Add 'Fix Pattern' button to Regex Tester

[devin-ai-integration]

Add 'Fix Pattern' button to Regex Tester

Summary

Adds a "Fix Pattern" button to the Regex Tester utility that generates a regex pattern matching the test string by escaping special regex characters. When clicked, the button takes the current test string and creates a properly escaped regex pattern that will match it literally.

Changes:

• Added escapeRegexPattern utility function that escapes special regex characters (.*+?^${}()|[\]\\)
• Added "Fix Pattern" button below the Regex Pattern textarea (disabled when test string is empty)
• Added unit tests for the new escape function

Review & Testing Checklist for Human

• Verify the "Fix Pattern" behavior matches expectations - The button escapes the test string to create a literal match pattern. Confirm this is the intended behavior from the bug report (the Jam video mentioned wanting a button to "fix the regex pattern to match the test string")
• Test the button with special characters - Try test strings like hello.world, (test), a*b+c? and verify the generated pattern correctly matches
• Test the button is disabled when test string is empty - The button should be disabled until a test string is entered

Recommended test plan:

1. Go to /utilities/regex-tester
2. Enter a test string like hello.world
3. Click "Fix Pattern" - should populate pattern with hello\.world
4. Verify the result shows "Match found: 1 match"

Notes

• Link to Devin run: https://app.devin.ai/sessions/1aea2da339044c3f934568215320e5b0
• Requested by: dani@jam.dev (@danigrant)
• Related Jam: https://jam.dev/c/141c18ed-1585-4df5-9ce5-9a902cb66cf8

[devin-ai-integration]

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