fix(web): keep commands left-to-right on RTL pages

Code blocks isolate as LTR so an install command on /ar reads as typed.
Checked on a static /ar render at 390 and 1280; design and ocean contract
tests pass (14).

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_01R9rJEoMuUSRWznU6QjkE7h

web/app/styles/base.css

@@ -159,6 +159,10 @@ pre.code-block {
   white-space: pre;
   tab-size: 2;
   -webkit-overflow-scrolling: touch;
+  /* Commands read left to right in every locale, including RTL pages. */
+  direction: ltr;
+  text-align: left;
+  unicode-bidi: isolate;
 }
 pre.code-block .prompt,
 pre.code-block .comment { color: var(--muted); }