Fix tests for periodic front angle update mechanism

[Copilot]

The new front angle update logic (d5e08f15) increments creature->frontAngleId every Cell::UpdateInterval (100) timesteps and increments lastUpdate unconditionally for all non-head cells. Cells with lastUpdate > 110 transition to CellState_Dying. This means any creature without a headCell will have its cells die after ~111 timesteps, breaking 200+ tests.

CellStateTransitionTests

• Removed CellDeathConsequences parameterization (no longer exists in kernel)
• Removed Detaching propagation tests (mechanism removed)
• Added lastUpdate-based death tests: threshold check, fixed cell exemption, head cell exemption

FrontAngleUpdateTests

• noUpdate_equalFrontAngleId: periodic mechanism now bumps creature->frontAngleId even when initially equal — updated expectations to expect propagated front angle values

MuscleTests, PhysicsTests, ConstructorTests, CreatureTests, EnergyFlowTests, BalanceTests, GeneratorTests

• Added headCell(true) to an appropriate cell in each test creature
• Added GenomeDesc().frontAngle(...) matching the muscle cell's explicit front angle where needed

EntityFactory bug fix

• EntityFactory::createCellFromNode was missing cell.lastUpdate = 0 initialization. Newly constructed cells inherited garbage values from CUDA heap memory, causing them to immediately transition to CellState_Dying when lastUpdate > 110. This only manifested when running tests non-isolated (due to CUDA heap memory reuse from previous tests).

ConstructorTests_BendingMuscles fix

• Updated resetBendingMuscle test expectation from InitialFrontAngleId + 1 to InitialFrontAngleId + 2 — at timestep 0, both the periodic mechanism (timestep % 100 == 0) and activateNewObjectOnLastNode each bump creature->frontAngleId.

Example fix pattern for muscle tests:

// Before: cells die after ~111 timesteps (no head cell)
auto data = Desc().addCreature(
    { ObjectDesc().id(1).pos({10.0f, 10.0f}),
      ObjectDesc().id(2).pos({11.0f, 10.0f})
          .type(CellDesc().frontAngle(-90.0f).cellType(MuscleDesc()...)) },
    CreatureDesc().id(0));

// After: muscle cell is head cell, gets frontAngle from genome, propagates to neighbors
auto data = Desc().addCreature(
    { ObjectDesc().id(1).pos({10.0f, 10.0f}).type(CellDesc().headCell(true)),
      ObjectDesc().id(2).pos({11.0f, 10.0f})
          .type(CellDesc().frontAngle(-90.0f).headCell(true).cellType(MuscleDesc()...)) },
    CreatureDesc().id(0), GenomeDesc().frontAngle(-90.0f));

Verified: All 204 ConstructorTests pass (201 pass, 3 pre-existing skips). All 144 FrontAngleUpdate + Physics + Muscle tests pass.

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[chrxh]

@copilot Try to make the test ConstructorTests_AllShapes::creature_3__generateShape running.
The tests are successful when running isolated. The failure has to do with the logic in frontAngleUpdate_calcFutureValue and frontAngleUpdate_applyFutureValue.
Try to debug with printf there to find the reason for failing.

[Copilot]

@copilot Try to make the test ConstructorTests_AllShapes::creature_3__generateShape running.
The tests are successful when running isolated. The failure has to do with the logic in fr...

Fixed in 36d9f11. Root cause: EntityFactory::createCellFromNode did not initialize cell.lastUpdate = 0, so newly constructed cells inherited garbage values from the CUDA heap. When running non-isolated, heap memory from previous tests contained non-zero lastUpdate values (>110), causing constructed cells to immediately transition to CellState_Dying.

Two fixes:

1. EntityFactory.cuh: Added cell.lastUpdate = 0; in createCellFromNode to properly initialize the field
2. ConstructorTests.cpp: Updated ConstructorTests_BendingMuscles::resetBendingMuscle expectation from InitialFrontAngleId + 1 to InitialFrontAngleId + 2 — at timestep 0, both the periodic mechanism (timestep % 100 == 0) and activateNewObjectOnLastNode each bump creature->frontAngleId

All 204 ConstructorTests now pass (201 pass, 3 pre-existing skips).