Add caffeinate plugin to prevent blocking sleep commands

This plugin intercepts sleep commands in Bash and prompts Claude to use
background execution (run_in_background: true) instead. This keeps the
session responsive during long-running operations.

Features:
- Blocks sleep commands with helpful retry message
- Allows sleep in quoted strings (false positive prevention)
- Catches sleep in compound commands (&&, ||, ;) and loops
- Allows background commands through (run_in_background: true)

🏠 Remote-Dev: homespace

Claude-Generated-By: Claude Code (cli/claude-opus-4-5=100%)
Claude-Steers: 6
Claude-Permission-Prompts: 0
Claude-Escapes: 0

plugins/caffeinate/.claude-plugin/plugin.json

@@ -0,0 +1,10 @@
+{
+  "name": "caffeinate",
+  "version": "0.1.0",
+  "description": "Blocks sleep commands and reminds Claude to use background tasks instead",
+  "author": {
+    "name": "Anthropic",
+    "email": "support@anthropic.com"
+  },
+  "keywords": ["productivity", "hooks", "bash", "background-tasks"]
+}