Coven CLI Adds TUI and Session Browser

A rapid Coven CLI release train shipped the early terminal UI, visible session actions, and human-friendly session management.

Highlights:

• Added beginner-friendly CLI flows and the slash-command TUI.
• Published Coven CLI releases through 0.0.10.
• Added coven tui, richer session actions, and a human session browser.
• Updated README/package docs and release wiring alongside the CLI behavior.