feat: More efficient equal area projection #6

	name: api-parity

	# Verify the TS/Python/Rust ports expose the same public API. The check reads each
	# port's public entrypoint; with --remote it fetches them from the published GitHub
	# repos (raw), so no sibling checkout is needed. See API_PARITY.md.

	on:
	pull_request:
	schedule:
	# Weekly drift monitor across the three published repos (Mondays 06:00 UTC).
	- cron: '0 6 * * 1'
	workflow_dispatch:

	permissions:
	contents: read

	jobs:
	# On a TS PR: check the PR's local index.ts against the published PY/RS repos.
	parity-pr:
	if: github.event_name == 'pull_request'
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
	- name: Check API parity (local TS vs PY/RS at the PR branch, else main)
	run: python3 scripts/check_api_parity.py --check --remote --local TS --branch "$HEAD_REF"
	env:
	# Prefer a same-named branch on the sibling repos so a coordinated breaking
	# change validates against the in-flight branches, not main.
	HEAD_REF: ${{ github.head_ref }}

	# Scheduled / manual: check all three published repos against each other.
	# No divergence should exist on the default branches once a change is fully rolled out.
	parity-monitor:
	if: github.event_name != 'pull_request'
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
	- name: Check API parity (all three from GitHub)
	run: python3 scripts/check_api_parity.py --check --remote

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