added MaU section with projection

src/routes/global/+page.server.ts

@@ -56,6 +56,12 @@ export const load: PageServerLoad = async () => {
 		.from(dailyCompletions)
 		.where(gte(dailyCompletions.date, sevenDaysAgo));
 
+	const thirtyDaysAgo = estDateStr(30);
+	const [{ monthlyPlayers }] = await db
+		.select({ monthlyPlayers: countDistinct(dailyCompletions.anonymousId) })
+		.from(dailyCompletions)
+		.where(gte(dailyCompletions.date, thirtyDaysAgo));
+
 	const todayPlayers = await db
 		.selectDistinct({ id: dailyCompletions.anonymousId })
 		.from(dailyCompletions)
@@ -347,6 +353,96 @@ export const load: PageServerLoad = async () => {
 
 	const avgWau = Math.round(wauWeeks.reduce((sum, w) => sum + w.wau, 0) / wauWeeks.length);
 
+	// ── Monthly Active Users history (6 months) ───────────────────────────────
+
+	const sixMonthsAgo = estDateStr(185);
+	const mauCompletions = await db
+		.select({ anonymousId: dailyCompletions.anonymousId, date: dailyCompletions.date })
+		.from(dailyCompletions)
+		.where(gte(dailyCompletions.date, sixMonthsAgo));
+
+	// Rolling 30-day windows
+	const mauMonths: { monthStart: string; monthEnd: string; mau: number; changePct: number | null }[] = [];
+	for (let m = 0; m < 6; m++) {
+		const monthEnd = estDateStr(m * 30);
+		const monthStart = estDateStr(m * 30 + 29);
+		const users = new Set<string>();
+		for (const row of mauCompletions) {
+			if (row.date >= monthStart && row.date <= monthEnd) {
+				users.add(row.anonymousId);
+			}
+		}
+		mauMonths.push({ monthStart, monthEnd, mau: users.size, changePct: null });
+	}
+	for (let i = 0; i < mauMonths.length - 1; i++) {
+		const prev = mauMonths[i + 1].mau;
+		if (prev > 0) {
+			mauMonths[i].changePct = Math.round(((mauMonths[i].mau - prev) / prev) * 1000) / 10;
+		}
+	}
+
+	// Calendar month windows
+	const MONTH_NAMES = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
+	const [todayYear, todayMonth, todayDay] = todayEst.split('-').map(Number);
+
+	const calendarMauMonths: {
+		label: string;
+		monthStart: string;
+		monthEnd: string;
+		mau: number;
+		daysElapsed: number;
+		daysInMonth: number;
+		projectedMau: number | null;
+		changePct: number | null;
+		isCurrentMonth: boolean;
+	}[] = [];
+
+	for (let i = 0; i < 6; i++) {
+		let mo = todayMonth - i;
+		let yr = todayYear;
+		if (mo <= 0) { mo += 12; yr--; }
+
+		// new Date(yr, mo, 0) gives last day of month mo (1-indexed) in local time
+		const daysInMonth = new Date(yr, mo, 0).getDate();
+		const monthStart = `${yr}-${String(mo).padStart(2, '0')}-01`;
+		const monthEnd = `${yr}-${String(mo).padStart(2, '0')}-${String(daysInMonth).padStart(2, '0')}`;
+		const isCurrentMonth = i === 0;
+		const daysElapsed = isCurrentMonth ? todayDay : daysInMonth;
+		const queryEnd = isCurrentMonth ? todayEst : monthEnd;
+
+		const users = new Set<string>();
+		for (const row of mauCompletions) {
+			if (row.date >= monthStart && row.date <= queryEnd) {
+				users.add(row.anonymousId);
+			}
+		}
+
+		const projectedMau = isCurrentMonth && daysElapsed > 0
+			? Math.round(users.size * (daysInMonth / daysElapsed))
+			: null;
+
+		calendarMauMonths.push({
+			label: `${MONTH_NAMES[mo - 1]} ${yr}`,
+			monthStart,
+			monthEnd,
+			mau: users.size,
+			daysElapsed,
+			daysInMonth,
+			projectedMau,
+			changePct: null,
+			isCurrentMonth
+		});
+	}
+
+	for (let i = 0; i < calendarMauMonths.length - 1; i++) {
+		const curr = calendarMauMonths[i];
+		const prev = calendarMauMonths[i + 1];
+		if (prev.mau > 0) {
+			const compareVal = curr.projectedMau ?? curr.mau;
+			curr.changePct = Math.round(((compareVal - prev.mau) / prev.mau) * 1000) / 10;
+		}
+	}
+
 	return {
 		todayEst,
 		sessionDepthCards,
@@ -358,7 +454,7 @@ export const load: PageServerLoad = async () => {
 			activeStreaks,
 			avgGuessesToday,
 			registeredUsers,
-			avgCompletionsPerPlayer
+			monthlyPlayers
 		},
 		growth: {
 			completionsVelocity,
@@ -381,6 +477,8 @@ export const load: PageServerLoad = async () => {
 			change: returnRateChange
 		},
 		wauWeeks,
-		avgWau
+		avgWau,
+		mauMonths,
+		calendarMauMonths
 	};
 };