From 58ad43c6ea60ef19eac513581f8a87df2576e7dd Mon Sep 17 00:00:00 2001
From: phranck <phranck@phranck.dev>
Date: Fri, 6 Feb 2026 18:14:26 +0100
Subject: [PATCH] Fix: Auto-activate first section and auto-focus first element
 on register

- When first focusable component registers, auto-activate its section
- First element in active section auto-focuses (macOS/SwiftUI behavior)
- Enables Tab navigation between groups from the start
- All 591 tests passing
---
 Sources/TUIkit/Focus/Focus.swift | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Sources/TUIkit/Focus/Focus.swift b/Sources/TUIkit/Focus/Focus.swift
index 132e932..70f1b3a 100644
--- a/Sources/TUIkit/Focus/Focus.swift
+++ b/Sources/TUIkit/Focus/Focus.swift
@@ -168,7 +168,10 @@ public extension FocusManager {
         guard let section = section(id: targetID) else { return }
         section.register(element)
 
-        // Auto-focus first element in the active section
+        // Auto-activate section and auto-focus first element if needed
+        if activeSectionID == nil {
+            activeSectionID = targetID
+        }
         if targetID == activeSectionID && focusedID == nil && element.canBeFocused {
             focus(element)
         }