The oasis_profile_generator.py system prompt, both user-message
templates (individual + group personas), the context-builder section
labels embedded into the prompt context, the fallback persona templates,
and the per-batch console output banners were all written in Chinese.
Even when Accept-Language was en, the Chinese base prompt and embedded
section labels biased the LLM toward Chinese persona output.
Translate every owned prompt-assembly literal to English while
preserving all functional contracts: f-string interpolations, the
required JSON output keys, the gender/age literal-token rules, the
get_language_instruction() postfix call sites, the _normalize_gender
mapping (which still accepts Chinese gender keys from upstream),
and the rule-based country: "中国" data default. Logger calls,
docstrings, and inline comments are out of scope (issues #6 / #7)
and were not touched.
Closes#25