Local desktop version

Create a local desktop version of FreeBudget. Feature purposes:

• The user's data is stored only on their own device, for maximum security. (Syncing optional)

• Exposure of database (as SQL or files) enables advanced scripting, editing, and integration with other workflows.

Possible technical challenges:

• If database backend is tabular, separating out a single user.

• Making API endpoints for backend services (such as Stripe).

• Implementing updates (optional but convenient).

Related ticket(s):

• https://freebudget.featurebase.app/p/installable-app-experience