Kunthawat Greethong 5b8a10c730 refactor(siamchart): momentum is a first-class factor INSIDE the score formula (owner rule) ...

Owner: momentum must enter the formula (a factor), not be bolted on outside it.
- Single declarative source _SIAMCHART_WEIGHTS = {eps_growth:1.5, dividend_yield:2.0, momentum:0.5}.
- New siamchart_raw_score(g,d,m) = single source of the formula; momentum is an
  explicit term inside it. All 3 call sites (build_siamchart_score + both
  symbol_breakdown spots) now share it — no duplicated arithmetic.
- Pure refactor: outputs unchanged (weights identical). Tests added for the
  momentum-inside-formula rule + momentum raising the score. Full suite 376 green.

2026-08-31 18:50:32 +07:00

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