Fix post-feed.html reply composer formatting — add missing .topPostComposerInput CSS rule

The reply composer was missing the CSS rule that gives it visible formatting
(border, padding, min-height, border-radius). Copied the rule from post.html.

www/js/version.json

@@ -1,5 +1,5 @@
 {
-  "VERSION": "v0.7.28",
-  "VERSION_NUMBER": "0.7.28",
-  "BUILD_DATE": "2026-06-26T00:20:10.087Z"
+  "VERSION": "v0.7.29",
+  "VERSION_NUMBER": "0.7.29",
+  "BUILD_DATE": "2026-06-26T00:29:51.222Z"
 }

www/post-feed.html

@@ -109,6 +109,14 @@
       width: 100%;
     }
 
+    .topPostComposerInput {
+      min-height: 6em;
+      padding: 8px;
+      line-height: 1.4;
+      border: 2px solid var(--primary-color);
+      border-radius: 10px;
+    }
+
     .divPostItem .post-composer-wrapper {
       width: 100%;
     }