Give messaging clear exact subtree semantics (#1072)

Preserve user messages during messaging clear (#1068)

Make Telegram startup notices clearable (#1066)

Use task status as the sole stop confirmation (#1065)

Keep voice ownership continuous through admission (#1063)

Make application shutdown completion-driven (#1056)

Make messaging trees atomic ownership boundaries (#1048)

Establish single-owner runtime with stream-safe provider hot swaps (#1036)

Move runtime packages under src namespace (#1029)