptance criteria

• Add a small copy control near the ID in dashboard/src/pages/JobDetailPage.tsx and dashboard/src/pages/RunDetailPage.tsx.
• Use the Clipboard API (navigator.clipboard.writeText).
• Provide a brief visual confirmation (text change or subtle toast).