diff --git a/frontend/src/components/posts/PostCard.vue b/frontend/src/components/posts/PostCard.vue
index a45f0a5..29aa76d 100644
--- a/frontend/src/components/posts/PostCard.vue
+++ b/frontend/src/components/posts/PostCard.vue
@@ -1,29 +1,18 @@
 <template>
-  <v-card
-    :class="['fc-post-card', expanded && 'fc-post-card--expanded']"
-    variant="outlined"
-    :tabindex="expanded ? -1 : 0"
-    @click="onCardClick"
-    @keydown.enter="onCardClick"
-  >
+  <v-card class="fc-post-card" variant="outlined">
     <div class="fc-post-card__head">
-      <!-- Posts with no live subscription have source=null (alembic
-           0030); show a "filesystem import" affordance instead of a
-           platform chip. -->
+      <!-- Posts with no live subscription have source=null (alembic 0030);
+           show a "filesystem import" affordance instead of a platform chip. -->
       <v-chip size="x-small" variant="tonal">
         {{ post.source?.platform ?? 'filesystem import' }}
       </v-chip>
       <RouterLink
         :to="{ name: 'artist', params: { slug: post.artist.slug } }"
         class="fc-post-card__artist"
-        @click.stop
       >{{ post.artist.name }}</RouterLink>
       <span class="fc-post-card__date" :title="absoluteDate">{{ relativeDate }}</span>
-      <span v-if="expanded && images.length" class="fc-post-card__meta">
-        · {{ images.length }} image{{ images.length === 1 ? '' : 's' }}
-      </span>
-      <span v-if="expanded && attachments.length" class="fc-post-card__meta">
-        · {{ attachments.length }} attachment{{ attachments.length === 1 ? '' : 's' }}
+      <span v-if="totalImages" class="fc-post-card__meta">
+        · {{ totalImages }} image{{ totalImages === 1 ? '' : 's' }}
       </span>
       <v-spacer />
       <v-btn
@@ -31,140 +20,108 @@
         :href="post.post_url" target="_blank" rel="noopener"
         icon="mdi-open-in-new" size="x-small" variant="text"
         :aria-label="`open original post on ${post.source?.platform ?? 'web'}`"
-        @click.stop
-      />
-      <v-btn
-        :icon="expanded ? 'mdi-chevron-up' : 'mdi-chevron-down'"
-        size="x-small" variant="text"
-        :aria-label="expanded ? 'Collapse post' : 'Expand post'"
-        @click.stop="toggleExpanded"
       />
     </div>
 
-    <!-- Compact body: collapsed card. Hero + thumb rail + truncated text. -->
-    <div v-if="!expanded" class="fc-post-card__body">
+    <div class="fc-post-card__body">
       <div class="fc-post-card__media">
         <template v-if="images.length">
-          <div class="fc-post-card__hero">
-            <img :src="hero.thumbnail_url" :alt="`hero thumbnail`" loading="lazy" />
-          </div>
-          <div v-if="rail.length" class="fc-post-card__rail">
-            <div v-for="t in rail" :key="t.image_id" class="fc-post-card__rail-cell">
-              <img :src="t.thumbnail_url" :alt="`thumbnail`" loading="lazy" />
-            </div>
-            <div v-if="moreCount > 0" class="fc-post-card__rail-more">
-              +{{ moreCount }}
-            </div>
+          <!-- Images open the post-scoped image modal (look bigger + arrow
+               through ALL the post's images) — the card never expands. -->
+          <button
+            type="button" class="fc-post-card__hero"
+            aria-label="Open images" @click="openModal(hero.image_id)"
+          >
+            <img :src="hero.thumbnail_url" alt="hero thumbnail" loading="lazy" />
+          </button>
+          <div v-if="rail.length || moreCount" class="fc-post-card__rail">
+            <button
+              v-for="t in rail" :key="t.image_id" type="button"
+              class="fc-post-card__rail-cell"
+              aria-label="Open image" @click="openModal(t.image_id)"
+            >
+              <img :src="t.thumbnail_url" alt="thumbnail" loading="lazy" />
+            </button>
+            <button
+              v-if="moreCount > 0" type="button"
+              class="fc-post-card__rail-more"
+              :aria-label="`Open ${moreCount} more images`"
+              @click="openModalAtMore"
+            >+{{ moreCount }}</button>
           </div>
         </template>
         <PostEmptyThumbs v-else />
       </div>
 
