docs: lead with the FxBlox web app, mark the mobile apps as being discontinued

[ehsan6sha]

The FxBlox app now runs in the browser at https://docs.fx.land/fxblox-web/, and the Android/iOS apps are being discontinued. Every setup path in these docs still told users to install a phone app.

What changed

functionyard/fxblox-app.md — full rewrite. Web-app-first walkthrough that mirrors the real screens: welcome, browser check, set identity, connect (Bluetooth / LAN address / the Blox's own hotspot), set authorizer + Format Disk, choose the Blox's Wi-Fi, reconnect, done. Four new screenshots. Also adds:

• Already set up from the phone? — same password + same wallet gives the same identity, so no re-pairing is needed.
• Add Multiple FxBloxes rewritten around the multi-select "Add selected" screen; the old log-out-and-re-add loop is gone.
• A clearly-labelled Legacy mobile apps section that keeps both store links with a "being discontinued" notice.

mainnet-transition/ — content is now platform-neutral, but every file path and every front-matter id: is unchanged, so no URL moves and links posted in Telegram/Discord keep working. android-connected / android-disconnected now split on Blox state rather than phone OS. ios.md becomes a genuinely different page.

iOS is stated honestly. The web app cannot run on an iPhone or iPad — every iOS browser uses WebKit, which has no Web Bluetooth and no local-network access. The docs give the desktop-Chrome/Edge answer first and keep the legacy App Store link with the discontinuation note.

Also:announcementBar + a "Web App" navbar item + a sidebar link; disconnected-blox.md swaps "reinstall from your app store" for Clear app storage and points Bluetooth recovery at the web app's Settings → Bluetooth; smaller fixes in getting-started-testnet, fxblox-hardware-rpi, switch-chain, add-storage. Stale version claims (1.6.14 / 1.6.7) corrected to 2.0.1+.

Deliberately not touched

FxFotos and FxFiles store links (dapps.md, fxfotos.md, release/testnet-alpha.md) and the App Store link to The Unarchiver in fxblox-hardware-rpi.md.

Verification

• Local docusaurus build passes with onBrokenLinks: "throw".
• The build does not check anchors, so the two inbound anchor targets were preserved and confirmed present in the built HTML: #add-multiple-fxbloxes (from join.md) and #format-drive (from fxblox-hardware-rk1.md). The page's own broken #add-multiple-fxbloxs self-link is fixed.
• All four screenshots resolve and are copied into the build.
• The one remaining MDX warning (Component Note was not imported) is pre-existing, from pinning-service/ipfs-pinning-service-api.md.

Note for later

announcementBar in docusaurus.config.js is one block to delete once the migration is over.

🤖 Generated with Claude Code

https://claude.ai/code/session_01YJyqpFReP1wbz86nsqsoXq