feat(maintain-analytics): OLS trend forecast — rising / cooling / steady + next-week prediction#83
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…t loop rising, cooling, or steady?
Adds forecastTrend(runs, nowMs, weeks): fits an ordinary-least-squares line to the weekly
opened-cleanups series and predicts next week — a stronger, honest signal than the naive
last-28-days count. Reports {weeklyAvg, slope, direction: rising|falling|steady, nextWeek}.
- maintain-stats.ts: forecastTrend (PURE, unit-tested — rising / steady-on-empty / cooling).
- dashboard: "Trend forecast" line (rising ↑ / cooling ↓ / steady → · avg ~N/wk · next week ≈ M).
- qodex maintain-report: same Forecast line under the 8-week sparkline.
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Strengthens the Maintain analytics with a real forecast, not just a naive rate.
forecastTrend(runs, nowMs, weeks)fits an ordinary-least-squares line to the weekly opened-cleanups series and predicts next week. It answers a question the last-28-days count can't: is the self-improvement loop accelerating, cooling off, or holding steady?Returns
{ weeklyAvg, slope, direction: rising | falling | steady, nextWeek }— and stays honest: a flat/empty history issteadywithnextWeek: 0, no invented momentum.maintain-stats.ts:forecastTrend(PURE, +3 tests — rising / steady-on-empty / cooling)rising ↑/cooling ↓/steady →· avg ~N/wk · next week ≈ M)qodex maintain-report: same Forecast line under the sparklineFull suite 1443 green, tsc clean.