       <div class="fc-post-card__text">
-        <h3 v-if="plainTitle" class="fc-post-card__title">
-          {{ plainTitle }}
-        </h3>
+        <h3 v-if="plainTitle" class="fc-post-card__title">{{ plainTitle }}</h3>
         <h3 v-else class="fc-post-card__title fc-post-card__title--missing">
           Post {{ post.external_post_id }}
         </h3>
 
-        <p v-if="post.description_plain" class="fc-post-card__desc">
-          {{ post.description_plain }}
-        </p>
+        <p
+          v-if="hasDescription" ref="descEl"
+          class="fc-post-card__desc"
+          :class="{ 'fc-post-card__desc--clamped': !descExpanded }"
+        >{{ descText }}</p>
         <p v-else class="fc-post-card__desc fc-post-card__desc--missing">
           (no description)
         </p>
 
-        <div v-if="post.attachments?.length" class="fc-post-card__atts">
-          <v-icon size="small" class="fc-post-card__att-icon">mdi-paperclip</v-icon>
-          {{ post.attachments.length }} attachment{{ post.attachments.length === 1 ? '' : 's' }}
-        </div>
-      </div>
-    </div>
+        <!-- The ONLY in-place expansion: the post text, and only when it's
+             actually truncated (server flag or a CSS-clamp overflow). -->
+        <button
+          v-if="canExpand" type="button" class="fc-post-card__more"
+          @click="toggleDesc"
+        >{{ descExpanded ? 'Show less' : 'Show more' }}</button>
 
-    <!-- Expanded body: title, full mosaic, full sanitized HTML description,
-         attachments. Lazy-loaded detail via getPostFull. -->
-    <div v-else class="fc-post-card__expanded">
-      <h2 v-if="plainTitle" class="fc-post-card__title-full">
-        {{ plainTitle }}
-      </h2>
-      <h2 v-else class="fc-post-card__title-full fc-post-card__title--missing">
-        Post {{ post.external_post_id }}
-      </h2>
-
-      <section v-if="images.length" class="fc-post-card__sec">
-        <PostImageGrid :thumbnails="images" />
-        <div v-if="!detailLoaded" class="fc-post-card__loading-hint">
-          Loading full image list…
-        </div>
-      </section>
-
-      <section v-if="descriptionHtml" class="fc-post-card__sec">
-        <div class="fc-post-card__desc-full" v-html="descriptionHtml" />
-      </section>
-      <section v-else-if="detailLoaded" class="fc-post-card__sec">
-        <p class="fc-post-card__desc fc-post-card__desc--missing">(no description)</p>
-      </section>
-
-      <section v-if="attachments.length" class="fc-post-card__sec">
-        <h3 class="fc-post-card__h3">Attachments</h3>
-        <div class="fc-post-card__atts-full">
+        <div v-if="attachments.length" class="fc-post-card__atts">
           <a
             v-for="att in attachments" :key="att.id"
-            :href="att.download_url" download
-            class="fc-post-card__att"
-            @click.stop
+            :href="att.download_url" download class="fc-post-card__att"
           >
             <v-icon size="small" class="fc-post-card__att-icon">mdi-paperclip</v-icon>
             <span>{{ att.original_filename }}</span>
             <span class="fc-post-card__att-size">({{ formatBytes(att.size_bytes) }})</span>
           </a>
         </div>
-      </section>
+      </div>
     </div>
   </v-card>
 </template>
 
