shark expose: put a local port on the internet through Hammerhead

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

cmd/shark/main.go

@@ -0,0 +1,21 @@
+// shark exposes a local port through your own Hammerhead and Blacktip, like ngrok.
+package main
+
+import (
+	"context"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"git.veillax.com/Veillax/shark-expose/internal/cli"
+)
+
+// version is set at build time (-ldflags "-X main.version=...").
+var version = "dev"
+
+func main() {
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer stop()
+	cli.Version = version
+	os.Exit(cli.Run(ctx, os.Args[1:], os.Stdout, os.Stderr))
+}