test(core): skip platform-neutral shell retention test on Windows

packages/core/test/tool-shell.test.ts

@@ -856,31 +856,33 @@ describe("ShellTool", () => {
     { timeout: 15_000 },
   )
 
-  it.live("does not retain removed running shells in exit order", () =>
-    Effect.acquireUseRelease(
-      Effect.promise(() => tmpdir()),
-      (tmp) =>
-        withSession(tmp.path, () =>
-          Effect.gen(function* () {
-            const shell = yield* Shell.Service
-            yield* Effect.forEach(Array.from({ length: 26 }), () =>
-              Effect.gen(function* () {
-                const info = yield* shell.create({ command: idleCommand, timeout: 0 })
-                yield* shell.remove(info.id)
-                yield* Effect.sleep(Duration.millis(10))
-              }),
-            )
-
-            const info = yield* shell.create({ command: helloCommand, timeout: 0 })
-            const settled = yield* shell.wait(info.id).pipe(Effect.timeoutOption(Duration.seconds(2)))
-            expect(settled._tag).toBe("Some")
-          }),
-        ),
-      (tmp) => Effect.promise(() => tmp[Symbol.asyncDispose]().then(() => undefined)),
-    ),
-  )
-
+  // Retention is platform-independent; starting 27 PowerShell processes serially only exercises
+  // Windows process startup and can exceed Bun's default per-test timeout.
   if (!isWindows) {
+    it.live("does not retain removed running shells in exit order", () =>
+      Effect.acquireUseRelease(
+        Effect.promise(() => tmpdir()),
+        (tmp) =>
+          withSession(tmp.path, () =>
+            Effect.gen(function* () {
+              const shell = yield* Shell.Service
+              yield* Effect.forEach(Array.from({ length: 26 }), () =>
+                Effect.gen(function* () {
+                  const info = yield* shell.create({ command: idleCommand, timeout: 0 })
+                  yield* shell.remove(info.id)
+                  yield* Effect.sleep(Duration.millis(10))
+                }),
+              )
+
+              const info = yield* shell.create({ command: helloCommand, timeout: 0 })
+              const settled = yield* shell.wait(info.id).pipe(Effect.timeoutOption(Duration.seconds(2)))
+              expect(settled._tag).toBe("Some")
+            }),
+          ),
+        (tmp) => Effect.promise(() => tmp[Symbol.asyncDispose]().then(() => undefined)),
+      ),
+    )
+
     it.live("settles a shell terminated by an external signal", () =>
       Effect.acquireUseRelease(
         Effect.promise(() => tmpdir()),