Release v0.2.0 adding multi-language support

What's new

• Multi-language UI (English / Deutsch): Switch the interface language from any screen using the language selector. Labels across the toolbar, file summary, validation
panel, booking table, startup, error, and drag-and-drop views update immediately.
• Locale-aware totals: Monetary totals use locale-appropriate number formatting (e.g. 1,234.56 in English, 1.234,56 in German).
• Language preference is remembered between app restarts.

Fixes & improvements

• Added a Close File button to the toolbar for quicker workflow.
• Improved macOS dev/build reliability via the Tauri wrapper script.
• Updated About dialog with author and copyright information.

Note: Native macOS menus, window title, and backend validation/error messages remain in English by design.

Release v0.1.0 of Teki DATEV Viewer

Features

• Drag & drop — open a file by dropping it anywhere on the window
• File summary — encoding, line endings, file size, and record count at a glance
• Header metadata — all parsed DATEV EXTF header fields displayed as key/value pairs
• Booking table — virtualised, scrollable table with:
• sortable and resizable columns
• instant full-text search and filtering
• row and cell selection with clipboard copy (Ctrl+C / ⌘C)
• Validation — structural validation of header and every booking record, with severity indicators (Valid / Warning / Invalid)
• Totals — booking count, total amount, debit total, credit total, warning count, error count
• Error screen — detailed diagnostics for files that cannot be parsed, including the offending line
• Completely offline — no network access, no telemetry, no account required