feat: community feed Vue frontend -- Pinia store + feed panel + RecipesView tab

frontend/src/components/CommunityFeedPanel.vue

@@ -0,0 +1,251 @@
+<template>
+  <div class="community-feed-panel">
+
+    <!-- Filter tabs: All / Plans / Successes / Bloopers -->
+    <div role="tablist" aria-label="Community post filters" class="filter-bar flex gap-xs mb-md">
+      <button
+        v-for="f in filters"
+        :key="f.id"
+        role="tab"
+        :aria-selected="activeFilter === f.id"
+        :tabindex="activeFilter === f.id ? 0 : -1"
+        :class="['btn', 'tab-btn', activeFilter === f.id ? 'btn-primary' : 'btn-secondary']"
+        @click="setFilter(f.id)"
+        @keydown="onFilterKeydown"
+      >{{ f.label }}</button>
+    </div>
+
+    <!-- Loading skeletons -->
+    <div
+      v-if="store.loading"
+      class="skeleton-list flex-col gap-sm"
+      aria-busy="true"
+      aria-label="Loading posts"
+    >
+      <div v-for="n in 3" :key="n" class="skeleton-card">
+        <div class="skeleton-line skeleton-line-short"></div>
+        <div class="skeleton-line skeleton-line-long mt-xs"></div>
+        <div class="skeleton-line skeleton-line-med mt-xs"></div>
+      </div>
+    </div>
+
+    <!-- Error state -->
+    <div
+      v-else-if="store.error"
+      class="error-state card"
+      role="alert"
+    >
+      <p class="text-sm text-secondary mb-sm">{{ store.error }}</p>
+      <button class="btn btn-secondary btn-sm" @click="retry">
+        Try again
+      </button>
+    </div>
+
+    <!-- Empty state -->
+    <div
+      v-else-if="store.posts.length === 0"
+      class="empty-state card text-center"
+    >
+      <p class="text-secondary mb-xs">No posts yet</p>
+      <p class="text-sm text-muted">Be the first to share a meal plan or recipe story.</p>
+    </div>
+
+    <!-- Post list -->
+    <div v-else class="post-list flex-col gap-sm">
+      <CommunityPostCard
+        v-for="post in store.posts"
+        :key="post.slug"
+        :post="post"
+        @fork="handleFork"
+      />
+    </div>
+
+    <!-- Fork success toast -->
+    <Transition name="toast-fade">
+      <div
+        v-if="forkFeedback"
+        class="fork-toast status-badge status-success"
+        role="status"
+        aria-live="polite"
+      >
+        {{ forkFeedback }}
+      </div>
+    </Transition>
+
+    <!-- Fork error toast -->
+    <Transition name="toast-fade">
+      <div
+        v-if="forkError"
+        class="fork-toast status-badge status-error"
+        role="alert"
+        aria-live="assertive"
+      >
+        {{ forkError }}
+      </div>
+    </Transition>
+
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, onMounted } from 'vue'
+import { useCommunityStore } from '../stores/community'
+import CommunityPostCard from './CommunityPostCard.vue'
+
+const emit = defineEmits<{
+  'plan-forked': [payload: { plan_id: number; week_start: string }]
+}>()
+
+const store = useCommunityStore()
+
+const activeFilter = ref('all')
+
+const filters = [
+  { id: 'all',            label: 'All' },
+  { id: 'plan',           label: 'Plans' },
+  { id: 'recipe_success', label: 'Successes' },
+  { id: 'recipe_blooper', label: 'Bloopers' },
+]
+
+const filterIds = filters.map((f) => f.id)
