feat: add free plan to pricing page and enforce 1-site limit

Show the free tier (€0, 1 site, 5k pageviews, 6 months retention)
as the first card on the pricing page. Enforce a 1-site limit for
free plan users in the frontend.

CHANGELOG.md

@@ -6,6 +6,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 
 ## [Unreleased]
 
+### Added
+
+- **Free plan now visible on the Pricing page.** The free tier is no longer hidden — it's displayed as the first option on the Pricing page so you can see exactly what you get before signing up: 1 site, 5,000 monthly pageviews, and 6 months of data retention, completely free.
+- **Free plan limited to 1 site.** Free accounts are now limited to a single site. If you need more, you can upgrade to Solo or above from the Pricing page.
+
 ### Improved
 
 - **Sites now show their verification status.** Each site on your dashboard now displays either a green "Active" badge (if verified) or an amber "Unverified" badge. When you verify your tracking script installation, the status is saved permanently — no more showing "Active" for sites that haven't been set up yet.

components/PricingSection.tsx

@@ -292,7 +292,42 @@ export default function PricingSection() {
         </div>
 
         {/* Pricing Grid */}
-        <div className="grid md:grid-cols-4 divide-y md:divide-y-0 md:divide-x divide-neutral-200 dark:divide-neutral-800">
+        <div className="grid md:grid-cols-5 divide-y md:divide-y-0 md:divide-x divide-neutral-200 dark:divide-neutral-800">
+          {/* Free Plan */}
+          <div className="p-6 flex flex-col relative transition-colors hover:bg-neutral-50/50 dark:hover:bg-neutral-800/50">
+            <div className="mb-8">
+              <h3 className="text-lg font-bold text-neutral-900 dark:text-white mb-2">Free</h3>
+              <p className="text-sm text-neutral-500 dark:text-neutral-400 min-h-[40px] mb-4">For trying Pulse on a personal project</p>
+              <div className="flex items-baseline gap-1">
+                <span className="text-4xl font-bold text-neutral-900 dark:text-white">€0</span>
+                <span className="text-neutral-500 dark:text-neutral-400 font-medium">/forever</span>
+              </div>
+            </div>
+
+            <Button
+              onClick={() => {
+                if (!user) {
+                  initiateOAuthFlow()
+                  return
+                }
+                window.location.href = '/'
+              }}
+              variant="secondary"
+              className="w-full mb-8"
+            >
+              Get started
+            </Button>
+
+            <ul className="space-y-4 flex-grow">
+              {['1 site', '5k monthly pageviews', '6 months data retention', '100% Data ownership'].map((feature) => (
+                <li key={feature} className="flex items-start gap-3 text-sm text-neutral-600 dark:text-neutral-400">
+                  <CheckCircleIcon className="w-5 h-5 shrink-0 text-neutral-400" />
+                  <span>{feature}</span>
+                </li>
+              ))}
+            </ul>
+          </div>
+
           {PLANS.map((plan) => {
             const priceDetails = getPriceDetails(plan.id)
             const isTeam = plan.id === 'team'

lib/plans.ts

@@ -7,9 +7,9 @@ export const PLAN_ID_SOLO = 'solo'
 export const PLAN_ID_TEAM = 'team'
 export const PLAN_ID_BUSINESS = 'business'
 
-/** Sites limit per plan. Returns null for free (no limit enforced in UI). */
+/** Sites limit per plan. */
 export function getSitesLimitForPlan(planId: string | null | undefined): number | null {
-  if (!planId || planId === 'free') return null
+  if (!planId || planId === 'free') return 1
   switch (planId) {
     case 'solo': return 1
     case 'team': return 5