Summary

Migrates 5 more effects from SWT-OldSchoolEffect to the GraphicsExample framework.

Effects Migrated

• ExplosionTab — Particle system with fire propagation algorithm
• MandelbrotTab — Animated Mandelbrot fractal with continuous zoom
• ShadeBobsTab — Heat trail shade bobs effect moving along a precomputed path
• TwisterTab — Torsion deformation on a checkered pattern
• WaveTab — Multiple wave motion patterns cycling through 4 algorithms

Checklist (per #3189)

• No Color disposal (Colors not disposed — modern SWT)
• Use simple new Color(r, g, b) constructor
• Dispose Images (in dispose() and before recreation in paint())
• Dispose GC (WaveTab disposes its offscreen GC)
• No compiler errors or warnings — build succeeds
• $NON-NLS-1$ markers on resource key strings
• Proper EPL-2.0 copyright header with original author credit
• Category = "Misc"
• Localized strings in examples_graphics.properties
• Inner classes for helpers (Particle in ExplosionTab)

Build Verification

mvn clean verify -Dnative=gtk.linux.x86_64 -DskipTests — BUILD SUCCESS

Fixes #3189