Metrics:
- Replace canvas JS charts with server-side SVG via go-analyze/charts
- Add ring buffers (120 samples) for CPU temp and power
- /api/metrics/chart/{name}.svg endpoint serves live SVG, polled every 2s
Dashboard:
- Replace custom renderViewerPage with viewer.RenderHTML() from reanimator/chart submodule
- Mount chart static assets at /chart/static/
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>