diff --git a/packages/kilo-jetbrains/build-tasks/.gradle/9.4.1/executionHistory/executionHistory.bin b/packages/kilo-jetbrains/build-tasks/.gradle/9.4.1/executionHistory/executionHistory.bin
deleted file mode 100644
index 4029e652d0d..00000000000
Binary files a/packages/kilo-jetbrains/build-tasks/.gradle/9.4.1/executionHistory/executionHistory.bin and /dev/null differ
diff --git a/packages/kilo-jetbrains/build-tasks/.gradle/9.4.1/executionHistory/executionHistory.lock b/packages/kilo-jetbrains/build-tasks/.gradle/9.4.1/executionHistory/executionHistory.lock
deleted file mode 100644
index d6b9a37badb..00000000000
Binary files a/packages/kilo-jetbrains/build-tasks/.gradle/9.4.1/executionHistory/executionHistory.lock and /dev/null differ
diff --git a/packages/kilo-jetbrains/build-tasks/.gradle/buildOutputCleanup/buildOutputCleanup.lock b/packages/kilo-jetbrains/build-tasks/.gradle/buildOutputCleanup/buildOutputCleanup.lock
deleted file mode 100644
index 4b8c6caa37c..00000000000
Binary files a/packages/kilo-jetbrains/build-tasks/.gradle/buildOutputCleanup/buildOutputCleanup.lock and /dev/null differ
diff --git a/packages/kilo-jetbrains/build-tasks/.gradle/buildOutputCleanup/cache.properties b/packages/kilo-jetbrains/build-tasks/.gradle/buildOutputCleanup/cache.properties
deleted file mode 100644
index 0a05d98f9bd..00000000000
--- a/packages/kilo-jetbrains/build-tasks/.gradle/buildOutputCleanup/cache.properties
+++ /dev/null
@@ -1,2 +0,0 @@
-#Tue May 19 16:04:08 CEST 2026
-gradle.version=9.4.1
diff --git a/packages/kilo-jetbrains/build-tasks/.gradle/buildOutputCleanup/outputFiles.bin b/packages/kilo-jetbrains/build-tasks/.gradle/buildOutputCleanup/outputFiles.bin
deleted file mode 100644
index 4b2f277b5af..00000000000
Binary files a/packages/kilo-jetbrains/build-tasks/.gradle/buildOutputCleanup/outputFiles.bin and /dev/null differ
diff --git a/packages/kilo-jetbrains/build-tasks/.gradle/file-system.probe b/packages/kilo-jetbrains/build-tasks/.gradle/file-system.probe
deleted file mode 100644
index 8ef91659780..00000000000
Binary files a/packages/kilo-jetbrains/build-tasks/.gradle/file-system.probe and /dev/null differ
diff --git a/packages/opencode/test/kilocode/background-process.test.ts b/packages/opencode/test/kilocode/background-process.test.ts
index e4231d03c8d..911f5ac8a88 100644
--- a/packages/opencode/test/kilocode/background-process.test.ts
+++ b/packages/opencode/test/kilocode/background-process.test.ts
@@ -2,10 +2,27 @@ import { describe, expect } from "bun:test"
 import { Bus } from "@/bus"
 import { BackgroundProcess } from "@/kilocode/background-process"
 import { SessionID } from "@/session/schema"
+import { Shell } from "@/shell/shell"
 import { Effect } from "effect"
+import path from "path"
 import { TestInstance } from "../fixture/fixture"
 import { it } from "../lib/effect"
 
+function quote(input: string) {
+  const value = input.replaceAll("\\", "/")
+  if (process.platform === "win32") return `"${value.replaceAll('"', '""')}"`
+  return `'${value.replaceAll("'", "'\\''")}'`
+}
+
+async function script(dir: string, name: string, source: string) {
+  const file = path.join(dir, name)
+  await Bun.write(file, source)
+  const bin = quote(process.execPath)
+  const arg = quote(file)
+  if (Shell.ps(Shell.acceptable())) return `& ${bin} ${arg}`
+  return `${bin} ${arg}`
+}
+
 function update(sessionID: SessionID) {
   const state: { off?: () => void; timer?: ReturnType<typeof setTimeout> } = {}
   const promise = new Promise<BackgroundProcess.Info>((resolve, reject) => {
@@ -36,7 +53,15 @@ describe("BackgroundProcess", () => {
     Effect.gen(function* () {
       const test = yield* TestInstance
       const sessionID = SessionID.descending()
-      const command = "printf 'ready\\n'; while true; do sleep 1; done"
+      const command = yield* Effect.promise(() =>
+        script(
+          test.directory,
+          "ready.mjs",
+          `console.log("ready")
+setInterval(() => {}, 1_000)
+`,
+        ),
+      )
 
       const info = yield* Effect.promise(() =>
         BackgroundProcess.start({
@@ -56,8 +81,10 @@ describe("BackgroundProcess", () => {
 
       const stopped = yield* Effect.promise(() => BackgroundProcess.stop(info.id))
       expect(stopped?.status).toBe("stopped")
-      expect(stopped?.exitCode).toBeUndefined()
-      expect(stopped?.signal).toBe("SIGTERM")
+      if (process.platform !== "win32") {
+        expect(stopped?.exitCode).toBeUndefined()
+        expect(stopped?.signal).toBe("SIGTERM")
+      }
 
       yield* Effect.promise(() => BackgroundProcess.stopSession(sessionID))
       const next = yield* Effect.promise(() => BackgroundProcess.list({ sessionID }))
@@ -69,7 +96,16 @@ describe("BackgroundProcess", () => {
     Effect.gen(function* () {
       const test = yield* TestInstance
       const sessionID = SessionID.descending()
-      const command = "printf 'ready\n'; sleep 0.2; printf 'tick\n'; while true; do sleep 1; done"
+      const command = yield* Effect.promise(() =>
+        script(
+          test.directory,
+          "tick.mjs",
+          `console.log("ready")
+setTimeout(() => console.log("tick"), 200)
+setInterval(() => {}, 1_000)
+`,
+        ),
+      )
       const wait = update(sessionID)
       const info = yield* Effect.promise(() =>
         BackgroundProcess.start({