translate the three llm prompt blocks plus the two prompt-feeding helpers
(_build_context, _summarize_entities) in
backend/app/services/simulation_config_generator.py from chinese to english.
the chinese base prompts were biasing the model toward chinese structure
and lexical choice for content, narrative_direction, hot_topics, and
reasoning fields even when accept-language was en, because
get_language_instruction() only steers the response language as a
postfix.
translation is in-place and preserves every functional contract: the
json output schema for all three prompts, every variable interpolation,
the per-entity-type heuristic ranges in the agent-config prompt, the
trailing english IMPORTANT directives that lock poster_type to
PascalCase and stance to {supportive,opposing,neutral,observer}, and
all three get_language_instruction() postfix call sites. the two
default-path reasoning literals are translated to locale-agnostic
english so generation_reasoning no longer mixes chinese and english on
the failure path.
logger calls, docstrings, and inline comments are intentionally left
chinese (out of scope; covered by issues #6 and #7). public api,
dataclasses, class constants, and the SimulationParameters payload
shape are unchanged.
Closes#4
6c2a412196