diff --git a/.unipi/docs/quick-work/2026-06-03-bubble-footer-actions.md b/.unipi/docs/quick-work/2026-06-03-bubble-footer-actions.md
new file mode 100644
index 0000000..2615adb
--- /dev/null
+++ b/.unipi/docs/quick-work/2026-06-03-bubble-footer-actions.md
@@ -0,0 +1,38 @@
+---
+title: "MessageBubble footer — timestamp + favorite + (file) download"
+type: quick-work
+date: 2026-06-03
+---
+
+# MessageBubble footer — timestamp + favorite + (file) download
+
+## Task
+Implement the 全部资料 card layout from Figma `4206-6509`:
+- Each card shows a bottom row with the publish timestamp on the left and action buttons on the right.
+- Image / album / video / text / link bubbles → 1 button (FavoriteButton).
+- File-document bubbles (mp3, pptx, pdf, zip, …) → 2 buttons (FavoriteButton + Download).
+
+## Changes
+- `src/components/messageStream/BubbleAttachmentDownloadButton.tsx` (new) — small circular download button visually matched to `FavoriteButton` (sm). Handles its own download/loading state and surfaces the `SaveToAlbumGuide` toast for media kinds.
+- `src/components/messageStream/MessageBubble.tsx`
+  - Removed the absolute-positioned FavoriteButton for the default variant.
+  - Removed the right-aligned `<time>` block for the default variant.
+  - Added a new flex footer: timestamp on the left, FavoriteButton (+ optional `BubbleAttachmentDownloadButton`) on the right.
+  - File-doc detection is based on `pickBubble(post) === FileDocBubble` and the primary attachment `post.attachments[0]`.
+  - `variant === "latest"` paths are left untouched (latest masonry cards keep the bottom-right absolute FavoriteButton and the existing right-aligned timestamp because `LatestFileCard` already renders its own footer).
+- `src/components/messageStream/bubbles/FileDocBubble.tsx`
+  - Removed the inline per-row download button from `AttachmentRow` in the default variant (download now lives in the bubble footer).
+  - Trimmed the now-unused state and handlers from `AttachmentRow`; imports remain because `LatestFileCard` still uses them.
+
+## Verification
+- `npx tsc --noEmit` — clean.
+- `npm run format` then `npm run format:check` — clean.
+- `npm test` — 49/49 passing.
+- Visual check pending on device — expected to match Figma `4206-6509`:
+  - timestamp + bookmark on image/album/video/text/link cards
+  - timestamp + bookmark + download on file cards
+
+## Notes
+- For posts with multiple file attachments, the footer download button currently targets `attachments[0]` only (matches the Figma single-attachment cards). If a multi-attachment file post needs per-attachment download, revisit `AttachmentRow` and re-add a small inline download or expose a list in an overflow menu.
+- The new download button mirrors `FavoriteButton`'s sm style (h-9 w-9, same border / bg / hover treatment) so the two sit on the same baseline and share visual weight.
+- The home page's "latest" masonry variant is unaffected — that path renders `LatestFileCard` which already has its own footer.
diff --git a/src/components/messageStream/BubbleAttachmentDownloadButton.tsx b/src/components/messageStream/BubbleAttachmentDownloadButton.tsx
