Implement single-account frequency computation and consistency tests

[gelluisaac]

Implement single-account computation function and consistency tests

• Implement compute_account_frequency function:
  • Comprehensive docstring with Args, Returns, Notes, Examples
  • Type hints for all parameters and return value
  • Filter DataFrame to specified account
  • Raise ValueError if account not found
  • Compute metrics using batch logic
  • Return dictionary with keys: mean_tx_per_day, std_tx_per_day, burstiness
• Write unit and property tests:
  • Valid/invalid account ID
  • Single-day transactions
  • Custom column names
  • Batch and single-account consistency
• Requirements: 5.4, 5.5, 6.1...6.3

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[bamiebot-maker]

@bamiebot-maker has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

hi can i get on with this?

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[Olowodarey]

@Olowodarey has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hello, I’m Darey Olowo, a frontend and smart contract developer with experience building and shipping reliable features. I’d like to take on this issue and deliver a solid solution within 2 hours.

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[anonfedora]

@anonfedora has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

I'm interested in this

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[soomtochukwu]

@soomtochukwu has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hey, let me take this off your plate quickly :]

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