fix(opencode): prevent Windows live runtime hangs

scripts/lib/opencode-live-preflight.mjs

@@ -97,6 +97,7 @@ async function canStartOpenCodeHost(opencodeBin, cwd, env) {
     cwd,
     env,
     stdio: ['ignore', 'pipe', 'pipe'],
+    windowsHide: true,
   });
   let output = '';
   let spawnError = '';
@@ -138,12 +139,17 @@ async function canStartOpenCodeHost(opencodeBin, cwd, env) {
   }
 }
 
-function stopChild(child) {
+async function stopChild(child) {
-  return new Promise((resolve) => {
   if (child.exitCode != null || child.killed) {
-      resolve();
     return;
   }
+
+  if (process.platform === 'win32' && child.pid) {
+    await taskkillProcessTree(child.pid);
+    return;
+  }
+
+  return new Promise((resolve) => {
     const timeout = setTimeout(() => {
       if (child.exitCode == null) {
         child.kill('SIGKILL');
@@ -158,6 +164,34 @@ function stopChild(child) {
   });
 }
 
+function taskkillProcessTree(pid) {
+  return new Promise((resolve) => {
+    let done = false;
+    const finish = () => {
+      if (done) return;
+      done = true;
+      clearTimeout(timeout);
+      resolve();
+    };
+    const timeout = setTimeout(finish, 5_000);
+    timeout.unref?.();
+    try {
+      const taskkill = spawn(
+        path.join(process.env.SystemRoot ?? 'C:\\Windows', 'System32', 'taskkill.exe'),
+        ['/T', '/F', '/PID', String(pid)],
+        {
+          stdio: 'ignore',
+          windowsHide: true,
+        }
+      );
+      taskkill.once('error', finish);
+      taskkill.once('close', finish);
+    } catch {
+      finish();
+    }
+  });
+}
+
 function allocateLoopbackPort() {
   return new Promise((resolve, reject) => {
     const server = net.createServer();

src/main/services/team/TeamProvisioningService.ts

@@ -152,6 +152,10 @@ import * as path from 'path';
 import pidusage from 'pidusage';
 import * as readline from 'readline';
 
+// pidusage's Windows gwmi fallback needs a non-zero cache window to finish its
+// initial two-sample pass. maxage: 0 can recurse forever on Windows.
+const RUNTIME_PIDUSAGE_OPTIONS = process.platform === 'win32' ? { maxage: 1_000 } : { maxage: 0 };
+
 import {
   ANTHROPIC_HELPER_MODE_COMPETING_AUTH_ENV_KEYS,
   type AnthropicTeamApiKeyHelperMaterial,
@@ -15298,7 +15302,7 @@ export class TeamProvisioningService {
       let rssBytes = rssPid ? rssBytesByPid.get(rssPid) : undefined;
       if (rssBytes == null && isSharedOpenCodeHost && typeof rssPid === 'number' && rssPid > 0) {
         try {
-          const refreshedStat = await pidusage(rssPid, { maxage: 0 });
+          const refreshedStat = await pidusage(rssPid, RUNTIME_PIDUSAGE_OPTIONS);
           if (Number.isFinite(refreshedStat.memory) && refreshedStat.memory >= 0) {
             rssBytesByPid.set(rssPid, refreshedStat.memory);
             rssBytes = refreshedStat.memory;
@@ -25558,7 +25562,7 @@ export class TeamProvisioningService {
     }
 
     const rssBytesByPid = new Map<number, number>();
-    const options = { maxage: 0 };
+    const options = RUNTIME_PIDUSAGE_OPTIONS;
     try {
       const statsByPid = await pidusage(uniquePids, options);
       for (const [rawPid, stat] of Object.entries(statsByPid)) {

test/main/services/team/TeamProvisioningService.test.ts

@@ -176,6 +176,9 @@ import {
 } from '@features/tmux-installer/main';
 import pidusage from 'pidusage';
 
