Add automated live HTTP success-path test

[mertsatilmaz]

Goal

Add an automated test that exercises the live HTTP adapter success path.

Why this matters

The harness now supports live HTTP execution, but most tests exercise trace-file mode or target trace-building logic directly. We should have a test that proves the actual live path works:

scenario -> HTTP adapter -> test server -> trace -> assertion evaluation -> result

[Jenjineer]

@mertsatilmaz I'd like to work on this, can you assign it to me? I have a draft test that spins up the example HTTP target on a free port and exercises the live HTTP adapter success path end to end. Will open a PR shortly.

[mertsatilmaz]

Done, thanks @Jenjineer