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Walkthrough - Empty Database Support

I have implemented the ability to start with an empty database or initialize missing tables in an existing database.

Changes

src

constants.js

  • Added INITIAL_SCHEMA constant containing the SQL definitions for bregunice, naturalist, and shumske tables.

App.jsx

  • Added initializeDatabase function to:
    • Execute INITIAL_SCHEMA to create main tables if they don't exist.
    • Create app_import_history and app_config tables.
    • Initialize default mappings.
  • Updated handleFileUpload to use initializeDatabase.
  • Added handleCreateEmptyDb to create a new in-memory database and initialize it.
  • Added "Započni sa Praznom Bazom" button to the landing screen.

Verification Results

Automated Tests

  • None (this is a UI/Logic change).

Manual Verification

  1. Start with Empty Database:
    • Open the app.
    • Click "Započni sa Praznom Bazom".
    • Verify that the dashboard loads.
    • Go to "Baza" tab and check that shumske, bregunice, naturalist tables exist.
  2. Load Existing Database:
    • Load a database file.
    • Verify that if tables were missing, they are now created.