chore: setup TypeScript 6 and pnpm with mise

- Add mise.toml with pnpm latest
- Create root workspace with pnpm-workspace.yaml
- Upgrade TypeScript from 5.9.3 to 6.0.3 in apps/web
- Add vite-env.d.ts for CSS module type declarations
- Switch from npm to pnpm package management

apps/web/package.json

@@ -10,14 +10,16 @@
     "typecheck": "tsc --noEmit"
   },
   "dependencies": {
+    "katex": "^0.16.45",
     "lucide-preact": "^1.14.0",
+    "mermaid": "^11.14.0",
     "preact": "^10.27.2",
     "preact-iso": "^2.9.3"
   },
   "devDependencies": {
     "@preact/preset-vite": "^2.10.2",
     "prettier": "^3.6.2",
-    "typescript": "^5.9.3",
+    "typescript": "^6.0.3",
     "vite": "^7.1.12"
   }
 }

apps/web/src/vite-env.d.ts

@@ -0,0 +1,6 @@
+/// <reference types="vite/client" />
+
+declare module "*.css" {
+  const content: string;
+  export default content;
+}

mise.toml

@@ -0,0 +1,2 @@
+[tools]
+pnpm = "latest"

package.json

@@ -0,0 +1,11 @@
+{
+  "name": "md-hub-secure",
+  "version": "1.0.0",
+  "private": true,
+  "packageManager": "pnpm@10.10.0",
+  "scripts": {
+    "dev": "pnpm --filter web dev",
+    "build": "pnpm --filter web build",
+    "typecheck": "pnpm --filter web typecheck"
+  }
+}

pnpm-workspace.yaml

@@ -0,0 +1,2 @@
+packages:
+  - 'apps/*'