Shared links didn't unfurl in Messenger: robots.txt disallowed /watch/ for ALL
user-agents, so facebookexternalhit honoured it and got a blocked (403) fetch —
the OG tags were correct but never read. Add an allow group for the link-preview
bots (facebookexternalhit, Twitterbot, Discordbot, WhatsApp, Slack, Telegram,
LinkedIn, …) so they can fetch share pages; the wildcard still keeps /watch/ out
of search indexes. Release v0.32.1.
The public landing had no meta description and no robots.txt (the SPA fallback
returned index.html for /robots.txt, so crawlers saw an invalid file). Add a
description + basic OG tags to index.html and a real robots.txt that allows the
landing but disallows the API/auth/watch surfaces. Lighthouse (dev): SEO 83->100.
Session-close cosmetics:
1. Favicon — an 'S' monogram (indigo→violet rounded square, path-drawn so it's font-independent)
at public/favicon.svg, linked in index.html (tab had none before).
2. Dynamic document.title — reflects the current module ('Downloads · Siftlode'); Feed = brand
only; an open channel page shows the channel name. Shared pageTitleKey() in lib/pageMeta.ts
keeps the tab title and the top-bar header in lockstep.
3. The 'Siftlode' logo already navigated to Feed but read as static text — added a hover
background + cursor affordance so it's clearly clickable.
4. Module header — new shared PageTitle component (used by every non-feed module via Header) with
a tracked small-caps 'eyebrow' + leading accent dot (user-picked style B), styled in one place.
Verified in a real browser: favicon served (image/svg+xml), title updates per module, logo→feed,
header restyled; no console errors.
peter