Implement Note Composer and enhance NostrFeed interactions

- Added NoteComposer.vue for composing notes, including reply functionality and mention support.
- Integrated NoteComposer into Home.vue, allowing users to publish notes and reply to existing ones.
- Enhanced NostrFeed.vue to handle reply events, improving user engagement with notes.
- Updated Home.vue to manage note publishing and reply states effectively.

These changes enhance the user experience by providing a seamless way to compose and interact with notes within the feed.

Enhance NostrFeed and Home components for improved user experience

- Added compact mode support in NostrFeed.vue to optimize display for mobile users.
- Refactored layout in NostrFeed.vue for better responsiveness and usability, including adjustments to padding and spacing.
- Updated Home.vue to integrate a collapsible filter panel and a floating action button for composing notes, enhancing accessibility and interaction.
- Implemented quick filter presets for mobile, allowing users to easily switch between content types.

These changes improve the overall functionality and user engagement within the feed, providing a more streamlined experience across devices.

Enhance NoteComposer and Home components for improved note management

- Updated NoteComposer.vue to include a close button for better user control when composing notes.
- Modified Home.vue to handle the close event from NoteComposer, allowing users to dismiss the composer easily.

These changes enhance the user experience by providing a more intuitive interface for composing and managing notes.

src/modules/nostr-feed/components/NostrFeed.vue

@@ -1,24 +1,29 @@
 <script setup lang="ts">
 import { computed } from 'vue'
-import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card'
-import { ScrollArea } from '@/components/ui/scroll-area'
 import { Badge } from '@/components/ui/badge'
 import { Button } from '@/components/ui/button'
 import { formatDistanceToNow } from 'date-fns'
-import { Megaphone, RefreshCw, AlertCircle } from 'lucide-vue-next'
+import { Megaphone, RefreshCw, AlertCircle, Reply, Heart, Share } from 'lucide-vue-next'
 import { useFeed } from '../composables/useFeed'
 import appConfig from '@/app.config'
 import type { ContentFilter } from '../services/FeedService'
 import MarketProduct from './MarketProduct.vue'
 import { parseMarketProduct, isMarketEvent, getMarketEventType } from '../utils/marketParser'
 
+interface Emits {
+  (e: 'reply-to-note', note: { id: string; content: string; pubkey: string }): void
+}
+
 const props = defineProps<{
   relays?: string[]
   feedType?: 'all' | 'announcements' | 'events' | 'general' | 'custom'
   contentFilters?: ContentFilter[]
   adminPubkeys?: string[]
+  compactMode?: boolean
 }>()
 
+const emit = defineEmits<Emits>()
+
 // Get admin/moderator pubkeys from props or app config
 const adminPubkeys = props.adminPubkeys || appConfig.modules['nostr-feed']?.config?.adminPubkeys || []
 
@@ -92,17 +97,26 @@ function onShareProduct(productId: string) {
   console.log('Share product:', productId)
   // TODO: Implement sharing functionality
 }
+
+// Handle reply to note
+function onReplyToNote(note: any) {
+  emit('reply-to-note', {
+    id: note.id,
+    content: note.content,
+    pubkey: note.pubkey
+  })
+}
 </script>
 
 <template>
-  <Card class="w-full">
+  <div class="flex flex-col h-full">
-    <CardHeader>
+    <!-- Compact Header (only in non-compact mode) -->
-      <div class="flex items-center justify-between">
+    <div v-if="!compactMode" class="flex items-center justify-between p-4 border-b">
       <div class="flex items-center gap-2">
         <Megaphone class="h-5 w-5 text-primary" />
         <div>
-            <CardTitle>{{ feedTitle }}</CardTitle>
+          <h2 class="text-lg font-semibold">{{ feedTitle }}</h2>
-            <CardDescription>{{ feedDescription }}</CardDescription>
+          <p class="text-sm text-muted-foreground">{{ feedDescription }}</p>
         </div>
       </div>
       <Button
@@ -116,9 +130,9 @@ function onShareProduct(productId: string) {
         Refresh
       </Button>
     </div>
-    </CardHeader>
 
