CLI 0.9.0 — Channel session switching

nca channels gains a sessions subcommand group for inspecting and managing the per-scope chat sessions that channel bridges create. Same primitives the in-channel slash commands and the web sidebar use, now scriptable from the terminal.

Highlights

• nca channels sessions scopes <channelId> — list scopes in a channel with their active session, total session count, and last activity timestamp.
• nca channels sessions list <channelId> [--scope-key <key>] [--include-archived] — list sessions, with active marker, channel session id, scope, and display name (🏷️ when user-set).
• nca channels sessions new <channelId> --scope-key <key> [--name <name>] — create a new active session in a scope; the previous active becomes inactive.
• nca channels sessions switch <channelId> <sessionId> — make a session active in its scope.
• nca channels sessions rename <channelId> <sessionId> <name> — set the channel display name (the 🏷️ label that shows in /list inside the channel and in the web sidebar).
• nca channels sessions delete <channelId> <sessionId> [--activate-fallback] — archive a session; with --activate-fallback, auto-activate the newest remaining if you delete the active one.

Every command supports --json to emit raw JSON for piping into other tools.

Notes

• Slash commands inside each connected channel — /new, /list, /switch, /current, /rename, /delete, /help — are now always on and mirror the CLI semantics.
• Display name and chat-session title are independent: rename in the CLI / web “Rename channel display” updates display_name; rename in web “Rename session title” updates the chat-session title. Either appears in the web sidebar; the 🏷️ marker indicates a user-set channel display name.
• nca update --force --yes pulls the new binary; existing daemons keep working unchanged.