add review submission flow (phase 3)

- Add ReviewNotifier for verification emails
- Add review token generation and verification
- Add request_review_verification function
- Update reviews_section component with write-a-review form
- Create ReviewForm LiveView for submitting/editing reviews
- Add /reviews/new and /reviews/:id/edit routes
- Add review buttons to order detail page
- Update block_types to load real review data
- Tests for token and verification functions

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

lib/berrypod_web/page_renderer.ex

@@ -812,8 +812,13 @@ defmodule BerrypodWeb.PageRenderer do
     <.reviews_section
       :if={@theme_settings.pdp_reviews}
       reviews={assigns[:reviews] || []}
-      average_rating={assigns[:average_rating] || 5}
-      total_count={assigns[:total_count]}
+      average_rating={assigns[:average_rating]}
+      total_count={assigns[:review_count]}
+      product={assigns[:product]}
+      email_session={assigns[:email_session]}
+      existing_review={assigns[:existing_review]}
+      review_form={assigns[:review_form]}
+      review_status={assigns[:review_status]}
     />
     """
   end
@@ -1388,7 +1393,7 @@ defmodule BerrypodWeb.PageRenderer do
               <%= if info && info.thumb do %>
                 <img src={info.thumb} alt={item.product_name} class="checkout-item-thumb" />
               <% end %>
-              <div>
+              <div class="checkout-item-details">
                 <%= if info && info.slug do %>
                   <.link
                     patch={R.product(info.slug)}
@@ -1403,6 +1408,23 @@ defmodule BerrypodWeb.PageRenderer do
                   <p class="checkout-item-detail">{item.variant_title}</p>
                 <% end %>
                 <p class="checkout-item-detail">Qty: {item.quantity}</p>
+                <%= if info && info.slug do %>
+                  <%= if info[:existing_review] do %>
+                    <.link
+                      href={"/reviews/#{info.existing_review.id}/edit?product=#{info.slug}"}
+                      class="checkout-item-review-link"
+                    >
+                      Edit your review
+                    </.link>
+                  <% else %>
+                    <.link
+                      patch={R.product(info.slug) <> "#reviews"}
+                      class="checkout-item-review-link"
+                    >
+                      Write a review
+                    </.link>
+                  <% end %>
+                <% end %>
               </div>
               <span class="checkout-item-price">
                 {Cart.format_price(item.unit_price * item.quantity)}