reload env file on hot reload in granian

[adhami3310]

No description provided.

[greptile-apps]

PR Summary

Added support for automatic environment variable reloading in Granian hot reload mode, improving developer experience by ensuring .env file changes are reflected without manual server restarts.

• Added _reload_hook in reflex/utils/exec.py to handle environment reloading during Granian hot reload events
• Moved dotenv loading logic from config.py to environment.py for better code organization
• Added _load_dotenv_from_str and _load_dotenv_from_env in environment.py to handle colon-separated env file paths
• Updated Granian dependency to >=2.4.0 in pyproject.toml to support new reload functionality

_{4 files reviewed, 1 comment
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[codspeed-hq]

CodSpeed Performance Report

Merging #5510 will not alter performance

_{Comparing reload-env-file-on-hot-reload-in-granian (397460e) with main (5128f44)}

Summary

✅ 8 untouched benchmarks

[gi0baro]

@adhami3310 it seems to me you can actually get rid of the hook and directly pass env_files to Granian constructor (with 2.4.0 it loads those files on reload both on the main process and in the workers when they start).

edit: see https://github.com/emmett-framework/granian/blob/v2.4.0/granian/server/common.py#L479

[adhami3310]

@gi0baro that seems cleaner, i will look into it, thanks for the comment :D