From dbb302f765ff48e4c10038af1fcc1c4e225a6d36 Mon Sep 17 00:00:00 2001
From: sjat <sjat@fisi.nyumbani.baobab.band>
Date: Mon, 8 Jun 2026 22:50:30 +0200
Subject: [PATCH] fix: guard alignment input against numeric-field editing and
 calibration clicks

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 src/app/alignment-ui.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/app/alignment-ui.ts b/src/app/alignment-ui.ts
index e891ce2..dd5d437 100644
--- a/src/app/alignment-ui.ts
+++ b/src/app/alignment-ui.ts
@@ -63,6 +63,8 @@ export function mountAlignment(deps: AlignmentDeps): void {
   overlay.addEventListener('mousedown', (ev) => {
     const H = deps.getHomography();
     if (!H) return;
+    // Another module (e.g. calibration) has armed the overlay for this click; don't hijack it.
+    if (!armOrigin && overlay.classList.contains('interactive')) return;
     if (armOrigin) {
       const a = deps.getAlignment();
       const m = imageToMachine(H, normFromEvent(overlay, ev));
@@ -98,11 +100,13 @@ export function mountAlignment(deps: AlignmentDeps): void {
   });
 
   window.addEventListener('mouseup', () => {
+    if (!dragging) return; // only release the overlay if THIS module was dragging
     dragging = false;
     overlay.classList.remove('interactive');
   });
 
   window.addEventListener('keydown', (ev) => {
+    if (document.activeElement instanceof HTMLInputElement) return;
     const a = deps.getAlignment();
     const step = 1;
     if (ev.key === 'ArrowLeft') a.tx -= step;