Make direct direnv loading default

[WeetHet]

I've been running with direct direnv loading for a while now and haven't experienced any significant issues other than #18473. Making it default would make direnv integration more reliable and consistent. I've also updated the docs a bit to ensure that they represent current status of direnv integration

Release Notes:

• Made direnv integration use direct (direnv export json) mode by default instead of relying on a shell hook, improving consistency and reliability of direnv detection

[mrnugget]

Thanks!

[mrnugget]

Ah damn, maybe I was too quick to merge. What happens now if someone doesn't have direnv installed? Won't we then always try to spawn the process and fail and put noise in the logs?

[WeetHet]

Ah damn, maybe I was too quick to merge. What happens now if someone doesn't have direnv installed? Won't we then always try to spawn the process and fail and put noise in the logs?

It's fine, we check for direnv and if there's none we return Ok(None), which gets us an empty direnv environment and no spam in the logs

[WeetHet]

zed/crates/project/src/environment.rs

Lines 188 to 190 in 215bce1

	let Ok(direnv_path) = which::which("direnv") else {
	return Ok(None);
	};

[mrnugget]

Sweet, thanks!