Add simulation menu with speed control

[Copilot]

Adds a "Simulation" menu to the MenuBar (positioned between File and Help) and wires it into the existing simulation infrastructure.

Changes Made

MenuBar (MenuBar.kt)

• "Start..." action: shows a file chooser dialog, loads the selected XML as a SimulationContext via SimulationContextFactory, then calls Frame.setContext() + Frame.startSimulation()
• "Stop" action: terminates the running simulation cleanly via Frame.stopSimulation()
• Separator between Start/Stop and the Speed submenu
• "Speed" submenu with 5 presets (0.1x, 0.5x, 1x, 2x, 10x) and keyboard accelerators (keys 1–5) that call SimulationController.setSpeed()
• Updated "Usage" help dialog to document simulation keyboard shortcuts

SimulationController (SimulationController.kt)

• Added setSpeed(multiplier: Double) method with input validation; stores the desired speed and applies it immediately to the current runner (if any) and to each new runner on start()

MenuBarTest (MenuBarTest.kt)

• Updated menu count assertion from 2 to 3
• Updated Help menu index from 1 to 2
• Added 7 new Simulation menu tests: Start/Stop actions, separator, Speed submenu presence, 5 preset items, correct labels, and keyboard accelerators

Testing

• ✅ Compilation clean
• ✅ detekt and ktlintCheck pass
• ✅ All MenuBarTest integration tests compile and run (skipped in headless CI as expected)

[bedaHovorka]

@copilot : please try again

[bedaHovorka]

@copilot : please try again

[Copilot]

@copilot : please try again

Done in commit 5e85d2c. The implementation adds:

• SimulationController.setSpeed() — stores desired speed and applies it to the current runner immediately; also applied to new runners on start()
• "Simulation" menu (between File and Help) with:
  • Start... — JFileChooser → loads XML as SimulationContext → Frame.setContext() + Frame.startSimulation()
  • Stop — calls Frame.stopSimulation()
  • Separator
  • Speed submenu: 0.1x/0.5x/1x/2x/10x with keyboard accelerators (keys 1–5)
• Updated "Usage" help text documenting the simulation shortcuts
• MenuBarTest updated: menu count 3, Help at index 2, 7 new Simulation menu tests (Start, Stop, separator, Speed submenu, 5 items, labels, accelerators)

[bedaHovorka]

@copilot apply changes based on the comments in this thread

[Copilot]

@copilot apply changes based on the comments in this thread

Done in commit 895fd42. Applied all four issues from the review:

1. Resource leak — StartSimulationAction now loads via editingContextFactory.createContext(file).use { editCtx -> simulationContextFactory.createContext(editCtx) } so the intermediate EditingContext scope is closed immediately after transformation.
2. Report types — simContext.addReportTypes(*ReportType.values()) is called before frame.setContext(), so AnimationController and EventTimelinePanel receive property-change events and the animation is not visually frozen.
3. ModificationTracker — markClean() and setCurrentFile(null) are called before switching to simulation mode, preventing the window-close handler from attempting to save through the editor path.
4. setSpeed() tests — Added 5 new tests to SimulationControllerTest: below-min throws, above-max throws, boundary values accepted, applies immediately to active runner, and pre-selected speed is carried into the next start().

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud