feat: restore legacy named playlist workflows

Web/overseas-workflow.js

@@ -13,7 +13,12 @@
   const MAXIMUM_QUERY_LENGTH = 64;
   const SCHEMA_VERSION = 1;
   const identifierPattern = /^[A-Za-z0-9_-]{1,128}$/;
-  const symbolPattern = /^[A-Za-z0-9@._$:-]{1,64}$/;
+  // F_SYMB is provider identity data, not executable syntax. Current Oracle
+  // contains Hangul-letter symbols with internal ASCII spaces; keep letters and
+  // numbers Unicode-aware and allow only that observed space plus a closed
+  // punctuation set. Canonical trim and this pattern still exclude edge space,
+  // `|`, `^`, controls and arbitrary punctuation from the dataCode identity.
+  const symbolPattern = /^[\p{L}\p{N}@._$:\x20-]{1,64}$/u;
   const unsafeTextPattern = /[\p{Cc}\p{Cf}\p{Cs}\p{Zl}\p{Zp}\uFFFD]/u;
 
   const bridgeContracts = Object.freeze({