feat(web-probe): add typed Kafka live fanout validation

scripts/src/hwlab-node-help.ts

@@ -60,6 +60,8 @@ export function hwlabNodeWebProbeHelp(): Record<string, unknown> {
       "bun scripts/cli.ts web-probe observe start --node <node> --lane <lane> --target-path /workbench --sample-interval-ms 5000",
       "bun scripts/cli.ts web-probe observe start --node <node> --lane <lane> --target-path /projects/mdtodo --sample-interval-ms 5000",
       "bun scripts/cli.ts web-probe observe command webobs-xxxx --type sendPrompt --text 'ping'",
+      "bun scripts/cli.ts web-probe observe command webobs-xxxx --type validateRealtimeFanout --profile pure-kafka-live --provider gpt.pika --text '<first-turn>' --second-text '<second-turn>'",
+      "bun scripts/cli.ts web-probe observe status webobs-xxxx --command-id cmd-xxxx",
       "bun scripts/cli.ts web-probe observe command webobs-xxxx --type closeMdtodoSourceConfig",
       "bun scripts/cli.ts web-probe observe command webobs-xxxx --type selectMdtodoFile --filename 20260609_频率判断_用户反馈.md",
       "bun scripts/cli.ts web-probe observe command webobs-xxxx --type openMdtodoReportPreview --task R1 --link R1.1",
@@ -100,10 +102,12 @@ export function hwlabNodeWebProbeHelp(): Record<string, unknown> {
     notes: [
       "Default URL, browser proxy mode, observe/analyze thresholds, and project-management command allowlist come from config/hwlab-node-lanes.yaml webProbe.",
       "`web-probe script` is an ad-hoc exploration escape hatch; repeated/high-frequency workflows must become `web-probe observe command` types or repo-owned web-probe commands.",
+      "Every script result starts with machine-readable `UNIDESK_WEB_PROBE_COMMAND_PROMOTION_HINT <json>` guidance; repo-owned generated commands report reuse instead of ad-hoc promotion.",
       "`web-probe opencode-smoke` is the repo-owned OpenCode smoke; prefer it over repeating one-off OpenCode Playwright snippets.",
       "observe is passive by default; user actions must be explicit observe command entries in control.jsonl.",
       "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.",
+      "validateRealtimeFanout is a YAML-profiled background command: it gates submit on two live product subscribers plus three Kafka debug consumers, validates two turns and disconnect/reconnect without replay, and is polled by exact command id.",
       "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.",