🔒 Fix Insufficient Data Masking (Data Exposure) in helpers.ts

[google-labs-jules]

🎯 What: Improved the regular expressions used in src/helpers.ts (CC_REGEX and SSN_REGEX) for masking sensitive data.
⚠️ Risk: The previous regexes were too strict (e.g., CCs required exactly 16 digits split by dashes/spaces in groups of four). This could lead to data exposure where unbroken strings of digits or cards with different lengths (like 15-digit Amex) were not redacted when logged or displayed.
🛡️ Solution: Updated CC_REGEX to /\b(?:\d[ -]*?){13,16}\b/g and SSN_REGEX to /\b\d{3}[-\s]?\d{2}[-\s]?\d{4}\b/g to catch various formats of credit card numbers and SSNs safely, without excessive backtracking. Reordered regex execution in maskSensitiveData to match Credit Cards before Phone numbers, preventing partial matches from exposing remaining digits. Added unit tests to verify behavior and prevent regressions.

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PR created automatically by Jules for task 10008601063142684167 started by @zknpr

[google-labs-jules]

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Project	Deployment	Actions	Updated (UTC)
sq-lite-explorer	Ready	Preview, Comment	Jun 8, 2026 4:37pm