chore(desktop): release v0.21.1

apps/desktop/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@chat-app/desktop",
-  "version": "0.21.0",
+  "version": "0.21.1",
   "private": true,
   "description": "Electron desktop client (Windows / macOS / Linux)",
   "type": "module",

apps/desktop/src/lib/useConversationMessages.ts

@@ -5,12 +5,12 @@ import {
   decryptMessages,
   encryptAndUploadAttachment,
   fetchConversationMessages,
+  getOrCreateConvKey,
   insertAttachmentRow,
   MAX_ATTACHMENT_BYTES,
   type MessageWithCipher,
   sendEncryptedMessage,
   shareConvKeyToUser,
-  tryGetConvKey,
 } from '@chat-app/shared/chat';
 import { bytesToPgHex, pgBytesToBytes } from '@chat-app/shared/supabase';
 import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
@@ -154,8 +154,24 @@ export function useConversationMessages({ conversationId, userId, deviceId }: Ar
         // db-types snapshot predates the active_key_version column; cast via unknown.
         const version = (convRow as unknown as { active_key_version: number }).active_key_version;
 
-        const handle = await tryGetConvKey(supabase, conversationId, userId, priv, version);
+        // Use `getOrCreateConvKey` rather than `tryGetConvKey` so that if we
-        if (!handle || cancelled) return;
+        // can't unwrap our bundle at the active version (we lost the device
+        // key, or the bundle was wiped by the 0.18.0 reset_user_key bug, or
+        // we only ever had a legacy `recipient_device_id` row), the helper
+        // auto-rotates the conv-key to version+1 and wraps fresh bundles
+        // for every member with a `user_keys` row. This is the only path
+        // that recovers stuck-legacy conversations on the receive side —
+        // `tryGetConvKey` just returned null and left the chat permanently
+        // un-decryptable for the locked-out party.
+        const handle = await getOrCreateConvKey(supabase, conversationId, {
+          userId,
+          privateKey: priv,
+        });
+        if (cancelled) return;
+        // If the helper rotated, all current members with a `user_keys`
+        // public key were already wrapped by `rotateConvKey`. No further
+        // sweep work is needed.
+        if (handle.keyVersion > version) return;
 
         const { data: members, error: mErr } = await supabase
           .from('conversation_members')

apps/desktop/src/pages/ConversationPage.tsx

@@ -754,6 +754,24 @@ export function ConversationPage() {
     lastPendingCountRef.current = pending.length;
   }, [pending.length]);
 
+  // Snap the viewport back to the bottom after a send. The composer
+  // shrinks (cleared text, dismissed reply preview, dropped attachment
+  // thumbs) which lets the Virtuoso area grow vertically — leaving the
+  // just-sent bubble visibly above the new bottom for a frame.
+  // `requestAnimationFrame` defers the scroll until React has committed
+  // the composer-height change, so Virtuoso's ResizeObserver has
+  // already seen the new viewport and `index: 'LAST', align: 'end'`
+  // targets the correct bottom edge.
+  const snapToBottom = useCallback(() => {
+    window.requestAnimationFrame(() => {
+      virtuosoRef.current?.scrollToIndex({
+        index: 'LAST',
+        align: 'end',
+        behavior: 'auto',
+      });
+    });
+  }, []);
+
   async function handleSend(e?: React.FormEvent) {
     e?.preventDefault();
     if ((!text.trim() && attachments.length === 0) || sending) return;
@@ -773,6 +791,7 @@ export function ConversationPage() {
       setStickToBottom(true);
       notifyStopTyping();
       if (id) clearDraft(id);
+      snapToBottom();
     } catch (err: unknown) {
       const code = extractErrorCode(err);
       setSendError(
@@ -798,13 +817,14 @@ export function ConversationPage() {
         setReplyTo(null);
         setStickToBottom(true);
         notifyStopTyping();
+        snapToBottom();
       } catch (err: unknown) {
         setPollError(err instanceof Error ? err.message : 'Umfrage konnte nicht gesendet werden');
       } finally {
         setPollSending(false);
       }
     },
-    [send, replyTo?.id, notifyStopTyping],
+    [send, replyTo?.id, notifyStopTyping, snapToBottom],
   );
 
