karakeep-install: Disable Playwright browser download, remove MCP build

[vhsdream]

✍️ Description

• changes export during install to disable automatic browser downloading by Playwright
• removes yarn
• removes MCP build
• performs pnpm store prune after install/update to remove extraneous packages

🔗 Related PR / Issue

Link: #5697

✅ Prerequisites (X in brackets)

• Self-review completed – Code follows project standards.
• Tested thoroughly – Changes work as expected.
• No security risks – No hardcoded secrets, unnecessary privilege escalations, or permission issues.

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🛠️ Type of Change (X in brackets)

• 🐞 Bug fix – Resolves an issue without breaking functionality.
• ✨ New feature – Adds new, non-breaking functionality.
• 💥 Breaking change – Alters existing functionality in a way that may require updates.
• 🆕 New script – A fully functional and tested script or script set.
• 🌍 Website update – Changes to website-related JSON files or metadata.
• 🔧 Refactoring / Code Cleanup – Improves readability or maintainability without changing functionality.
• 📝 Documentation update – Changes to README, AppName.md, CONTRIBUTING.md, or other docs.

[CrazyWolf13]

what is mcp and why remove it?

[vhsdream]

It's the Model Context Protocol server and apparently does not need to be built for our use-case. Doesn't really save space or anything but I think it's good to have this script have parity with the install script in the Karakeep repo.

[vhsdream]

For some reason I didn't notice that the Karakeep repo script has "true instead of 1 as the playwright export; changed it here, as well as added the export to the update script so it doesn't pull the browser on an update.

[vhsdream]

OK this is ready finally, but I won't take off draft until the next Karakeep update is out.

[MickLesk]

Any eta?

[vhsdream]

Your guess is as good as mine 😉

[MickLesk]

@MohamedBassem ? 😄

[MohamedBassem]

@vhsdream why do you need to wait for the next release? If you keep both puppeteer/playwright skip downloads, we should be good to go right?

That being said, I'm aiming for a release this weekend, but I recommend not waiting for it.