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

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

@@ -1,15 +1,15 @@
+import { loadPlaywright, launchChromium } from '../../scripts/orgchart-browser-runtime.mjs';
 import { readFile, writeFile, mkdir } from 'node:fs/promises';
-import { pathToFileURL } from 'node:url';
 import { createHash } from 'node:crypto';
 
 // Only the eight final card requirements; existing 368-check evidence is untouched.
-const { chromium } = await import(pathToFileURL(process.env.ORGCHART_PLAYWRIGHT_MODULE).href);
+await loadPlaywright();
 const output = 'test-results/org-chart-final-check';
 await mkdir(output, { recursive: true });
 const fixture = JSON.parse(await readFile('examples/org-chart/data-p1.json', 'utf8'));
 const results = [], measurements = [], errors = [];
 const check = (ok, name, actual) => results.push({ name, status: ok ? 'PASS' : 'FAIL', actual });
-const browser = await chromium.launch({ executablePath: 'C:/Program Files/Google/Chrome/Application/chrome.exe', headless: true });
+const browser = await launchChromium({ headless: true });
 const origin = process.env.ORGCHART_STORY_ORIGIN ?? 'http://127.0.0.1:6031';
 const collisionRepair = process.argv.includes('--collision-repair');
 async function capture(story, scenario, data) {