feat(scheduler-sim-decision-trace): capture the trace-off REPL transcript baseline

Task 1.1: scripted REPL session over a contention replay (license, cluster
and host limits, parallel and alternative jobs); transcript, recordings and
--sim-verify result committed as fixtures and compared byte for byte.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

src/scheduler/testsuite/meson.build

@@ -2474,3 +2474,38 @@ test('scheduler sim discrete clock test',
      sched_sim_discrete_clock_test, suite: 'scheduler',
      env: ['ASAN_OPTIONS=detect_leaks=0'],
      depends: scheduler)
+
+# scheduler-sim-decision-trace spec, task 1.1 (Req 10.4, 10.5): the
+# trace-off REPL transcript baseline. Runs the built xce_scheduler
+# (XCE_SCHEDULER_BIN; `depends: scheduler` builds it first) in interactive
+# simulation mode on the committed resource-contention replay under
+# fixtures/repl_trace_baseline/ with a scripted session, and compares the
+# console transcript, the --sim-output and `set output` recordings and the
+# --sim-verify result with the committed baseline (wall-clock metadata
+# excluded). The replay writer links the real scheduler_srcs, same
+# technique as sched_sim_e2e_limit_visibility_test. Set
+# XCE_REPL_BASELINE_REGEN=1 to regenerate the fixtures (see the file's
+# header comment).
+sched_repl_trace_baseline_test_srcs = ['test_repl_trace_baseline.c']
+foreach f : scheduler_srcs
+  if f != 'src/main.c'
+    sched_repl_trace_baseline_test_srcs += ['../' + f]
+  endif
+endforeach
+
+sched_repl_trace_baseline_test = executable(
+    'sched_repl_trace_baseline_test',
+    sched_repl_trace_baseline_test_srcs,
+    include_directories:[incdir],
+    dependencies: [scheduler_test_deps],
+    c_args: ['-DXCE_SCHEDULER_BIN="' + scheduler.full_path() + '"',
+             '-DXCE_BASELINE_DIR="'
+             + (meson.current_source_dir() / 'fixtures'
+                / 'repl_trace_baseline')
+             + '"'],
+    install: false)
+
+test('scheduler repl trace baseline test',
+     sched_repl_trace_baseline_test, suite: 'scheduler',
+     env: ['ASAN_OPTIONS=detect_leaks=0'],
+     depends: scheduler)