-    <CardContent>
+    <!-- Feed Content Container -->
+    <div class="flex-1 overflow-hidden">
       <!-- Loading State -->
       <div v-if="isLoading" class="flex items-center justify-center py-8">
         <div class="flex items-center gap-2">
@@ -128,7 +142,7 @@ function onShareProduct(productId: string) {
       </div>
 
       <!-- Error State -->
-      <div v-else-if="error" class="text-center py-8">
+      <div v-else-if="error" class="text-center py-8 px-4">
         <div class="flex items-center justify-center gap-2 text-destructive mb-4">
           <AlertCircle class="h-5 w-5" />
           <span>Failed to load feed</span>
@@ -138,7 +152,7 @@ function onShareProduct(productId: string) {
       </div>
 
       <!-- No Admin Pubkeys Warning -->
-      <div v-else-if="!hasAdminPubkeys && props.feedType === 'announcements'" class="text-center py-8">
+      <div v-else-if="!hasAdminPubkeys && props.feedType === 'announcements'" class="text-center py-8 px-4">
         <div class="flex items-center justify-center gap-2 text-muted-foreground mb-4">
           <Megaphone class="h-5 w-5" />
           <span>No admin pubkeys configured</span>
@@ -148,8 +162,8 @@ function onShareProduct(productId: string) {
         </p>
       </div>
 
-      <!-- No Notes -->
+      <!-- No Posts -->
-      <div v-else-if="notes.length === 0" class="text-center py-8">
+      <div v-else-if="notes.length === 0" class="text-center py-8 px-4">
         <div class="flex items-center justify-center gap-2 text-muted-foreground mb-4">
           <Megaphone class="h-5 w-5" />
           <span>No posts yet</span>
@@ -159,12 +173,13 @@ function onShareProduct(productId: string) {
         </p>
       </div>
 
-      <!-- Posts List -->
+      <!-- Posts List - Full height scroll -->
-      <ScrollArea v-else class="h-[400px] pr-4">
+      <div v-else class="h-full overflow-y-auto scrollbar-thin scrollbar-thumb-border scrollbar-track-transparent">
-        <div class="space-y-4">
+        <div class="divide-y divide-border">
           <div v-for="note in notes" :key="note.id">
             <!-- Market Product Component (kind 30018) -->
             <template v-if="note.kind === 30018">
+              <div class="p-3">
                 <div class="mb-2 flex items-center gap-2 text-xs text-muted-foreground">
                   <Badge
                     v-if="isAdminPost(note.pubkey)"
@@ -184,7 +199,7 @@ function onShareProduct(productId: string) {
                 <!-- Fallback for invalid market data -->
                 <div
                   v-else
-                class="p-4 border rounded-lg hover:bg-accent/50 transition-colors border-destructive/20"
+                  class="p-3 border rounded-lg border-destructive/20"
                 >
                   <div class="flex items-center gap-2 mb-2">
                     <Badge variant="destructive" class="text-xs">
@@ -198,34 +213,34 @@ function onShareProduct(productId: string) {
                     Unable to parse market product data
                   </div>
                 </div>
+              </div>
             </template>
 
             <!-- Regular Text Posts and Other Event Types -->
             <div
               v-else
-              class="p-4 border rounded-lg hover:bg-accent/50 transition-colors"
+              class="p-3 hover:bg-accent/50 transition-colors"
             >
               <!-- Note Header -->
-              <div class="flex items-start justify-between mb-2">
+              <div class="flex items-center flex-wrap gap-1.5 mb-2">
-                <div class="flex items-center gap-2">
                 <Badge
                   v-if="isAdminPost(note.pubkey)"
                   variant="default"
-                    class="text-xs"
+                  class="text-xs px-1.5 py-0.5"
                 >
                   Admin
                 </Badge>
                 <Badge
                   v-if="note.isReply"
                   variant="secondary"
-                    class="text-xs"
+                  class="text-xs px-1.5 py-0.5"
                 >
                   Reply
                 </Badge>
                 <Badge
                   v-if="isMarketEvent({ kind: note.kind })"
                   variant="outline"
-                    class="text-xs"
+                  class="text-xs px-1.5 py-0.5"
                 >
                   {{ getMarketEventType({ kind: note.kind }) }}
                 </Badge>
@@ -233,29 +248,60 @@ function onShareProduct(productId: string) {
                   {{ formatDistanceToNow(note.created_at * 1000, { addSuffix: true }) }}
                 </span>
               </div>
-              </div>
 
