havre smoke: import is on the characters tab

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BQqGFv54JJTw7p3rgGjP7C

ventures/havre/tests/smoke.mjs

@@ -1049,6 +1049,7 @@ async function main() {
         png = path;
       }
     }
+    await page.click("#lt-chars");
     await page.click("#import");
     await page.setInputFiles("#file", png);
     await count(page, "#roster tr", 5);