Migrate package imports from next.orly.dev to new orly domain structure; add new varint and binary encoders with comprehensive tests; enhance existing tag and envelope implementations with additional methods, validations, and test coverage; introduce shared test.sh script for streamlined testing across modules.

pkg/crypto/ec/chainhash/hashfuncs.go

@@ -6,7 +6,7 @@
 package chainhash
 
 import (
-	"next.orly.dev/pkg/crypto/sha256"
+	"crypto.orly/sha256"
 )
 
 // HashB calculates hash(b) and returns the resulting bytes.