Update Go workflow to include libsecp256k1 for tests and bump version to v0.25.5

- Modified the CI workflow to copy the `libsecp256k1.so` file to the root directory for test accessibility.
- Enhanced the `InitPub` method in the `FallbackSigner` to parse the x-only public key for verification.
- Bumped version to v0.25.6 to reflect these updates.

.github/workflows/go.yml

@@ -36,7 +36,10 @@ jobs:
         run: CGO_ENABLED=0 go build -v ./...
 
       - name: Test (Pure Go + purego)
-        run: CGO_ENABLED=0 go test -v $(go list ./... | xargs -n1 sh -c 'ls $0/*_test.go 1>/dev/null 2>&1 && echo $0' | grep .)
+        run: |
+          # Copy the libsecp256k1.so to root directory so tests can find it
+          cp pkg/crypto/p8k/libsecp256k1.so .
+          CGO_ENABLED=0 go test -v $(go list ./... | xargs -n1 sh -c 'ls $0/*_test.go 1>/dev/null 2>&1 && echo $0' | grep .)
   release:
     needs: build
     runs-on: ubuntu-latest

pkg/interfaces/signer/p8k/p8k.go

@@ -362,6 +362,11 @@ func (s *FallbackSigner) InitPub(pub []byte) (err error) {
 	s.xonlyPub = make([]byte, 32)
 	copy(s.xonlyPub, pub)
 
+	// Parse the x-only public key into a full public key for verification
+	if s.pubKey, err = schnorr.ParsePubKey(pub); err != nil {
+		return errorf.E("failed to parse public key: %w", err)
+	}
+
 	return nil
 }
 

pkg/version/version

@@ -1 +1 @@
-v0.25.4
+v0.25.6