⚡ perf: migrate Tailwind from PostCSS to Vite plugin

Migrate 4 web apps from @tailwindcss/postcss to @tailwindcss/vite:
- chat
- manadeck
- manacore
- presi

Changes per app:
- Replace @tailwindcss/postcss with @tailwindcss/vite in package.json
- Add tailwindcss() to vite.config.ts plugins array
- Delete postcss.config.js (no longer needed)

Benefits:
- Faster builds with native Vite integration
- Consistent build pipeline across all 14 web apps
- Simplified configuration (no separate PostCSS config)

apps/chat/apps/web/package.json

@@ -18,8 +18,8 @@
 		"@sveltejs/adapter-node": "^5.4.0",
 		"@sveltejs/kit": "^2.43.2",
 		"@sveltejs/vite-plugin-svelte": "^6.2.0",
-		"@tailwindcss/postcss": "^4.1.17",
 		"@tailwindcss/typography": "^0.5.19",
+		"@tailwindcss/vite": "^4.1.7",
 		"autoprefixer": "^10.4.21",
 		"postcss": "^8.5.6",
 		"svelte": "^5.39.5",

apps/chat/apps/web/postcss.config.js

@@ -1,5 +0,0 @@
-export default {
-	plugins: {
-		'@tailwindcss/postcss': {},
-	},
-};

apps/chat/apps/web/vite.config.ts

@@ -1,8 +1,9 @@
 import { sveltekit } from '@sveltejs/kit/vite';
+import tailwindcss from '@tailwindcss/vite';
 import { defineConfig } from 'vite';
 
 export default defineConfig({
-	plugins: [sveltekit()],
+	plugins: [sveltekit(), tailwindcss()],
 	server: {
 		port: 5174,
 		strictPort: true,

apps/manacore/apps/web/package.json

@@ -20,8 +20,8 @@
 		"@sveltejs/adapter-node": "^5.0.0",
 		"@sveltejs/kit": "^2.15.7",
 		"@sveltejs/vite-plugin-svelte": "^5.0.4",
-		"@tailwindcss/postcss": "^4.1.17",
 		"@tailwindcss/typography": "^0.5.19",
+		"@tailwindcss/vite": "^4.1.7",
 		"@types/node": "^22.10.5",
 		"@vitest/coverage-v8": "^4.0.14",
 		"@vitest/ui": "^4.0.14",

apps/manacore/apps/web/postcss.config.js

@@ -1,5 +0,0 @@
-export default {
-	plugins: {
-		'@tailwindcss/postcss': {},
-	},
-};

apps/manacore/apps/web/vite.config.ts

@@ -1,8 +1,9 @@
 import { sveltekit } from '@sveltejs/kit/vite';
+import tailwindcss from '@tailwindcss/vite';
 import { defineConfig } from 'vite';
 
 export default defineConfig({
-	plugins: [sveltekit()],
+	plugins: [sveltekit(), tailwindcss()],
 	server: {
 		port: 5173,
 		strictPort: true,

apps/manadeck/apps/web/package.json

@@ -16,7 +16,7 @@
 		"@sveltejs/adapter-auto": "^7.0.0",
 		"@sveltejs/kit": "^2.47.1",
 		"@sveltejs/vite-plugin-svelte": "^6.2.1",
-		"@tailwindcss/postcss": "^4.1.17",
+		"@tailwindcss/vite": "^4.1.7",
 		"@tailwindcss/typography": "^0.5.19",
 		"autoprefixer": "^10.4.22",
 		"postcss": "^8.5.6",

apps/manadeck/apps/web/postcss.config.js

@@ -1,5 +0,0 @@
-export default {
-	plugins: {
-		'@tailwindcss/postcss': {},
-	},
-};

apps/manadeck/apps/web/vite.config.ts

@@ -1,8 +1,9 @@
 import { sveltekit } from '@sveltejs/kit/vite';
+import tailwindcss from '@tailwindcss/vite';
 import { defineConfig } from 'vite';
 
 export default defineConfig({
-	plugins: [sveltekit()],
+	plugins: [sveltekit(), tailwindcss()],
 	server: {
 		port: 5176,
 		strictPort: true,

apps/presi/apps/web/package.json

@@ -16,9 +16,8 @@
 		"@sveltejs/adapter-node": "^5.0.0",
 		"@sveltejs/kit": "^2.0.0",
 		"@sveltejs/vite-plugin-svelte": "^5.0.0",
-		"@tailwindcss/postcss": "^4.1.17",
+		"@tailwindcss/vite": "^4.1.7",
 		"@types/node": "^20.0.0",
-		"postcss": "^8.4.32",
 		"prettier": "^3.1.1",
 		"prettier-plugin-svelte": "^3.1.2",
 		"svelte": "^5.0.0",

apps/presi/apps/web/postcss.config.js

@@ -1,5 +0,0 @@
-export default {
-	plugins: {
-		'@tailwindcss/postcss': {},
-	},
-};

apps/presi/apps/web/vite.config.ts

@@ -1,9 +1,10 @@
 import { sveltekit } from '@sveltejs/kit/vite';
+import tailwindcss from '@tailwindcss/vite';
 import { defineConfig } from 'vite';
 import path from 'path';
 
 export default defineConfig({
-	plugins: [sveltekit()],
+	plugins: [sveltekit(), tailwindcss()],
 	server: {
 		port: 5178,
 		strictPort: true,