Phases 1-3 in scope: rename agents → scouts (UI/code/Postgres/SQLite/ Langfuse), Gmail cloud scout w/ two-stage pipeline, SourceConnector abstraction. Phase 4 (Stage 2 categorization + HITL surface in brief) deferred to task-brief rework. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>