feat: add reusable content fragments

webui/src/api/templates.ts

@@ -13,6 +13,7 @@ export type TemplateType =
   | "form_letter"
   | "list_layout"
   | "email"
+  | "content_fragment"
   | "generic";
 
 export type TemplateFieldType =

webui/src/features/templates/TemplatesPage.tsx

@@ -70,6 +70,7 @@ const TEMPLATE_TYPES: Array<{ value: TemplateType; label: string }> = [
   { value: "form_letter", label: "Form letter" },
   { value: "list_layout", label: "List layout" },
   { value: "email", label: "Email" },
+  { value: "content_fragment", label: "Content fragment" },
   { value: "generic", label: "Generic" }
 ];
 
@@ -551,7 +552,11 @@ function emptyPayload(templateType: TemplateType = "form_letter"): TemplatePaylo
     scope_type: "tenant",
     scope_id: null,
     template_type: templateType,
-    usages: [templateType === "email" ? "campaign.email" : "campaign.postal"],
+    usages: templateType === "email"
+      ? ["campaign.email", "campaign.content"]
+      : templateType === "content_fragment"
+        ? ["campaign.content"]
+        : ["campaign.postal"],
     locale: "en",
     required_fields: [],
     output_profiles: [],