Add separate 'Simulating' play mode with UI controls and manager support

[Krilliac]

Motivation

• Introduce a simulation mode that runs selected subsystems (physics/AI/etc.) while retaining the editor camera/workflow, so users can validate runtime behavior without fully entering game-camera play mode.
• Provide keyboard and toolbar controls to enter/exit/toggle simulation independently of normal play, and reflect simulation state consistently in UI and logs.

Description

• Add Simulating to PlayModeState and introduce onEnterSimulate / onExitSimulate callbacks in PlayModeCallbacks in PlayModeTypes.h.
• Extend PlayModeManager with EnterSimulationMode, ToggleSimulationMode, IsSimulating, and m_wasSimulatingBeforePause to preserve simulation-vs-play semantics across pauses and exits, and update console/status reporting.
• Update pause/resume/exit logic in PlayModeManager to correctly handle the Simulating state and invoke simulation callbacks where appropriate.
• Wire PlayModeManager into panels after initialization in EditorPanelFactory.cpp so dependent panels (e.g. PlayModeToolbar, DedicatedServer) receive the manager instance.
• Update editor UI and toolbar code (EditorUI.*, PlayModeToolbarPanel.*, EditorMenuBar.cpp) to visualize and handle the Simulating state, add an F6 hotkey for toggling simulation, call m_playModeManager.Update(deltaTime) during the editor update loop, and adjust notifications and button styling accordingly.

Testing

• Built the project and ran the automated unit test suite via ctest, which completed successfully.
• Ran the editor integration smoke tests (tests/editor_integration) to verify play/simulate toggle behavior and UI updates, which all passed.
• Verified logs and notifications show the new Simulating state transitions and callbacks during automated runs, with no failures observed.

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[github-actions]

Code Coverage (GCC + lcov)

Utils/MemoryMonitor.h                          |85.7%    14| 0.0%  12|    -    0
Utils/MultiISA.h                               |42.9%    14| 0.0%   6|    -    0
Utils/NetworkHealthMonitor.cpp                 | 113%    15| 0.0%   2|    -    0
Utils/NetworkHealthMonitor.h                   |    -     0|    -   0|    -    0
Utils/OpaqueHandle.h                           | 282%    11| 0.0%  15|    -    0
Utils/ProcessLinux.cpp                         |16.5%   182| 0.0%  28|    -    0
Utils/Profiler.cpp                             |14.2%   113| 0.0%  15|    -    0
Utils/Profiler.h                               |36.4%    33| 0.0%  12|    -    0
Utils/RandomEngine.h                           |29.3%    41| 0.0%  12|    -    0
Utils/Result.h                                 | 100%    29| 0.0%  28|    -    0
Utils/RingBuffer.h                             | 108%    59| 0.0%  64|    -    0
Utils/ScopeGuard.h                             | 142%    36| 0.0%  51|    -    0
Utils/ScopedTimer.h                            |25.0%    12| 0.0%   3|    -    0
Utils/Serializer.h                             | 100%    48| 0.0%  42|    -    0
Utils/SparkConsole.cpp                         |28.5%   144| 0.0%  17|    -    0
Utils/SparkConsole.h                           | 100%     2| 0.0%   2|    -    0
Utils/SparkError.h                             |10.9%    55| 0.0%   6|    -    0
Utils/SplinePath.h                             |    -     0|    -   0|    -    0
Utils/StackTrace.h                             |10.8%    74| 0.0%   8|    -    0
Utils/StateMachine.h                           |54.0%    63| 0.0%  32|    -    0
Utils/StringUtils.h                            |18.1%   116| 0.0%  21|    -    0
Utils/Telemetry.h                              |20.7%   135| 0.0%  22|    -    0
Utils/ThreadDebugger.h                         |11.6%   199| 0.0%  23|    -    0
Utils/ThreadSafeQueue.h                        |27.5%    40| 0.0%  11|    -    0
Utils/TimerManager.h                           |19.8%    96| 0.0%  19|    -    0
Utils/UUID.h                                   |43.2%    37| 0.0%  16|    -    0
Utils/Validate.h                               |    -     0|    -   0|    -    0

[/home/runner/work/SparkEngine/SparkEngine/SparkSDK/Include/Spark/]
IEngineContext.h                               |7300%     1| 0.0%   1|    -    0
ServiceInterfaces.h                            | 200%     3| 0.0%   3|    -    0
Version.h                                      |    -     0|    -   0|    -    0
================================================================================
                                         Total:|29.2% 23740| 0.0%  4k|    -    0

Per-Subsystem Coverage

Subsystem	Lines	Hit	Coverage	Threshold	Status
AI	2776	694	25%	35%	❌
Animation	160	154	96.2%	35%	✅
Audio	0	0	0%	30%	✅
Camera	0	0	0%	40%	✅
Core	2248	1394	62%	40%	✅
ECS	190	114	60%	40%	✅
Editor	6082	1864	30.6%	25%	✅
GameModules	6244	3137	50.2%	30%	✅
Graphics	7202	3794	52.7%	30%	✅
Networking	3379	2247	66.5%	35%	✅
Physics	0	0	0%	35%	✅
Scripting	0	0	0%	30%	✅
Utils	7687	4865	63.3%	60%	✅

Total: 50.8% (18263/35968 lines)

[github-actions]

❌ CI Error Report

Failed jobs: windows-vs2022-Release
Errors: 0 | Test failures: 3 | Warnings: 0

Test Failures

Test	Jobs
1/1 Test #1: SparkEngineTests .................***Failed 12.49 sec	windows-vs2022-Release
[ FAILED ] Integration_NetworkingECS_ReplicationLatencyJitterPredictionReconciliation (606us, 8 assertions)	windows-vs2022-Release
0% tests passed, 1 tests failed out of 1	windows-vs2022-Release

Updated: 2026-04-10T00:18:46Z — this comment is updated in-place, not duplicated.