refactor: consolidate coercion contracts (#122458)

* refactor: consolidate coercion contracts

Centralize exact string, record, numeric, date, Boolean, argument, and structured-error coercions while preserving call-site semantics.

Migrate canonical-name collisions and deprecated internal SDK bypasses, deleting 55 net production/tooling lines. Expand declaration ownership enforcement to 101 allowed helpers and add a narrow export-completeness audit.

* fix: preserve standalone script coercions

Keep copied Control UI tooling self-contained and retain the trusted release harness module-relative source seam when the harness runs against an old target cwd.

packages/gateway-protocol/src/connect-error-details.ts

@@ -6,7 +6,7 @@
  */
 import { normalizeOptionalProtocolString } from "./protocol-value-normalization.js";
 
-function normalizeArrayBackedTrimmedStringList(value: unknown): string[] | undefined {
+function normalizeOptionalConnectDetailStringList(value: unknown): string[] | undefined {
   if (!Array.isArray(value)) {
     return undefined;
   }
@@ -266,7 +266,7 @@ export function normalizePairingConnectRequestId(value: unknown): string | undef
 }
 
 function normalizeStringArray(value: unknown): string[] | undefined {
-  return normalizeArrayBackedTrimmedStringList(value);
+  return normalizeOptionalConnectDetailStringList(value);
 }
 
 function createPairingConnectErrorDetails(params: {