feat(dev-server): Allow overriding host for dev server up

[renanmedina]

📋 Overview

This pull request lets the PHP built-in server used by dev:up bind to a configurable host (default localhost), with optional overrides via --host / -h, matching how port is already configurable. It is intended for environments where listening only on localhost is not enough (for example, access from another interface or container).

Related

#9

🎯 Key Changes

Default host in dev config

• Published dev.host in packages/dev-server/config/dev.php with default localhost so projects can override it in their own config.

dev:up command behavior

• Resolves bind address from CLI (--host, -h) first, then dev.host from config.
• Builds php -S with that host and port; startup message reflects the same host and port.

Tests

• Default fake config includes dev.host.
• Adds coverage for reading host from config (dev.host).

📝 Technical Details

File	Change
packages/dev-server/config/dev.php	Added host key defaulting to localhost.
packages/dev-server/src/Command/DevUpCommand.php	Resolve $host from input and config; use it in php -S and in the user-facing startup line.
packages/dev-server/tests/Command/DevUpCommandTest.php	Default dev.host in test helper; new test asserting php -S uses configured host.

✅ Testing

• Run ./vendor/bin/pest packages/dev-server/tests/Command/DevUpCommandTest.php (or full suite with ./vendor/bin/pest --parallel).
• Manually run marko dev:up (or marko up) with --host=0.0.0.0 and confirm the process listens on the expected address.

🚀 Deployment Notes

• No deployment or migration steps. Existing installs keep behavior equivalent to the previous hardcoded localhost unless they set dev.host or pass --host / -h.