+const EXPECTED_RUNTIME_PIDUSAGE_OPTIONS =
+  process.platform === 'win32' ? { maxage: 1_000 } : { maxage: 0 };
+
 function allowConsoleLogs() {
   vi.spyOn(console, 'error').mockImplementation(() => {});
   vi.spyOn(console, 'warn').mockImplementation(() => {});
@@ -2490,7 +2493,7 @@ describe('TeamProvisioningService', () => {
 
       const snapshot = await svc.getTeamAgentRuntimeSnapshot('runtime-team');
 
-      expect(pidusage).toHaveBeenCalledWith([111, 222], { maxage: 0 });
+      expect(pidusage).toHaveBeenCalledWith([111, 222], EXPECTED_RUNTIME_PIDUSAGE_OPTIONS);
       expect(snapshot.members['team-lead']).toMatchObject({
         pid: 111,
         rssBytes: 123_000_000,
@@ -2630,9 +2633,9 @@ describe('TeamProvisioningService', () => {
 
       const snapshot = await svc.getTeamAgentRuntimeSnapshot('runtime-team');
 
-      expect(pidusage).toHaveBeenNthCalledWith(1, [111, 222], { maxage: 0 });
+      expect(pidusage).toHaveBeenNthCalledWith(1, [111, 222], EXPECTED_RUNTIME_PIDUSAGE_OPTIONS);
-      expect(pidusage).toHaveBeenNthCalledWith(2, 111, { maxage: 0 });
+      expect(pidusage).toHaveBeenNthCalledWith(2, 111, EXPECTED_RUNTIME_PIDUSAGE_OPTIONS);
-      expect(pidusage).toHaveBeenNthCalledWith(3, 222, { maxage: 0 });
+      expect(pidusage).toHaveBeenNthCalledWith(3, 222, EXPECTED_RUNTIME_PIDUSAGE_OPTIONS);
       expect(snapshot.members['team-lead']?.rssBytes).toBe(123_000_000);
       expect(snapshot.members.alice?.rssBytes).toBe(456_000_000);
     });
@@ -2744,7 +2747,7 @@ describe('TeamProvisioningService', () => {
 
       const snapshot = await svc.getTeamAgentRuntimeSnapshot('nice-team');
 
-      expect(pidusage).toHaveBeenCalledWith([111, 333], { maxage: 0 });
+      expect(pidusage).toHaveBeenCalledWith([111, 333], EXPECTED_RUNTIME_PIDUSAGE_OPTIONS);
       expect(snapshot.members.alice).toMatchObject({
         alive: true,
         providerId: 'anthropic',
@@ -3256,8 +3259,8 @@ describe('TeamProvisioningService', () => {
 
       const snapshot = await svc.getTeamAgentRuntimeSnapshot('runtime-team');
 
-      expect(pidusage).toHaveBeenCalledWith([111, 333], { maxage: 0 });
+      expect(pidusage).toHaveBeenCalledWith([111, 333], EXPECTED_RUNTIME_PIDUSAGE_OPTIONS);
-      expect(pidusage).toHaveBeenCalledWith(333, { maxage: 0 });
+      expect(pidusage).toHaveBeenCalledWith(333, EXPECTED_RUNTIME_PIDUSAGE_OPTIONS);
       expect(snapshot.members.bob).toMatchObject({
         memberName: 'bob',
         alive: false,
@@ -3332,7 +3335,7 @@ describe('TeamProvisioningService', () => {
 
       const snapshot = await svc.getTeamAgentRuntimeSnapshot('runtime-team');
 
-      expect(pidusage).toHaveBeenCalledWith([333], { maxage: 0 });
+      expect(pidusage).toHaveBeenCalledWith([333], EXPECTED_RUNTIME_PIDUSAGE_OPTIONS);
       expect(snapshot.members.bob).toMatchObject({
         memberName: 'bob',
         alive: false,