Add installation instructions to LSP plugin READMEs

Each README now includes:
- Supported file extensions
- Installation commands for different platforms/package managers
- Links to project websites and documentation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

plugins/typescript-lsp/README.md

@@ -1,8 +1,24 @@
 # typescript-lsp
 
-This plugin provides LSP (Language Server Protocol) integration for Claude Code.
+TypeScript/JavaScript language server for Claude Code, providing code intelligence features like go-to-definition, find references, and error checking.
 
-## Requirements
+## Supported Extensions
+`.ts`, `.tsx`, `.js`, `.jsx`, `.mts`, `.cts`, `.mjs`, `.cjs`
 
-The corresponding language server must be installed on your system. The plugin will be recommended when you edit files with the supported extensions and have the language server binary available.
+## Installation
 
+Install the TypeScript language server globally via npm:
+
+```bash
+npm install -g typescript-language-server typescript
+```
+
+Or with yarn:
+
+```bash
+yarn global add typescript-language-server typescript
+```
+
+## More Information
+- [typescript-language-server on npm](https://www.npmjs.com/package/typescript-language-server)
+- [GitHub Repository](https://github.com/typescript-language-server/typescript-language-server)