fix: update demo content, fix broken links, and add cart item product links

- Replace all placeholder text with demo-aware copy that signals "replace me"
- Update USPs for POD accuracy (made to order, quality materials)
- Fix broken footer links (/delivery, /returns → /contact)
- Add real platform URLs to social icons with target="_blank"
- Make cart item images and names link to product pages
- Switch about page image to responsive_image component
- Add missing cart_status to collection page cart drawer
- Unify search hint text across all page templates

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

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

@@ -22,11 +22,14 @@
   <main id="main-content" class="content-page" style="background-color: var(--t-surface-base);">
     <.hero_section
       title="About the studio"
-      description="Nature photography, printed with care"
+      description="Your story goes here – this is sample content for the demo shop"
       background={:sunken}
     />
 
-    <.content_body image_url="/mockups/night-sky-blanket-3.jpg">
+    <.content_body
+      image_src="/mockups/night-sky-blanket-3"
+      image_alt="Night sky blanket draped over a chair"
+    >
       <.rich_text blocks={SimpleshopTheme.Theme.PreviewData.about_content()} />
     </.content_body>
   </main>
@@ -42,7 +45,7 @@
     cart_status={assigns[:cart_status]}
   />
 
-  <.search_modal hint_text={~s(Try searching for "mountain", "forest", or "ocean")} />
+  <.search_modal hint_text={~s(Try a search – e.g. "mountain" or "notebook")} />
 
   <.mobile_bottom_nav active_page="about" mode={@mode} />
 </div>

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

@@ -60,7 +60,7 @@
     open={assigns[:cart_drawer_open] || false}
     cart_status={assigns[:cart_status]}
   />
-  <.search_modal hint_text={~s(Try searching for "mountain", "forest", or "ocean")} />
+  <.search_modal hint_text={~s(Try a search – e.g. "mountain" or "notebook")} />
 
   <.mobile_bottom_nav active_page="cart" mode={@mode} />
 </div>

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

@@ -47,9 +47,10 @@
     cart_count={@cart_count}
     mode={@mode}
     open={assigns[:cart_drawer_open] || false}
+    cart_status={assigns[:cart_status]}
   />
 
-  <.search_modal hint_text={~s(Try searching for "mountain", "forest", or "ocean")} />
+  <.search_modal hint_text={~s(Try a search – e.g. "mountain" or "notebook")} />
 
   <.mobile_bottom_nav active_page="collection" mode={@mode} />
 </div>

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

@@ -23,7 +23,7 @@
     <.hero_section
       variant={:page}
       title="Get in touch"
-      description="Questions about your order or just want to say hello? Drop me a message and I'll get back to you as soon as I can."
+      description="Sample contact page for the demo store. Add your own message here – something friendly about how customers can reach you."
     />
 
     <div class="grid gap-8 md:grid-cols-2 mb-12">
@@ -35,20 +35,20 @@
         <.info_card
           title="Handy to know"
           items={[
-            %{label: "Printing", value: "2-5 business days"},
-            %{label: "Delivery", value: "3-7 business days after printing"},
-            %{label: "Returns", value: "Happy to help with faulty or damaged items"}
+            %{label: "Printing", value: "Example: 2-5 business days"},
+            %{label: "Delivery", value: "Example: 3-7 business days after printing"},
+            %{label: "Issues", value: "Example: Reprints for any defects"}
           ]}
         />
 
         <.newsletter_card />
 
         <.social_links_card links={[
-          %{platform: :instagram, url: "#", label: "Instagram"},
-          %{platform: :bluesky, url: "#", label: "Bluesky"},
-          %{platform: :mastodon, url: "#", label: "Mastodon"},
-          %{platform: :kofi, url: "#", label: "Ko-fi"},
-          %{platform: :github, url: "#", label: "GitHub"}
+          %{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"}
         ]} />
       </div>
     </div>
@@ -65,7 +65,7 @@
     cart_status={assigns[:cart_status]}
   />
 
-  <.search_modal hint_text={~s(Try searching for "mountain", "forest", or "ocean")} />
+  <.search_modal hint_text={~s(Try a search – e.g. "mountain" or "notebook")} />
 
   <.mobile_bottom_nav active_page="contact" mode={@mode} />
 </div>

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

@@ -59,5 +59,5 @@
     cart_status={assigns[:cart_status]}
   />
 
-  <.search_modal hint_text={~s(Try searching for "mountain", "forest", or "ocean")} />
+  <.search_modal hint_text={~s(Try a search – e.g. "mountain" or "notebook")} />
 </div>

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

@@ -22,7 +22,7 @@
   <main id="main-content">
     <.hero_section
       title="Original designs, printed on demand"
-      description="From art prints to apparel – unique products created by independent artists and delivered straight to your door."
+      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"
       mode={@mode}
@@ -39,7 +39,7 @@
 
     <.image_text_section
       title="Made with passion, printed with care"
-      description="Every design starts with an idea. We work with quality print partners to bring those ideas to life on premium products – from gallery-quality art prints to everyday essentials."
+      description="This is an example content section. Use it to share your story, highlight what makes your products special, or link to your about page."
       image_url="/mockups/mountain-sunrise-print-3-800.webp"
       link_text="Learn more about the studio →"
       link_page="about"
@@ -58,7 +58,7 @@
     cart_status={assigns[:cart_status]}
   />
 
-  <.search_modal hint_text={~s(Try searching for "mountain", "forest", or "ocean")} />
+  <.search_modal hint_text={~s(Try a search – e.g. "mountain" or "notebook")} />
 
   <.mobile_bottom_nav active_page="home" mode={@mode} />
 </div>

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

@@ -99,7 +99,7 @@
     open={assigns[:cart_drawer_open] || false}
     cart_status={assigns[:cart_status]}
   />
-  <.search_modal hint_text={~s(Try searching for "mountain", "forest", or "ocean")} />
+  <.search_modal hint_text={~s(Try a search – e.g. "mountain" or "notebook")} />
 
   <.mobile_bottom_nav active_page="pdp" mode={@mode} />
 </div>