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.

scripts/test-workflow-local.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+# Manual test script for .github/workflows/go.yml
+# This replicates the build job steps locally
+
+set -e
+
+echo "=== Testing GitHub Actions Workflow Locally ==="
+echo ""
+
+# Check Go version
+echo "Checking Go version..."
+go version
+echo ""
+
+# Build without cgo
+echo "Building with cgo disabled..."
+CGO_ENABLED=0 go build -v ./...
+echo ""
+
+# Test without cgo
+echo "Testing with cgo disabled..."
+CGO_ENABLED=0 go test -v $(go list ./... | xargs -n1 sh -c 'ls $0/*_test.go 1>/dev/null 2>&1 && echo $0' | grep .)
+echo ""
+
+echo "=== Build job completed successfully ==="
+