docs: add comprehensive roadmap for email service improvements

pnpm-lock.yaml

@@ -20,6 +20,9 @@ importers:
       '@urql/exchange-auth':
         specifier: ^1.0.0
         version: 1.0.0(graphql@16.8.1)
+      handlebars:
+        specifier: ^4.7.9
+        version: 4.7.9
       next:
         specifier: 15.5.9
         version: 15.5.9(@babel/core@7.24.0)(@opentelemetry/api@1.9.0)(react-dom@18.3.1(react@18.3.1))(react@18.3.1)
@@ -3302,6 +3305,11 @@ packages:
     resolution: {integrity: sha512-59LZHPdGZVh695Ud9lRzPBVTtlX9ZCV150Er2W43ro37wVof0ctenSaskPPjN7lVTIN8mSZt8PHUNKZuNQUuxw==}
     engines: {node: ^12.22.0 || ^14.16.0 || ^16.0.0 || >=17.0.0}
 
+  handlebars@4.7.9:
+    resolution: {integrity: sha512-4E71E0rpOaQuJR2A3xDZ+GM1HyWYv1clR58tC8emQNeQe3RH7MAzSbat+V0wG78LQBo6m6bzSG/L4pBuCsgnUQ==}
+    engines: {node: '>=0.4.7'}
+    hasBin: true
+
   has-bigints@1.0.2:
     resolution: {integrity: sha512-tSvCKtBr9lkF0Ex0aQiP9N+OpV4zi2r/Nee5VkRDbaqv35RLYMzbwQfFSZZH0kR+Rd6302UJZ2p/bJCEoR3VoQ==}
 
@@ -3865,6 +3873,9 @@ packages:
   natural-compare@1.4.0:
     resolution: {integrity: sha512-OWND8ei3VtNC9h7V60qff3SVobHr996CTwgxubgyQYEpg290h9J0buyECNNJexkFm5sOajh5G116RYA1c8ZMSw==}
 
+  neo-async@2.6.2:
+    resolution: {integrity: sha512-Yd3UES5mWCSqR+qNT93S3UoYUkqAZ9lLg8a7g9rimsWmYGK8cVToA4/sF3RrshdyV3sAGMXVUmpMYOw+dLpOuw==}
+
   next@15.5.9:
     resolution: {integrity: sha512-agNLK89seZEtC5zUHwtut0+tNrc0Xw4FT/Dg+B/VLEo9pAcS9rtTKpek3V6kVcVwsB2YlqMaHdfZL4eLEVYuCg==}
     engines: {node: ^18.18.0 || ^19.8.0 || >= 20.0.0}
@@ -4735,6 +4746,11 @@ packages:
   ufo@1.5.3:
     resolution: {integrity: sha512-Y7HYmWaFwPUmkoQCUIAYpKqkOf+SbVj/2fJJZ4RJMCfZp0rTGwRbzQD+HghfnhKOjL9E01okqz+ncJskGYfBNw==}
 
+  uglify-js@3.19.3:
+    resolution: {integrity: sha512-v3Xu+yuwBXisp6QYTcH4UbH+xYJXqnq2m/LtQVWKWzYc1iehYnLixoQDN9FH6/j9/oybfd6W9Ghwkl8+UMKTKQ==}
+    engines: {node: '>=0.8.0'}
+    hasBin: true
+
   unbox-primitive@1.0.2:
     resolution: {integrity: sha512-61pPlCD9h51VoreyJ0BReideM3MDKMKnh6+V9L08331ipq6Q8OFXZYiqP6n/tbHx4s5I9uRhcye6BrbkizkBDw==}
 
@@ -4951,6 +4967,9 @@ packages:
   wonka@6.3.4:
     resolution: {integrity: sha512-CjpbqNtBGNAeyNS/9W6q3kSkKE52+FjIj7AkFlLr11s/VWGUu6a2CdYSdGxocIhIVjaW/zchesBQUKPVU69Cqg==}
 
+  wordwrap@1.0.0:
+    resolution: {integrity: sha512-gvVzJFlPycKc5dZN4yPkP8w7Dc37BtP1yczEneOb4uq34pXZcvrtRTmWV8W+Ume+XCxKgbjM+nevkyFPMybd4Q==}
+
   wrap-ansi@6.2.0:
     resolution: {integrity: sha512-r6lPcBGxZXlIcymEu7InxDMhdW0KDxpLgoFLcguasxCaJ/SOIZwINatK9KY/tf+ZrlywOKU0UDj3ATXUBfxJXA==}
     engines: {node: '>=8'}
@@ -8769,6 +8788,15 @@ snapshots:
 
   graphql@16.8.1: {}
 
+  handlebars@4.7.9:
+    dependencies:
+      minimist: 1.2.8
+      neo-async: 2.6.2
+      source-map: 0.6.1
+      wordwrap: 1.0.0
+    optionalDependencies:
+      uglify-js: 3.19.3
+
   has-bigints@1.0.2: {}
 
   has-flag@3.0.0: {}
@@ -9357,6 +9385,8 @@ snapshots:
 
   natural-compare@1.4.0: {}
 
+  neo-async@2.6.2: {}
+
   next@15.5.9(@babel/core@7.24.0)(@opentelemetry/api@1.9.0)(react-dom@18.3.1(react@18.3.1))(react@18.3.1):
     dependencies:
       '@next/env': 15.5.9
@@ -9995,8 +10025,7 @@ snapshots:
 
   source-map-js@1.2.0: {}
 
-  source-map@0.6.1:
-    optional: true
+  source-map@0.6.1: {}
 
   spawndamnit@2.0.0:
     dependencies:
@@ -10249,6 +10278,9 @@ snapshots:
 
   ufo@1.5.3: {}
 
+  uglify-js@3.19.3:
+    optional: true
+
   unbox-primitive@1.0.2:
     dependencies:
       call-bind: 1.0.2
@@ -10492,6 +10524,8 @@ snapshots:
 
   wonka@6.3.4: {}
 
+  wordwrap@1.0.0: {}
+
   wrap-ansi@6.2.0:
     dependencies:
       ansi-styles: 4.3.0