+
+function onFilterKeydown(e: KeyboardEvent) {
+  const current = filterIds.indexOf(activeFilter.value)
+  if (e.key === 'ArrowRight') {
+    e.preventDefault()
+    setFilter(filterIds[(current + 1) % filterIds.length]!)
+  } else if (e.key === 'ArrowLeft') {
+    e.preventDefault()
+    setFilter(filterIds[(current - 1 + filterIds.length) % filterIds.length]!)
+  }
+}
+
+async function setFilter(filterId: string) {
+  activeFilter.value = filterId
+  await store.fetchPosts(filterId === 'all' ? undefined : filterId)
+}
+
+async function retry() {
+  await store.fetchPosts(activeFilter.value === 'all' ? undefined : activeFilter.value)
+}
+
+const forkFeedback = ref<string | null>(null)
+const forkError = ref<string | null>(null)
+
+function showToast(msg: string, type: 'success' | 'error') {
+  if (type === 'success') {
+    forkFeedback.value = msg
+    setTimeout(() => { forkFeedback.value = null }, 3000)
+  } else {
+    forkError.value = msg
+    setTimeout(() => { forkError.value = null }, 4000)
+  }
+}
+
+async function handleFork(slug: string) {
+  try {
+    const result = await store.forkPost(slug)
+    showToast('Plan added to your week.', 'success')
+    emit('plan-forked', { plan_id: result.plan_id, week_start: result.week_start })
+  } catch (err: unknown) {
+    showToast(err instanceof Error ? err.message : 'Could not fork this plan.', 'error')
+  }
+}
+
+onMounted(async () => {
+  if (store.posts.length === 0) {
+    await store.fetchPosts()
+  }
+})
+</script>
+
+<style scoped>
+.community-feed-panel {
+  position: relative;
+}
+
+.filter-bar {
+  border-bottom: 1px solid var(--color-border);
+  padding-bottom: var(--spacing-sm);
+}
+
+.tab-btn {
+  border-radius: var(--radius-md) var(--radius-md) 0 0;
+  border-bottom: none;
+}
+
+/* Loading skeletons */
+.skeleton-card {
+  background: var(--color-bg-card);
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-lg);
+  padding: var(--spacing-md);
+  overflow: hidden;
+}
+
+.skeleton-line {
+  height: 12px;
+  border-radius: var(--radius-sm);
+  background: var(--color-bg-elevated);
+  animation: shimmer 1.4s ease-in-out infinite;
+}
+
+.skeleton-line-short { width: 35%; }
+.skeleton-line-med   { width: 60%; }
+.skeleton-line-long  { width: 90%; }
+
+@keyframes shimmer {
+  0%   { opacity: 0.6; }
+  50%  { opacity: 1.0; }
+  100% { opacity: 0.6; }
+}
+
+/* Empty / error states */
+.empty-state {
+  padding: var(--spacing-xl) var(--spacing-lg);
+}
+
+.error-state {
+  padding: var(--spacing-md);
+}
+
+/* Post list */
+.post-list {
+  padding-top: var(--spacing-sm);
+}
+
+/* Toast */
+.fork-toast {
+  position: fixed;
+  bottom: calc(72px + var(--spacing-md));
+  left: 50%;
+  transform: translateX(-50%);
+  z-index: 300;
+  white-space: nowrap;
+  box-shadow: var(--shadow-lg);
+}
+
+@media (min-width: 769px) {
+  .fork-toast {
+    bottom: var(--spacing-lg);
+  }
+}
+
+.toast-fade-enter-active,
+.toast-fade-leave-active {
+  transition: opacity 0.3s ease, transform 0.3s ease;
+}
+
+.toast-fade-enter-from,
+.toast-fade-leave-to {
+  opacity: 0;
+  transform: translateX(-50%) translateY(8px);
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .skeleton-line {
+    animation: none;
+    opacity: 0.7;
+  }
+}
+</style>

