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/router.ex

@@ -296,6 +296,11 @@ defmodule BerrypodWeb.Router do
       # └─────────────────────────────────────────────────────────────────────┘
 
       live "/", Shop.Page, :home
+
+      # Review routes (before catch-all)
+      live "/reviews/new", Shop.ReviewForm, :new
+      live "/reviews/:id/edit", Shop.ReviewForm, :edit
+
       live "/:prefix/:id_or_slug", Shop.Page, :dynamic_prefix
       live "/:slug", Shop.Page, :custom_page
     end