fix(bridge): portable killSelf for win32 cross builds; build whole bridge package

The win32 release legs failed to compile: the orphan watchdog used
syscall.Kill/syscall.SIGKILL, which do not exist on Windows. Split into
build-tagged killSelf (SIGKILL on Unix, TerminateProcess via
os.Process.Kill on Windows). build-bridge.js now builds the bridge
package ('.') instead of the single bridge.go file so the platform-
split files are included — the previous single-file build worked only
because everything lived in bridge.go.

Also anchor the root .gitignore 'bridge/' rule to /typescript-go/bridge/
— it was shadowing patches/typescript-go/overlay/bridge/ sources.

darwin-x64 leg in the same run was not hung, just queued on macos-13
runner scarcity.

Author: johnsoncodehk

.gitignore

@@ -5,4 +5,4 @@ node_modules/
 lib/
 native/
 vendor/
-bridge/
+/typescript-go/bridge/

patches/typescript-go/overlay/bridge/bridge.go

@@ -34,7 +34,6 @@ import (
 	"strconv"
 	"strings"
 	"sync"
-	"syscall"
 	"time"
 	"unsafe"
 
@@ -165,10 +164,11 @@ func startOrphanWatchdog() {
 			for {
 				time.Sleep(2 * time.Second)
 				if os.Getppid() == 1 {
-					// Parent died. SIGKILL ourselves: skips Node's atexit
+					// Parent died. Hard-kill ourselves: skips Node's atexit
 					// (ResetStdio) entirely, so the storm can never re-arm,
-					// and the OS reclaims all session memory.
-					_ = syscall.Kill(os.Getpid(), syscall.SIGKILL)
+					// and the OS reclaims all session memory. killSelf is
+					// platform-split (syscall.Kill is Unix-only).
+					killSelf()
 				}
 			}
 		}()

patches/typescript-go/overlay/bridge/killself_unix.go

@@ -0,0 +1,13 @@
+//go:build !windows
+
+package main
+
+import (
+	"os"
+	"syscall"
+)
+
+// killSelf hard-kills this process, skipping Node's atexit (ResetStdio).
+func killSelf() {
+	_ = syscall.Kill(os.Getpid(), syscall.SIGKILL)
+}

patches/typescript-go/overlay/bridge/killself_windows.go

@@ -0,0 +1,13 @@
+//go:build windows
+
+package main
+
+import "os"
+
+// killSelf hard-kills this process (TerminateProcess on Windows — syscall.Kill
+// does not exist there). Same intent as the Unix SIGKILL path: skip atexit.
+func killSelf() {
+	if p, err := os.FindProcess(os.Getpid()); err == nil {
+		_ = p.Kill()
+	}
+}

tools/build-bridge.js

@@ -19,7 +19,9 @@ fs.mkdirSync(nativeDir, { recursive: true });
 const args = ["build", "-tags=noembed", "-buildmode=c-shared"];
 // TNB_STRIP=1: drop debug symbols for shipped binaries (release matrix).
 if (process.env.TNB_STRIP === "1") args.push("-ldflags=-s -w");
-args.push("-o", outPath, "bridge.go");
+// Build the package (not just bridge.go) so platform-split files
+// (killself_unix.go / killself_windows.go) are included.
+args.push("-o", outPath, ".");
 
 const r = spawnSync("go", args, { cwd: bridgeDir, stdio: "inherit" });
 if (r.status !== 0) process.exit(r.status ?? 1);