calculateValue

Calculates the current value of this dust token at a specific time.

Algorithm:

1. Generation Phase (creation → full capacity):

• Value increases linearly: rate × time_elapsed + initial_value

• Rate: backing_night_value × generation_decay_rate

• Cap: backing_night_value × night_dust_ratio

2. Full Phase (full capacity → backing night destroyed):

• Value stays constant at cap

3. Decay Phase (backing night destroyed → empty):

• Value decreases linearly: cap - (rate × time_since_destroyed)

• Falls to zero

4. Empty Phase: Value stays at zero

Note: The full time-phase calculation is not yet implemented; this currently returns the initial value. Full evaluation requires the dust generation info, the backing Night value, and its destruction time.

Parameters