libSceTtsCoreG3Bc technical debt

Additional callable exports - 18 entries present in both version-labelled images are import-resolution declarations only. A public 3.20 catalogue for this library was not verified. Neither label independently authenticates retail firmware provenance. Parameter lists, return types and behavior are unverified; parameterless int declarations are placeholders, not verified ABI contracts. Every entry throws through NotImplemented_nid_no_patch. Unidentified names use literal NID aliases. No runtime functionality is implemented. Identified candidate names match their NIDs in the public symbol database or supplemental catalog.