From 2a841b9779109cff4df43c882b6f1f87e4f87a94 Mon Sep 17 00:00:00 2001
From: Emil Lerch <emil@lerch.org>
Date: Fri, 2 Jan 2026 15:06:55 -0800
Subject: [PATCH] add todo item to README

---
 README.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/README.md b/README.md
index d1fe49c..f509d8f 100644
--- a/README.md
+++ b/README.md
@@ -47,6 +47,12 @@ This directory contains comprehensive documentation for rewriting wttr.in in Zig
    - Based on location coordinates and timezone
    - Display in custom format output
 
+7. **Online GeoIP Fallback**
+   - When local GeoIP database lookup fails, fallback to online service
+   - Requires API key configuration
+   - Persistent cache for online lookup results
+   - Legacy system uses ip2location or similar service
+
 ## Documentation Files
 
 ### [TARGET_ARCHITECTURE.md](TARGET_ARCHITECTURE.md) ⭐ NEW