feat: add web probe sentinel service (#896)

Co-authored-by: Codex <codex@noreply.local>

scripts/web-probe-sentinel-service.ts

@@ -0,0 +1,61 @@
+#!/usr/bin/env bun
+// SPEC: PJ2026-01060508 Web哨兵 draft-2026-06-25-p0-web-probe-sentinel.
+// Responsibility: Bun entrypoint for the web-probe sentinel HTTP wrapper service.
+import { hwlabRuntimeLaneSpecForNode, isHwlabRuntimeLane } from "./src/hwlab-node-lanes";
+import { createWebProbeSentinelService, startWebProbeSentinelHttpService } from "./src/hwlab-node-web-sentinel-service";
+
+const args = process.argv.slice(2);
+const node = requiredOption("--node");
+const lane = requiredOption("--lane");
+if (!isHwlabRuntimeLane(lane)) throw new Error(`web-probe sentinel service only supports HWLAB runtime lanes, got ${lane}`);
+const spec = hwlabRuntimeLaneSpecForNode(lane, node);
+const stateRootOverride = optionValue("--state-root");
+const hostOverride = optionValue("--host");
+const portRaw = optionValue("--port");
+const portOverride = portRaw === undefined ? undefined : Number(portRaw);
+if (portOverride !== undefined && (!Number.isInteger(portOverride) || portOverride <= 0 || portOverride > 65535)) throw new Error("--port must be 1-65535");
+const schedulerEnabled = !args.includes("--scheduler-disabled");
+const service = createWebProbeSentinelService({ spec, stateRootOverride, hostOverride, portOverride, schedulerEnabled });
+
+if (args.includes("--once")) {
+  const health = service.health();
+  console.log(JSON.stringify(health, null, 2));
+  service.close();
+  process.exit(health.ok === true ? 0 : 1);
+}
+
+const server = startWebProbeSentinelHttpService(service);
+console.log(JSON.stringify({
+  ok: true,
+  command: "web-probe-sentinel-service",
+  node,
+  lane,
+  url: server.url,
+  schedulerEnabled,
+  health: service.health(),
+  valuesRedacted: true,
+}, null, 2));
+
+process.on("SIGTERM", () => {
+  server.stop();
+  service.close();
+  process.exit(0);
+});
+process.on("SIGINT", () => {
+  server.stop();
+  service.close();
+  process.exit(0);
+});
+
+await new Promise(() => undefined);
+
+function optionValue(name: string): string | undefined {
+  const index = args.indexOf(name);
+  return index === -1 ? undefined : args[index + 1];
+}
+
+function requiredOption(name: string): string {
+  const value = optionValue(name);
+  if (value === undefined || value.length === 0) throw new Error(`${name} is required`);
+  return value;
+}