Fix Studio Assistant download plugins wp-cli commands by mounting Studio mu-plugins

[sejas]

Related issues

• Fixes STU-1126

Proposed Changes

• Mount Studio mu-plugins before executing a wp-cli command

Testing Instructions

Confirm the issue is fixed

• Run npm start
• Go to the Assistant tab
• Ask to install woocommerce
• Execute the wp-cli command
• Confirm that it works as expected and the plugin is installed
• Go to the mu-plugins folder of your site and confirm there is no new files. Only the sqlite-database-integration.

Try other wp-cli commands like sqlite export

• Go to the Import/Export tab
• Export your site
• Confirm that the site is correctly exported

Before	After

Pre-merge Checklist

• Have you checked for TypeScript, React or other console errors?

[github-actions]

📊 Performance Test Results

Comparing cf99292 vs trunk

site-editor

Metric	trunk	cf99292	Diff	Change
load	10194.00 ms	9383.00 ms	-811.00 ms	🟢 -8.0%

site-startup

Metric	trunk	cf99292	Diff	Change
siteCreation	16323.00 ms	16337.00 ms	+14.00 ms	🔴 0.1%
siteStartup	6992.00 ms	6955.00 ms	-37.00 ms	🟢 -0.5%

---

Results are median values from multiple test runs.

Legend: 🟢 Improvement (faster) | 🔴 Regression (slower) | ⚪ No change

[epeicher]

Thanks for fixing this @sejas! I have tested it, and it works as expected, I can install WooCommerce using the Assistant now. Code changes also LGTM!

Before	After	WooCommerce installed

[ivan-ottinger]

Works great! I can confirm the proposed changes fix the issue. WP CLI plugin installation runs as expected:

and there are no extra files added:

Site export works as well. 👍🏼

---

The changes themselves look good to me too. It may be worth having a second pair of eyes look at them since I haven't reviewed many Playground CLI related changes yet and could be missing something there.

[wojtekn]

@sejas, would you mind sharing more details on what caused the issue and why mounting mu-plugins resolved it?

[sejas]

@sejas, would you mind sharing more details on what caused the issue and why mounting mu-plugins resolved it?

@wojtekn, the issue was that some WP-CLI commands didn't work, specifically those that had to download a file from wp.org, such as installing a plugin or theme. We have a mu-plugin, 0-allowed-redirect-hosts.php, that helps resolving those domains.

When we switched from wp-now to playground-cli, we also changed how Studio mu-plugins are mounted, mounting them only when Studio starts and not when executing wp-cli commands. In this PR, I'm mounting the Studio mu-plugins for wp-cli executions as well. Now, wp-cli executions and Studio start sites will behave more similarly.