What
Sessions initiated via autonomous tick-based inputs now display "Autonomous session" as the default title.
Details: When the first prompt starts with <tick>, the session is labeled "Autonomous session" rather than showing the prompt content.
Evidence
ad() at line 5350 (session title generator, contains B ? "Autonomous session" : "" when firstPrompt?.startsWith("<tick>"))
Strings lifted out of the shipped bundle, so the claim above can be checked against them.