feat: redirect root to sign_in when logged out, remove landing page

app/controllers/dashboard_controller.rb

@@ -39,6 +39,6 @@ class DashboardController < ApplicationController
   def maybe_render_landing
     return if signed_in?
 
-    render 'pages/landing'
+    redirect_to new_user_session_path
   end
 end

app/views/devise/sessions/new.html.erb

@@ -1,9 +1,9 @@
 <%= content_for(:canonical_url, new_user_session_url) %>
 <% content_for(:hide_navbar, true) %>
 <% content_for(:full_width, true) %>
-<section class="relative min-h-screen overflow-hidden -mx-4 -mt-3 sm:-mx-2" style="background-color: #faf7f5;">
-  <div class="absolute inset-x-0 top-0 z-0 h-[40vh] bg-no-repeat"
-       style="background-image: url('/images/login-top-bg.svg'); background-size: cover;">
+<section class="relative min-h-screen overflow-hidden bg-white -mx-[50vw] left-[50%] right-[50%] w-screen">
+  <div class="absolute inset-x-0 top-0 z-0 h-[40vh]"
+       style="background-image: url('/images/login-top-bg.svg'); background-size: cover; background-repeat: no-repeat; background-position: center top;">
   </div>
   <div class="relative z-10 flex min-h-screen items-center justify-center pb-[20vh]">
     <div class="w-full max-w-sm bg-white p-5 text-slate-900 rounded-lg border border-gray-200 shadow-md">