Fix button roundtrip in editor, alignment persistence, and test email rendering

admin-spa/package-lock.json

@@ -57,6 +57,7 @@
                 "zustand": "^5.0.8"
             },
             "devDependencies": {
+                "@tailwindcss/typography": "^0.5.19",
                 "@types/react": "^18.3.5",
                 "@types/react-dom": "^18.3.0",
                 "@typescript-eslint/eslint-plugin": "^8.46.3",
@@ -2898,6 +2899,33 @@
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             "license": "MIT"
         },
+        "node_modules/@tailwindcss/typography": {
+            "version": "0.5.19",
+            "resolved": "https://registry.npmjs.org/@tailwindcss/typography/-/typography-0.5.19.tgz",
+            "integrity": "sha512-w31dd8HOx3k9vPtcQh5QHP9GwKcgbMp87j58qi6xgiBnFFtKEAgCWnDw4qUT8aHwkCp8bKvb/KGKWWHedP0AAg==",
+            "dev": true,
+            "license": "MIT",
+            "dependencies": {
+                "postcss-selector-parser": "6.0.10"
+            },
+            "peerDependencies": {
+                "tailwindcss": ">=3.0.0 || insiders || >=4.0.0-alpha.20 || >=4.0.0-beta.1"
+            }
+        },
+        "node_modules/@tailwindcss/typography/node_modules/postcss-selector-parser": {
+            "version": "6.0.10",
+            "resolved": "https://registry.npmjs.org/postcss-selector-parser/-/postcss-selector-parser-6.0.10.tgz",
+            "integrity": "sha512-IQ7TZdoaqbT+LCpShg46jnZVlhWD2w6iQYAcYXfHARZ7X1t/UGhhceQDs5X0cGqKvYlHNOuv7Oa1xmb0oQuA3w==",
+            "dev": true,
+            "license": "MIT",
+            "dependencies": {
+                "cssesc": "^3.0.0",
+                "util-deprecate": "^1.0.2"
+            },
+            "engines": {
+                "node": ">=4"
+            }
+        },
         "node_modules/@tanstack/query-core": {
             "version": "5.90.5",
             "resolved": "https://registry.npmjs.org/@tanstack/query-core/-/query-core-5.90.5.tgz",