refactor: rename to NIP-85 (kind 39802 for reading progress)

- Rename NIP-39802.md to NIP-85.md
- Update all references from NIP-39802 to NIP-85 in code comments
- Add Table of Contents to NIP document
- Update kinds.ts to reference NIP-85 and NIP-84 (highlights)
- Maintain kind number 39802 for the event type

NIP-85 is the specification number, 39802 is the event kind number.

public/md/NIP-85.md

@@ -1,10 +1,23 @@
-# NIP-39802
+# NIP-85
 
 ## Reading Progress
 
 `draft` `optional`
 
-This NIP defines a parameterized replaceable event kind for tracking reading progress across articles and web content.
+This NIP defines kind `39802`, a parameterized replaceable event for tracking reading progress across articles and web content.
+
+## Table of Contents
+
+* [Event Kind](#event-kind)
+* [Event Structure](#event-structure)
+  * [Tags](#tags)
+  * [Content](#content)
+  * [Semantics](#semantics)
+* [Examples](#examples)
+* [Querying](#querying)
+* [Privacy Considerations](#privacy-considerations)
+* [Rationale](#rationale)
+* [Implementation Notes](#implementation-notes)
 
 ## Event Kind
 

src/config/kinds.ts

@@ -1,9 +1,9 @@
 // Nostr event kinds used throughout the application
 export const KINDS = {
-  Highlights: 9802,              // NIP-?? user highlights
+  Highlights: 9802,              // NIP-84 user highlights
   BlogPost: 30023,               // NIP-23 long-form article
   AppData: 30078,                // NIP-78 application data
-  ReadingProgress: 39802,        // NIP-39802 reading progress
+  ReadingProgress: 39802,        // NIP-85 reading progress
   List: 30001,                   // NIP-51 list (addressable)
   ListReplaceable: 30003,        // NIP-51 replaceable list
   ListSimple: 10003,             // NIP-51 simple list

src/services/readingDataProcessor.ts

@@ -3,7 +3,7 @@ import { ReadItem } from './readsService'
 import { fallbackTitleFromUrl } from '../utils/readItemMerge'
 import { KINDS } from '../config/kinds'
 
-const READING_PROGRESS_KIND = KINDS.ReadingProgress // 39802
+const READING_PROGRESS_KIND = KINDS.ReadingProgress // 39802 - NIP-85
 
 interface ReadArticle {
   id: string
@@ -37,13 +37,13 @@ export function processReadingProgress(
       const content = JSON.parse(event.content)
       const position = content.progress || 0
       
-      // Validate progress is between 0 and 1 (NIP-39802 requirement)
+      // Validate progress is between 0 and 1 (NIP-85 requirement)
       if (position < 0 || position > 1) {
         console.warn('Invalid progress value (must be 0-1):', position, 'event:', event.id.slice(0, 8))
         continue
       }
       
-      // Use event.created_at as authoritative timestamp (NIP-39802 spec)
+      // Use event.created_at as authoritative timestamp (NIP-85 spec)
       const timestamp = event.created_at
 
       let itemId: string

src/services/readingPositionService.ts

@@ -7,7 +7,7 @@ import { publishEvent } from './writeService'
 import { RELAYS } from '../config/relays'
 import { KINDS } from '../config/kinds'
 
-const READING_PROGRESS_KIND = KINDS.ReadingProgress // 39802 - NIP-39802 Reading Progress
+const READING_PROGRESS_KIND = KINDS.ReadingProgress // 39802 - NIP-85 Reading Progress
 
 export interface ReadingPosition {
   position: number // 0-1 scroll progress