 <script setup>
-import { computed, ref } from 'vue'
+import { computed, nextTick, onBeforeUnmount, onMounted, ref } from 'vue'
 import { RouterLink } from 'vue-router'
 
+import { useModalStore } from '../../stores/modal.js'
 import { usePostsStore } from '../../stores/posts.js'
-import { sanitizeHtml, toPlainText } from '../../utils/htmlSanitize.js'
+import { toPlainText } from '../../utils/htmlSanitize.js'
 import PostEmptyThumbs from './PostEmptyThumbs.vue'
-import PostImageGrid from './PostImageGrid.vue'
 
 const props = defineProps({
   post: { type: Object, required: true },
 })
 
 const postsStore = usePostsStore()
+const modal = useModalStore()
 
-// Per-card expand state. No global modal — each PostCard owns its own
-// view-mode and lazy-loaded detail.
-const expanded = ref(false)
+// Full detail (uncapped thumbnails + full description), fetched lazily — only
+// when opening the modal for a post with >6 images, or expanding a
+// server-truncated description.
 const detail = ref(null)
-const detailLoaded = ref(false)
-const detailError = ref(null)
 
-// When expanded + detail loaded, prefer the uncapped detail thumbnails +
-// full description. Falls back to feed shape if detail fetch is in flight
-// or failed.
-const merged = computed(() => detail.value || props.post)
-const images = computed(() => merged.value.thumbnails || [])
-const attachments = computed(() => merged.value.attachments || [])
-
-// Titles can arrive as stored HTML (e.g. "<strong>…</strong>"); render as
-// plain text — the CSS makes the title bold.
+const attachments = computed(() => props.post.attachments || [])
+const images = computed(() => props.post.thumbnails || [])
+const totalImages = computed(() => images.value.length + (props.post.thumbnails_more || 0))
 const plainTitle = computed(() => toPlainText(props.post.post_title))
 
-// Compact-view hero+rail derived from the feed-shape (capped 6).
-const hero = computed(() => props.post.thumbnails?.[0])
-const rail = computed(() => (props.post.thumbnails || []).slice(1, 4))
+const hero = computed(() => images.value[0])
+const rail = computed(() => images.value.slice(1, 4))
+const visibleCount = computed(() => (images.value.length ? 1 + rail.value.length : 0))
 const moreCount = computed(() => {
   const more = props.post.thumbnails_more || 0
-  const railLen = rail.value.length
-  const extraShown = Math.max(0, (props.post.thumbnails?.length || 0) - 1 - railLen)
+  const extraShown = Math.max(0, images.value.length - visibleCount.value)
   return more + extraShown
 })
 
@@ -180,49 +137,77 @@ const relativeDate = computed(() => {
   return new Date(sortDateIso.value).toLocaleDateString()
 })
 
-const descriptionHtml = computed(() => {
-  // Detail endpoint returns description_full as plain text (the service
-  // uses html_to_plain on the stored description). Render plain text in
-  // <p> wrappers; sanitize defensively in case the backend ever returns
-  // raw HTML.
-  const raw = merged.value.description_full || merged.value.description_plain
-  if (!raw) return ''
-  if (/[<>]/.test(raw)) return sanitizeHtml(raw)
-  const esc = raw
-    .replace(/&/g, '&amp;')
-    .replace(/</g, '&lt;')
-    .replace(/>/g, '&gt;')
-  return esc
-    .split(/\n\s*\n/)
-    .map((p) => `<p>${p.replace(/\n/g, '<br>')}</p>`)
-    .join('')
-})
-
-async function loadDetailIfNeeded () {
-  if (detailLoaded.value || detail.value) return
-  try {
-    detail.value = await postsStore.getPostFull(props.post.id)
-    detailLoaded.value = true
-  } catch (e) {
-    detailError.value = e.message
-    // Leave merged on feed-shape; the card still renders the truncated
-    // body so the operator isn't staring at a blank panel.
+// --- images → post-scoped modal ---------------------------------------
+async function fullImageIds () {
+  // Feed caps thumbnails at 6; load detail for the complete id list only when
+  // there are more, so the modal can arrow through ALL of the post's images.
+  if ((props.post.thumbnails_more || 0) === 0) {
+    return images.value.map((t) => t.image_id)
   }
+  if (!detail.value) {
+    try {
+      detail.value = await postsStore.getPostFull(props.post.id)
+    } catch { /* fall back to the capped feed list */ }
+  }
+  return (detail.value?.thumbnails || images.value).map((t) => t.image_id)
 }
 
