Fix #2682: Align wallet audit header across 90 CSV files

[Larslllllll]

Summary

Header-only implementation of approved DBIP #2682 against the current main branch.

Changes

• Rename the wallet column audit to auditsPerformed.
• Apply the rename to the canonical wallet offers file and all wallet listings: 90 CSV files total.
• Keep schema and metadata changes in the paired json-tools PR fix(schema): align wallet audit field (#2682) #3595.

Data-integrity checks

• Exactly 90 CSV files changed; every file has one added and one removed header line.
• SHA-256 hashes of every file body after the header match upstream/main exactly.
• No CSV value or row changed.
• No unrelated DBIP commit or tools/ file is included.
• git diff --check passes.

Validation

The complete first-party pipeline passes against schema PR #3595:

• validate_csv.py
• csv_to_json.py
• validate.py

Existing warnings for legacy networks without populated chain values are unchanged and unrelated.

Dependency

Merge the paired schema/metadata prerequisite #3595 before this data PR.

Fixes #2682.

Reward address (Ethereum Mainnet USDC/USDT): 0x06f44f4839fd5df4f4670036d028b29dec939363