-- Snapshot the linked interest's pipeline_stage at note-creation time so
-- the timeline of notes carries the stage they were made at. Read by the
-- NotesList UI to render a per-note stage chip.
--
-- Pre-2026-05-15 rows stay null - backfill from audit_logs would be
-- inaccurate (the audit row only captures the AFTER-stage on stage moves,
-- not the at-rest state when a note was inserted). New notes carry the
-- stamp going forward.

ALTER TABLE interest_notes ADD COLUMN IF NOT EXISTS pipeline_stage_at_creation text;
