feat: rebrand AgendaPro -> AgendaMax + calendar fixes + current-week demo seed

- Rebrand all user-facing text to AgendaMax
- Fix sidebar scrolling: card container no longer overflows html (flex h-full min-h-0)
- Fix calendar toolbar hover: active buttons keep readable contrast
- Sticky calendar toolbar (month/week/day always visible on scroll)
- Seed guarantees 2-4 appointments per day for current week (Mon-Sat)

server/routes/notifications.ts

@@ -2,6 +2,7 @@ import { Router } from "express";
 import { db } from "../db.ts";
 import type { AuthedRequest } from "../lib/auth.ts";
 import { err } from "../lib/auth.ts";
+import { bizDayBoundsSqlite } from "../lib/time.ts";
 
 export const notificationsRouter = Router();
 
@@ -30,7 +31,10 @@ function buildMessage(biz: any, appt: any, kind: string): string {
 export function scheduleReminders(businessId: number) {
   const biz = db.prepare(`SELECT * FROM businesses WHERE id = ?`).get(businessId) as any;
   if (!biz) return;
-  // upcoming scheduled appointments in next 7 days
+  // upcoming scheduled appointments in next 7 days (UTC instants — the window is
+  // instant-relative, so we bind clean UTC values instead of SQLite's date('now')).
+  const nowUtc = new Date().toISOString().slice(0, 19) + "Z";
+  const plus7Utc = new Date(Date.now() + 7 * 86400000).toISOString().slice(0, 19) + "Z";
   const appts = db
     .prepare(
       `SELECT a.id, a.start_at, a.status, a.client_id, c.name client_name, c.phone, c.email,
@@ -40,10 +44,10 @@ export function scheduleReminders(businessId: number) {
        JOIN services s ON s.id = a.service_id
        LEFT JOIN employees e ON e.id = a.employee_id
        WHERE a.business_id = ? AND a.status = 'scheduled'
-         AND a.start_at >= datetime('now') AND a.start_at <= datetime('now','+7 days')
+          AND a.start_at >= ? AND a.start_at <= ?
        ORDER BY a.start_at ASC`
     )
-    .all(businessId) as any[];
+    .all(businessId, nowUtc, plus7Utc) as any[];
   // delete pending reminders that no longer have a matching upcoming scheduled appt
   db.prepare(
     `DELETE FROM notifications WHERE business_id = ? AND status = 'pending' AND kind IN ('reminder','confirmation')`
@@ -133,7 +137,12 @@ notificationsRouter.post("/:id/cancel", (req: AuthedRequest, res) => {
 
 notificationsRouter.get("/stats", (req: AuthedRequest, res) => {
   const bid = req.user!.business_id as number;
-  const scalar = (sql: string) => (db.prepare(sql).get(bid) as any)?.v ?? 0;
+  const tz =
+    (db.prepare(`SELECT timezone t FROM businesses WHERE id = ?`).get(bid) as { t?: string } | undefined)?.t ||
+    "America/Mexico_City";
+  // tz-correct 30-day window (business-local). created_at is mixed-format, so wrap with datetime().
+  const since30 = bizDayBoundsSqlite(tz, -30).start;
+  const scalar = (sql: string, ...args: any[]) => (db.prepare(sql).get(bid, ...args) as any)?.v ?? 0;
   res.json({
     pending: scalar(`SELECT COUNT(*) v FROM notifications WHERE business_id = ? AND status='pending'`),
     sent: scalar(`SELECT COUNT(*) v FROM notifications WHERE business_id = ? AND status='sent'`),
@@ -141,7 +150,9 @@ notificationsRouter.get("/stats", (req: AuthedRequest, res) => {
       `SELECT COUNT(*) v FROM notifications WHERE business_id = ? AND status='pending' AND kind='reminder' AND send_at >= datetime('now')`
     ),
     no_show_rate: scalar(
-      `SELECT COALESCE(ROUND(100.0 * SUM(CASE WHEN status='no_show' THEN 1 ELSE 0 END) / NULLIF(COUNT(*),0),1),0) v FROM appointments WHERE business_id = ? AND created_at >= datetime('now','-30 days')`
+      `SELECT COALESCE(ROUND(100.0 * SUM(CASE WHEN status='no_show' THEN 1 ELSE 0 END) / NULLIF(COUNT(*),0),1),0) v
+       FROM appointments WHERE business_id = ? AND datetime(created_at) >= ?`,
+      since30
     ),
   });
 });