v1.3.3

Migrate the vendored fellow_aiden library from requests to aiohttp for fully async HTTP — no more executor thread wrapping.

Changes

• Replace requests with aiohttp, using an injected ClientSession from Home Assistant
• Add retry logic with exponential backoff for server errors (408/5xx)
• Add payload guards and cache invalidation for profile/schedule operations
• Fix schedule ID type mismatch
• Fix response resource leaks
• Improve auth error handling and connection cleanup