Fix scripture verse popup clipped by overflow:hidden parents; v1.2.2

Switch from position:absolute (relative to trigger) to position:fixed
with getBoundingClientRect() so the popup escapes any overflow:hidden
ancestor. Also closes on scroll and window resize.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/App.css

@@ -8865,10 +8865,8 @@
 }
 
 .scripture-popup {
-  position: absolute;
-  bottom: calc(100% + 8px);
-  left: 0;
-  z-index: 200;
+  position: fixed;
+  z-index: 1000;
   display: flex;
   flex-direction: column;
   gap: 0.5rem;