Use modal install step consistently

public/sw.js

@@ -1,4 +1,4 @@
-const CACHE_NAME = 'l484-pwa-v11'
+const CACHE_NAME = 'l484-pwa-v12'
 const APP_SHELL = [
   '/',
   '/manifest.webmanifest',

src/App.vue

@@ -382,7 +382,7 @@ const pwaInstallPrimaryLabel = computed(() => {
   if (isPwaStandalone.value) return 'Continue signup'
   if (deferredInstallPrompt.value) return 'Install app'
   if (installPlatform.value === 'ios') return 'I installed it'
-  return 'Install app'
+  return 'Continue'
 })
 const membershipBtcAmount = computed(() =>
   bitcoinUsdPrice.value ? MEMBERSHIP_MONTHLY_USD / bitcoinUsdPrice.value : 0,
@@ -830,10 +830,6 @@ const startSignup = async () => {
     signupStep.value = 2
     return
   }
-  if (installPlatform.value === 'desktop' || installPlatform.value === 'android') {
-    signupStep.value = 2
-    return
-  }
   signupStep.value = 1
 }
 
@@ -3464,17 +3460,6 @@ watch(mobileMenuOpen, (open) => {
                 Complete signup here, then come to the center to pick up your physical member card and pay in person.
               </p>
             </div>
-            <div v-if="installPlatform !== 'ios' && !isPwaStandalone" class="membership-pickup-card optional-install-card">
-              <span class="membership-pickup-icon" aria-hidden="true">
-                <img src="/images/app-icon-192.png" alt="" />
-              </span>
-              <div>
-                <p>Install the L484 app for a better member card and notification experience.</p>
-                <button class="secondary-action compact-action" type="button" @click="handlePwaInstallPrimary">
-                  Install app
-                </button>
-              </div>
-            </div>
           </div>
 
           <div v-if="signupStep === 1" class="pwa-install-step">

src/style.css

@@ -3193,15 +3193,6 @@ body.menu-open {
   line-height: 1.55;
 }
 
-.optional-install-card > div {
-  display: grid;
-  gap: 0.75rem;
-}
-
-.optional-install-card .secondary-action {
-  justify-self: start;
-}
-
 .membership-pickup-icon {
   display: grid;
   width: 3rem;