IOTA Watch: a five-language read-only monitoring app built with TanStack Start

[molimao]

I maintain IOTA Watch, a free, MIT-licensed monitor for Macrocosmos IOTA Train at Home (Bittensor SN9), with separate xCoin XID / MMM and Quantus QTC views. IOTA here means the training project, not the IOTA Foundation chain.

The app uses TanStack Start, Router and Query with React 19. The useful part to share with this community is how the public learning pages and the live monitor coexist:

• Five language prefixes (/en, /zh, /zh-TW, /ko, /ja) go through a file route that validates the locale before rendering. Language switches retain the page path.
• Article routes validate optional slugs before rendering and supply page-specific head metadata, canonical URLs and language alternates. FAQ text and structured answers share content; server-rendered pages remain readable without a client translation request.
• Server functions read the allowed upstream APIs, validate responses and retain earlier valid data after a failure. Query-driven monitoring distinguishes an unknown value, a stale reading and a measured zero.

Source includes the routes, content generation, upstream readers and tests. FAQ shows the public content alongside the network monitor.

This is an application example, not a generic starter. The optional account features currently use Lovable OAuth and Supabase; independent deployments need their own configuration, as documented in the README.

I would appreciate feedback on the localized routing and public-page metadata, especially patterns you would simplify in a Start app.