feat: add AI command suggestions extension for Tiptap editor

- Implemented Commands plugin to handle command suggestions triggered by '@' character.
- Created suggestion configuration to filter and render command items.
- Added various command items including date, time, formatting, templates, and task management commands.
- Introduced CSS styles for the Tiptap editor to enhance UI.
- Configured TypeScript settings and Vite build for the project.

package.json

@@ -0,0 +1,67 @@
+{
+  "name": "@kevisual/kv-md",
+  "version": "0.0.1",
+  "description": "",
+  "basename": "/root/kv-md",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "build:lib": "vite build --config vite.config.lib.ts",
+    "prepub": "rm -rf ./dist && rimraf ./pack-dist && pnpm run build:test",
+    "pub": "envision deploy ./dist -k kv-md -v 0.0.1"
+  },
+  "keywords": [],
+  "author": "abearxiong <xiongxiao@xiongxiao.me> (https://www.xiongxiao.me)",
+  "license": "MIT",
+  "packageManager": "pnpm@10.25.0",
+  "type": "module",
+  "files": [
+    "dist",
+    "mod.ts",
+    "src"
+  ],
+  "dependencies": {
+    "@kevisual/app": "^0.0.1",
+    "@kevisual/context": "^0.0.4",
+    "@tiptap/core": "^3.13.0",
+    "@tiptap/extension-code-block-lowlight": "^3.13.0",
+    "@tiptap/extension-dropcursor": "^3.13.0",
+    "@tiptap/extension-highlight": "^3.13.0",
+    "@tiptap/extension-placeholder": "^3.13.0",
+    "@tiptap/extension-typography": "^3.13.0",
+    "@tiptap/pm": "^3.13.0",
+    "@tiptap/starter-kit": "^3.13.0",
+    "@tiptap/suggestion": "^3.13.0",
+    "dayjs": "^1.11.19",
+    "highlight.js": "^11.11.1",
+    "lit-html": "^3.3.1",
+    "lowlight": "^3.3.0",
+    "nanoid": "^5.1.6",
+    "react": "^19.2.1",
+    "react-dom": "^19.2.1",
+    "tiptap-markdown": "^0.9.0",
+    "zustand": "^5.0.9"
+  },
+  "devDependencies": {
+    "@kevisual/query": "0.0.31",
+    "@kevisual/types": "^0.0.10",
+    "@tailwindcss/vite": "^4.1.17",
+    "@types/bun": "^1.3.4",
+    "@types/node": "^24.10.2",
+    "@types/react": "^19.2.7",
+    "@types/react-dom": "^19.2.3",
+    "@vitejs/plugin-react": "^5.1.2",
+    "dotenv": "^17.2.3",
+    "tailwindcss": "^4.1.17",
+    "vite": "^7.2.7"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "exports": {
+    ".": "./dist/kv-md.js",
+    "./kv-md.js": "./dist/kv-md.js",
+    "./kv-md.css": "./dist/kv-md.css",
+    "./mod.ts": "./mod.ts"
+  }
+}