fix(audit): wire 6 missing email subject overrides (R2-H14)

Admin-editable subject overrides at /admin/email-templates were no-ops
for 6 of 8 templates — only portal_activation and portal_reset called
loadSubjectOverride. Added a shared resolveSubject() helper and wired
it into the missing senders:

- crm_invite + portal_invite_resend (crm-invite.service.ts)
- inquiry_client_confirmation (email worker via portId on job payload)
- inquiry_sales_notification (email worker via portId on job payload)
- residential_inquiry_client_confirmation (residential-inquiries route)
- residential_inquiry_sales_alert (residential-inquiries route)

The inquiry email worker payloads now carry portId + portName so the
worker can resolve the per-port override; producers in inquiry-
notifications.service.ts pass them through.

1175/1175 vitest passing.

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

src/app/api/public/residential-inquiries/route.ts

@@ -11,6 +11,7 @@ import {
   residentialClientConfirmation,
   residentialSalesAlert,
 } from '@/lib/email/templates/residential-inquiry';
+import { resolveSubject } from '@/lib/email/resolve-subject';
 import { env } from '@/lib/env';
 import { errorResponse, RateLimitError, ValidationError } from '@/lib/errors';
 import { logger } from '@/lib/logger';
@@ -145,7 +146,13 @@ async function sendResidentialNotifications(args: {
     firstName: data.firstName,
     contactEmail: 'sales@portnimara.com',
   });
-  await sendEmail(data.email, confirmation.subject, confirmation.html);
+  const confirmationSubject = await resolveSubject({
+    key: 'residential_inquiry_client_confirmation',
+    portId,
+    fallback: confirmation.subject,
+    tokens: { portName: 'Port Nimara', recipientName: data.firstName },
+  });
+  await sendEmail(data.email, confirmationSubject, confirmation.html);
 
   // Sales-team alert - pull recipients from system_settings if configured;
   // fall back to the inquiry_contact_email if available.
@@ -184,6 +191,17 @@ async function sendResidentialNotifications(args: {
     preferences: data.preferences,
     crmDeepLink,
   });
+  const alertSubject = await resolveSubject({
+    key: 'residential_inquiry_sales_alert',
+    portId,
+    fallback: alert.subject,
+    tokens: {
+      portName: 'Port Nimara',
+      clientName: `${data.firstName} ${data.lastName}`.trim(),
+      email: data.email,
+      phone: data.phone,
+    },
+  });
 
-  await sendEmail(recipients, alert.subject, alert.html);
+  await sendEmail(recipients, alertSubject, alert.html);
 }