docs: add 2026-2027 seasonal family budgeting calendar

SEASONAL_UPDATES_2026.md

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+# 📅 2026–2027 Saudi Family Seasonal Budgeting Calendar
+
+![UsrahOne Seasonal Household Planning](https://files.catbox.moe/4rm8ax.jpg)
+
+A structured 12-month planning calendar designed to help Saudi and GCC families anticipate major household expenses without straining monthly cash flow.
+
+---
+
+## 🍂 Q4 (October – December): Winter Home Readiness & Annual Review
+- **November Home Refresh**: Rearrange living areas for winter gatherings, inspect window weather-stripping, and audit small heating appliances for safety compliance.
+- **December Energy & Warmth Audit**: Prioritize multi-layer wool and cotton bedding over high-wattage space heaters, and review annual bank statements to cancel unused digital subscriptions.
+
+## 🌸 Q1 (January – March): Mid-Year School Reset & Ramadan Preparation
+- **January Academic Routine**: Set up distraction-free study desks with proper lighting and break weekly school goals into manageable daily checklists.
+- **February Kitchen Optimization**: Audit pantry staples (lentils, oats, whole grains, cooking oils) and service kitchen appliances three weeks ahead of Ramadan to prevent peak-season impulse spending.
+- **March Mindful Ramadan Budgeting**: Plan weekly Iftar menus around balanced nutrition and zero food waste, separating essential grocery budgets from Eid hospitality funds.
+
+## ☀️ Q2 & Q3 (April – September): Eid Hospitality, Summer Activities & Back-to-School
+- **Eid & Summer Break**: Schedule indoor creative crafts, reading challenges, and early-booking family travel windows.
+- **August Back-to-School**: Inventory existing stationery, backpacks, and uniforms at home before shopping for the new academic year.