docs: document the weekly newsletter draft and 1.7.9

NIP.md

@@ -3322,6 +3322,28 @@ This prevents anyone from spamming the community newsletter feed.
 }
 ```
 
+### Weekly draft (kind 30078)
+
+`scripts/newsletter-weekly.ts` publishes the generated issue as a **public
+NIP-78 draft** before an admin publishes it:
+
+```json
+{
+  "kind": 30078,
+  "content": "<JSON NewsletterDraft: number,title,slug,summary,image,body,nostrText,coverTitle,createdAt>",
+  "tags": [
+    ["d", "skatespots:newsletter:draft"],
+    ["t", "skatespotsnewsdraft"],
+    ["alt", "SkateSpots weekly newsletter draft #007"]
+  ]
+}
+```
+
+The draft is authored by an admin and read only by the admin composer. It is
+plaintext/public (no subscriber list, keys or private messages) and is **not**
+an issue: subscribers only see a later kind-30023 publish. Set
+`NEWSLETTER_AUTOPUBLISH=1` to have the same run publish the issue and teaser.
+
 ### Subscription marker (kind 30078)
 
 A reader opts in to the in-app newsletter mailbox by publishing a per-user