Files

• manifest.json — MV3 manifest (permissions, content scripts, action).
• background.js — service worker; opens the hub on action click.
• hub.html — the hub page; the LINKS array drives the profile cards.
• record.js — content script that records a visit for the visited host.
• icons/ + make_icons.py — toolbar icons (and the generator).
• bg.jpg — hero background (dimmed city / coastline).

All data is stored in chrome.storage.local (this browser only) — no network calls, nothing leaves the browser.