fix(org-chart): improve auto connector contrast and test portability

examples/org-chart/verify-final-logo-check.mjs

@@ -1,10 +1,10 @@
+import { loadPlaywright, launchChromium } from '../../scripts/orgchart-browser-runtime.mjs';
 import { readFile, writeFile } from 'node:fs/promises';
-import { pathToFileURL } from 'node:url';
-const { chromium } = await import(pathToFileURL(process.env.ORGCHART_PLAYWRIGHT_MODULE).href);
+await loadPlaywright();
 const output = 'test-results/org-chart-final-check';
 const baselineMode = process.argv.includes('--baseline');
 const repairMode = process.argv.includes('--geometry-repair');
-const browser = await chromium.launch({ executablePath: 'C:/Program Files/Google/Chrome/Application/chrome.exe', headless: true });
+const browser = await launchChromium({ headless: true });
 const measurements = [], results = [], errors = [];
 const check = (ok, name, actual) => results.push({ name, status: ok ? 'PASS' : 'FAIL', actual });
 const previous = baselineMode ? [] : JSON.parse(await readFile(`${output}/logo-before.json`, 'utf8'));