frontend/src/components/CommunityPostCard.vue

@@ -0,0 +1,172 @@
+<template>
+  <article class="community-post-card" :class="`post-type-${post.post_type}`">
+    <!-- Header row: type badge + date -->
+    <div class="card-header flex-between gap-sm mb-xs">
+      <span
+        class="post-type-badge status-badge"
+        :class="typeBadgeClass"
+        :aria-label="`Post type: ${typeLabel}`"
+      >{{ typeLabel }}</span>
+      <time
+        class="post-date text-xs text-muted"
+        :datetime="post.published"
+        :title="fullDate"
+      >{{ shortDate }}</time>
+    </div>
+
+    <!-- Title -->
+    <h3 class="post-title text-base font-semibold mb-xs">{{ post.title }}</h3>
+
+    <!-- Author -->
+    <p class="post-author text-xs text-muted mb-xs">
+      by {{ post.pseudonym }}
+    </p>
+
+    <!-- Description (if present) -->
+    <p v-if="post.description" class="post-description text-sm text-secondary mb-sm">
+      {{ post.description }}
+    </p>
+
+    <!-- Dietary tag pills -->
+    <div
+      v-if="post.dietary_tags.length > 0"
+      class="tag-row flex flex-wrap gap-xs mb-sm"
+      role="list"
+      aria-label="Dietary tags"
+    >
+      <span
+        v-for="tag in post.dietary_tags"
+        :key="tag"
+        class="status-badge status-success tag-pill"
+        role="listitem"
+      >{{ tag }}</span>
+    </div>
+
+    <!-- Fork button (plan posts only) -->
+    <div v-if="post.post_type === 'plan'" class="card-actions mt-sm">
+      <button
+        class="btn btn-primary btn-sm btn-fork"
+        :aria-label="`Fork ${post.title} to my meal plan`"
+        @click="$emit('fork', post.slug)"
+      >
+        Fork to my plan
+      </button>
+    </div>
+  </article>
+</template>
+
+<script setup lang="ts">
+import { computed } from 'vue'
+import type { CommunityPost } from '../stores/community'
+
+const props = defineProps<{
+  post: CommunityPost
+}>()
+
+defineEmits<{
+  fork: [slug: string]
+}>()
+
+const typeLabel = computed(() => {
+  switch (props.post.post_type) {
+    case 'plan':           return 'Meal Plan'
+    case 'recipe_success': return 'Success'
+    case 'recipe_blooper': return 'Blooper'
+    default:               return props.post.post_type
+  }
+})
+
+const typeBadgeClass = computed(() => {
+  switch (props.post.post_type) {
+    case 'plan':           return 'status-info'
+    case 'recipe_success': return 'status-success'
+    case 'recipe_blooper': return 'status-warning'
+    default:               return 'status-info'
+  }
+})
+
+const shortDate = computed(() => {
+  try {
+    return new Date(props.post.published).toLocaleDateString('en-US', {
+      month: 'short',
+      day: 'numeric',
+    })
+  } catch {
+    return ''
+  }
+})
+
+const fullDate = computed(() => {
+  try {
+    return new Date(props.post.published).toLocaleString()
+  } catch {
+    return props.post.published
+  }
+})
+</script>
+
+<style scoped>
+.community-post-card {
+  background: var(--color-bg-card);
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-lg);
+  padding: var(--spacing-md);
+  transition: box-shadow 0.18s ease;
+}
+
+.community-post-card:hover {
+  box-shadow: var(--shadow-md);
+}
+
+.post-type-plan           { border-left: 3px solid var(--color-info); }
+.post-type-recipe_success { border-left: 3px solid var(--color-success); }
+.post-type-recipe_blooper { border-left: 3px solid var(--color-warning); }
+
+.card-header {
+  align-items: center;
+}
+
+.post-type-badge,
+.post-date {
+  flex-shrink: 0;
+}
+
+.post-title {
+  margin: 0;
+  color: var(--color-text-primary);
+  line-height: 1.3;
+}
+
+.post-author,
+.post-description {
+  margin: 0;
+}
+
+.post-description {
+  line-height: 1.5;
+}
+
+.tag-pill {
+  text-transform: lowercase;
+}
+
+.card-actions {
+  display: flex;
+  justify-content: flex-end;
+}
+
+.btn-fork {
+  min-width: 120px;
+}
+
+@media (max-width: 480px) {
+  .community-post-card {
+    padding: var(--spacing-sm);
+    border-radius: var(--radius-md);
+  }
+
+  .btn-fork {
+    width: 100%;
+  }
+}
+</style>

frontend/src/components/RecipesView.vue

@@ -32,6 +32,14 @@
       @open-recipe="openRecipeById"
     />
 
+    <!-- Community tab -->
+    <CommunityFeedPanel
+      v-else-if="activeTab === 'community'"
+      role="tabpanel"
+      aria-labelledby="tab-community"
+      @plan-forked="onPlanForked"
+    />
+
     <!-- Find tab (existing search UI) -->
     <div v-else role="tabpanel" aria-labelledby="tab-find">
     <!-- Controls Panel -->
@@ -554,6 +562,7 @@ import { useInventoryStore } from '../stores/inventory'
 import RecipeDetailPanel from './RecipeDetailPanel.vue'
 import RecipeBrowserPanel from './RecipeBrowserPanel.vue'
 import SavedRecipesPanel from './SavedRecipesPanel.vue'
+import CommunityFeedPanel from './CommunityFeedPanel.vue'
 import type { RecipeSuggestion, GroceryLink } from '../services/api'
 import { recipesAPI } from '../services/api'
 
