What:

Filter browser-generated metadata headers out of proxy-recorded contracts and stubs so recordings are portable across browsers.

Why:

Proxy recordings made from Chromium-based browsers could capture browser-specific request metadata such as Sec-CH-UA*. Those headers were then recorded as mandatory headers, which caused replay failures when the generated mock was used from a different browser such as Safari.

How:

• Extend request transport-header filtering to exclude browser metadata by prefix for Sec-CH-* and Sec-Fetch-* headers.
• Add Save-Data and Priority to the request transport-header exclusion set.
• Restore common excluded transport headers for both request and response filtering so shared transport headers like Transfer-Encoding are filtered consistently.
• Add regression coverage for request cleanup and proxy-recorded artifacts.

Checklist:

• Unit Tests
• Build passing locally
• Sonar Quality Gate
• Security scans don't report any vulnerabilities
• Documentation added/updated (share link) N/A
• Sample Project added/updated (share link) N/A
• Demo video (share link) N/A
• Article on Website (share link) N/A
• Roadmpap updated (share link) N/A
• Conference Talk (share link) N/A

Validated locally with:

• ./gradlew :specmatic-core:test --tests "io.specmatic.core.HttpRequestTest"
• ./gradlew :specmatic-core:test --tests "io.specmatic.core.HttpResponseTest"
• ./gradlew :specmatic-core:test --tests "io.specmatic.proxy.ProxyTest"

Issue ID:
Closes: N/A