feat: launch readiness — PWA, API hardening, memory leak fixes, sticker removal

- Add PWA infrastructure: vite-plugin-pwa, manifest, service worker,
  SW update prompt component, placeholder icons, Apple meta tags
- Harden API client: 401 auto-logout, AbortController timeouts
  (30s standard, 120s uploads), onUnauthorized callback
- Fix memory leaks: clear voice user status on leave, clean up all
  Maps (channelToSpaceMap, permissions, etc.) on removeSpace
- Upgrade error boundary to Aether Drift design with Try Again button,
  collapsible stack trace, and componentDidCatch logging
- Configure desktop icon paths in electron-builder.yml
- Remove sticker feature (server routes, schema, types, UI components)
- Fix Docker build: use **/node_modules in .dockerignore to prevent
  COPY from clobbering pnpm-installed workspace dependencies
- Add vite-env.d.ts declarations for noise suppressor wasm imports
- Exclude test files from tsc build via tsconfig

packages/server/src/routes/messages.ts

@@ -121,28 +121,6 @@ export function fetchReplyToMessages(messages: (typeof schema.messages.$inferSel
   return map;
 }
 
-/** Hydrate a sticker by ID, returns null if not found */
-export function hydrateSticker(stickerId: string | null | undefined): any {
-  if (!stickerId) return null;
-  const db = getDb();
-  const row = db.select().from(schema.stickers).where(eq(schema.stickers.id, stickerId)).get();
-  if (!row) return null;
-  return {
-    id: row.id,
-    packId: row.packId,
-    spaceId: row.spaceId,
-    name: row.name,
-    tags: row.tags ?? '',
-    filename: row.filename,
-    mimetype: row.mimetype,
-    size: row.size,
-    width: row.width,
-    height: row.height,
-    uploadedBy: row.uploadedBy,
-    createdAt: row.createdAt,
-  };
-}
-
 export function buildMessageWithUser(
   message: typeof schema.messages.$inferSelect,
   user: typeof schema.users.$inferSelect,
@@ -150,7 +128,6 @@ export function buildMessageWithUser(
   reactions: Reaction[] = [],
   replyTo: MessageWithUser | null = null,
 ): MessageWithUser {
-  const stickerId = (message as any).stickerId ?? null;
   return {
     id: message.id,
     channelId: message.channelId,
@@ -172,8 +149,6 @@ export function buildMessageWithUser(
     })),
     reactions,
     replyTo,
-    stickerId,
-    sticker: hydrateSticker(stickerId),
   };
 }
 
@@ -277,7 +252,7 @@ export async function messageRoutes(app: FastifyInstance): Promise<void> {
     },
   }, async (request, reply) => {
     const { id } = request.params;
-    const { content, attachments: attachmentIds, replyToId, stickerId } = request.body;
+    const { content, attachments: attachmentIds, replyToId } = request.body;
 
     const spaceId = getChannelSpaceId(id);
     if (!spaceId) {
@@ -295,18 +270,9 @@ export async function messageRoutes(app: FastifyInstance): Promise<void> {
 
     const hasContent = content && typeof content === 'string' && content.trim().length > 0;
     const hasAttachments = attachmentIds && attachmentIds.length > 0;
-    const hasSticker = stickerId && typeof stickerId === 'string';
 
-    if (!hasContent && !hasAttachments && !hasSticker) {
-      return reply.code(400).send({ error: 'Message must have content, attachments, or a sticker', statusCode: 400 });
-    }
-
-    // Validate sticker exists if provided
-    if (hasSticker) {
-      const sticker = getDb().select().from(schema.stickers).where(eq(schema.stickers.id, stickerId!)).get();
-      if (!sticker) {
-        return reply.code(400).send({ error: 'Sticker not found', statusCode: 400 });
-      }
+    if (!hasContent && !hasAttachments) {
+      return reply.code(400).send({ error: 'Message must have content or attachments', statusCode: 400 });
     }
 
     if (content && content.length > MAX_MESSAGE_LENGTH) {
@@ -339,7 +305,6 @@ export async function messageRoutes(app: FastifyInstance): Promise<void> {
         userId: request.userId,
         replyToId: replyToId || null,
         content: content?.trim() || null,
-        stickerId: stickerId || null,
         createdAt: now,
       }).run();