   const handleCreateWhiteboard = useCallback(async () => {
@@ -817,12 +837,13 @@ export function ConversationPage() {
       setReplyTo(null);
       setStickToBottom(true);
       setOpenWhiteboardId(board.id);
+      snapToBottom();
     } catch (err: unknown) {
       setSendError(err instanceof Error ? err.message : 'Whiteboard konnte nicht angelegt werden');
     } finally {
       setCreatingWhiteboard(false);
     }
-  }, [id, creatingWhiteboard, send, replyTo?.id]);
+  }, [id, creatingWhiteboard, send, replyTo?.id, snapToBottom]);
 
   const handleStartWatchTogether = useCallback(async () => {
     if (!id) return;
@@ -842,12 +863,13 @@ export function ConversationPage() {
       setWatchDialogOpen(false);
       setWatchUrl('');
       setOpenWatchSessionId(ws.id);
+      snapToBottom();
     } catch (err: unknown) {
       setWatchError(err instanceof Error ? err.message : 'Konnte Watch-Together nicht starten');
     } finally {
       setWatchCreating(false);
     }
-  }, [id, watchUrl, send, replyTo?.id]);
+  }, [id, watchUrl, send, replyTo?.id, snapToBottom]);
 
   const handleStartGame = useCallback(async (gameType: GameType) => {
     if (!id) return;
@@ -874,12 +896,13 @@ export function ConversationPage() {
       setStickToBottom(true);
       setGameDialogOpen(false);
       setOpenGameId(game.id);
+      snapToBottom();
     } catch (err: unknown) {
       setGameError(err instanceof Error ? err.message : 'Konnte Spiel nicht starten');
     } finally {
       setGameCreating(false);
     }
-  }, [id, conversation, myId, send, replyTo?.id]);
+  }, [id, conversation, myId, send, replyTo?.id, snapToBottom]);
 
   async function ingestFiles(files: File[]) {
     const compressed = await compressImages(files);
@@ -1046,14 +1069,32 @@ export function ConversationPage() {
             // the bottom; returning `false` from the callback when they're
             // scrolled up preserves their reading position when realtime
             // messages arrive (critical UX: do NOT jerk the user).
-            followOutput={(isAtBottom) => (isAtBottom ? 'smooth' : false)}
+            //
+            // We deliberately use 'auto' (instant) rather than 'smooth':
+            // with a smooth scroll animation, atBottomStateChange fires
+            // `false` mid-animation (scrollTop is briefly above the new
+            // bottom) and then `true` after settle — that flips
+            // stickToBottom twice, flashing the "Zum neuesten" pill and
+            // re-rendering the whole list. Instant scroll has zero
+            // mid-animation state so the cascade never happens.
+            followOutput={(isAtBottom) => (isAtBottom ? 'auto' : false)}
             atBottomStateChange={handleAtBottomStateChange}
-            atBottomThreshold={80}
+            // 250 px tolerance — large enough that appending a tall row
+            // (image, voice note, grouped attachments) doesn't push the
+            // user out of the at-bottom zone. The previous 80 px flipped
+            // stickToBottom on nearly every typical message arrival.
+            atBottomThreshold={250}
             rangeChanged={handleRangeChanged}
             startReached={handleStartReached}
             // Render rows just outside the viewport so fast scrolling
             // doesn't briefly flash empty space.
             increaseViewportBy={400}
+            // Visual breathing space below the last message so a bubble
+            // bottom doesn't sit flush against the composer top — matches
+            // Discord's chat-pane bottom padding.
+            components={{
+              Footer: () => <div style={{ height: '12px' }} />,
+            }}
             itemContent={(_index, row) => {
               if (row.kind === 'loader') {
                 return (