feat: integrate compose/reply dialog into UI

Add compose and reply actions to the user interface:

## User Menu Integration

- Add "Compose Note" menu item to user menu (when logged in)
- Opens ComposeDialog for creating new kind 1 notes
- Positioned prominently after user profile section

## Event Menu Integration

- Add "Reply" menu item to EventMenu dropdown (when logged in)
- Opens ComposeDialog with replyTo context
- Automatically handles NIP-10/NIP-22 threading
- Available on all event renderers via BaseEventRenderer

## Changes

- src/components/nostr/user-menu.tsx:
  - Import ComposeDialog and PenSquare icon
  - Add showCompose state
  - Add "Compose Note" menu item

- src/components/nostr/kinds/BaseEventRenderer.tsx:
  - Import ComposeDialog, Reply icon, and account manager
  - Add showReply state to EventMenu
  - Add conditional "Reply" menu item (only when account exists)
  - Render ComposeDialog with replyTo event

Users can now compose notes and reply to events directly from the UI!

src/components/nostr/kinds/BaseEventRenderer.tsx

@@ -10,7 +10,7 @@ import {
   DropdownMenuSeparator,
   DropdownMenuTrigger,
 } from "@/components/ui/dropdown-menu";
-import { Menu, Copy, Check, FileJson, ExternalLink } from "lucide-react";
+import { Menu, Copy, Check, FileJson, ExternalLink, Reply } from "lucide-react";
 import { useGrimoire } from "@/core/state";
 import { useCopy } from "@/hooks/useCopy";
 import { JsonViewer } from "@/components/JsonViewer";
@@ -21,6 +21,9 @@ import { getSeenRelays } from "applesauce-core/helpers/relays";
 import { EventFooter } from "@/components/EventFooter";
 import { cn } from "@/lib/utils";
 import { isAddressableKind } from "@/lib/nostr-kinds";
+import { ComposeDialog } from "@/components/compose";
+import { use$ } from "applesauce-react/hooks";
+import accountManager from "@/services/accounts";
 
 /**
  * Universal event properties and utilities shared across all kind renderers
@@ -101,9 +104,11 @@ function ReplyPreview({
  * Event menu - universal actions for any event
  */
 export function EventMenu({ event }: { event: NostrEvent }) {
+  const account = use$(accountManager.active$);
   const { addWindow } = useGrimoire();
   const { copy, copied } = useCopy();
   const [jsonDialogOpen, setJsonDialogOpen] = useState(false);
+  const [showReply, setShowReply] = useState(false);
 
   const openEventDetail = () => {
     let pointer;
@@ -181,6 +186,12 @@ export function EventMenu({ event }: { event: NostrEvent }) {
           <ExternalLink className="size-4 mr-2" />
           Open
         </DropdownMenuItem>
+        {account && (
+          <DropdownMenuItem onClick={() => setShowReply(true)}>
+            <Reply className="size-4 mr-2" />
+            Reply
+          </DropdownMenuItem>
+        )}
         <DropdownMenuSeparator />
         <DropdownMenuItem onClick={copyEventId}>
           {copied ? (
@@ -201,6 +212,12 @@ export function EventMenu({ event }: { event: NostrEvent }) {
         onOpenChange={setJsonDialogOpen}
         title={`Event ${event.id.slice(0, 8)}... - Raw JSON`}
       />
+      <ComposeDialog
+        open={showReply}
+        onOpenChange={setShowReply}
+        replyTo={event}
+        kind={1}
+      />
     </DropdownMenu>
   );
 }

src/components/nostr/user-menu.tsx

@@ -1,4 +1,4 @@
-import { User } from "lucide-react";
+import { User, PenSquare } from "lucide-react";
 import accounts from "@/services/accounts";
 import { useProfile } from "@/hooks/useProfile";
 import { use$ } from "applesauce-react/hooks";
@@ -19,6 +19,7 @@ import Nip05 from "./nip05";
 import { RelayLink } from "./RelayLink";
 import SettingsDialog from "@/components/SettingsDialog";
 import LoginDialog from "./LoginDialog";
+import { ComposeDialog } from "@/components/compose";
 import { useState } from "react";
 
 function UserAvatar({ pubkey }: { pubkey: string }) {
@@ -56,6 +57,7 @@ export default function UserMenu() {
   const relays = state.activeAccount?.relays;
   const [showSettings, setShowSettings] = useState(false);
   const [showLogin, setShowLogin] = useState(false);
+  const [showCompose, setShowCompose] = useState(false);
 
   function openProfile() {
     if (!account?.pubkey) return;
@@ -75,6 +77,11 @@ export default function UserMenu() {
     <>
       <SettingsDialog open={showSettings} onOpenChange={setShowSettings} />
       <LoginDialog open={showLogin} onOpenChange={setShowLogin} />
+      <ComposeDialog
+        open={showCompose}
+        onOpenChange={setShowCompose}
+        kind={1}
+      />
       <DropdownMenu>
         <DropdownMenuTrigger asChild>
           <Button
@@ -101,6 +108,15 @@ export default function UserMenu() {
                 </DropdownMenuLabel>
               </DropdownMenuGroup>
 
+              <DropdownMenuSeparator />
+              <DropdownMenuItem
+                onClick={() => setShowCompose(true)}
+                className="cursor-pointer"
+              >
+                <PenSquare className="mr-2 size-4" />
+                Compose Note
+              </DropdownMenuItem>
+
               {relays && relays.length > 0 && (
                 <>
                   <DropdownMenuSeparator />