new file mode 100644
index 0000000..7c3993a
--- /dev/null
+++ b/src/components/messageStream/BubbleAttachmentDownloadButton.tsx
@@ -0,0 +1,67 @@
+import { LoaderCircle } from "lucide-react";
+import { useState } from "react";
+import { DownloadCloudIcon } from "../icons/DownloadCloudIcon";
+import { useI18n } from "../../i18n";
+import {
+  mediaSaveKindFromAttachment,
+  useSaveToAlbumGuide,
+} from "../SaveToAlbumGuide";
+import { useToast } from "../Toast";
+import type { Attachment } from "../../types/post";
+import { downloadAttachment, pauseActiveVideos } from "./utils/downloadFile";
+import { filenameWithExtension } from "./utils/filenameDisplay";
+
+export function BubbleAttachmentDownloadButton({
+  postId,
+  attachment,
+}: {
+  postId: string;
+  attachment: Attachment;
+}) {
+  const { t } = useI18n();
+  const { showToast } = useToast();
+  const { showSaveToAlbumGuide } = useSaveToAlbumGuide();
+  const [isDownloading, setIsDownloading] = useState(false);
+  const displayFilename = filenameWithExtension(
+    attachment.filename,
+    attachment.mime,
+  );
+
+  const handleDownload = async () => {
+    if (isDownloading) return;
+    pauseActiveVideos();
+    setIsDownloading(true);
+    try {
+      await downloadAttachment(postId, attachment.id, displayFilename);
+      const mediaKind = mediaSaveKindFromAttachment(attachment);
+      if (mediaKind) showSaveToAlbumGuide(mediaKind);
+    } catch {
+      showToast(t("downloadFail"), "error");
+    } finally {
+      setIsDownloading(false);
+    }
+  };
+
+  return (
+    <button
+      type="button"
+      onClick={(event) => {
+        event.preventDefault();
+        event.stopPropagation();
+        void handleDownload();
+      }}
+      disabled={isDownloading}
+      aria-label={
+        isDownloading ? t("downloading") : `Download ${attachment.filename}`
+      }
+      aria-busy={isDownloading}
+      className="inline-flex h-9 w-9 shrink-0 items-center justify-center rounded-full border border-white/10 bg-[#191921]/90 text-[#A8A9AE] outline-none transition active:scale-95 hover:border-ark-gold hover:bg-[#191921] hover:text-ark-gold focus-visible:ring-2 focus-visible:ring-ark-gold/80 disabled:cursor-wait disabled:opacity-70"
+    >
+      {isDownloading ? (
+        <LoaderCircle className="h-4 w-4 animate-spin" strokeWidth={2.2} />
+      ) : (
+        <DownloadCloudIcon className="h-4 w-4" />
+      )}
+    </button>
+  );
+}
diff --git a/src/components/messageStream/MessageBubble.tsx b/src/components/messageStream/MessageBubble.tsx
index 76f9afc..b8e992c 100644
--- a/src/components/messageStream/MessageBubble.tsx
+++ b/src/components/messageStream/MessageBubble.tsx
@@ -9,6 +9,7 @@ import { VideoBubble } from "./bubbles/VideoBubble";
 import { LinkPreviewCard } from "./LinkPreviewCard";
 import { formatDateTime } from "./utils/formatTime";
 import { FavoriteButton } from "../../favorites/FavoriteButton";
+import { BubbleAttachmentDownloadButton } from "./BubbleAttachmentDownloadButton";
 
