chore: remove region param from storage device

[ChiragAgg5k]

No description provided.

[Copilot]

Pull request overview

This PR simplifies storage device initialization by removing the region parameter and consolidating the logic into a new StorageFactory class. The old Device class is completely removed, eliminating multi-region support and environment variable fallbacks.

• Replaced Storage\Device class with new StorageFactory class
• Removed region parameter from storage device methods
• Simplified storage initialization to use DSN connection strings only
• Updated all usages in Docker.php and app/http.php

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
src/Executor/StorageFactory.php	New factory class that creates storage devices from DSN connection strings, replacing the old Device class with simplified logic
src/Executor/Storage/Device.php	Deleted old storage device class that supported multi-region configuration and environment variable fallbacks
src/Executor/Runner/Docker.php	Updated to use StorageFactory instead of Storage\Device, passing connection string directly to getDevice() method
app/http.php	Updated to instantiate StorageFactory instead of Storage\Device and pass it to the Docker runner

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