megaproxy
4572621f5d
Replaces unused Prophet dependency (unrunnable without cmdstan) with SARIMA (statsmodels SARIMAX) as the primary spending forecast algorithm. Strategy: SARIMA(1,1,1)(1,0,1,12) for 12+ months of data, ARIMA(1,1,1) for 6-11 months, Holt-Winters for 3-5 months, simple average below that. Adds 95% confidence bands (1.96σ) alongside existing 80% (1.28σ). Extends forecast horizon from 3 to 6 months and actuals display from 6 to 12 months. Each category now carries an algorithm field surfaced as a badge in the UI. Frontend chart shows both confidence tiers as stacked bar overlays with a 3-month summary grid below. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> |
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