fix: correct regex anchor

[cx-miguel-neiva]

Closes #307

Proposed Changes

• Fixes an issue where regex patterns ending with $ stopped matching end-of-line in multi-line files, which affected detection of secrets stored on a single line (e.g., in files named PASSWORD or SECRET).
• Ensures that newline indices are correctly calculated using
  regexp.MustCompile("\n|$").FindAllStringIndex(fragment.Raw, -1),
  so that $ in regex rules continues to match end-of-line as expected.
• Maintains compatibility with existing detection rules that rely on $ for line endings.
• Note: To implement this fix, it was necessary to pull the detect logic into our own codebase, allowing us to adjust and maintain the detection behavior as required.

Checklist

• I covered my changes with tests.
• I updated the documentation that is affected by my changes:
  • Change in the CLI arguments
  • Change in the configuration file
• I submit this contribution under the Apache-2.0 license.

[github-actions]

KICS version: v1.7.13

Category Results HIGH 0 MEDIUM 0 LOW 0 INFO 0 TRACE 0 TOTAL 0	Metric Values Files scanned 13 Files parsed 13 Files failed to scan 0 Total executed queries 53 Queries failed to execute 0 Execution time 1

[github-actions]

Checkmarx One – Scan Summary & Details – 1cb123cb-cdd2-476f-b7f8-501ac7275081

Great job! No new security vulnerabilities introduced in this pull request

[cx-rogerio-dalot]

Can we try to slim down the code that we are importing and do our specific logic after detection or before detection on our wrapper?

[cx-rogerio-dalot]

I think this should be a wrapper, hold a pointer to the gileaks detector and leave the most of it to the gitleaks detector. Only pull something to here if absolutely necessary.

[cx-rogerio-dalot]

The same for the other structs.

[cx-rogerio-dalot]

can we avoid this? The tests will run on linux always on CI/CD and locally its nice if you develop making sure that the tests will pass on CI/CD. To fix this for your side, you should just run the tests on WSL.

[cx-rogerio-dalot]

I think you have some ids repeated (they changed IDs between commits but they refer to the same secret). Can you completely clean your changes in this file and run 2ms so you can add them in one go to avoid cluttering the file unecessarily.