feat: add inquiry notification settings to admin settings UI

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/admin/settings/settings-manager.tsx

@@ -27,7 +27,7 @@ const KNOWN_SETTINGS: Array<{
   key: string;
   label: string;
   description: string;
-  type: 'boolean' | 'number' | 'json';
+  type: 'boolean' | 'number' | 'json' | 'string';
   defaultValue: unknown;
 }> = [
   {
@@ -73,6 +73,22 @@ const KNOWN_SETTINGS: Array<{
     type: 'json',
     defaultValue: [],
   },
+  {
+    key: 'inquiry_contact_email',
+    label: 'Inquiry Contact Email',
+    description:
+      'Reply-to email shown in client confirmation emails when a new interest is registered',
+    type: 'string',
+    defaultValue: 'sales@portnimara.com',
+  },
+  {
+    key: 'inquiry_notification_recipients',
+    label: 'External Notification Recipients',
+    description:
+      'Additional email addresses that receive sales notifications for new interests (JSON array)',
+    type: 'json',
+    defaultValue: [],
+  },
 ];
 
 export function SettingsManager() {
@@ -187,6 +203,49 @@ export function SettingsManager() {
           </CardContent>
         </Card>
 
+        {/* String Settings */}
+        {KNOWN_SETTINGS.some((s) => s.type === 'string') && (
+          <Card>
+            <CardHeader>
+              <CardTitle>Inquiry Settings</CardTitle>
+              <CardDescription>Configure inquiry notification behavior</CardDescription>
+            </CardHeader>
+            <CardContent className="space-y-4">
+              {KNOWN_SETTINGS.filter((s) => s.type === 'string').map((setting) => (
+                <div key={setting.key} className="flex items-center justify-between gap-4">
+                  <div className="flex-1">
+                    <Label>{setting.label}</Label>
+                    <p className="text-xs text-muted-foreground">{setting.description}</p>
+                  </div>
+                  <div className="flex items-center gap-2">
+                    <Input
+                      type="text"
+                      className="w-64"
+                      value={String(getEffectiveValue(setting.key, setting.defaultValue) ?? '')}
+                      onChange={(e) =>
+                        setValues((prev) => ({
+                          ...prev,
+                          [setting.key]: e.target.value,
+                        }))
+                      }
+                    />
+                    <Button
+                      size="sm"
+                      variant="outline"
+                      disabled={saving === setting.key}
+                      onClick={() =>
+                        saveSetting(setting.key, values[setting.key] ?? setting.defaultValue)
+                      }
+                    >
+                      <Save className="h-3.5 w-3.5" />
+                    </Button>
+                  </div>
+                </div>
+              ))}
+            </CardContent>
+          </Card>
+        )}
+
         {/* Numeric Settings */}
         <Card>
           <CardHeader>