Update v0.9.0.8 — Save System Rewrite & Quit Dialog Fix

A small but important hotfix right after v0.9.0.7. Main point: local saving now works reliably — even offline, without a cloud connection.

## Fix: Local Saves

Since release, local saving had a silent bug: the internal database grew unbounded through action logs and eventually busted the local storage quota. Nobody noticed directly because the error was silent — until you quit and your save didn't come back.

Now: fully rewritten save system, JSON-only, ~15–30 KB per save (down from 2–5 MB). Parallel optional cloud save via Nakama if you're online — but local works just fine on its own.

## New: Legacy Save Migration

If you have a save from the old version, you don't need to do anything: on first launch it's automatically ported to the new format. The old slot is preserved for recovery if anything goes wrong.

## New: "Continue Game" Button on Start Menu

Instead of a generic load button you now see exactly who's there and in which round: "Your Name · R42". One click and you're back in the game.

## Fix: Quit Dialog Now Always Offers Save

Previously, players without a cloud connection only saw "Quit without saving" and "Cancel" in the quit dialog — because local saves were silently broken. Now every quit gives you a "💾 Save & Quit" button.

## Fix: Display Mode Switch No Longer Destroys Game State

Switching from "Windowed" to "Borderless" or "Exclusive" during a run used to wipe the game state (back to the start menu). The cause was window recreation — now the game blocks such switches during an active run and shows a hint instead.

## Under the Hood

• Save architecture: JSON snapshot instead of sql.js binary blob - Legacy loader: sql.js is now lazy-loaded only when needed