Q: GEM300 end-to-end conformance scenario harness

A single integration test that drives every top-level FSM through
the coordinated lifecycle a real fab acceptance test exercises:

  1.  EPT NonScheduledTime -> Standby -> Productive (E116)
  2.  E84 load handshake at LP1 (CS_0 -> VALID -> L_REQ -> BUSY -> COMPT)
  3.  LoadPort transfer Loading -> InService; Carrier created + associated
  4.  CIDS NotConfirmed -> Confirmed via host ProceedWithCarrier (E87)
  5.  Slot map populated + CSMS NotRead -> Read
  6.  Two substrates created from carrier slots 1 and 2
  7.  Per-substrate IDS NotConfirmed -> WaitingForHost -> Confirmed
  8.  PJ + CJ created (E40 + E94, with PPID validator + PJ-membership)
  9.  CJ Queued -> Selected -> WaitingForStart -> Executing (E94)
  10. PJ Queued -> SettingUp -> WaitingForStart -> Processing (E40)
  11. Each substrate Acquire -> StartProcessing -> EndProcessing -> Release
  12. Module StartGeneral -> StartStep -> CompleteStep (E157)
  13. PJ ProcessComplete; CJ AllJobsComplete -> Completed
  14. Substrate locations AtDestination + processing Processed
  15. E84 unload handshake (CS_0 -> VALID -> U_REQ -> BUSY -> COMPT)
  16. LoadPort Unloading -> InService; disassociate
  17. EPT Productive -> Standby

Total: 278 test cases, 1436 assertions — all green.  Any regression
in a single FSM that breaks cross-FSM coordination surfaces here.

Closes the J-Q tranche set.  Repository now exercises the full
GEM300 stack from physical I/O (E84) through SECS-II messaging (E5),
the equipment model (E30/E120), job management (E40/E94), substrate
tracking (E90), carrier/port management (E87), performance tracking
(E116), and module process tracking (E157).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

CMakeLists.txt

@@ -115,6 +115,7 @@ add_executable(secsgem_tests
   tests/test_sml.cpp
   tests/test_s9_fallback.cpp
   tests/test_e84.cpp
+  tests/test_gem300_scenario.cpp
 )
 target_link_libraries(secsgem_tests PRIVATE secsgem doctest::doctest)
 target_compile_definitions(secsgem_tests PRIVATE