Add Gemini-native judge compatibility to eval harness

Clean license and corpus header metadata in WildTrace strict481

Clean WildTrace strict481 public release

Clarify license scope: CC-BY covers annotations/scripts only; source texts retain PD/§105/Project-Gutenberg terms + US-jurisdiction note

Add per-source provenance manifest (PD/§105/PG basis per corpus file)

Release WildTrace strict481 public package

initial commit