chore: clean up repo for public release

- Remove BMAD framework, IDE configs, dev screenshots, test files,
  internal docs, and backup files
- Rename keep-notes/ to memento-note/
- Update all references from keep-notes to memento-note
- Add Apache 2.0 license with Commons Clause (non-commercial restriction)
- Add clean .gitignore and .env.docker.example

memento-note/app/actions/admin-settings.ts

@@ -0,0 +1,73 @@
+'use server'
+
+import prisma from '@/lib/prisma'
+import { auth } from '@/auth'
+import { sendEmail } from '@/lib/mail'
+import { revalidateTag } from 'next/cache'
+
+async function checkAdmin() {
+  const session = await auth()
+  if (!session?.user?.id || (session.user as any).role !== 'ADMIN') {
+    throw new Error('Unauthorized: Admin access required')
+  }
+  return session
+}
+
+export async function testEmail(provider: 'resend' | 'smtp' = 'smtp') {
+  const session = await checkAdmin()
+  const email = session.user?.email
+
+  if (!email) throw new Error("No admin email found")
+
+  const subject = provider === 'resend'
+    ? "Memento Resend Test"
+    : "Memento SMTP Test"
+
+  const html = provider === 'resend'
+    ? "<p>This is a test email from your Memento instance. <strong>Resend is working!</strong></p>"
+    : "<p>This is a test email from your Memento instance. <strong>SMTP is working!</strong></p>"
+
+  const result = await sendEmail({
+    to: email,
+    subject,
+    html,
+  }, provider)
+
+  return result
+}
+
+export async function getSystemConfig() {
+  await checkAdmin()
+  // Reuse the cached version from lib/config
+  const { getSystemConfig: getCachedConfig } = await import('@/lib/config')
+  return getCachedConfig()
+}
+
+export async function updateSystemConfig(data: Record<string, string>) {
+  await checkAdmin()
+
+  try {
+    // Filter out empty values but keep 'false' as valid
+    const filteredData = Object.fromEntries(
+      Object.entries(data).filter(([key, value]) => value !== '' && value !== null && value !== undefined)
+    )
+
+    const operations = Object.entries(filteredData).map(([key, value]) =>
+      prisma.systemConfig.upsert({
+        where: { key },
+        update: { value },
+        create: { key, value }
+      })
+    )
+
+    await prisma.$transaction(operations)
+
+    // Invalidate cache after update
+    revalidateTag('system-config', '/settings')
+
+    return { success: true }
+  } catch (error) {
+    console.error('Failed to update settings:', error)
+    return { error: 'Failed to update settings' }
+  }
+}