               <!-- Note Content -->
               <div class="text-sm leading-relaxed whitespace-pre-wrap">
                 {{ note.content }}
               </div>
 
-              <!-- Note Footer -->
+              <!-- Note Actions -->
-              <div v-if="note.mentions.length > 0" class="mt-2 pt-2 border-t">
+              <div class="mt-2 pt-2 border-t">
-                <div class="flex items-center gap-1 text-xs text-muted-foreground">
+                <div class="flex items-center justify-between">
+                  <!-- Mentions -->
+                  <div v-if="note.mentions.length > 0" class="flex items-center gap-1 text-xs text-muted-foreground">
                     <span>Mentions:</span>
-                  <span v-for="mention in note.mentions.slice(0, 3)" :key="mention" class="font-mono">
+                    <span v-for="mention in note.mentions.slice(0, 2)" :key="mention" class="font-mono">
-                    {{ mention.slice(0, 8) }}...
+                      {{ mention.slice(0, 6) }}...
                     </span>
-                  <span v-if="note.mentions.length > 3" class="text-muted-foreground">
+                    <span v-if="note.mentions.length > 2" class="text-muted-foreground">
-                    +{{ note.mentions.length - 3 }} more
+                      +{{ note.mentions.length - 2 }} more
                     </span>
                   </div>
+
+                  <!-- Action Buttons - Compact on mobile -->
+                  <div class="flex items-center gap-0.5">
+                    <Button
+                      variant="ghost"
+                      size="sm"
+                      class="h-7 px-1.5 text-muted-foreground hover:text-foreground"
+                      @click="onReplyToNote(note)"
+                    >
+                      <Reply class="h-3.5 w-3.5 sm:mr-1" />
+                      <span class="hidden sm:inline">Reply</span>
+                    </Button>
+                    <Button
+                      variant="ghost"
+                      size="sm"
+                      class="h-7 px-1.5 text-muted-foreground hover:text-foreground"
+                    >
+                      <Heart class="h-3.5 w-3.5 sm:mr-1" />
+                      <span class="hidden sm:inline">Like</span>
+                    </Button>
+                    <Button
+                      variant="ghost"
+                      size="sm"
+                      class="h-7 px-1.5 text-muted-foreground hover:text-foreground"
+                    >
+                      <Share class="h-3.5 w-3.5 sm:mr-1" />
+                      <span class="hidden sm:inline">Share</span>
+                    </Button>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </div>
         </div>
       </div>
     </div>
   </div>
-      </ScrollArea>
-    </CardContent>
-  </Card>
 </template>