@@ -561,16 +570,17 @@ const recipesStore = useRecipesStore()
 const inventoryStore = useInventoryStore()
 
 // Tab state
-type TabId = 'find' | 'browse' | 'saved'
+type TabId = 'find' | 'browse' | 'saved' | 'community'
 const tabs: Array<{ id: TabId; label: string }> = [
-  { id: 'find',   label: 'Find' },
+  { id: 'find',      label: 'Find' },
-  { id: 'browse', label: 'Browse' },
+  { id: 'browse',    label: 'Browse' },
-  { id: 'saved',  label: 'Saved' },
+  { id: 'saved',     label: 'Saved' },
+  { id: 'community', label: 'Community' },
 ]
 const activeTab = ref<TabId>('find')
 
 function onTabKeydown(e: KeyboardEvent) {
-  const tabIds: TabId[] = ['find', 'browse', 'saved']
+  const tabIds: TabId[] = ['find', 'browse', 'saved', 'community']
   const current = tabIds.indexOf(activeTab.value)
   if (e.key === 'ArrowRight') {
     e.preventDefault()
@@ -581,6 +591,11 @@ function onTabKeydown(e: KeyboardEvent) {
   }
 }
 
+// Community tab: navigate to Find tab after a plan fork (full plan view deferred to Task 9)
+function onPlanForked(_payload: { plan_id: number; week_start: string }) {
+  activeTab.value = 'find'
+}
+
 // Browser/saved tab recipe detail panel (fetches full recipe from API)
 const browserSelectedRecipe = ref<RecipeSuggestion | null>(null)
 

frontend/src/stores/community.ts

@@ -0,0 +1,98 @@
+/**
+ * Community Store
+ *
+ * Manages community post feed state and fork actions using Pinia.
+ * Follows the composition store pattern established in recipes.ts.
+ */
+
+import { defineStore } from 'pinia'
+import { ref } from 'vue'
+import api from '../services/api'
+
+// ========== Types ==========
+
+export interface CommunityPostSlot {
+  day: string
+  meal_type: string
+  recipe_id: number
+}
+
+export interface ElementProfiles {
+  seasoning_score: number | null
+  richness_score: number | null
+  brightness_score: number | null
+  depth_score: number | null
+  aroma_score: number | null
+  structure_score: number | null
+  texture_profile: string | null
+}
+
+export interface CommunityPost {
+  slug: string
+  pseudonym: string
+  post_type: 'plan' | 'recipe_success' | 'recipe_blooper'
+  published: string
+  title: string
+  description: string | null
+  photo_url: string | null
+  slots: CommunityPostSlot[]
+  recipe_id: number | null
+  recipe_name: string | null
+  level: number | null
+  outcome_notes: string | null
+  element_profiles: ElementProfiles
+  dietary_tags: string[]
+  allergen_flags: string[]
+  flavor_molecules: string[]
+  fat_pct: number | null
+  protein_pct: number | null
+  moisture_pct: number | null
+}
+
+export interface ForkResult {
+  plan_id: number
+  week_start: string
+  forked_from: string
+}
+
+// ========== Store ==========
+
+export const useCommunityStore = defineStore('community', () => {
+  const posts = ref<CommunityPost[]>([])
+  const loading = ref(false)
+  const error = ref<string | null>(null)
+  const currentFilter = ref<string | null>(null)
+
+  async function fetchPosts(postType?: string) {
+    loading.value = true
+    error.value = null
+    currentFilter.value = postType ?? null
+
+    try {
+      const params: Record<string, string | number> = { page: 1, page_size: 40 }
+      if (postType) {
+        params.post_type = postType
+      }
+      const response = await api.get<{ posts: CommunityPost[] }>('/community/posts', { params })
+      posts.value = response.data.posts
+    } catch (err: unknown) {
+      error.value = err instanceof Error ? err.message : 'Could not load community posts.'
+    } finally {
+      loading.value = false
+    }
+  }
+
+  async function forkPost(slug: string): Promise<ForkResult> {
+    const response = await api.post<ForkResult>(`/community/posts/${slug}/fork`)
+    return response.data
+  }
+
+  return {
+    posts,
+    loading,
+    error,
+    currentFilter,
+    fetchPosts,
+    forkPost,
+  }
+})