Advanced AI Prompt for Three.js Mouse-Trail Particle Emitter

Act as a Senior Interactive Frontend Developer. Build a performant Three.js hero interaction where a dense stream of particles is continuously emitted directly from the user's projected 2D-to-3D cursor coordinates. Set the [EMISSION_RATE] high enough to create an unbroken fluid stream. Apply a downward [GRAVITY_FORCE] vector and an aggressive [PARTICLE_DECAY] rate that shrinks the geometry scale to zero over time. Interpolate the material color along a [TRAIL_COLOR] gradient based on the particle's age. The architecture *must* utilize a strict object-pooling pattern (pre-allocating a fixed array of meshes or buffer vertices) to ensure zero instantiation or garbage collection occurs during rapid mouse movements, guaranteeing a locked 60fps.