refactor: remove memory history and use browser history

[samuv]

MemoryHistorydoesn’t provide popStateEvent or pushStateEvent. This is blocking me to put useBlocker
We also lose browser-native behaviors (e.g., preserving the current page on reload).

There’s no clear technical justification for memory history in our case, we only can redirect to group default on index that should only happen on startup

Also Adds defaultViewTransition: true to enable view transitions by default

[Copilot]

Pull Request Overview

This PR refactors the router initialization to move away from createMemoryHistory and instead handles initial navigation through a route subscription. The router now uses browser history by default and redirects to /group/default when the root path is accessed on initial load.

Key changes:

• Removes createMemoryHistory from imports and router configuration
• Adds defaultViewTransition: true to enable view transitions
• Implements a redirect mechanism using router.subscribe('onLoad') to handle root path navigation

Comments suppressed due to low confidence (1)

renderer/src/renderer.tsx:101

• Analytics tracking will not be called for the initial redirect to /group/default because the function returns early at line 93. This means the first page view after the redirect won't be tracked. Consider calling trackPageView before the early return or restructuring the logic to ensure all navigations are tracked.

  trackPageView(data.toLocation.pathname, {
    'route.from': data.fromLocation?.pathname ?? '/',
    'route.pathname': data.toLocation.pathname,
    'route.search': JSON.stringify(data.toLocation.search),
    'route.hash': data.toLocation.hash,
  })