diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5aa7afeed..8bb0d084d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,6 +14,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          submodules: recursive
 
       - name: Setup Node.js
         if: matrix.runtime == 'node'
@@ -26,7 +28,9 @@ jobs:
         if: matrix.runtime == 'bun'
         uses: oven-sh/setup-bun@v2
         with:
-          bun-version: "1.3.x"
+          # bun.sh downloads currently fail with:
+          # "Failed to list releases from GitHub: 401" -> "Unexpected HTTP response: 400"
+          bun-download-url: "https://github.com/oven-sh/bun/releases/latest/download/bun-linux-x64.zip"
 
       - name: Setup Node.js (tooling for bun)
         if: matrix.runtime == 'bun'
@@ -93,6 +97,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          submodules: recursive
 
       - name: Select Xcode 26.1
         run: |
diff --git a/src/infra/restart.ts b/src/infra/restart.ts
index 46c93b38b..c7b3b703d 100644
--- a/src/infra/restart.ts
+++ b/src/infra/restart.ts
@@ -3,6 +3,10 @@ import { spawn } from "node:child_process";
 const DEFAULT_LAUNCHD_LABEL = "com.steipete.clawdis";
 
 export function triggerClawdisRestart(): void {
+  if (process.platform !== "darwin") {
+    return;
+  }
+
   const label = process.env.CLAWDIS_LAUNCHD_LABEL || DEFAULT_LAUNCHD_LABEL;
   const uid =
     typeof process.getuid === "function" ? process.getuid() : undefined;
@@ -11,5 +15,8 @@ export function triggerClawdisRestart(): void {
     detached: true,
     stdio: "ignore",
   });
+  child.on("error", () => {
+    // Best-effort restart; ignore failures (e.g. missing launchctl, invalid label).
+  });
   child.unref();
 }