refactor: simplify Monthly Cost card subtitle — remove redundant baseline rate

- Remove $/hr from header row (monthly figure is the primary metric)
- Replace "baseline $X.XXX/hr" with "$X.XXX/hr now" (current burn rate, clear label)
- "vs Fixed 4 vCPU ($166/mo)" row already communicates the baseline context

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: theo-learner

src/app/page.tsx

@@ -1514,12 +1514,9 @@ export default function Dashboard() {
                       ${monthlyCost.toFixed(0)}
                     </span>
                     <span className="text-base font-bold text-gray-400">/mo</span>
-                    <span className={`ml-auto text-[11px] font-semibold ${isPeak ? 'text-red-500' : 'text-gray-500'}`}>
-                      ${hourlyRate.toFixed(3)}/hr
-                    </span>
                   </div>
                   <p className="text-gray-400 text-[10px] mt-0.5">
-                    {vcpu} vCPU · {memGiB} GiB · baseline ${baselineHourly.toFixed(3)}/hr
+                    {vcpu} vCPU · {memGiB} GiB · ${hourlyRate.toFixed(3)}/hr now
                   </p>
                 </div>
                 <div className="mt-3 pt-3 border-t border-gray-100">