src/modules/nostr-feed/components/NoteComposer.vue

@@ -0,0 +1,337 @@
+<template>
+  <Card class="w-full">
+    <CardHeader>
+      <div class="flex items-center justify-between">
+        <CardTitle class="flex items-center gap-2">
+          <Edit3 class="h-5 w-5" />
+          Compose Note
+        </CardTitle>
+        <Button variant="ghost" size="sm" @click="emit('close')" class="h-8 w-8 p-0">
+          <X class="h-4 w-4" />
+        </Button>
+      </div>
+      <CardDescription>
+        Share your thoughts with the community
+      </CardDescription>
+    </CardHeader>
+
+    <CardContent>
+      <form @submit="onSubmit" class="space-y-4">
+        <!-- Note Content -->
+        <FormField v-slot="{ componentField }" name="content">
+          <FormItem>
+            <FormLabel>Message *</FormLabel>
+            <FormControl>
+              <Textarea
+                placeholder="What's on your mind?"
+                class="min-h-[120px] resize-y"
+                v-bind="componentField"
+                :maxlength="280"
+              />
+            </FormControl>
+            <div class="flex items-center justify-between">
+              <FormDescription>
+                Share your thoughts, updates, or announcements
+              </FormDescription>
+              <span class="text-xs text-muted-foreground">
+                {{ characterCount }}/280
+              </span>
+            </div>
+            <FormMessage />
+          </FormItem>
+        </FormField>
+
+        <!-- Reply To (if replying) -->
+        <div v-if="replyTo" class="p-3 border rounded-lg bg-muted/50">
+          <div class="flex items-center justify-between mb-2">
+            <div class="flex items-center gap-2">
+              <Reply class="h-4 w-4 text-muted-foreground" />
+              <span class="text-sm text-muted-foreground">Replying to</span>
+            </div>
+            <Button variant="ghost" size="sm" @click="clearReply">
+              <X class="h-4 w-4" />
+            </Button>
+          </div>
+          <div class="text-sm truncate">
+            {{ replyTo.content.slice(0, 100) }}{{ replyTo.content.length > 100 ? '...' : '' }}
+          </div>
+        </div>
+
+        <!-- Mentions -->
+        <FormField name="mentions">
+          <FormItem>
+            <FormLabel>Mentions (optional)</FormLabel>
+            <FormControl>
+              <div class="space-y-2">
+                <Input
+                  v-model="newMention"
+                  placeholder="Add npub or hex pubkey"
+                  @keydown.enter.prevent="addMention"
+                />
+                <div v-if="mentions.length > 0" class="flex flex-wrap gap-2">
+                  <Badge
+                    v-for="(mention, index) in mentions"
+                    :key="index"
+                    variant="secondary"
+                    class="gap-1"
+                  >
+                    {{ formatPubkey(mention) }}
+                    <button @click="removeMention(index)" class="ml-1 hover:text-destructive">
+                      <X class="h-3 w-3" />
+                    </button>
+                  </Badge>
+                </div>
+              </div>
+            </FormControl>
+            <FormDescription>
+              Press Enter to add mentions. Use npub format or hex pubkeys.
+            </FormDescription>
+            <FormMessage />
+          </FormItem>
+        </FormField>
+
+        <!-- Actions -->
+        <div class="flex items-center justify-between pt-4 border-t">
+          <div class="flex items-center gap-2 text-sm text-muted-foreground">
+            <Globe class="h-4 w-4" />
+            <span>Public post</span>
+          </div>
+
+          <div class="flex gap-2">
+            <Button
+              v-if="replyTo"
+              type="button"
+              variant="outline"
+              @click="clearReply"
+            >
+              Cancel Reply
+            </Button>
+            <Button
+              type="submit"
+              :disabled="isPublishing || !isFormValid"
+              class="gap-2"
+            >
+              <Send class="h-4 w-4" />
+              {{ isPublishing ? 'Publishing...' : 'Publish Note' }}
+            </Button>
+          </div>
+        </div>
+      </form>
+    </CardContent>
+  </Card>
+</template>
+
+<script setup lang="ts">
+import { ref, computed, watch } from 'vue'
+import { useForm } from 'vee-validate'
+import { toTypedSchema } from '@vee-validate/zod'
+import * as z from 'zod'
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card'
+import { Button } from '@/components/ui/button'
+import { Badge } from '@/components/ui/badge'
+import { Input } from '@/components/ui/input'
+import { Textarea } from '@/components/ui/textarea'
+import {
+  FormControl,
+  FormDescription,
+  FormField,
+  FormItem,
+  FormLabel,
+  FormMessage,
+} from '@/components/ui/form'
+import { Edit3, Send, Globe, Reply, X } from 'lucide-vue-next'
+import { injectService, SERVICE_TOKENS } from '@/core/di-container'
