Refactor crypto package to use p256k1 signer

- Replaced the p256k package with p256k1.mleku.dev/signer across the codebase, updating all instances where the previous signer was utilized.
- Removed the deprecated p256k package, including all related files and tests, to streamline the codebase and improve maintainability.
- Updated various components, including event handling, database interactions, and protocol implementations, to ensure compatibility with the new signer interface.
- Enhanced tests to validate the new signing functionality and ensure robustness across the application.
- Bumped version to v0.23.3 to reflect these changes.

pkg/protocol/auth/nip42_test.go

@@ -5,12 +5,12 @@ import (
 
 	"lol.mleku.dev/chk"
 	"lol.mleku.dev/log"
-	"next.orly.dev/pkg/crypto/p256k"
+	p256k1signer "p256k1.mleku.dev/signer"
 )
 
 func TestCreateUnsigned(t *testing.T) {
 	var err error
-	signer := new(p256k.Signer)
+	signer := p256k1signer.NewP256K1Signer()
 	if err = signer.Generate(); chk.E(err) {
 		t.Fatal(err)
 	}

pkg/protocol/directory/directory_test.go

@@ -7,14 +7,14 @@ import (
 
 	"lol.mleku.dev/chk"
 	"next.orly.dev/pkg/crypto/ec/secp256k1"
-	"next.orly.dev/pkg/crypto/p256k"
+	p256k1signer "p256k1.mleku.dev/signer"
 	"next.orly.dev/pkg/encoders/bech32encoding"
 	"next.orly.dev/pkg/protocol/directory"
 )
 
-// Helper to create a test keypair using p256k.Signer
-func createTestKeypair(t *testing.T) (*p256k.Signer, []byte) {
-	signer := new(p256k.Signer)
+// Helper to create a test keypair using p256k1signer.P256K1Signer
+func createTestKeypair(t *testing.T) (*p256k1signer.P256K1Signer, []byte) {
+	signer := p256k1signer.NewP256K1Signer()
 	if err := signer.Generate(); chk.E(err) {
 		t.Fatalf("failed to generate keypair: %v", err)
 	}

pkg/protocol/nwc/crypto_test.go

@@ -6,7 +6,7 @@ import (
 	"time"
 
 	"next.orly.dev/pkg/crypto/encryption"
-	"next.orly.dev/pkg/crypto/p256k"
+	p256k1signer "p256k1.mleku.dev/signer"
 	"next.orly.dev/pkg/encoders/event"
 	"next.orly.dev/pkg/encoders/hex"
 	"next.orly.dev/pkg/encoders/tag"
@@ -101,7 +101,7 @@ func TestNWCEventCreation(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	clientKey := &p256k.Signer{}
+	clientKey := p256k1signer.NewP256K1Signer()
 	if err := clientKey.InitSec(secretBytes); err != nil {
 		t.Fatal(err)
 	}

pkg/protocol/nwc/mock_wallet_service.go

@@ -10,7 +10,7 @@ import (
 
 	"lol.mleku.dev/chk"
 	"next.orly.dev/pkg/crypto/encryption"
-	"next.orly.dev/pkg/crypto/p256k"
+	p256k1signer "p256k1.mleku.dev/signer"
 	"next.orly.dev/pkg/encoders/event"
 	"next.orly.dev/pkg/encoders/filter"
 	"next.orly.dev/pkg/encoders/hex"
@@ -40,7 +40,7 @@ func NewMockWalletService(
 	relay string, initialBalance int64,
 ) (service *MockWalletService, err error) {
 	// Generate wallet keypair
-	walletKey := &p256k.Signer{}
+	walletKey := p256k1signer.NewP256K1Signer()
 	if err = walletKey.Generate(); chk.E(err) {
 		return
 	}

pkg/protocol/nwc/uri.go

@@ -6,7 +6,8 @@ import (
 
 	"lol.mleku.dev/chk"
 	"next.orly.dev/pkg/crypto/encryption"
-	"next.orly.dev/pkg/crypto/p256k"
+	p256k1signer "p256k1.mleku.dev/signer"
+	"next.orly.dev/pkg/encoders/hex"
 	"next.orly.dev/pkg/interfaces/signer"
 )
 
@@ -41,7 +42,7 @@ func ParseConnectionURI(nwcUri string) (parts *ConnectionParams, err error) {
 		err = errors.New("incorrect scheme")
 		return
 	}
-	if parts.walletPublicKey, err = p256k.HexToBin(p.Host); chk.E(err) {
+	if parts.walletPublicKey, err = hex.Dec(p.Host); chk.E(err) {
 		err = errors.New("invalid public key")
 		return
 	}
@@ -62,11 +63,11 @@ func ParseConnectionURI(nwcUri string) (parts *ConnectionParams, err error) {
 		return
 	}
 	var secretBytes []byte
-	if secretBytes, err = p256k.HexToBin(secret); chk.E(err) {
+	if secretBytes, err = hex.Dec(secret); chk.E(err) {
 		err = errors.New("invalid secret")
 		return
 	}
-	clientKey := &p256k.Signer{}
+	clientKey := p256k1signer.NewP256K1Signer()
 	if err = clientKey.InitSec(secretBytes); chk.E(err) {
 		return
 	}

pkg/protocol/ws/client_test.go

@@ -16,7 +16,7 @@ import (
 	"github.com/stretchr/testify/require"
 	"golang.org/x/net/websocket"
 	"lol.mleku.dev/chk"
-	"next.orly.dev/pkg/crypto/p256k"
+	p256k1signer "p256k1.mleku.dev/signer"
 	"next.orly.dev/pkg/encoders/event"
 	"next.orly.dev/pkg/encoders/filter"
 	"next.orly.dev/pkg/encoders/hex"
@@ -36,7 +36,7 @@ func TestPublish(t *testing.T) {
 		Tags:      tag.NewS(tag.NewFromAny("foo", "bar")),
 		Pubkey:    pub,
 	}
-	sign := &p256k.Signer{}
+	sign := p256k1signer.NewP256K1Signer()
 	var err error
 	if err = sign.InitSec(priv); chk.E(err) {
 	}
@@ -208,7 +208,7 @@ var anyOriginHandshake = func(conf *websocket.Config, r *http.Request) error {
 
 func makeKeyPair(t *testing.T) (sec, pub []byte) {
 	t.Helper()
-	sign := &p256k.Signer{}
+	sign := p256k1signer.NewP256K1Signer()
 	var err error
 	if err = sign.Generate(); chk.E(err) {
 		return