Feature/saajan persona (#3)

* feat: add template based email content (html + plaintext fallback)

* feat: init saajan component

* feat: add aesthetic noise background and implement Saajan component in register and login

* feat: add post seal modal for vault

* refactor: add proper props interfaces

* refactor: expose props on ui components

* feat: add ssajan in lots of flows

* fix: remove render test with no value and add aria helper for btn identification

* refactor: update email notification to account for proper arguments

* refactor:  refactor E2E auth helper and mail parsing logic

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Co-authored-by: ramvignesh-b <ramvignesh-b@github.com>

frontend/src/components/drawer/LetterItem.tsx

@@ -2,6 +2,15 @@ import { LockIcon, LockKeyOpenIcon } from "@phosphor-icons/react";
 import { useNavigate } from "react-router-dom";
 import { PATHS } from "../../config/routes";
 
+interface LetterItemProps {
+  preview: string;
+  timestamp: string;
+  id: string;
+  status: "DRAFT" | "SEALED" | "BURNED";
+  unlock_at?: string;
+  isLocked?: boolean;
+}
+
 export function LetterItem({
   preview,
   timestamp,
@@ -9,14 +18,7 @@ export function LetterItem({
   status,
   unlock_at,
   isLocked = false,
-}: {
-  preview: string;
-  timestamp: string;
-  id: string;
-  status: "DRAFT" | "SEALED" | "BURNED";
-  unlock_at?: string;
-  isLocked?: boolean;
-}) {
+}: LetterItemProps) {
   const navigate = useNavigate();
   function handleNavigate(): void {
     if (isLocked) return;