-function toggleExpanded () {
-  expanded.value = !expanded.value
-  if (expanded.value) loadDetailIfNeeded()
+async function openModal (imageId) {
+  modal.open(imageId, { postImageIds: await fullImageIds() })
 }
 
-function onCardClick (e) {
-  // Inner interactive elements use @click.stop so they never reach here.
-  // Whole-card click expands a collapsed card; collapsing is chevron-only
-  // so a mosaic-image click on an expanded card can never accidentally
-  // collapse the surrounding card.
-  if (expanded.value) return
-  expanded.value = true
-  loadDetailIfNeeded()
+async function openModalAtMore () {
+  const ids = await fullImageIds()
+  const first = ids[visibleCount.value] ?? ids[0]
+  if (first != null) modal.open(first, { postImageIds: ids })
+}
+
+// --- description "Show more" (text-only, in place, only when truncated) ----
+const descExpanded = ref(false)
+const cssOverflow = ref(false)
+const descEl = ref(null)
+
+const hasDescription = computed(() => !!props.post.description_plain)
+const fullDescription = computed(() => detail.value?.description_full || null)
+const descText = computed(() =>
+  descExpanded.value
+    ? (fullDescription.value || props.post.description_plain)
+    : props.post.description_plain,
+)
+// Show the toggle iff the server truncated the text OR the clamp is cutting it.
+const canExpand = computed(
+  () => props.post.description_truncated === true || cssOverflow.value,
+)
+
+function measureOverflow () {
+  const el = descEl.value
+  cssOverflow.value = !!el && el.scrollHeight > el.clientHeight + 1
+}
+
+let ro = null
+onMounted(() => {
+  nextTick(measureOverflow)
+  // Re-measure when the card resizes (the container-query clamp differs by
+  // width). Guarded for happy-dom / older runtimes without ResizeObserver.
+  if (typeof ResizeObserver !== 'undefined' && descEl.value) {
+    ro = new ResizeObserver(() => { if (!descExpanded.value) measureOverflow() })
+    ro.observe(descEl.value)
+  }
+})
+onBeforeUnmount(() => { if (ro) { ro.disconnect(); ro = null } })
+
+async function toggleDesc () {
+  if (!descExpanded.value) {
+    if (props.post.description_truncated && !fullDescription.value && !detail.value) {
+      try {
+        detail.value = await postsStore.getPostFull(props.post.id)
+      } catch { /* render the truncated text rather than nothing */ }
+    }
+    descExpanded.value = true
+  } else {
+    descExpanded.value = false
+    nextTick(measureOverflow)
+  }
 }
 
 function formatBytes (n) {
@@ -239,20 +224,6 @@ function formatBytes (n) {
   padding: 1rem;
   margin-bottom: 1rem;
   container-type: inline-size;
-  transition: border-color 0.15s ease;
-}
-.fc-post-card:not(.fc-post-card--expanded) {
-  cursor: pointer;
-}
-.fc-post-card:not(.fc-post-card--expanded):hover {
-  border-color: rgb(var(--v-theme-accent));
-}
-.fc-post-card:focus-visible {
-  outline: 2px solid rgb(var(--v-theme-accent));
-  outline-offset: 2px;
-}
-.fc-post-card--expanded {
-  border-color: rgb(var(--v-theme-accent) / 0.6);
 }
 
 .fc-post-card__head {
@@ -273,7 +244,6 @@ function formatBytes (n) {
 .fc-post-card__date,
 .fc-post-card__meta { white-space: nowrap; }
 