+import { useToast } from '@/core/composables/useToast'
+import { finalizeEvent, type EventTemplate } from 'nostr-tools'
+
+export interface ReplyToNote {
+  id: string
+  content: string
+  pubkey: string
+}
+
+interface Props {
+  replyTo?: ReplyToNote
+}
+
+interface Emits {
+  (e: 'note-published', noteId: string): void
+  (e: 'clear-reply'): void
+  (e: 'close'): void
+}
+
+const props = defineProps<Props>()
+const emit = defineEmits<Emits>()
+
+// Services
+const relayHub = injectService(SERVICE_TOKENS.RELAY_HUB)
+const authService = injectService(SERVICE_TOKENS.AUTH_SERVICE)
+const toast = useToast()
+
+// Form state
+const isPublishing = ref(false)
+const mentions = ref<string[]>([])
+const newMention = ref('')
+
+// Form schema
+const formSchema = toTypedSchema(z.object({
+  content: z.string()
+    .min(1, "Content is required")
+    .max(280, "Content must be 280 characters or less"),
+  mentions: z.array(z.string()).optional()
+}))
+
+// Form setup
+const form = useForm({
+  validationSchema: formSchema,
+  initialValues: {
+    content: '',
+    mentions: []
+  }
+})
+
+const { values, meta, resetForm, setFieldValue } = form
+
+// Computed properties
+const isFormValid = computed(() => meta.value.valid && values.content.trim().length > 0)
+const characterCount = computed(() => values.content?.length || 0)
+
+// Watch mentions array and sync with form
+watch(mentions, (newMentions) => {
+  setFieldValue('mentions', newMentions)
+}, { deep: true })
+
+// Methods
+const formatPubkey = (pubkey: string): string => {
+  if (pubkey.startsWith('npub')) {
+    return pubkey.slice(0, 12) + '...'
+  }
+  return pubkey.slice(0, 8) + '...' + pubkey.slice(-4)
+}
+
+const addMention = () => {
+  const mention = newMention.value.trim()
+  if (mention && !mentions.value.includes(mention)) {
+    // Basic validation for pubkey format
+    if (mention.startsWith('npub') || (mention.length === 64 && /^[0-9a-f]+$/i.test(mention))) {
+      mentions.value.push(mention)
+      newMention.value = ''
+    } else {
+      toast.error("Invalid pubkey format - please use npub format or 64-character hex pubkey")
+    }
+  }
+}
+
+const removeMention = (index: number) => {
+  mentions.value.splice(index, 1)
+}
+
+const clearReply = () => {
+  emit('clear-reply')
+}
+
+// Convert npub to hex if needed
+const convertPubkeyToHex = (pubkey: string): string => {
+  if (pubkey.startsWith('npub')) {
+    try {
+      // This would need proper bech32 decoding - for now return as is
+      // In a real implementation, use nostr-tools nip19.decode
+      return pubkey // Placeholder - needs proper conversion
+    } catch {
+      return pubkey
+    }
+  }
+  return pubkey
+}
+
+// Helper function to convert hex string to Uint8Array
+const hexToUint8Array = (hex: string): Uint8Array => {
+  const bytes = new Uint8Array(hex.length / 2)
+  for (let i = 0; i < hex.length; i += 2) {
+    bytes[i / 2] = parseInt(hex.substr(i, 2), 16)
+  }
+  return bytes
+}
+
+// Submit handler
+const onSubmit = form.handleSubmit(async (values) => {
+  if (!authService?.isAuthenticated.value || !authService?.user.value) {
+    toast.error("Please sign in to publish notes")
+    return
+  }
+
+  if (!relayHub?.isConnected.value) {
+    toast.error("Not connected to Nostr relays")
+    return
+  }
+
+  const userPubkey = authService.user.value.pubkey
+  const userPrivkey = authService.user.value.prvkey
+
+  if (!userPubkey || !userPrivkey) {
+    toast.error("User keys not available - please sign in again")
+    return
+  }
+
+  isPublishing.value = true
+
+  try {
+    // Build tags array
+    const tags: string[][] = []
+
+    // Add reply tags if replying
+    if (props.replyTo) {
+      tags.push(['e', props.replyTo.id, '', 'reply'])
+      tags.push(['p', props.replyTo.pubkey])
+    }
+
+    // Add mention tags
+    mentions.value.forEach(mention => {
+      const hexPubkey = convertPubkeyToHex(mention)
+      tags.push(['p', hexPubkey])
+    })
+
+    // Create note event template
+    const eventTemplate: EventTemplate = {
+      kind: 1,
+      content: values.content.trim(),
+      tags,
+      created_at: Math.floor(Date.now() / 1000)
+    }
+
+    console.log('Creating note event:', eventTemplate)
+
+    // Sign the event
+    const privkeyBytes = hexToUint8Array(userPrivkey)
+    const signedEvent = finalizeEvent(eventTemplate, privkeyBytes)
+
+    console.log('Publishing signed note:', signedEvent)
+
+    // Publish the note
+    const result = await relayHub.publishEvent(signedEvent)
+
+    toast.success(`Note published to ${result.success}/${result.total} relays!`)
+
+    // Reset form
+    resetForm()
+    mentions.value = []
+
+    // Emit success event
+    emit('note-published', signedEvent.id)
+
+    console.log('Note published with ID:', signedEvent.id)
+
+  } catch (error) {
+    console.error('Failed to publish note:', error)
+    toast.error(error instanceof Error ? error.message : "Failed to publish note")
+  } finally {
+    isPublishing.value = false
+  }
+})
+</script>
+
+<style scoped>
+.resize-y {
+  resize: vertical;
+}
+</style>

