removed formatter for rules

common/proto/table_validation.proto

@@ -13,7 +13,7 @@ package komp_ac.table_validation;
 //
 // Important split:
 // - limits / pattern / allowed_values / required are validation rules.
-// - mask / formatter are presentation and input-shaping metadata for clients.
+// - mask is presentation and input-shaping metadata for clients.
 
 // Request validation rules for a table
 message GetTableValidationRequest {
@@ -44,9 +44,6 @@ message FieldValidation {
   // Client-side hint that this field participates in external/asynchronous validation UI.
   bool external_validation_enabled = 13;
 
-  // Client-side formatter metadata. This is intentionally data-only, not executable code.
-  optional CustomFormatter formatter = 14;
-
   // Client-side display mask metadata. The server stores raw data without mask literals.
   DisplayMask mask = 3;
 
@@ -139,22 +136,6 @@ message PatternRule {
   CharacterConstraint constraint = 2;
 }
 
-// Client-side formatter metadata.
-// The formatter "type" is intended to be resolved by a client-side formatter registry.
-message CustomFormatter {
-  // Formatter type identifier; handled client‑side.
-  // Examples: "PSCFormatter", "PhoneFormatter", "CreditCardFormatter", "DateFormatter"
-  string type = 1;
-
-  repeated FormatterOption options = 2;
-  optional string description = 3;
-}
-
-message FormatterOption {
-  string key = 1;
-  string value = 2;
-}
-
 // Exact-value whitelist configuration.
 // This maps to canvas AllowedValues semantics.
 message AllowedValues {