Answer the inbox from the panel, with templates

A reply starts from a template filled in the language the person wrote in,
is sent by the application when it has a mailer that delivers or handed to
the replier's mail program otherwise, and is recorded on the submission.
The same is available through the API.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

public/openapi.yaml

@@ -4143,6 +4143,89 @@ paths:
                       slug: { type: object, additionalProperties: { type: string } }
         "403": { $ref: "#/components/responses/Forbidden" }
 
+  /v1/applications/{application}/replies:
+    get:
+      tags: [Applications]
+      summary: Replies given to an application
+      description: Newest first.
+      parameters:
+        - name: application
+          in: path
+          required: true
+          schema: { type: integer }
+      responses:
+        "200":
+          description: The replies
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  data:
+                    type: array
+                    items: { $ref: "#/components/schemas/ApplicationReply" }
+        "403": { $ref: "#/components/responses/Forbidden" }
+
+  /v1/applications/{application}/reply:
+    post:
+      tags: [Applications]
+      summary: Reply to an application
+      description: |
+        `subject` and `body`, or a `template_id` to fill whichever is left out
+        — in the language the person wrote in. Sent by this application when
+        it has a mailer that delivers; otherwise recorded, and the answer
+        carries a `mailto` link to send it by hand. Moves a new application to
+        `contacted`.
+      parameters:
+        - name: application
+          in: path
+          required: true
+          schema: { type: integer }
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: object
+              properties:
+                template_id: { type: integer, nullable: true }
+                subject: { type: string, maxLength: 255 }
+                body: { type: string }
+      responses:
+        "201":
+          description: Reply recorded
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  data:
+                    allOf:
+                      - $ref: "#/components/schemas/ApplicationReply"
+                      - type: object
+                        properties:
+                          mailto: { type: string, nullable: true }
+        "403": { $ref: "#/components/responses/Forbidden" }
+        "422": { $ref: "#/components/responses/ValidationError" }
+
+  /v1/reply-templates:
+    get:
+      tags: [Applications]
+      summary: Reply templates
+      description: Every template, in every language. Managed in the panel.
+      responses:
+        "200":
+          description: The templates
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  data:
+                    type: array
+                    items: { $ref: "#/components/schemas/ReplyTemplate" }
+        "403": { $ref: "#/components/responses/Forbidden" }
+
   /v1/media:
     get:
       tags: [Media]
@@ -6067,6 +6150,29 @@ components:
         links: { $ref: "#/components/schemas/PaginationLinks" }
         meta: { $ref: "#/components/schemas/PaginationMeta" }
 
+    ApplicationReply:
+      type: object
+      properties:
+        id: { type: integer }
+        subject: { type: string }
+        body: { type: string }
+        channel: { type: string, enum: [mail, mailto], description: "`mail` when sent from here; `mailto` when handed to the replier's mail program." }
+        author:
+          type: object
+          properties:
+            id: { type: integer, nullable: true }
+            name: { type: string, nullable: true }
+        created_at: { type: string, format: date-time }
+
+    ReplyTemplate:
+      type: object
+      properties:
+        id: { type: integer }
+        name: { type: string }
+        kind: { type: string, nullable: true, enum: [contribute, request] }
+        subject: { type: object, additionalProperties: { type: string }, description: "Language → text. `{name}`, `{subject}` and `{sender}` are filled in." }
+        body: { type: object, additionalProperties: { type: string } }
+
     MediaFor:
       type: string
       enum: [pages, technologies, projects, members, clients, testimonials]