src/pages/Home.vue

@@ -1,33 +1,93 @@
 <template>
-  <div class="w-full px-4 sm:px-6 lg:px-8 xl:px-12 2xl:px-16 py-8 space-y-6">
+  <div class="flex flex-col h-screen bg-background">
     <PWAInstallPrompt auto-show />
     <!-- TODO: Implement push notifications properly - currently commenting out admin notifications dialog -->
     <!-- <NotificationPermission auto-show /> -->
 
-    <!-- Feed Filter Controls -->
+    <!-- Compact Header with Filters Toggle (Mobile) -->
-    <Card>
+    <div class="sticky top-0 z-40 bg-background/95 backdrop-blur supports-[backdrop-filter]:bg-background/60 border-b">
-      <CardHeader>
+      <div class="flex items-center justify-between px-4 py-2 sm:px-6">
-        <CardTitle class="flex items-center gap-2">
+        <h1 class="text-lg font-semibold">Feed</h1>
-          <Filter class="h-5 w-5" />
+        <div class="flex items-center gap-2">
-          Content Filters
+          <!-- Active Filter Indicator -->
-        </CardTitle>
+          <div class="flex items-center gap-1 text-xs text-muted-foreground">
-        <CardDescription>
+            <span v-if="activeFilterCount > 0">{{ activeFilterCount }} filters</span>
-          Choose what types of content you want to see in your feed
+            <span v-else>All content</span>
-        </CardDescription>
+          </div>
-      </CardHeader>
+          <!-- Filter Toggle Button -->
-      <CardContent>
+          <Button
-        <FeedFilters v-model="selectedFilters" :admin-pubkeys="adminPubkeys" />
+            variant="ghost"
-      </CardContent>
+            size="sm"
-    </Card>
+            @click="showFilters = !showFilters"
+            class="h-8 w-8 p-0"
+          >
+            <Filter class="h-4 w-4" />
+          </Button>
+        </div>
+      </div>
 
-    <!-- Feed Content -->
+      <!-- Collapsible Filter Panel -->
+      <div v-if="showFilters" class="border-t bg-background/95 backdrop-blur">
+        <div class="px-4 py-3 sm:px-6">
+          <FeedFilters v-model="selectedFilters" :admin-pubkeys="adminPubkeys" />
+        </div>
+      </div>
+    </div>
+
+    <!-- Main Feed Area - Takes remaining height -->
+    <div class="flex-1 overflow-hidden">
+      <!-- Collapsible Note Composer -->
+      <div v-if="showComposer || replyTo" class="border-b bg-background">
+        <div class="px-4 py-3 sm:px-6">
+          <NoteComposer
+            :reply-to="replyTo"
+            @note-published="onNotePublished"
+            @clear-reply="onClearReply"
+            @close="onCloseComposer"
+          />
+        </div>
+      </div>
+
+      <!-- Feed Content - Full height scroll -->
+      <div class="h-full">
         <NostrFeed
           :feed-type="feedType"
           :content-filters="selectedFilters"
           :admin-pubkeys="adminPubkeys"
           :key="feedKey"
+          :compact-mode="true"
+          @reply-to-note="onReplyToNote"
         />
       </div>
+    </div>
+
+    <!-- Floating Action Button for Compose -->
+    <div v-if="!showComposer && !replyTo" class="fixed bottom-6 right-6 z-50">
+      <Button
+        @click="showComposer = true"
+        size="lg"
+        class="h-14 w-14 rounded-full shadow-lg hover:shadow-xl transition-shadow"
+      >
+        <Plus class="h-6 w-6" />
+      </Button>
+    </div>
+
+    <!-- Quick Filters Bar (Mobile) -->
+    <div class="md:hidden sticky bottom-0 z-30 bg-background/95 backdrop-blur supports-[backdrop-filter]:bg-background/60 border-t">
+      <div class="flex overflow-x-auto px-4 py-2 gap-2 scrollbar-hide">
+        <Button
+          v-for="(preset, key) in quickFilterPresets"
+          :key="key"
+          :variant="isPresetActive(key) ? 'default' : 'outline'"
+          size="sm"
+          @click="setQuickFilter(key)"
+          class="whitespace-nowrap"
+        >
+          {{ preset.label }}
+        </Button>
+      </div>
+    </div>
+  </div>
 </template>
 
