Radio Tail Timer 2D: RRC State-Machine Cascade

This is the 2D companion to the "Radio Tail Timer" 3D simulation, and it models the phone-to-tower radio tail effect at a deeper level of detail: a genuine 3-state RRC cascade (IDLE → high-power DCH → intermediate-power FACH → IDLE) with two independent tail timers and two different reactivation costs, rather than a single idle/active toggle. Telemetry events queue on the device and flush to the tower once the batch threshold is reached; watch the state-machine diagram step through IDLE, FACH and DCH, the scrolling power strip-chart track instantaneous draw, and the battery, duty-cycle and reactivation-count readouts update live. Toggle Poisson jitter to see how bursty, irregular real-world traffic differs from a smooth deterministic stream, and compare the naive and batched presets to see how landing flushes inside the cheap FACH window instead of triggering full re-promotions changes the battery bill.