Synth error handling

app/models/issue/synth_limit_exceeded.rb

@@ -0,0 +1,5 @@
+class Issue::SynthLimitExceeded < Issue
+  def title
+    "Synth API Credit Limit Exceeded"
+  end
+end

app/models/provider/synth.rb

@@ -194,11 +194,18 @@ class Provider::Synth
     end
 
     def build_error(response)
-      Provider::Base::ProviderError.new(<<~ERROR)
-        Failed to fetch data from #{self.class}
-          Status: #{response.status}
-          Body: #{response.body.inspect}
-      ERROR
+      if response.status == 402
+        Provider::Base::ProviderError.new(<<~ERROR)
+          Your Synth API credit limit has been exceeded
+          Please visit your Synth billing settings to upgrade your plan or wait for your credits to reset.
+        ERROR
+      else
+        Provider::Base::ProviderError.new(<<~ERROR)
+          Failed to fetch data from #{self.class}
+            Status: #{response.status}
+            Body: #{response.body.inspect}
+        ERROR
+      end
     end
 
     def fetch_page(url, page, params = {})

app/views/issue/_synth_limit_exceeded.html.erb

@@ -0,0 +1,13 @@
+<div class="space-y-4">
+  <p>Your Synth API credit limit has been exceeded.</p>
+
+  <p>You can:</p>
+  <ul class="list-disc pl-4 space-y-2">
+    <li>Wait for your API credits to reset at the start of your next billing cycle or upgrade your Synth plan</li>
+    <li>
+      <%= link_to "View your current usage and upgrade your plan", 
+                  "https://dashboard.synthfinance.com/settings", 
+                  class: "text-blue-500 hover:text-blue-700" %>
+    </li>
+  </ul>
+</div>

app/views/issue/synth_limit_exceededs/show.html.erb

@@ -0,0 +1,15 @@
+<%= content_for :title, @issue.title %>
+
+<%= content_for :description do %>
+  <%= render "issue/synth_limit_exceeded" %>
+<% end %>
+
+<%= content_for :action do %>
+  <div class="space-y-4">
+    <% if self_hosted? %>
+      <%= link_to "View Usage & Upgrade", "https://dashboard.synthfinance.com/settings", class: "btn btn--primary" %>
+    <% else %>
+      <p>Please contact the Maybe team for assistance.</p>
+    <% end %>
+  </div>
+<% end %>