fix(email): sender popover Email action opens in-app composer instead of mailto:

components/email/recipient-popover.tsx

@@ -2,11 +2,14 @@
 
 import { useState, useRef, useEffect } from "react";
 import { createPortal } from "react-dom";
+import { useRouter } from "next/navigation";
 import { Mail, Phone, Building, ExternalLink, Copy, Send, UserPlus } from "lucide-react";
 import { Avatar } from "@/components/ui/avatar";
 import { cn } from "@/lib/utils";
 import { useContactStore, getContactDisplayName } from "@/stores/contact-store";
 import { toast } from "@/stores/toast-store";
+import { savePendingMailto, notifyPendingMailto } from "@/lib/protocol-handlers/session";
+import { formatRecipient } from "@/lib/email-composer-utils";
 import type { ContactCard } from "@/lib/jmap/types";
 
 interface RecipientPopoverProps {
@@ -125,6 +128,21 @@ export function RecipientPopover({ name, email, displayLabel, onViewContact, cla
     }
   };
 
+  const router = useRouter();
+
+  const handleCompose = () => {
+    savePendingMailto({
+      to: [formatRecipient(contactName, email)],
+      cc: [],
+      bcc: [],
+      subject: "",
+      body: "",
+    });
+    notifyPendingMailto();
+    router.push("/");
+    handleClose();
+  };
+
   return (
     <>
       <button
@@ -210,14 +228,14 @@ export function RecipientPopover({ name, email, displayLabel, onViewContact, cla
                 <Copy className="w-3.5 h-3.5" />
                 Copy
               </button>
-              <a
-                href={`mailto:${email}`}
+              <button
+                onClick={handleCompose}
                 className="flex items-center gap-1.5 text-xs text-muted-foreground hover:text-foreground px-2 py-1.5 rounded hover:bg-muted transition-colors"
                 title="Send email"
               >
                 <Send className="w-3.5 h-3.5" />
                 Email
-              </a>
+              </button>
               {onViewContact && (
                 <button
                   onClick={handleViewContact}