fix: guard tauri runtime and non-git folders

[matiaspalmac]

Changes

Fixes tres crashes/noise que aparecen cuando el bundle corre fuera del runtime de Tauri y cuando se abre una carpeta que no es repo git:

• apps/desktop/src/api/store.ts: agrego guarda con isTauri() y fallback a localStorage para get/set/delete. Antes caía con Cannot read properties of undefined (reading 'invoke') al inicializar el store fuera del contexto de Tauri.
• apps/desktop/src/components/OnboardingWizard.tsx: paso el import de @tauri-apps/api/window a dinámico y lo gatillo con isTauri(), replicando el patrón de TitleBar.tsx. Los botones de ventana (minimize/maximize/close) solo se renderizan cuando está corriendo nativo.
• apps/desktop/src/addons/builtin.git-explorer/GitExplorerComponent.tsx: llamo a get_git_status con { silent: true }, trato "not a git repository" y "must be run in a work tree" como estados esperados, y reseteo stagedChanges/gitChanges/branches/currentBranch cuando no es repo (antes quedaba data stale al cambiar de carpeta). Se preserva el flujo existente de dubious ownership.

Issues

• fix [Bug]: Crash when opening the app in a browser while Tauri runtime is not ready #18
• fix [Bug]: Git explorer logs errors every 5s when the opened folder is not a git repo #19

[Copilot]

Pull request overview

This PR prevents crashes and repeated console noise when the desktop UI is executed outside the Tauri runtime (e.g., in a browser during dev) and when the Git Explorer is pointed at a non-git folder.

Changes:

• Added isTauri() guards and a localStorage fallback for trixtyStore to avoid plugin-store initialization crashes outside Tauri.
• Switched OnboardingWizard window APIs to dynamic imports gated by isTauri() and only render native window controls when running in a native window.
• Made Git status polling quiet for “not a git repository”/“work tree” errors and ensured git UI state is reset when leaving a repo.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
apps/desktop/src/components/OnboardingWizard.tsx	Guard Tauri window APIs via isTauri() + dynamic import; hide native window buttons outside Tauri
apps/desktop/src/api/store.ts	Add isTauri() guard and localStorage fallback for get/set/delete to avoid browser crashes
apps/desktop/src/addons/builtin.git-explorer/GitExplorerComponent.tsx	Silence expected git-status errors for non-repos and clear stale git UI state

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[jmaxdev]

done