feat: agent registry, agents list command, and working agent-creator flow

fix: wire Telegram channel to orchestrator and propagate user_id for replies

fix: maintain conversation context via Claude CLI session resumption

fix: show prompt only after response arrives, not immediately after input

fix: cancel orchestrator task when CLI feed ends (/exit now works)

feat: /exit and /quit commands to stop the CLI session

feat: dispatch via claude CLI subprocess; login accepts API key; update tests

fix: login stores Anthropic API key; dispatcher uses api_key instead of auth_token

fix: SubagentDispatcher passes OAuth token to Anthropic SDK

fix: login reads Claude Code OAuth token from macOS keychain instead of broken OAuth flow

test: Plan 7 integration verification — all three channels route to orchestrator

feat: channel manager wires WhatsApp, Slack, and Web adapters

feat: channel add CLI commands for whatsapp, slack, and web

feat: Web UI channel adapter with WebSocket and minimal chat frontend

fix: add type annotation and null guard to SlackAdapter