UX: remove auto-cover feature and add inline game editing

styles.css

@@ -473,6 +473,31 @@ button {
   gap: 0.45rem;
 }
 
+.inline-editor {
+  margin-top: 0.75rem;
+  border-top: 1px dashed #ccd7e4;
+  padding-top: 0.65rem;
+  display: grid;
+  gap: 0.45rem;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+}
+
+.inline-editor label {
+  gap: 0.25rem;
+  font-size: 0.82rem;
+}
+
+.inline-editor input {
+  padding: 0.45rem 0.55rem;
+  font-size: 0.9rem;
+}
+
+.inline-editor-actions {
+  display: flex;
+  gap: 0.45rem;
+  align-items: center;
+}
+
 .btn-inline {
   background: #dde8f5;
   color: #1e3045;
@@ -524,6 +549,10 @@ button {
     flex-direction: column;
   }
 
+  .inline-editor {
+    grid-template-columns: 1fr;
+  }
+
   .game-cover {
     width: 48px;
     height: 64px;