fix: don't require email infra on self-hosted, improve login form detection

- sendTransactionalEmail no-ops (with a warning) when no mail transport is
  configured instead of throwing — sign-up 500'd on SMTP-less instances
- sendVerificationEmail catches transport failures so a broken SMTP can't
  block account creation; verification stays optional (requireEmailVerification
  was never set)
- login form gains id/name attributes and label for/id pairing so password
  managers (Proton Pass et al.) detect the fields; email input uses
  autocomplete=username

Authored By: TDvorak <[email protected]>

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

apps/auth/src/lib/auth.ts

@@ -94,12 +94,18 @@ export const auth = betterAuth({
     sendOnSignUp: true,
     autoSignInAfterVerification: true,
     async sendVerificationEmail({ user, url }) {
-      await sendTransactionalEmail({
-        to: user.email,
-        subject: "Verify your Primora email",
-        text: `Verify your Primora email: ${url}`,
-        html: `<p>Verify your Primora email.</p><p><a href="${url}">Verify email</a></p>`,
-      });
+      // Verification is optional — a misconfigured transport must not fail
+      // sign-up or sign-in.
+      try {
+        await sendTransactionalEmail({
+          to: user.email,
+          subject: "Verify your Primora email",
+          text: `Verify your Primora email: ${url}`,
+          html: `<p>Verify your Primora email.</p><p><a href="${url}">Verify email</a></p>`,
+        });
+      } catch (error) {
+        console.warn(JSON.stringify({ level: "warn", msg: "verification_email_failed", error }));
+      }
     },
   },
   // Enabled unconditionally — better-auth only turns this on when NODE_ENV is

apps/auth/src/lib/mail.ts

@@ -51,7 +51,12 @@ export async function sendTransactionalEmail(input: {
   }
 
   if (!("smtp" in cfg) || !cfg.smtp) {
-    throw new Error("No mail transport configured for auth service.");
+    // Self-hosted instances may run without mail — auth still works, the
+    // email simply never goes out.
+    console.warn(
+      JSON.stringify({ level: "warn", msg: "mail_skipped_no_transport", to: input.to, subject: input.subject }),
+    );
+    return;
   }
 
   await nodemailer.createTransport(cfg.smtp).sendMail({