good first issue: Add realistic example dataset in Excel format

[ReginaldErzoah]

Description

Add a realistic dataset in Excel format to the examples/ folder. This will help users test Aniwa's Excel reading capabilities.

File Location

examples/filename.csv

Requirements

• Format: Excel (.xlsx)
• Rows: Minimum 100 rows
• Columns: 8-15 columns
• Data: Realistic or real-world data (not random/gibberish)

Data Characteristics

Include realistic data patterns:

• Some null/missing values
• Mixed data types (strings, numbers, dates)
• Duplicate entries (optional)

Testing

aniwa profile examples/filename.xlsx

Note: 'filename' is a placeholder for your real file's name

Acceptance Criteria

• File created at examples/filename.xlsx
• Minimum 100 rows of data
• Valid CSV format (properly escaped, consistent delimiters)
• Loads without errors in Aniwa

[Stancy-ai]

i'm taking up this issue

[ReginaldErzoah]

Sure Stancy