refactor: restore global styles for README markdown images to ensure proper scaling

Author: Yehonal

src/app/repo-details/repo-details.component.scss

@@ -9,6 +9,3 @@
   padding: 25px;
 }
 
-#readme-markdown img {
-  max-width: 100%;
-}

src/styles.scss

@@ -2,3 +2,11 @@
 
 html, body { height: 100%; }
 body { margin: 0; font-family: Roboto, "Helvetica Neue", sans-serif; }
+
+/* Ensure images inside README markdown scale correctly.
+   Using a global rule so it applies to content rendered via innerHTML/ngx-markdown
+   which doesn't receive Angular's emulated encapsulation attributes. */
+#readme-markdown img {
+  max-width: 100%;
+  height: auto;
+}