test(scheduler-sim-repl-verbosity): task 9.1 - RED tests for help/break discoverability

Adds failing tests for Requirement 7 (Discoverable Help and Breakpoint
Event Types): help's four labeled sections in correct order, one
consistent column width across every listed command, info config's
placement alongside its info siblings, set units's placement alongside
set speed/output/verify, the break line's complete BP_KIND_TABLE-derived
event-type listing, and break's own unrecognized-event-type error
listing the same complete set. Each new test hardcodes BP_KIND_TABLE's
current 12 tokens rather than referencing the not-yet-implemented
repl_bp_kind_names() accessor, so RED comes from genuine assertion
failures against today's behavior rather than a link error.

New tests for Requirements 7.1-7.4 land in a new test_repl_help.c
rather than test_repl_execution_control.c (949 lines going in, within
reach of this spec's own ~1000-line split trigger already flagged at
task 2.1) - proactive split per this spec's established practice,
documented in design.md. break's Requirement 7.5 error-message test
lands in test_repl_breakpoints_inspection.c exactly as originally
planned, alongside the pre-existing test_break_unrecognized_event_type_rejected
(left unmodified).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YAWMhfRJFnmmnG8h97yUDd

src/scheduler/testsuite/meson.build

@@ -1067,6 +1067,39 @@ sched_repl_resource_table_test = executable(
     dependencies: [scheduler_test_deps, libedit_dep],
     install: false)
 
+# Contract test for the interactive simulation REPL's Help & Breakpoint
+# Discoverability component (scheduler-sim-repl-verbosity spec, task 9.1,
+# Requirements 7.1-7.4): `help`'s listing groups commands into four labeled
+# sections in a fixed order, aligns every command's description to one
+# consistent column position throughout, lists `info config` together with
+# its `info` siblings in the state-inspection section, lists `set units`
+# alongside `set speed`/`set output`/`set verify` in the snapshot-and-
+# parameters section, and enumerates the complete BP_KIND_TABLE event-type
+# set on the `break` line. Same white-box #include pattern as
+# sched_repl_resource_table_test above (core.c, core_clock.c, core_events.c,
+# core_session.c, decision.c, plugin.c, plugins/builtin_fcfs.c, recording.c,
+# recording_session.c, sim.c, sim_loop.c, sim_record.c, sim_verify.c,
+# snapshot.c/snapshot_wire.c/snapshot_load.c, repl.c, repl_fmt.c,
+# repl_rollup.c, repl_break.c, repl_info.c, repl_params.c) even though this
+# file's own tests call only repl_print_help() directly -- no
+# xce_sched_sim_driver_t/replay fixture needed. Split into its own file
+# rather than appended to test_repl_execution_control.c -- that file was
+# already 949 lines (pre-existing, over this project's 800-line cap) before
+# this task began; landing this task's own section/column/discoverability
+# tests there would have pushed it well past the ~1000-line split trigger
+# this exact file family already established (the same reasoning that split
+# test_repl_round_rollup.c/test_repl_event_echo.c/test_repl_resource_table.c
+# out of their own siblings). `break`'s own unrecognized-event-type error
+# message test (Requirement 7.5) lives in
+# test_repl_breakpoints_inspection.c instead, per design.md's own file-
+# placement guidance for this component.
+sched_repl_help_test = executable(
+    'sched_repl_help_test',
+    ['test_repl_help.c'],
+    include_directories:[incdir],
+    dependencies: [scheduler_test_deps, libedit_dep],
+    install: false)
+
 # Contract test for the interactive simulation REPL's snapshot-capture and
 # simulation-parameter command slice (scheduler-core spec, task 12.3, Req 5
 # AC 22 "Snapshots"/"Simulation parameters"): `snapshot [FILE]` writes a
@@ -1542,6 +1575,9 @@ test('scheduler repl breakpoints inspection test',
 test('scheduler repl resource table test',
      sched_repl_resource_table_test, suite: 'scheduler',
      env: ['ASAN_OPTIONS=detect_leaks=0'])
+test('scheduler repl help test',
+     sched_repl_help_test, suite: 'scheduler',
+     env: ['ASAN_OPTIONS=detect_leaks=0'])
 test('scheduler repl snapshot params test',
      sched_repl_snapshot_params_test, suite: 'scheduler',
      env: ['ASAN_OPTIONS=detect_leaks=0'])