Changeset 0.37.15 (#227)

server/store/postgres/workflows.go

@@ -449,6 +449,56 @@ func (s *WorkflowStore) GetAssignmentChannelID(ctx context.Context, assignmentID
 	return channelID, err
 }
 
+// ── Lifecycle operations (v0.37.15) ──
+
+func (s *WorkflowStore) CancelAssignmentsForChannel(ctx context.Context, channelID string) (int64, error) {
+	res, err := DB.ExecContext(ctx, `
+		UPDATE workflow_assignments
+		SET status = 'cancelled'
+		WHERE channel_id = $1 AND status IN ('unassigned', 'claimed')
+	`, channelID)
+	if err != nil {
+		return 0, err
+	}
+	return res.RowsAffected()
+}
+
+func (s *WorkflowStore) UnclaimAssignment(ctx context.Context, assignmentID string) (int64, error) {
+	res, err := DB.ExecContext(ctx, `
+		UPDATE workflow_assignments
+		SET status = 'unassigned', assigned_to = NULL, claimed_at = NULL
+		WHERE id = $1 AND status = 'claimed'
+	`, assignmentID)
+	if err != nil {
+		return 0, err
+	}
+	return res.RowsAffected()
+}
+
+func (s *WorkflowStore) ReassignAssignment(ctx context.Context, assignmentID, newUserID string) (int64, error) {
+	res, err := DB.ExecContext(ctx, `
+		UPDATE workflow_assignments
+		SET assigned_to = $1, claimed_at = $2
+		WHERE id = $3 AND status = 'claimed'
+	`, newUserID, time.Now().UTC(), assignmentID)
+	if err != nil {
+		return 0, err
+	}
+	return res.RowsAffected()
+}
+
+func (s *WorkflowStore) CancelAssignment(ctx context.Context, assignmentID string) (int64, error) {
+	res, err := DB.ExecContext(ctx, `
+		UPDATE workflow_assignments
+		SET status = 'cancelled'
+		WHERE id = $1 AND status IN ('unassigned', 'claimed')
+	`, assignmentID)
+	if err != nil {
+		return 0, err
+	}
+	return res.RowsAffected()
+}
+
 func (s *WorkflowStore) TryRoundRobin(ctx context.Context, teamID, assignmentID string) (string, error) {
 	// Find least-recently-assigned team member
 	rows, err := DB.QueryContext(ctx, `