Three new modules completing the server-side functionality:
1. ConversationService: spawns CLI as subprocess with --input-format
stream-json, forwards WebSocket messages to CLI stdin/stdout.
CLI handles all AI communication, tool execution, and permissions.
Graceful fallback to echo mode when CLI unavailable.
2. Agent Teams API: GET/DELETE /api/teams, member listing with status
derivation (running/idle/completed), transcript reading from
CLI-generated JSONL files. Teams created by CLI, API is read-only.
3. TaskService: replaces placeholder with real task file scanning
from ~/.claude/tasks/, supports nested team directories.
229 tests passing (49 new: 12 conversations + 27 teams + 10 tasks).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
