openrouter.py was 790 lines mixing two orthogonal concerns:
- Prompt engineering (build_system_prompt, build_summary_*,
build_chat_*, build_daily_digest_*, etc.) — ~400 lines, changes
weekly as PROMPT_VERSION bumps
- LLM transport (call_llm, _provider_chain, _call_provider, retry
+ fallback machinery) — ~250 lines, rarely changes
Extracted the prompt-engineering surface to app/services/llm_prompts.py.
Transport stays in openrouter.py (consistent with the filename — the
OpenRouter URL is the transport's anchor).
All import sites (jobs, routers, services, tests) split their
multi-import lines into two: prompt-things from llm_prompts, transport
from openrouter. PROMPT_VERSION constant, _TONE_ALIASES, _resolve_tone,
and SYSTEM_PROMPT moved with the prompt functions.
No behaviour change — pure relocation. Function signatures, body, and
naming all preserved.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
