Lets people on limited data stop the Tankopedia from downloading 3D models automatically.
- Added an Automatically load 3D models switch to the settings page, on by default
- When off, the tank page hero shows a Load 3D model button where the loading bar sits
- Held back every model download on the tank page until requested, including the dynamic armor switcher and the gun flexibility visualizer
- Wrapped the tank sandbox in its own suspense boundary so the loading bar shows real progress instead of the whole page waiting on the model
- Measured loading progress from when each loading bar appears so it always starts empty
- Added the English strings; other languages fall back until translated
Fixes#311
The mixer's hull/turret/gun row is about 440px wide at its fixed sizes and is centered with `left: 50%` and `translateX(-50%)`, so on phones narrower than that it overflowed past both edges.
Use smaller button sizes on phones and scale the tank images with the viewport (`clamp(2rem, 11vw, 4em)`), with smaller separators and gaps. From 520px up the layout is unchanged.
The "Help translate BlitzKit" link on the home page had only a bottom margin, so it sat flush against the hero above while the tool grid below added extra space.
Add a top margin so the space above matches the space below, leaving the bottom margin unchanged.
Both buttons in the testing and unlocked filter pairs started on, so showing only one kind meant turning the other kind off.
Start all four filters off, treat a pair with neither button on as showing everything, and make the buttons in each pair mutually exclusive: turning one on turns its partner off, and clicking an active one turns it off. The playlist page now sets the unlocked filter on (and locked off) explicitly, since the old default no longer provides that.
The /session/ page crashed when a tracked player's tank stats included
a tank with no matching tank definition or no average stats (WN8
baseline). The delta memo dereferenced `tank.id` on a possibly missing
definition and forced `average?.mu!` through as non-null, so a missing
average threw inside `compositeStats`/`calculateWN8` uncaught, breaking
the page on every load while the bad state persisted in localStorage.
Skip those entries instead of crashing: entries with no tank
definition or no average `mu` are dropped from the delta via
`flatMap`, so the rest of the session table still renders.