Docs: npm global install is unsupported but not documented

[magentaqin]

Link
Supabase CLI documentation → Node.js installation tab
https://supabase.com/docs/guides/local-development/cli/getting-started?queryGroups=platform&platform=npm

Describe the problem
The CLI itself throws a clear error when attempting a global npm installation: "Installing Supabase CLI as a global module is not supported."
However, the documentation does not mention that:
• Global installation via npm install -g supabase is no longer supported
• Only npx supabase or installing locally via npm install supabase --save-dev works
• Users are expected to use Homebrew, Scoop, or standalone binaries for global usage

This may confuse users coming from older versions of the CLI, where npm -g supabase was previously supported.

Describe the improvement
Add a clear note in the Node.js tab such as:

“Global installation using npm install -g supabase is not supported.
For global use, please install via Homebrew, Scoop, or the standalone binary.”

Additional context

[omwanere]

Hi 👋
I’d like to work on this by updating the CLI documentation to clearly mention that global npm installation is unsupported and point users to the recommended alternatives.
I’ll open a PR shortly. Thanks!