bring in khatru and eventstore.

eventstore/internal/binary/cmd/decode-binary/.gitignore

@@ -0,0 +1 @@
+decode-binary

eventstore/internal/binary/cmd/decode-binary/main.go

@@ -0,0 +1,39 @@
+package main
+
+import (
+	"bytes"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"os"
+
+	"github.com/fiatjaf/eventstore/internal/binary"
+	"github.com/nbd-wtf/go-nostr"
+)
+
+func main() {
+	b, err := io.ReadAll(os.Stdin)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "failed to read from stdin: %s\n", err)
+		os.Exit(1)
+		return
+	}
+	b = bytes.TrimSpace(b)
+
+	if bytes.HasPrefix(b, []byte("0x")) {
+		fromHex := make([]byte, (len(b)-2)/2)
+		_, err := hex.Decode(fromHex, b[2:])
+		if err == nil {
+			b = fromHex
+		}
+	}
+
+	var evt nostr.Event
+	err = binary.Unmarshal(b, &evt)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "failed to decode: %s\n", err)
+		os.Exit(1)
+		return
+	}
+	fmt.Println(evt.String())
+}