feat: add web probe performance hotspot analysis

scripts/src/hwlab-node-help.ts

@@ -66,9 +66,11 @@ export function hwlabNodeWebProbeHelp(): Record<string, unknown> {
       "bun scripts/cli.ts web-probe observe command webobs-xxxx --type toggleMdtodoReportFullscreen --text toggle",
       "bun scripts/cli.ts web-probe observe command webobs-xxxx --type editMdtodoTaskInline --task R1 --field body --text 'body updated through web-probe command'",
       "bun scripts/cli.ts web-probe observe command webobs-xxxx --type launchWorkbenchFromMdtodo --filename 20260610-LVDT-旧过程归档.md --task R5.1 --provider dsflash-go",
+      "bun scripts/cli.ts web-probe observe command webobs-xxxx --type performanceCapture --duration-ms 5000 --wait-ms 8000",
       "bun scripts/cli.ts web-probe observe status webobs-xxxx",
       "bun scripts/cli.ts web-probe observe collect webobs-xxxx --view turn-summary",
       "bun scripts/cli.ts web-probe observe collect webobs-xxxx --view workbench-triad --trace-id trc_xxxx",
+      "bun scripts/cli.ts web-probe observe collect webobs-xxxx --view performance-summary",
       "bun scripts/cli.ts web-probe observe collect webobs-xxxx --view timeline --command-id cmd-xxxx",
       "bun scripts/cli.ts web-probe observe collect webobs-xxxx --view project-mdtodo-summary",
       "bun scripts/cli.ts web-probe observe analyze webobs-xxxx",
@@ -100,6 +102,7 @@ export function hwlabNodeWebProbeHelp(): Record<string, unknown> {
       "observe gc keeps manifest, heartbeat, control/error logs and analysis reports, and only removes dead-run raw samples/browser/network/screenshot artifacts after YAML-configured retention.",
       "After observe start, prefer observe status|command|stop|collect|analyze <id> instead of repeating --node/--lane/--state-dir.",
       "collect views render bounded summaries from existing artifacts and do not create a second source of truth.",
+      "performanceCapture records an explicit bounded Chrome CPU profile and drains LongTask/LoAF/event-loop-gap artifacts; performance-summary reads existing artifacts only.",
       "analyze is offline-only: it reads artifact JSONL and writes analysis/report.md plus analysis/report.json.",
       "`web-probe sentinel report --raw` returns bounded issue evidence JSON, including report/artifact SHA and root-cause signal summaries when available; use `--full` for the full indexed service payload.",
       "When multiple web-probe sentinels are declared, sentinel image/control-plane/validate/maintenance/dashboard/report require `--sentinel <id>`; plan/status without it show the registry drill-down.",