perf: memo GridCard, fuse save fns, fix slash tab active color

memento-note/app/actions/notes.ts

@@ -22,6 +22,10 @@ import {
 } from '@/lib/note-history'
 import { NOTE_LIST_SELECT } from '@/lib/note-select'
 
+function stripNullBytes(str: string | null | undefined): string | null {
+  if (str === null || str === undefined) return null
+  return str.replace(/\u0000/g, '')
+}
 
 async function ensureSessionUserExists(sessionUser: { id: string; email?: string | null; name?: string | null }) {
   const fallbackEmail = `user-${sessionUser.id}@local.momento`
@@ -400,8 +404,8 @@ export async function createNote(data: {
     const note = await prisma.note.create({
       data: {
         userId: session.user.id,
-        title: data.title || null,
-        content: data.content,
+        title: stripNullBytes(data.title) || null,
+        content: stripNullBytes(data.content) || '',
         color: data.color || 'default',
         type: data.type || 'richtext',
         checkItems: data.checkItems ? JSON.stringify(data.checkItems) : null,
@@ -563,6 +567,12 @@ export async function updateNote(id: string, data: {
     const oldNotebookId = oldNote?.notebookId
 
     const updateData: any = { ...data }
+    if (updateData.title !== undefined) {
+      updateData.title = stripNullBytes(updateData.title)
+    }
+    if (updateData.content !== undefined) {
+      updateData.content = stripNullBytes(updateData.content)
+    }
 
     // Reset isReminderDone only when reminder date actually changes (not on every save)
     if ('reminder' in data && data.reminder !== null) {
@@ -984,6 +994,7 @@ export async function getAllNotes(includeArchived = false, notebookId?: string)
 
     const sharedNotes = acceptedShares
       .map(share => share.note)
+      .filter(Boolean)
       .filter(note => includeArchived || !note.isArchived)
       .map(note => ({ ...note, _isShared: true }))