AIGRA 0.2.0

User-facing change

• aigra_generate_items() now uses a data-frame-only interface. Users should load CSV or XLSX templates into R first and pass the resulting data frame through data = ....

• Added aigra_read_template() to read AIGRA CSV and XLSX templates into R.

• Added aigra_generate_from_data() as an alias for data-frame generation.

• Added internal UTF-8 temporary CSV handling before calling the Python backend. This reduces common encoding problems for non-English item banks.

• Added validation for required AIGRA tabular columns before backend execution.

Breaking change

• The direct file_path argument has been removed from aigra_generate_items(). Use aigra_read_template() first, then call aigra_generate_items(data = ...).

AIGRA 0.1.2

• Added aigra_generate_items() as a simplified generation wrapper around aigra_generate_tabular_items().
• Added direct API-key arguments: gemini.API, openai.API, groq.API, and anthropic.API.
• Added aigra_set_api_keys() so provider keys can be supplied directly from R.
• Added aigra_backend_help() to provide clearer guidance for configuring the external AIGRA_BACKEND folder.
• Improved first-time user guidance for backend configuration and API-key handling.
• Fixed documentation and namespace issues related to the new user-facing functions.

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