EMRY-043: run comparison overlay - #79
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Load a prior run's metrics.jsonl into per-metric (steps, values) series and serve it once at /baseline. The dashboard fetches it on load and overlays the matching metric as a dashed amber line behind the live curve, with the baseline's in-window points folded into the y-scale so both align. - emry-web/baseline.rs: load_baseline + Baseline/BaselineSeries - server.rs: AppState (live + baseline), /baseline route, serve_with_baseline - index.html: fetch /baseline, dashed overlay + legend - web_demo: synthesizes a slower-decaying prior run as the baseline
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Closes #31
What
Adds a run comparison overlay to the web dashboard: load a prior run's
metrics.jsonland draw its series as a dashed line behind the live curve, so a run can be compared against a baseline at the same training step.How
emry-web/baseline.rs—load_baseline(path)reads a run'smetrics.jsonl(file or run dir) into per-metric(steps, values)series (Baseline/BaselineSeries). Unparseable lines are skipped.server.rs—AppState { live, baseline }; newGET /baselineroute serving the series as JSON once;serve_with_baseline(addr, events, labels, baseline).app()/serve_with_labels()keep working with an empty baseline.index.html— fetches/baselineonce on load, overlays the matching metric as a dashed amber line, folds the baseline's in-window points into the y-scale so both curves align, and shows a "baseline" legend.web_demo— synthesizes a slower-decaying prior run as the baseline.Verification
-D warnings+ tests + 92.87% coverage).🤖 Generated with Claude Code