docs(cursor): Add marketing copy and value proposition messaging

Add compelling marketing copy to Cursor documentation with consistent
messaging across all files:

- README.md: Added headline, "Why Claude-Mem?" section, quick install
- STANDALONE-SETUP.md: Added tagline and enhanced value props
- QUICKSTART.md: Added tagline and benefit statement
- docs/public/cursor/index.mdx: Added card grid highlighting benefits

Key messaging themes:
- "Persistent AI Memory for Cursor"
- "Your AI stops forgetting"
- "Free tier options available"
- "Works with or without Claude Code"

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

cursor-hooks/README.md

@@ -1,6 +1,28 @@
 # Claude-Mem Cursor Hooks Integration
 
-This directory contains Cursor hooks that connect claude-mem to Cursor, enabling persistent memory across Cursor sessions.
+> **Persistent AI Memory for Cursor - Free Options Available**
+
+Give your Cursor AI persistent memory across sessions. Your agent remembers what it worked on, the decisions it made, and the patterns in your codebase - automatically.
+
+### Why Claude-Mem?
+
+- **Remember context across sessions**: No more re-explaining your codebase every time
+- **Automatic capture**: MCP tools, shell commands, and file edits are logged without effort
+- **Free tier options**: Works with Gemini (1500 free req/day) or OpenRouter (free models available)
+- **Works with or without Claude Code**: Full functionality either way
+
+### Quick Install (5 minutes)
+
+```bash
+# Clone and build
+git clone https://github.com/thedotmack/claude-mem.git
+cd claude-mem && npm install && npm run build
+
+# Interactive setup (configures provider + installs hooks)
+npm run cursor:setup
+```
+
+---
 
 ## Quick Start for Cursor Users