#!/usr/bin/env python3
"""Source-only mobile/observed-backend UI invariants, no browser required."""
from pathlib import Path
root=Path(__file__).resolve().parents[2]
css=(root/'src/admin/web/style.css').read_text()
preferences=(root/'src/admin/web/app/preferences.js').read_text()
masonry=(root/'src/admin/web/app/overview-masonry.js').read_text()
html=(root/'src/admin/web/index.html').read_text()
render=(root/'src/admin/web/vhosts/render.js').read_text()
client=(root/'src/upstream/client.rs').read_text()
pool=(root/'src/balance/pool_view.rs').read_text()
assert 'touch-action: pan-y pinch-zoom' in css
assert 'overflow-anchor: none' in css
assert 'grid-template-columns: repeat(2, minmax(0, 1fr))' in css
assert '@container overview-canvas (max-width: 700px)' in css
assert 'overview-canvas (max-width: 440px)' not in css
assert '.vhost-backend-protocol-badge' in css
assert '.vhost-card' in css[css.index('/* Global shape preference.'):]
assert '.draft-dock,' not in css[css.index('/* Global shape preference.'):]
assert 'grid.append(...orderedNodes)' in preferences
assert 'orderedNodes.some((node, index) => node !== currentNodes[index])' in preferences
assert 'if (ordered.some((node, i) => node !== previous[i])) grid.append(...ordered);' in masonry
assert html.count('data-dashboard-widget=') >= 62
assert 'function renderUpstreamProtocolBadges(status)' in render
assert 'const VHOST_PROTOCOL_FRESH_MS = 5 * 60 * 1000' in render
assert 'self.inner.observe_protocol(value.version())' in client
assert '"upstream_protocol_observed"' in pool
print('PASS: mobile grid, shape, stable reorder and observed backend protocol source contracts')