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Wire (Cu/Al ПЭТВ-2), capacitors (350-450V electrolytic bank), switches (КУ202Н/BT151 SCR, IRFP250/IRFP4468 MOSFET, IRG4PC50F IGBT), sensors (A3144E Hall, TCST2103 optical, LM393-based inductive pickup), and projectile materials (Ст3, Сталь 10, армко-железо) sourced from procontact74.ru/chipdip.ru/cable.ru research. Every entry's `source` field states plainly whether the number is a REAL scraped retail price/spec (with URL) or an ОЦЕНКА (estimate) with its basis (e.g. aluminum magnet wire has no self-service retail price in RU stores, so it's priced as a fraction of equivalent copper) — no value is presented as real when it isn't. Added a smoke test proving the real database runs end-to-end through the full physics + chaining pipeline, not just against synthetic test fixtures. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>