chore: update SMTP module and tests; remove unused assets

tests/email-smtp.test.ts

@@ -1,6 +1,7 @@
 import { describe, it, expect, vi, beforeEach } from "vitest"
 
 // Mock tls to simulate an SMTP server over implicit TLS
+let lastWrites: string[] = []
 vi.mock("tls", () => {
   class MockSocket {
     listeners: Record<string, Function[]> = {}
@@ -58,6 +59,7 @@ vi.mock("tls", () => {
 
   function connect(_port: number, _host: string, _opts: unknown, cb?: Function) {
     const socket = new MockSocket()
+    lastWrites = socket.writes
     // initial server greeting
     setTimeout(() => {
       cb?.()
@@ -66,7 +68,7 @@ vi.mock("tls", () => {
     return socket as unknown as NodeJS.WritableStream & { on: MockSocket["on"] }
   }
 
-  return { default: { connect }, connect }
+  return { default: { connect }, connect, __getLastWrites: () => lastWrites }
 })
 
 describe("sendSmtpMail", () => {
@@ -87,5 +89,23 @@ describe("sendSmtpMail", () => {
       )
     ).resolves.toBeUndefined()
   })
-})
 
+  it("extracts envelope address from parentheses or raw email", async () => {
+    const { sendSmtpMail } = await import("@/server/email-smtp")
+    const tlsMock = await import("tls" as any)
+    await sendSmtpMail(
+      {
+        host: "smtp.mock",
+        port: 465,
+        username: "user@example.com",
+        password: "secret",
+        from: "Chatwoot chat@esdrasrenan.com.br (chat@esdrasrenan.com.br)",
+      },
+      "rcpt@example.com",
+      "Subject",
+      "<p>Hi</p>"
+    )
+    const writes = (tlsMock as any).__getLastWrites() as string[]
+    expect(writes.some((w) => /MAIL FROM:<chat@esdrasrenan.com.br>\r\n/.test(w))).toBe(true)
+  })
+})