Fix live option guards, grounding operand evidence, source-bound benchmarks, trade artifacts, attribution, drawdowns, valuation tolerances, and SEC point-in-time factor inputs.
Add Brazil research data and market support, 13 fundamental and valuation factors, channel progress forwarding, and opt-in ZimaOS templates. Update seven README News sections with three visible dates.
Validation: 17,635 backend tests passed; 1,084 final targeted tests and 103 frontend tests passed. Frontend build, package build, documentation checks, and CI gates passed.
