The Dover Divergence with Rome
A new timeline is established in accordance with WST-CPTL01 rules: Julius Caesar is denied his BCE 55 crossing of the Dover Straits, and the planned Roman invasion of Pretannia does not occur.
No time fractures are permitted. Breanna is unable to halt time during the battle to save Eoin, who is gravely injured by fragments of a Roman fire-spear. This constraint forces Breanna to reconsider battlefield survivability and leads her to plan the future use of Tuatha healing pools in the mid–5th century CE as a controlled safety outlet.