fix: build proper q-tag with relay hint and author pubkey for replies (#224)

* fix: build proper q-tag with relay hint and author pubkey for replies

When sending replies in NIP-29 and NIP-C7 adapters, now build the full
q-tag format per NIP-C7 spec: ["q", eventId, relayUrl, pubkey]

Previously only the event ID was included, making it harder for clients
to fetch the referenced event. Now:
- NIP-29: includes group relay URL and author pubkey
- NIP-C7: includes seen relay hint and author pubkey

https://claude.ai/code/session_01Jy51Ayk57fzaFuuFFm1j1K

* chore: remove unused NIP-C7 adapter

The NIP-C7 adapter was already disabled/commented out everywhere.
Removing the file to reduce dead code.

https://claude.ai/code/session_01Jy51Ayk57fzaFuuFFm1j1K

* chore: remove NIP-C7 references from docs and code

- Remove nip-c7 from ChatProtocol type
- Remove commented NIP-C7 adapter imports and switch cases
- Update comments to reference NIP-29 instead of NIP-C7
- Update kind 9 renderer docs to reference NIP-29
- Clean up chat-parser docs and error messages

https://claude.ai/code/session_01Jy51Ayk57fzaFuuFFm1j1K

---------

Co-authored-by: Claude <noreply@anthropic.com>

src/components/ChatViewer.tsx

@@ -26,7 +26,6 @@ import type {
   LiveActivityMetadata,
 } from "@/types/chat";
 import { CHAT_KINDS } from "@/types/chat";
-// import { NipC7Adapter } from "@/lib/chat/adapters/nip-c7-adapter";  // Coming soon
 import { Nip10Adapter } from "@/lib/chat/adapters/nip-10-adapter";
 import { Nip29Adapter } from "@/lib/chat/adapters/nip-29-adapter";
 import { Nip53Adapter } from "@/lib/chat/adapters/nip-53-adapter";
@@ -1243,8 +1242,6 @@ function getAdapter(protocol: ChatProtocol): ChatProtocolAdapter {
   switch (protocol) {
     case "nip-10":
       return new Nip10Adapter();
-    // case "nip-c7":  // Phase 1 - Simple chat (coming soon)
-    //   return new NipC7Adapter();
     case "nip-29":
       return new Nip29Adapter();
     // case "nip-17":  // Phase 2 - Encrypted DMs (coming soon)

src/components/DynamicWindowTitle.tsx

@@ -24,7 +24,6 @@ import { getEventDisplayTitle } from "@/lib/event-title";
 import { UserName } from "./nostr/UserName";
 import { getTagValues } from "@/lib/nostr-utils";
 import { getSemanticAuthor } from "@/lib/semantic-author";
-// import { NipC7Adapter } from "@/lib/chat/adapters/nip-c7-adapter";  // Coming soon
 import { Nip29Adapter } from "@/lib/chat/adapters/nip-29-adapter";
 import type { ChatProtocol, ProtocolIdentifier } from "@/types/chat";
 import { useState, useEffect } from "react";
@@ -742,8 +741,6 @@ function useDynamicTitle(window: WindowInstance): WindowTitleData {
     // Currently only NIP-29 is supported
     const getAdapter = () => {
       switch (protocol) {
-        // case "nip-c7":  // Coming soon
-        //   return new NipC7Adapter();
         case "nip-29":
           return new Nip29Adapter();
         default:

src/components/nostr/kinds/ChatMessageRenderer.tsx

@@ -9,13 +9,13 @@ import { isValidHexEventId } from "@/lib/nostr-validation";
 import { InlineReplySkeleton } from "@/components/ui/skeleton";
 
 /**
- * Renderer for Kind 9 - Chat Message (NIP-C7)
+ * Renderer for Kind 9 - Chat Message (NIP-29)
  * Displays chat messages with optional quoted parent message
  */
 export function Kind9Renderer({ event, depth = 0 }: BaseEventProps) {
   const { addWindow } = useGrimoire();
 
-  // Parse 'q' tag for quoted parent message (NIP-C7 reply format)
+  // Parse 'q' tag for quoted parent message
   const quotedEventIds = getTagValues(event, "q");
   const quotedEventId = quotedEventIds[0]; // First q tag
 

src/components/nostr/kinds/index.tsx

@@ -172,7 +172,7 @@ const kindRenderers: Record<number, React.ComponentType<BaseEventProps>> = {
   6: RepostRenderer, // Repost
   7: Kind7Renderer, // Reaction
   8: BadgeAwardRenderer, // Badge Award (NIP-58)
-  9: Kind9Renderer, // Chat Message (NIP-C7)
+  9: Kind9Renderer, // Chat Message (NIP-29)
   11: Kind1Renderer, // Public Thread Reply (NIP-10)
   16: RepostRenderer, // Generic Repost
   17: Kind7Renderer, // Reaction (NIP-25)