-/* ---- COMPACT BODY ---- */
 .fc-post-card__body {
   display: flex;
   flex-direction: column;
@@ -288,6 +258,13 @@ function formatBytes (n) {
   .fc-post-card__text  { flex: 1 1 0; min-width: 0; }
 }
 
+/* Image tiles are buttons (open the post-scoped modal) — reset button chrome. */
+.fc-post-card__hero,
+.fc-post-card__rail-cell,
+.fc-post-card__rail-more {
+  display: block; padding: 0; border: 0; background: none;
+  cursor: pointer;
+}
 .fc-post-card__hero {
   width: 100%;
   aspect-ratio: 16 / 10;
@@ -297,10 +274,13 @@ function formatBytes (n) {
 .fc-post-card__hero img {
   width: 100%; height: 100%;
   object-fit: cover; display: block;
+  transition: transform 0.2s ease, filter 0.2s ease;
 }
+.fc-post-card__hero:hover img,
+.fc-post-card__rail-cell:hover img { transform: scale(1.03); filter: brightness(1.08); }
 
 .fc-post-card__rail {
-  display: flex; gap: 6px; margin-top: 6px;
+  display: flex; gap: 6px; margin-top: 6px; flex-wrap: wrap;
 }
 .fc-post-card__rail-cell {
   width: 80px; height: 80px;
@@ -318,6 +298,10 @@ function formatBytes (n) {
   color: rgb(var(--v-theme-on-surface-variant));
   font-size: 0.85rem;
 }
+.fc-post-card__rail-more:hover {
+  border-color: rgb(var(--v-theme-accent));
+  color: rgb(var(--v-theme-accent));
+}
 
 .fc-post-card__title {
   font-family: 'Fraunces', Georgia, serif;
@@ -346,67 +330,36 @@ function formatBytes (n) {
   font-size: 0.9rem;
   line-height: 1.5;
   color: rgb(var(--v-theme-on-surface));
-  margin: 0 0 12px 0;
+  margin: 0;
+  white-space: pre-wrap;
+}
+/* Clamp ONLY while collapsed; expanding drops the clamp to show it all. */
+.fc-post-card__desc--clamped {
   display: -webkit-box;
   -webkit-line-clamp: 3;
   -webkit-box-orient: vertical;
   overflow: hidden;
 }
+@container (min-width: 800px) {
+  .fc-post-card__desc--clamped { -webkit-line-clamp: 5; }
+}
 .fc-post-card__desc--missing {
   font-style: italic;
   color: rgb(var(--v-theme-on-surface-variant));
 }
-@container (min-width: 800px) {
-  .fc-post-card__desc { -webkit-line-clamp: 5; }
+
+.fc-post-card__more {
+  margin-top: 6px;
+  padding: 0;
+  background: none; border: 0; cursor: pointer;
+  color: rgb(var(--v-theme-accent));
+  font-size: 0.85rem; font-weight: 600;
 }
+.fc-post-card__more:hover { text-decoration: underline; }
 
