ci: add GitHub Actions for Next.js build and Python lint #2

	name: Next.js Build

	on:
	pull_request:
	branches:
	- main
	- rebranding/bishop-state
	paths:
	- "codebenders-dashboard/**"

	jobs:
	build:
	name: Type-check & build
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: codebenders-dashboard

	steps:
	- uses: actions/checkout@v4

	- uses: actions/setup-node@v4
	with:
	node-version: "20"

	- name: Install dependencies
	run: npm install --ignore-scripts

	- name: Build
	run: npm run build
	env:
	# Prevent Next.js from failing at build time due to missing runtime env vars.
	# The pg pool is only instantiated at request time, not during build.
	NEXT_PUBLIC_PLACEHOLDER: "ci"

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