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/interfaces/store/errors.go

@@ -0,0 +1,8 @@
+package store
+
+import "errors"
+
+var (
+	ErrDupEvent       = errors.New("duplicate: event already exists")
+	ErrEventNotExists = errors.New("unknown: event not known by any source of this realy")
+)