feat(mlwm): add neural watermark scaffold #9

	name: test all

	on: [push, pull_request]

	permissions:
	contents: read

	jobs:
	build:
	runs-on: ubuntu-latest
	name: Test robust watermark engine
	defaults:
	run:
	working-directory: blind_watermark
	steps:
	- uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5
	- uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065
	with:
	python-version: '3.10'
	- name: Install dependencies
	run: \|
	pip install -r requirements.txt
	- name: Smoke test — import and roundtrip
	shell: python {0}
	env:
	PYTHONPATH: .
	run: \|
	from rwm_engine import embed_watermark, extract_watermark, check_dependencies
	import numpy as np
	dep = check_dependencies()
	assert dep['ok'], f'Missing deps: {dep}'
	img = np.random.randint(0, 256, (800, 800, 3), dtype=np.uint8)
	wm = embed_watermark(img, 'hello world', password=42, quality='balanced')
	extracted = extract_watermark(wm, password=42, quality='balanced')
	assert extracted == 'hello world', f'Roundtrip failed: {extracted}'
	print('All tests passed.')

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