[P1] Audit: Regex Tester reset and sample behavior is inconsistent

[baixiangcpp]

Imported from the byteflow.tools deep audit on 2026-06-22.

Problem: Regex Tester has sample content and a Clear All action, but reset/sample behavior is not consistent with other tools. After clearing, users may lose the default example and need to recreate a working pattern manually.

Affected URL:

• https://byteflow.tools/en/regex-tester

Reproduction steps:

1. Open Regex Tester.
2. Observe the default pattern and test string.
3. Modify both fields.
4. Click Clear All.
5. Look for a way to restore the default sample quickly.
6. Compare behavior with tools that have Sample and Reset buttons.

Expected behavior: Clear should clear user data, while Reset/Sample should restore a useful default example. The semantics should match other tools.

Actual behavior: the available reset behavior is not clear enough and can leave the workspace empty.

Impact: users testing regex patterns lose a working reference example and may abandon the tool.

Proposed fix:

• Separate Clear All and Reset Sample actions.
• Add a Sample button that restores pattern, flags, and test string.
• Add default negative/positive fixtures.
• Preserve user changes only if local history is explicitly enabled in the future.
• Update action naming across text tools.

Acceptance criteria:

• Clear All clears fields intentionally.
• Sample restores default regex, flags, and test string.
• Button behavior is documented in tooltips or labels.
• Regex results update correctly after reset.
• Behavior matches the global action naming standard.

[baixiangcpp]

Closed as completed by the canonical BF audit backlog work. This older non-BF audit issue duplicates work now merged through PRs #209-#219, with the BF issues closed and guard/test coverage in place. The remaining non-duplicate follow-up is #7, which stays open because the upstream Next/PostCSS advisory is not fixed yet.

[baixiangcpp]

Reopened after closure audit. This is an older audit duplicate of the still-open BF-016 semantics work. Regex Tester reset/sample behavior should stay open until the shared Sample/Reset/Clear acceptance and regression coverage are completed.