 <script setup lang="ts">
@@ -37,20 +97,50 @@
 // import NotificationPermission from '@/components/notifications/NotificationPermission.vue'
 import { ref, computed, watch } from 'vue'
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card'
-import { Filter } from 'lucide-vue-next'
+import { Filter, Plus } from 'lucide-vue-next'
 import PWAInstallPrompt from '@/components/pwa/PWAInstallPrompt.vue'
 import FeedFilters from '@/modules/nostr-feed/components/FeedFilters.vue'
+import NoteComposer from '@/modules/nostr-feed/components/NoteComposer.vue'
+import NostrFeed from '@/modules/nostr-feed/components/NostrFeed.vue'
 import { FILTER_PRESETS } from '@/modules/nostr-feed/config/content-filters'
 import appConfig from '@/app.config'
 import type { ContentFilter } from '@/modules/nostr-feed/services/FeedService'
+import type { ReplyToNote } from '@/modules/nostr-feed/components/NoteComposer.vue'
 
 // Get admin pubkeys from app config
 const adminPubkeys = appConfig.modules['nostr-feed']?.config?.adminPubkeys || []
 
+// UI state
+const showFilters = ref(false)
+const showComposer = ref(false)
+
 // Feed configuration
 const selectedFilters = ref<ContentFilter[]>(FILTER_PRESETS.all)
 const feedKey = ref(0) // Force feed component to re-render when filters change
 
+// Note composer state
+const replyTo = ref<ReplyToNote | undefined>()
+
+// Quick filter presets for mobile bottom bar
+const quickFilterPresets = {
+  all: { label: 'All', filters: FILTER_PRESETS.all },
+  announcements: { label: 'News', filters: FILTER_PRESETS.announcements },
+  marketplace: { label: 'Market', filters: FILTER_PRESETS.marketplace },
+  social: { label: 'Social', filters: FILTER_PRESETS.social },
+  events: { label: 'Events', filters: FILTER_PRESETS.events }
+}
+
+// Computed properties
+const activeFilterCount = computed(() => selectedFilters.value.length)
+
+const isPresetActive = (presetKey: string) => {
+  const preset = quickFilterPresets[presetKey as keyof typeof quickFilterPresets]
+  if (!preset) return false
+
+  return preset.filters.length === selectedFilters.value.length &&
+    preset.filters.every(pf => selectedFilters.value.some(sf => sf.id === pf.id))
+}
+
 // Determine feed type based on selected filters
 const feedType = computed(() => {
   if (selectedFilters.value.length === 0) return 'all'
@@ -70,4 +160,37 @@ const feedType = computed(() => {
 watch(selectedFilters, () => {
   feedKey.value++
 }, { deep: true })
+
+// Handle note composer events
+// Methods
+const setQuickFilter = (presetKey: string) => {
+  const preset = quickFilterPresets[presetKey as keyof typeof quickFilterPresets]
+  if (preset) {
+    selectedFilters.value = preset.filters
+  }
+}
+
+const onNotePublished = (noteId: string) => {
+  console.log('Note published:', noteId)
+  // Refresh the feed to show the new note
+  feedKey.value++
+  // Clear reply state and hide composer
+  replyTo.value = undefined
+  showComposer.value = false
+}
+
+const onClearReply = () => {
+  replyTo.value = undefined
+  showComposer.value = false
+}
+
+const onReplyToNote = (note: ReplyToNote) => {
+  replyTo.value = note
+  showComposer.value = true
+}
+
+const onCloseComposer = () => {
+  showComposer.value = false
+  replyTo.value = undefined
+}
 </script>