 export type MessageBubbleVariant = "default" | "latest";
 
@@ -47,7 +48,9 @@ export function MessageBubble({
     Bubble === VideoBubble ||
     Bubble === ImageBubble ||
     Bubble === ImageWithTextBubble;
-  const isLatestFileCard = variant === "latest" && Bubble === FileDocBubble;
+  const isFileBubble = Bubble === FileDocBubble;
+  const isLatestVariant = variant === "latest";
+  const isLatestFileCard = isLatestVariant && isFileBubble;
 
   return (
     <div
@@ -63,22 +66,47 @@ export function MessageBubble({
           isVisual || isLatestFileCard ? "p-0" : "px-4 py-3"
         }`}
       >
-        {!isLatestFileCard ? (
+        {isLatestVariant && !isFileBubble ? (
           <FavoriteButton
             resourceId={post.id}
             size="sm"
-            className={`absolute z-20 shadow-lg shadow-black/30 ${
-              variant === "latest" ? "bottom-4 right-4" : "right-3 top-3"
-            }`}
+            className="absolute z-20 bottom-4 right-4 shadow-lg shadow-black/30"
           />
         ) : null}
+
         <Bubble post={post} variant={variant} />
+
         {post.linkPreview ? (
           <div className={isVisual ? "px-4 pt-3" : "mt-3"}>
             <LinkPreviewCard preview={post.linkPreview} />
           </div>
         ) : null}
-        {!isLatestFileCard ? (
+
+        {!isLatestVariant ? (
+          <div
+            className={`flex items-center justify-between gap-3 ${
+              isVisual ? "px-4 pb-3 pt-3" : "mt-3"
+            }`}
+          >
+            <time
+              dateTime={post.publishedAt}
+              className="min-w-0 truncate text-[12px] leading-[19px] text-[#A8A9AE]"
+            >
+              {formatDateTime(post.publishedAt)}
+            </time>
+            <div className="flex shrink-0 items-center gap-2">
+              <FavoriteButton resourceId={post.id} size="sm" />
+              {isFileBubble && post.attachments[0] ? (
+                <BubbleAttachmentDownloadButton
+                  postId={post.id}
+                  attachment={post.attachments[0]}
+                />
+              ) : null}
+            </div>
+          </div>
+        ) : null}
+
+        {isLatestVariant && !isFileBubble ? (
           <time
             dateTime={post.publishedAt}
             className={`block text-right text-[12px] leading-[19px] text-[#A8A9AE] ${
diff --git a/src/components/messageStream/bubbles/FileDocBubble.tsx b/src/components/messageStream/bubbles/FileDocBubble.tsx
index 2d0ea7c..5f44c70 100644
--- a/src/components/messageStream/bubbles/FileDocBubble.tsx
+++ b/src/components/messageStream/bubbles/FileDocBubble.tsx
@@ -18,29 +18,11 @@ import { useToast } from "../../Toast";
 import { FavoriteButton } from "../../../favorites/FavoriteButton";
 import type { MessageBubbleVariant } from "../MessageBubble";
 
-function AttachmentRow({ postId, att }: { postId: string; att: Attachment }) {
-  const { t } = useI18n();
-  const { showToast } = useToast();
-  const { showSaveToAlbumGuide } = useSaveToAlbumGuide();
+function AttachmentRow({ att }: { postId: string; att: Attachment }) {
   const { Icon, color } = fileIcon({ mime: att.mime, filename: att.filename });
   const displayFilename = filenameWithExtension(att.filename, att.mime);
-  const [isDownloading, setIsDownloading] = useState(false);
   const [previewFailed, setPreviewFailed] = useState(false);
 
-  const handleDownload = async () => {
-    if (isDownloading) return;
-    setIsDownloading(true);
-    try {
-      await downloadAttachment(postId, att.id, displayFilename);
-      const mediaKind = mediaSaveKindFromAttachment(att);
-      if (mediaKind) showSaveToAlbumGuide(mediaKind);
-    } catch {
-      showToast(t("downloadFail"), "error");
-    } finally {
-      setIsDownloading(false);
-    }
-  };
-
   const isImage = att.kind === "image" || att.mime.startsWith("image/");
   const previewUrl =
     att.thumbnailUrl ?? att.posterUrl ?? (isImage ? att.url : undefined);
@@ -84,25 +66,9 @@ function AttachmentRow({ postId, att }: { postId: string; att: Attachment }) {
           })()}
         </div>
         <div className="text-[12px] font-medium leading-[19.2px] text-[#A8A9AE]">
-          {isDownloading ? t("downloading") : formatBytes(att.sizeBytes)}
+          {formatBytes(att.sizeBytes)}
         </div>
       </div>
-      <button
-        type="button"
-        onClick={handleDownload}
-        disabled={isDownloading}
-        className="flex h-10 w-10 shrink-0 items-center justify-center rounded-full bg-[#191921] text-white transition hover:bg-[#22232D] disabled:cursor-wait"
-        aria-label={
-          isDownloading ? t("downloading") : `Download ${att.filename}`
-        }
-        aria-busy={isDownloading}
-      >
-        {isDownloading ? (
-          <LoaderCircle className="h-5 w-5 animate-spin" strokeWidth={2.3} />
-        ) : (
-          <DownloadCloudIcon className="h-6 w-6" />
-        )}
-      </button>
     </div>
   );
 }