The static <title>ARRFLIX</title> patch wasn't enough - Jellyfin's bundle
calls document.title=... on hydrate and per-route, so the tab kept showing
'Jellyfin'. Add a self-contained inline IIFE in <head> that:
- Replaces 'Jellyfin' with 'ARRFLIX' on the title (incl. ' - Jellyfin' suffix)
- Pins favicon hrefs to the existing data: URL already in the page
- Watches <head> via MutationObserver for SPA churn
- Has a 1s setInterval safety net for late-binding navigations
- One-shot unregisters the Jellyfin service worker so old clients reload fresh
bin/inject-shim.py is the source of truth - idempotent (replaces marker block).
docs/10-spa-runtime-shim.md covers root cause, deploy flow, SW eviction, and
how to extend the shim on Jellyfin upgrade.
