Emit TAP or JUnit output

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assert_conformance/3 raises on failure, so it only returns a successful result. To report both pass and fail, call evaluate/3 directly:

events = Pm4ExUnit.Session.get_events(session)
result = Pm4ExUnit.Conformance.evaluate(events, [[:step_a, :step_b]])

tap = Pm4ExUnit.Reporter.format_tap("order saga", result.success, result.violations, result.diagnostics)
xml = Pm4ExUnit.Reporter.format_junit("order saga", result.success, result.violations, result.diagnostics, 0.02)

The fifth argument to format_junit is the duration in seconds (default 0.001). diagnostics is accepted but not written to the XML.

TAP output is TAP version 13, 1..1, ok 1 - name (or not ok), then an indented --- YAML block listing violations, then .... JUnit output is a <testsuites> / <testsuite> / <testcase> tree; a failure adds a <failure message="..."> node.

Both return strings; write them wherever your CI reads reports.