 .fc-post-card__atts {
-  display: inline-flex;
-  align-items: center;
-  gap: 6px;
-  font-size: 0.85rem;
-  color: rgb(var(--v-theme-on-surface-variant));
-}
-.fc-post-card__att-icon { color: rgb(var(--v-theme-on-surface-variant)); }
-
-/* ---- EXPANDED BODY ---- */
-.fc-post-card__expanded {
-  display: flex;
-  flex-direction: column;
-  gap: 20px;
-}
-.fc-post-card__title-full {
-  font-family: 'Fraunces', Georgia, serif;
-  font-size: 22px;
-  font-weight: 700;
-  margin: 0;
-  color: rgb(var(--v-theme-on-surface));
-}
-@container (min-width: 800px) {
-  .fc-post-card__title-full { font-size: 26px; }
-}
-.fc-post-card__sec { margin: 0; }
-.fc-post-card__h3 {
-  font-family: 'Fraunces', Georgia, serif;
-  font-size: 16px;
-  font-weight: 500;
-  margin: 0 0 8px 0;
-  color: rgb(var(--v-theme-on-surface));
-}
-.fc-post-card__loading-hint {
-  margin-top: 8px;
-  font-size: 0.8rem;
-  color: rgb(var(--v-theme-on-surface-variant));
-}
-.fc-post-card__desc-full {
-  font-size: 0.95rem;
-  line-height: 1.55;
-  color: rgb(var(--v-theme-on-surface));
-}
-.fc-post-card__desc-full :deep(p) { margin: 0 0 12px 0; }
-.fc-post-card__desc-full :deep(a) { color: rgb(var(--v-theme-accent)); }
-.fc-post-card__atts-full {
   display: flex; flex-wrap: wrap; gap: 8px;
+  margin-top: 12px;
 }
 .fc-post-card__att {
   display: inline-flex;
@@ -423,5 +376,6 @@ function formatBytes (n) {
   color: rgb(var(--v-theme-accent));
   border-color: rgb(var(--v-theme-accent));
 }
+.fc-post-card__att-icon { color: rgb(var(--v-theme-on-surface-variant)); }
 .fc-post-card__att-size { color: rgb(var(--v-theme-on-surface-variant)); }
 </style>
diff --git a/frontend/src/components/posts/PostImageGrid.vue b/frontend/src/components/posts/PostImageGrid.vue
deleted file mode 100644
index c77620f..0000000
--- a/frontend/src/components/posts/PostImageGrid.vue
+++ /dev/null
@@ -1,63 +0,0 @@
-<template>
-  <div class="fc-post-grid">
-    <button
-      v-for="(t, idx) in thumbnails"
-      :key="t.image_id"
-      type="button"
-      class="fc-post-grid__cell"
-      :aria-label="`Open image ${idx + 1} of ${thumbnails.length}`"
-      @click="openImage(t.image_id, idx)"
-    >
-      <img
-        :src="t.thumbnail_url"
-        :alt="`thumbnail ${idx + 1}`"
-        loading="lazy"
-      />
-    </button>
-  </div>
-</template>
-
-<script setup>
-import { computed } from 'vue'
-import { useModalStore } from '../../stores/modal.js'
-
-const props = defineProps({
-  thumbnails: { type: Array, required: true },  // [{ image_id, thumbnail_url, ... }]
-})
-
-const modal = useModalStore()
-
-const imageIds = computed(() => props.thumbnails.map(t => t.image_id))
-
-function openImage (id, idx) {
-  modal.open(id, { postImageIds: imageIds.value, initialIndex: idx })
-}
-</script>
-
-<style scoped>
-.fc-post-grid {
-  display: grid;
-  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
-  gap: 6px;
-}
-.fc-post-grid__cell {
-  aspect-ratio: 4 / 3;
-  overflow: hidden;
-  border-radius: 4px;
-  cursor: pointer;
-  border: 0;
-  padding: 0;
-  background: rgb(var(--v-theme-background));
-  transition: transform 0.15s ease, box-shadow 0.15s ease;
-}
-.fc-post-grid__cell:hover {
-  transform: scale(1.02);
-  box-shadow: 0 0 0 2px rgb(var(--v-theme-accent));
-}
-.fc-post-grid__cell img {
-  width: 100%;
-  height: 100%;
-  object-fit: cover;
-  display: block;
-}
-</style>
diff --git a/frontend/src/stores/modal.js b/frontend/src/stores/modal.js
index 05876d0..3859b61 100644
--- a/frontend/src/stores/modal.js
+++ b/frontend/src/stores/modal.js
@@ -18,9 +18,9 @@ export const useModalStore = defineStore('modal', () => {
   const inflight = useInflightToken()
 
