chore(oss): audit the server package and resync the SDK mirrors

Split the 657-line operation service into eor, submit, and verify
modules, add the AGENT_REVOKED and KEY_RETIRED codes the Backend already
emits, and condense every multi-line comment. Mirror Node, Python, and
Go at 2.1.0 with the deep-health 503, non-idempotent retry, rotation
grace, and path-encoding fixes. Document which routes and response
fields the self-hosted server does not provide.

Claude-Session: https://claude.ai/code/session_01Agoc9bRVE9KL7mmWtey9Vq

sdks/go/cmd/elydora/plugins/jsonc.go

@@ -17,15 +17,6 @@ type jsoncEditor struct {
 	label  string
 }
 
-func standardizeJSONC(source []byte, label string, allowTrailingCommas bool) ([]byte, error) {
-	value, err := parseJSONC(source, label, allowTrailingCommas)
-	if err != nil {
-		return nil, err
-	}
-	value.Standardize()
-	return value.Pack(), nil
-}
-
 func parseJSONC(source []byte, label string, allowTrailingCommas bool) (hujson.Value, error) {
 	value, err := hujson.Parse(source)
 	if err != nil {
@@ -97,6 +88,16 @@ func rejectDuplicateJSONCKeys(value *hujson.Value, label, location string) error
 	return nil
 }
 
+func decodeStrictJSONObject(source []byte, label string) (map[string]any, error) {
+	if !json.Valid(source) {
+		var value any
+		if err := json.Unmarshal(source, &value); err != nil {
+			return nil, fmt.Errorf("parse %s: %w", label, err)
+		}
+	}
+	return decodeJSONCObject(source, label, false)
+}
+
 func decodeJSONCObject(source []byte, label string, allowTrailingCommas bool) (map[string]any, error) {
 	value, err := parseJSONC(source, label, allowTrailingCommas)
 	if err != nil {
@@ -292,3 +293,11 @@ func jsonPointer(path []any) string {
 	}
 	return pointer.String()
 }
+
+func cloneJSONObject(value map[string]any) map[string]any {
+	clone := make(map[string]any, len(value))
+	for key, item := range value {
+		clone[key] = item
+	}
+	return clone
+}