Changeset 0.37.15 (#227)

server/store/interfaces.go

@@ -510,6 +510,9 @@ type ChannelStore interface {
 	// CompleteWorkflow sets workflow_status='completed' and ai_mode='off'.
 	CompleteWorkflow(ctx context.Context, channelID string, finalStage int, stageData json.RawMessage) error
 
+	// CancelWorkflow sets workflow_status='cancelled' and ai_mode='off'. (v0.37.15)
+	CancelWorkflow(ctx context.Context, channelID string) error
+
 	// RejectWorkflowToStage resets current_stage (no stage_data change).
 	RejectWorkflowToStage(ctx context.Context, channelID string, stage int) error
 

server/store/postgres/channel.go

@@ -644,6 +644,15 @@ func (s *ChannelStore) CompleteWorkflow(ctx context.Context, channelID string, f
 	return err
 }
 
+func (s *ChannelStore) CancelWorkflow(ctx context.Context, channelID string) error {
+	_, err := DB.ExecContext(ctx, `
+		UPDATE channels
+		SET workflow_status = 'cancelled', ai_mode = 'off', last_activity_at = $1
+		WHERE id = $2 AND type = 'workflow'
+	`, time.Now().UTC(), channelID)
+	return err
+}
+
 func (s *ChannelStore) RejectWorkflowToStage(ctx context.Context, channelID string, stage int) error {
 	now := time.Now().UTC()
 	_, err := DB.ExecContext(ctx, `

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, `

server/store/sqlite/channel.go

@@ -645,6 +645,15 @@ func (s *ChannelStore) CompleteWorkflow(ctx context.Context, channelID string, f
 	return err
 }
 
+func (s *ChannelStore) CancelWorkflow(ctx context.Context, channelID string) error {
+	_, err := DB.ExecContext(ctx, `
+		UPDATE channels
+		SET workflow_status = 'cancelled', ai_mode = 'off', last_activity_at = ?
+		WHERE id = ? AND type = 'workflow'
+	`, time.Now().UTC().Format(timeFmt), channelID)
+	return err
+}
+
 func (s *ChannelStore) RejectWorkflowToStage(ctx context.Context, channelID string, stage int) error {
 	now := time.Now().UTC().Format(timeFmt)
 	_, err := DB.ExecContext(ctx, `

server/store/sqlite/workflows.go

@@ -452,6 +452,56 @@ 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 = ? 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 = ? 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 = ?, claimed_at = ?
+		WHERE id = ? AND status = 'claimed'
+	`, newUserID, time.Now().UTC().Format(timeFmt), 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 = ? 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) {
 	rows, err := DB.QueryContext(ctx, `
 		SELECT m.user_id, COALESCE(MAX(wa.claimed_at), '1970-01-01 00:00:00') as last_claim

server/store/workflow_iface.go

@@ -55,6 +55,23 @@ type WorkflowStore interface {
 	// Returns the assigned user ID, or "" if no members available.
 	TryRoundRobin(ctx context.Context, teamID, assignmentID string) (string, error)
 
+	// ── Lifecycle operations (v0.37.15) ──
+
+	// CancelAssignmentsForChannel sets status='cancelled' on all
+	// unassigned/claimed assignments for a channel.
+	CancelAssignmentsForChannel(ctx context.Context, channelID string) (int64, error)
+
+	// UnclaimAssignment returns a claimed assignment to unassigned.
+	// Returns rows affected (0 = not claimed or not found).
+	UnclaimAssignment(ctx context.Context, assignmentID string) (int64, error)
+
+	// ReassignAssignment changes assigned_to on a claimed assignment.
+	// Returns rows affected.
+	ReassignAssignment(ctx context.Context, assignmentID, newUserID string) (int64, error)
+
+	// CancelAssignment sets a single assignment to cancelled.
+	CancelAssignment(ctx context.Context, assignmentID string) (int64, error)
+
 	// ── Review Comments (v0.35.0) ──
 
 	// GetAssignmentByID returns a single assignment by ID.