[linear-code]

Local evaluation matched REGEX segment conditions anywhere in the trait value, so prod matched nonproduction. According to the documented behaviour, patterns must match from the start of the value but don't need to cover all of it. This PR makes Ruby follow that rule, matching the other SDKs.

Changes

• Regex conditions match from the start of the trait value, including every alternative in patterns like prod|dev.
• Patterns still don't need to match the whole value. ^…$ still forces a full match.

Closes https://linear.app/flagsmith/issue/SDK-26/standardise-regex-matching-in-the-ruby-server-side-sdk

Review effort: 1/5

[linear-code]

SDK-26

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[linear-code]

@coderabbitai review

[codspeed]

Merging this PR will not alter performance

✅ 15 untouched benchmarks

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_{Comparing linear/sdk-26-standardise-regex-matching-in-the-ruby-server-side-sdk-dc21 (00ef187) with main (e4efc8f)}