Make npm default manager

Author: Vlad Lo.

.gitattributes

@@ -9,16 +9,6 @@
 .cache-loader
 .idea
 
-# yarn v3 (w/o zero-install)
-# See: https://yarnpkg.com/getting-started/qa#which-files-should-be-gitignored
-.pnp.*
-.yarn/*
-!.yarn/patches
-!.yarn/plugins
-!.yarn/releases
-!.yarn/sdks
-!.yarn/versions
-
 # Misc
 .DS_Store
 .env.local
@@ -27,8 +17,6 @@
 .env.production.local
 
 npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
 .vercel
 .envrc
 .env

.gitignore

@@ -251,5 +251,5 @@ export SEGMENT_ANALYTICS_KEY="<your key>"
 Then build the project in production mode using the following command:
 
 ```bash
-yarn build && yarn serve
+npm run build && npm run serve
 ```

.yarn/plugins/@yarnpkg/plugin-allow-scripts.cjs

@@ -35,13 +35,13 @@ Build the documentation site locally using the following steps.
 2. Install dependencies.
 
    ```bash
-   yarn install
+   npm install
    ```
 
 3. Start the development server.
 
    ```bash
-   yarn start
+   npm start
    ```
 
    Once the server starts, you can view the documentation at `http://localhost:3000`.

.yarn/releases/yarn-3.4.1.cjs

@@ -19,7 +19,6 @@ export default [{
         "**/.eslintrc.js",
         "node_modules/*",
         ".docusaurus/*",
-        ".yarn",
         "**/*.md",
         "**/*.mdx",
         "static/*",