fix: replace emoji with legend-compliant 📇 ☁️

Per maintainer request (punkpeye): replace non-standard emoji with
allowed legend emoji per README legend:
- 📇 = JavaScript/TypeScript codebase
- ☁️ = Cloud service (calls remote APIs)

README.md

@@ -1211,7 +1211,7 @@ Provides direct access to local file systems with configurable permissions. Enab
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