openapi: add agent_instructions to MemberNotifyResponse

/member/notify returns this advisory field when the submitted HTML body
does not follow the default email layout (no max-width:600px wrapper),
on dry runs and real sends alike.

Author: ysyneu

api-reference/openapi.en.json

@@ -29274,6 +29274,10 @@
           "html": {
             "type": "string",
             "description": "Only present when `dry_run` is `true`: the complete email HTML exactly as recipients would receive it, after sanitization."
+          },
+          "agent_instructions": {
+            "type": "string",
+            "description": "Present when the submitted HTML body does not follow the default email layout (no `max-width:600px` wrapper table): guidance telling the calling AI SRE agent how to conform. Advisory only — a format the caller deliberately chose needs no change. Returned on dry runs and real sends alike."
           }
         }
       },

api-reference/openapi.zh.json

@@ -29274,6 +29274,10 @@
           "html": {
             "type": "string",
             "description": "仅当 `dry_run` 为 `true` 时返回：清洗后、收件人将收到的完整邮件 HTML。"
+          },
+          "agent_instructions": {
+            "type": "string",
+            "description": "当提交的 HTML 正文不符合默认邮件版式（缺少 `max-width:600px` 外层包裹表格）时返回：告知调用的 AI SRE agent 如何对齐的指引。仅为建议——调用方有意选择的格式无需改动。dry run 与真实发送均会返回。"
           }
         }
       },

api-reference/platform.openapi.en.json

@@ -4581,6 +4581,10 @@
           "html": {
             "type": "string",
             "description": "Only present when `dry_run` is `true`: the complete email HTML exactly as recipients would receive it, after sanitization."
+          },
+          "agent_instructions": {
+            "type": "string",
+            "description": "Present when the submitted HTML body does not follow the default email layout (no `max-width:600px` wrapper table): guidance telling the calling AI SRE agent how to conform. Advisory only — a format the caller deliberately chose needs no change. Returned on dry runs and real sends alike."
           }
         }
       },

api-reference/platform.openapi.zh.json

@@ -4581,6 +4581,10 @@
           "html": {
             "type": "string",
             "description": "仅当 `dry_run` 为 `true` 时返回：清洗后、收件人将收到的完整邮件 HTML。"
+          },
+          "agent_instructions": {
+            "type": "string",
+            "description": "当提交的 HTML 正文不符合默认邮件版式（缺少 `max-width:600px` 外层包裹表格）时返回：告知调用的 AI SRE agent 如何对齐的指引。仅为建议——调用方有意选择的格式无需改动。dry run 与真实发送均会返回。"
           }
         }
       },