feat(photos): adaptive aspect ratio per entry (portrait 4:5, landscape 4:3)

Portrait entries (first image taller than wide) get a 4:5 container —
Instagram's proven cap that prevents single photos dominating the screen.
Landscape entries keep 4:3. Aspect-ratio moved from slide to wrap so the
strip inherits it via height:100%.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Vgmzx8VTTTmCskSpQtsLTr

themes/intotheeast/css/style.css

@@ -207,6 +207,7 @@ body::after {
     margin-bottom: var(--space-5);
     border-radius: var(--radius-md);
     overflow: hidden;
+    aspect-ratio: 4 / 3;
 }
 
 .journal-photo-strip {
@@ -214,6 +215,7 @@ body::after {
     overflow-x: scroll;
     scroll-snap-type: x mandatory;
     scrollbar-width: none;
+    height: 100%;
 }
 
 .journal-photo-strip::-webkit-scrollbar { display: none; }
@@ -221,7 +223,6 @@ body::after {
 .journal-photo-slide {
     flex: 0 0 100%;
     scroll-snap-align: start;
-    aspect-ratio: 4 / 3;
     overflow: hidden;
     display: block;
     text-decoration: none;