fix: repair login endpoint registration in auth router

.claude/settings.local.json

@@ -67,7 +67,8 @@
       "Bash(xargs sed *)",
       "Bash(sed -i -e 's/\\\\btext-slate-100\\\\b/text-secondary/g' -e s/placeholder:text-slate-700/placeholder:text-muted/g -e s/hover:text-slate-300/hover:text-secondary/g app/page.tsx)",
       "Bash(sed -i 's/\\\\btext-slate-300\\\\b/text-secondary/g' app/page.tsx)",
-      "Bash(npx tsc *)"
+      "Bash(npx tsc *)",
+      "Bash(python -m pytest backend/tests/ -q)"
     ]
   }
 }