v0.2.0

What's new

• Pydantic v2 models — KbInvoice, KbOrder, Position discriminated union, OrderRepetition: validate payloads at the CLI boundary with clear field-path errors before hitting the API
• invoices create --file — create an invoice from a JSON body file (or stdin with -)
• orders create --file — create an order from a JSON body file
• orders set-repetition — set or update recurrence on an order (flags or JSON file)
• HTML validation — models reject **Markdown bold** in text fields and suggest <strong> instead (Bexio renders HTML, not Markdown)
• docs/DEVELOPMENT.md — contributor guide: package structure, add-a-command walkthrough, API version map, model patterns, test helper reference

Breaking changes

None. pydantic>=2.5 added as a base dependency.