feat(factor): te_thailand rate/credit/retail/property/confidence + thai_trade external sector; fix sign inversion on bearish factors
- add te_thailand collector (TradingEconomics) -> 8 factors: interest rate,
business loan growth, consumer credit, household debt/GDP, retail sales YoY,
consumer confidence, residential property prices, business confidence;
feed banks/retail/consumer_staples/nonbank_finance/property/telecom/healthcare
- add thai_trade collector (TradingEconomics external sector) -> exports/
imports/current-account factors (concurrent in-tree work, verified green)
- fix sign inversion: theme weights were negative on sign:-1 factors (NPL,
inflation, unemployment) so higher NPL/inflation RAISED scores; direction now
lives only in factor sign, theme weights positive (regression-locked)
- tests: te_thailand parse+direction, value-key resolution contract, dashboard
8-sources, scheduler vintage counts; suite 362 OK
fcc0da9c8d