feat(bench): live flight-recorder dashboard (e2ebench -mode serve) - #7941
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feat(bench): live flight-recorder dashboard (e2ebench -mode serve)#7941esengine wants to merge 1 commit into
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A local dashboard for watching a bench run while it writes trajectories: 'e2ebench -mode serve -trajectories <dir>' re-summarizes every trajectory per poll behind /api/state and serves one self-contained dark instrument page. The run renders as a strip of task segments; each task as a recessed per-round trace whose win/break polarity is carried by geometry (up/down off the baseline) because the green/red pair alone fails CVD validation. The renderer is incremental - DOM nodes are keyed, new rounds pop in, numbers tween, hover survives polling. A replay engine scrubs the whole run by wall-clock timestamp (play/pause, 30-600x, jump-to-task), so a finished run can be watched back round by round. Suite awareness lists queued tasks as ghosts and prices the remaining time. summarizeTrajectory splits into scanTrajectoryFile + finish so the dashboard can read the raw outcome series the summary discards; rounds gain their observation timestamp for the replay timeline.
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Self-review notes (no code change needed): CSP-free local page, all state derived from /api/state; the renderer is keyed so polling cannot destroy hover/replay state; replay bounds guard division by zero when a run has a single round; task IDs come from local trajectory filenames (trusted input for a localhost dev tool). One deliberate trade-off documented here: the dashboard does not yet render the debt/TTFDC fields added later in the stack — follow-up once the enforcement experiments need them on screen. |
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Stacked on #7937 (uses its outcome series). Live local dashboard for e2ebench runs.
What
e2ebench -mode serve -trajectories <dir> [-suite <root>] [-addr host:port]: serves a self-contained dark "flight recorder" page polling/api/stateevery 2s while a bench run writes trajectories.summarizeTrajectorysplits intoscanTrajectoryFile+finishso the dashboard can read the raw per-round series; outcome rounds carry their observation timestamp (additive JSONL fieldt).Verification
go vet ./cmd/e2ebench/andgo test ./cmd/e2ebench/pass; page exercised against the recorded 49-task run (live view, replay, tooltips, jump-to-card) with headless-Chromium screenshots in light/dark.Documentation-impact: none - e2ebench is a developer benchmarking tool; its flags are self-documented via -h and not covered by docs/*.md