   // Post-scoped cycle. When set, prev/next cycles within this array
-  // (used by PostCard's expanded-mosaic PostImageGrid clicks). When
-  // null, prev/next falls back to current.value.neighbors (the
-  // gallery-store-driven /api/gallery/image/<id> neighbors).
+  // (used by PostCard image clicks — the modal is scoped to that post's
+  // images). When null, prev/next falls back to current.value.neighbors
+  // (the gallery-store-driven /api/gallery/image/<id> neighbors).
   const postImageIds = ref(null)
   const postImageIndex = ref(0)
 
diff --git a/frontend/test/components/postCard.spec.js b/frontend/test/components/postCard.spec.js
index 1e39004..3625ca1 100644
--- a/frontend/test/components/postCard.spec.js
+++ b/frontend/test/components/postCard.spec.js
@@ -1,26 +1,61 @@
 // @vitest-environment happy-dom
-import { describe, it, expect } from 'vitest'
+import { describe, it, expect, vi } from 'vitest'
+import { flushPromises } from '@vue/test-utils'
 
 import PostCard from '../../src/components/posts/PostCard.vue'
+import { useModalStore } from '../../src/stores/modal.js'
 import { freshPinia, mountComponent } from '../support/mountComponent.js'
 
+const now = new Date().toISOString()
+const BASE = {
+  id: 1, external_post_id: 'P1',
+  post_title: '<strong>Hello World</strong>',
+  post_url: 'https://x/1', post_date: now, downloaded_at: now,
+  artist: { id: 1, name: 'Sabu', slug: 'sabu' },
+  source: { id: 1, platform: 'subscribestar' },
+  thumbnails: [], thumbnails_more: 0, attachments: [],
+}
+
 describe('PostCard', () => {
   it('renders the HTML-stripped title and the artist', () => {
-    const pinia = freshPinia()
-    const now = new Date().toISOString()
-    const post = {
-      id: 1, external_post_id: 'P1',
-      post_title: '<strong>Hello World</strong>',
-      post_url: 'https://x/1', post_date: now, downloaded_at: now,
-      description_plain: 'a description',
-      artist: { id: 1, name: 'Sabu', slug: 'sabu' },
-      source: { id: 1, platform: 'subscribestar' },
-      thumbnails: [], thumbnails_more: 0, attachments: [],
-    }
-    const w = mountComponent(PostCard, { props: { post }, pinia })
+    const post = { ...BASE, description_plain: 'a description' }
+    const w = mountComponent(PostCard, { props: { post }, pinia: freshPinia() })
     const t = w.text()
     expect(t).toContain('Hello World')   // plain title
     expect(t).not.toContain('<strong>')  // tags stripped
     expect(t).toContain('Sabu')          // artist (RouterLink slot)
   })
+
+  it('shows a "Show more" toggle only when the description is truncated', () => {
+    const truncated = mountComponent(PostCard, {
+      props: { post: { ...BASE, description_plain: 'lots of text…', description_truncated: true } },
+      pinia: freshPinia(),
+    })
+    expect(truncated.text()).toContain('Show more')
+
+    const full = mountComponent(PostCard, {
+      props: { post: { ...BASE, description_plain: 'short', description_truncated: false } },
+      pinia: freshPinia(),
+    })
+    expect(full.text()).not.toContain('Show more')
+  })
+
+  it('clicking an image opens the post-scoped modal (never expands the card)', async () => {
+    const pinia = freshPinia()
+    const modal = useModalStore()
+    const openSpy = vi.spyOn(modal, 'open').mockResolvedValue()
+    const post = {
+      ...BASE,
+      description_plain: 'd',
+      thumbnails: [
+        { image_id: 10, thumbnail_url: '/a' },
+        { image_id: 11, thumbnail_url: '/b' },
+      ],
+      thumbnails_more: 0,
+    }
+    const w = mountComponent(PostCard, { props: { post }, pinia })
+    await w.find('.fc-post-card__hero').trigger('click')
+    await flushPromises()
+    expect(openSpy).toHaveBeenCalledWith(10, { postImageIds: [10, 11] })
+  })
 })