Propagate Hyperlight guest exit code and add e2e test

.github/workflows/hyperlight-e2e.yml

@@ -67,10 +67,10 @@ jobs:
           $pyhlHome = Join-Path $env:LOCALAPPDATA "pyhl"
           New-Item -ItemType Directory -Force -Path $pyhlHome | Out-Null
 
-          .\crane.exe export ghcr.io/danbugs/hyperlight-unikraft/python-agent-driver-kernel:latest kernel.tar
+          .\crane.exe export ghcr.io/hyperlight-dev/hyperlight-unikraft/python-agent-driver-kernel:latest kernel.tar
           tar -xf kernel.tar -C $pyhlHome kernel
 
-          .\crane.exe export ghcr.io/danbugs/hyperlight-unikraft/python-agent-driver-initrd:latest initrd.tar
+          .\crane.exe export ghcr.io/hyperlight-dev/hyperlight-unikraft/python-agent-driver-initrd:latest initrd.tar
           tar -xf initrd.tar -C $pyhlHome initrd.cpio
 
           Write-Host "Downloaded to ${pyhlHome}:"

src/wxc_common/src/hyperlight_runner.rs

@@ -63,8 +63,10 @@
 //!
 //! ## Exit codes
 //!
-//! 0 on clean `run_code` completion, -1 on any error (preflight, install,
-//! runtime, guest crash). The specific failure mode is in `error_message`.
+//! Guest exit code on clean `run_code` completion (0 for normal exit,
+//! non-zero for `sys.exit(N)` or unhandled exceptions), -1 on any
+//! runner error (preflight, install, runtime, guest crash). The specific
+//! failure mode is in `error_message`.
 
 use std::path::{Path, PathBuf};
 
@@ -474,11 +476,11 @@ impl ScriptRunner for HyperlightScriptRunner {
         match rt.run_code(&request.script_code) {
             Ok(timing) => {
                 logger.log_line(&format!(
-                    "hyperlight: run ok (restore={:.1}ms call={:.1}ms)",
-                    timing.restore_ms, timing.call_ms
+                    "hyperlight: run ok (restore={:.1}ms call={:.1}ms exit={})",
+                    timing.restore_ms, timing.call_ms, timing.exit_code
                 ));
                 ScriptResponse {
-                    exit_code: 0,
+                    exit_code: timing.exit_code,
                     ..Default::default()
                 }
             }

src/wxc_e2e_tests/tests/e2e_windows.rs

@@ -596,6 +596,12 @@ fn hyperlight_suite() {
             expected_exit: 0,
             output_contains: Some("'x':"),
         },
+        HyperlightCase {
+            config: "hyperlight_exit_code.json",
+            description: "sys.exit(42) propagates exit code",
+            expected_exit: 42,
+            output_contains: None,
+        },
     ];
 
     let mut failures = Vec::new();

test_configs/hyperlight_exit_code.json

@@ -0,0 +1,7 @@
+{
+    "process": {
+        "commandLine": "import sys; sys.exit(42)",
+        "timeout": 30000
+    },
+    "containment": "hyperlight"
+}