feat: add regex filter support

[librajt]

add regex filter support

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Summary by cubic

Add regex support to text filters for messages and connections using the /pattern/flags format, with a safe fallback to case-insensitive substring matching. This makes filtering more flexible while preserving existing behavior.

• New Features
  • Supports /pattern/flags regex in filterMessages and filterConnections (matches against message data, connection URL, and ID).
  • Defaults to case-insensitive ("i") when no flags are provided; invalid regex falls back to substring matching.
  • Invert filtering continues to work with regex matches.

^{Written for commit ae47261. Summary will update on new commits.}

[cubic-dev-ai]

1 issue found across 1 file

Prompt for AI agents (all issues)

Check if these issues are valid — if so, understand the root cause of each and fix them.


<file name="src/utils/filterUtils.js">

<violation number="1" location="src/utils/filterUtils.js:82">
P1: Stateful regex bug: If user provides a regex with the global flag (e.g., `/pattern/g`), the `lastIndex` state persists across `.test()` calls, causing incorrect filtering. Consider stripping the `g` flag in `parseRegexFromFilter` since it's not needed for filter matching, or reset `regex.lastIndex = 0` before each test.</violation>
</file>

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