serve static assets from local public/ instead of static.officer.dev, simplify gmail history 404/410 handling

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/workspaces/emailer/emails/UserInvite.tsx

@@ -15,7 +15,7 @@ const Email = ({ invitedBy, url }: EmailProps) => {
           <Container className="rounded-lg bg-white p-8 shadow-lg">
             <Img
               className="mx-auto block"
-              src="https://static.officer.dev/og-image.jpg"
+              src="/og-image.jpg"
               width="480"
               alt="officer.dev"
             />

src/workspaces/emailer/emails/layouts/MainLayout.tsx

@@ -10,7 +10,7 @@ const MainLayout = ({ children }: { children: ReactNode }) => {
           <Container className="rounded-lg bg-white p-8 shadow-lg">
             <Img
               className="mx-auto block"
-              src="https://static.officer.dev/officer-logo.png"
+              src="/officer-logo.png"
               width="240"
               alt="Officer Logo"
             />