fix navigation links, footer categories, product card structure, and social icons

- add missing cta_href to hero section and error page CTAs
- replace hardcoded footer shop links with real product categories
- restructure product cards with stretched-link pattern so category
  badges link to their collection page
- unify social icons: footer and contact page share the same default
  links from a single source in content.ex
- add search implementation plan (docs/plans/search.md, deferred)

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

lib/simpleshop_theme_web/components/page_templates/cart.html.heex

@@ -8,6 +8,7 @@
   cart_subtotal={@cart_subtotal}
   cart_drawer_open={assigns[:cart_drawer_open] || false}
   cart_status={assigns[:cart_status]}
+  categories={assigns[:categories] || []}
   active_page="cart"
 >
   <main id="main-content" class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-8">

lib/simpleshop_theme_web/components/page_templates/checkout_success.html.heex

@@ -8,6 +8,7 @@
   cart_subtotal={@cart_subtotal}
   cart_drawer_open={assigns[:cart_drawer_open] || false}
   cart_status={assigns[:cart_status]}
+  categories={assigns[:categories] || []}
   active_page="checkout"
 >
   <main id="main-content" class="max-w-3xl mx-auto px-4 sm:px-6 lg:px-8 py-16">

lib/simpleshop_theme_web/components/page_templates/collection.html.heex

@@ -8,6 +8,7 @@
   cart_subtotal={@cart_subtotal}
   cart_drawer_open={assigns[:cart_drawer_open] || false}
   cart_status={assigns[:cart_status]}
+  categories={assigns[:categories] || []}
   active_page="collection"
 >
   <main id="main-content">

lib/simpleshop_theme_web/components/page_templates/contact.html.heex

@@ -8,6 +8,7 @@
   cart_subtotal={@cart_subtotal}
   cart_drawer_open={assigns[:cart_drawer_open] || false}
   cart_status={assigns[:cart_status]}
+  categories={assigns[:categories] || []}
   active_page="contact"
 >
   <main id="main-content" class="max-w-4xl mx-auto px-4 sm:px-6 lg:px-8 py-16">
@@ -34,13 +35,7 @@
 
         <.newsletter_card />
 
-        <.social_links_card links={[
-          %{platform: :instagram, url: "https://instagram.com", label: "Instagram"},
-          %{platform: :bluesky, url: "https://bsky.app", label: "Bluesky"},
-          %{platform: :mastodon, url: "https://mastodon.social", label: "Mastodon"},
-          %{platform: :kofi, url: "https://ko-fi.com", label: "Ko-fi"},
-          %{platform: :github, url: "https://github.com", label: "GitHub"}
-        ]} />
+        <.social_links_card />
       </div>
     </div>
   </main>

lib/simpleshop_theme_web/components/page_templates/content.html.heex

@@ -8,6 +8,7 @@
   cart_subtotal={@cart_subtotal}
   cart_drawer_open={assigns[:cart_drawer_open] || false}
   cart_status={assigns[:cart_status]}
+  categories={assigns[:categories] || []}
   active_page={@active_page}
 >
   <main id="main-content" class="content-page" style="background-color: var(--t-surface-base);">

lib/simpleshop_theme_web/components/page_templates/error.html.heex

@@ -8,6 +8,7 @@
   cart_subtotal={@cart_subtotal}
   cart_drawer_open={assigns[:cart_drawer_open] || false}
   cart_status={assigns[:cart_status]}
+  categories={assigns[:categories] || []}
   active_page="error"
   error_page
 >
@@ -24,8 +25,10 @@
         description={@error_description}
         cta_text="Go to Homepage"
         cta_page="home"
+        cta_href="/"
         secondary_cta_text="Browse Products"
         secondary_cta_page="collection"
+        secondary_cta_href="/collections/all"
         mode={@mode}
       />
 

lib/simpleshop_theme_web/components/page_templates/home.html.heex

@@ -8,6 +8,7 @@
   cart_subtotal={@cart_subtotal}
   cart_drawer_open={assigns[:cart_drawer_open] || false}
   cart_status={assigns[:cart_status]}
+  categories={assigns[:categories] || []}
   active_page="home"
 >
   <main id="main-content">
@@ -16,6 +17,7 @@
       description="Welcome to the SimpleShop demo store. This is where your hero text goes – something short and punchy about what makes your shop worth a browse."
       cta_text="Shop the collection"
       cta_page="collection"
+      cta_href="/collections/all"
       mode={@mode}
     />
 
@@ -34,6 +36,7 @@
       image_url="/mockups/mountain-sunrise-print-3-800.webp"
       link_text="Learn more about the studio →"
       link_page="about"
+      link_href="/about"
       mode={@mode}
     />
   </main>

lib/simpleshop_theme_web/components/page_templates/pdp.html.heex

@@ -8,6 +8,7 @@
   cart_subtotal={@cart_subtotal}
   cart_drawer_open={assigns[:cart_drawer_open] || false}
   cart_status={assigns[:cart_status]}
+  categories={assigns[:categories] || []}
   active_page="pdp"
 >
   <main id="main-content" class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-8">