6fd110b4ce
Three indicator pages get a short follow-up paragraph that surfaces an internal implementation detail the audit findings made user-visible: - `Indicator-LinearRegression.md` gains a "Complexity" section explaining the O(1) update (precomputed `Σx`, `Σxx`; incrementally slid `Σy`, `Σxy` via the closed-form sliding identity), and the existing "Reset" bullet mentions the additional running accumulators. The same story applies to `LinRegSlope` and `LinRegAngle` (the page now links to both rather than repeating the derivation three times). - `Indicator-Sma.md` and `Indicator-BollingerBands.md` mention the periodic reseed (`16 · period` updates) that caps floating-point drift on long-running streams. Amortised cost is still O(1) and the user-facing behaviour on benign inputs is unchanged. No behavioural claim, no API claim, no example changes — just narrative catching up with the implementation.