Add Node.js prerequisite check to make deps target

[Copilot]

The make deps target silently fails in environments without Node.js, causing prettier to install but be non-functional, leading to cryptic "node: not found" errors during make deps-dev.

Changes

• Makefile: Added Node.js/npm availability check before installing prettier

  • Fails fast with installation instructions for nvm, Ubuntu/Debian, and macOS
  • Follows existing pattern from golint target

• Documentation: Added Node.js 24+ to prerequisites in CONTRIBUTING.md and DEVGUIDE.md

• Devcontainer: Added explicit nvm configuration to .devcontainer/devcontainer.json

  • Added nvmVersion: "latest" to ensure nvm is available in the development container
  • Complements existing Node.js 24 configuration

Error Message

$ make deps  # without Node.js installed

Node.js and npm are required but not installed.
Please install Node.js (version 24 or later recommended) using one of these methods:

Using nvm (recommended):
  curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.0/install.sh | bash
  source ~/.bashrc  # or source ~/.zshrc
  nvm install 24

On Ubuntu/Debian:
  curl -fsSL https://deb.nodesource.com/setup_24.x | sudo -E bash -
  sudo apt-get install -y nodejs
...

Fixes #4160

Original prompt

---

This section details on the original issue you should resolve

<issue_title>make deps-dev fails because of missing prettier/node installation</issue_title>
<issue_description>small issue when setup a dev environment in a clean ubuntu

make deps-dev fails with the error below.

looking into the makefile, it seems that prettier is missing despite it is installed as prerequisite
npm install -g prettier

merklbe1@H69LST3:~/gh-aw$ prettier
/mnt/c/Users/merklbe1/AppData/Roaming/npm/prettier: 15: exec: node: not found

possible fix: install node automatically via the dependencies

merklbe1@H69LST3:~/gh-aw$ make deps-dev
go mod download
go mod tidy
go install golang.org/x/tools/gopls@latest
go: golang.org/x/tools/gopls@v0.20.0 requires go >= 1.24.2; switching to go1.24.10
go install github.com/rhysd/actionlint/cmd/actionlint@latest
go: github.com/rhysd/actionlint@v1.7.8 requires go >= 1.24.0; switching to go1.24.10
npm install -g prettier

changed 1 package in 1s

1 package is looking for funding
  run `npm fund` for details
Downloading GitHub Actions workflow schema...
Formatting schema with prettier...
make: *** [Makefile:136: download-github-actions-schema] Error 127
```</issue_description>

## Comments on the Issue (you are @copilot in this section)

<comments>
</comments>

• Fixes make deps-dev fails because of missing prettier/node installation #4167

---

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[pelikhan]

@copilot make sure devcontainer.json has node and nvm installed

[Copilot]

@copilot make sure devcontainer.json has node and nvm installed

Added explicit nvm configuration to devcontainer.json. The node feature now includes "nvmVersion": "latest" to ensure nvm is available in the development container. (bf303fc)

[Copilot]

Pull Request Overview

This PR addresses issue #4160 by adding prerequisite checks and documentation to prevent silent failures when Node.js is not installed. The make deps target previously would silently install prettier without Node.js, leading to cryptic "node: not found" errors during subsequent development tasks.

Key changes:

• Added fail-fast Node.js/npm availability check to make deps target with helpful installation instructions
• Updated prerequisites documentation in CONTRIBUTING.md and DEVGUIDE.md to explicitly require Node.js 24+
• Enhanced devcontainer configuration with explicit nvm support

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
Makefile	Added Node.js prerequisite check before prettier installation with detailed installation instructions for nvm, Ubuntu/Debian, and macOS
DEVGUIDE.md	Added comprehensive prerequisites section documenting Node.js 24+ requirement along with Go, GitHub CLI, and Git
CONTRIBUTING.md	Added Node.js 24+ to prerequisites list for consistency with DEVGUIDE.md
.devcontainer/devcontainer.json	Added nvmVersion: "latest" to node feature configuration to ensure nvm availability in development containers

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[Copilot]

[nitpick] The error message spans many lines (lines 124-142) which makes the Makefile harder to read and maintain. Following the pattern from the golint target (lines 165-174), consider extracting the installation instructions to a smaller, more focused message or using a here-document for better readability.

Example approach similar to golint:

@if command -v node >/dev/null 2>&1 && command -v npm >/dev/null 2>&1; then \
	npm install -g prettier; \
else \
	echo "Node.js and npm are required but not installed."; \
	echo "Install Node.js 24+ using nvm (recommended), package manager, or see:"; \
	echo "  https://nodejs.org/en/download/package-manager"; \
	exit 1; \
fi

This maintains the fail-fast behavior while keeping the Makefile more maintainable.

Suggested change

	echo ""; \
	echo "Node.js and npm are required but not installed."; \
	echo "Please install Node.js (version 24 or later recommended) using one of these methods:"; \
	echo ""; \
	echo "Using nvm (recommended):"; \
	echo " curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.0/install.sh | bash"; \
	echo " source ~/.bashrc # or source ~/.zshrc"; \
	echo " nvm install 24"; \
	echo ""; \
	echo "On Ubuntu/Debian:"; \
	echo " curl -fsSL https://deb.nodesource.com/setup_24.x | sudo -E bash -"; \
	echo " sudo apt-get install -y nodejs"; \
	echo ""; \
	echo "On macOS with Homebrew:"; \
	echo " brew install node"; \
	echo ""; \
	echo "For other platforms, see: https://nodejs.org/en/download/package-manager"; \
	echo ""; \
	echo "Node.js and npm are required but not installed."; \
	echo "Please install Node.js (version 24 or later recommended). See:"; \
	echo " https://nodejs.org/en/download/package-manager"; \