feat(jobs/runners): attachment cleanup + chat DeleteAttachments query/method

internal/chat/queries/attachments.sql

@@ -30,3 +30,6 @@ JOIN messages m ON m.id = a.message_id
 JOIN conversations c ON c.id = m.conversation_id
 WHERE c.deleted_at IS NOT NULL
   AND c.deleted_at < NOW() - ($1::interval);
+
+-- name: DeleteAttachmentsByIDs :exec
+DELETE FROM message_attachments WHERE id = ANY($1::uuid[]);

internal/chat/repository.go

@@ -58,6 +58,7 @@ type Repository interface {
 	ListExpiredOrphans(ctx context.Context, olderThan time.Duration) ([]AttachmentRef, error)
 	ListAttachmentsForSoftDeletedConversations(ctx context.Context, olderThan time.Duration) ([]AttachmentRef, error)
 	DeleteAttachment(ctx context.Context, id uuid.UUID) error
+	DeleteAttachments(ctx context.Context, ids []uuid.UUID) error
 
 	// ===== PromptTemplate =====
 	InsertPromptTemplate(ctx context.Context, p InsertTemplateParams) (*PromptTemplate, error)
@@ -778,6 +779,20 @@ func (r *pgRepo) DeleteAttachment(ctx context.Context, id uuid.UUID) error {
 	return nil
 }
 
+func (r *pgRepo) DeleteAttachments(ctx context.Context, ids []uuid.UUID) error {
+	if len(ids) == 0 {
+		return nil
+	}
+	pgIDs := make([]pgtype.UUID, len(ids))
+	for i, id := range ids {
+		pgIDs[i] = toPgUUID(id)
+	}
+	if err := r.q.DeleteAttachmentsByIDs(ctx, pgIDs); err != nil {
+		return errs.Wrap(err, errs.CodeInternal, "delete attachments")
+	}
+	return nil
+}
+
 // ===== PromptTemplate =====
 
 func (r *pgRepo) InsertPromptTemplate(ctx context.Context, p InsertTemplateParams) (*PromptTemplate, error) {

internal/chat/service_endpoint_test.go

@@ -244,6 +244,9 @@ func (f *fakeRepo) ListAttachmentsForSoftDeletedConversations(_ context.Context,
 	panic("not implemented")
 }
 func (f *fakeRepo) DeleteAttachment(_ context.Context, _ uuid.UUID) error { panic("not implemented") }
+func (f *fakeRepo) DeleteAttachments(_ context.Context, _ []uuid.UUID) error {
+	panic("not implemented")
+}
 func (f *fakeRepo) InsertPromptTemplate(_ context.Context, _ InsertTemplateParams) (*PromptTemplate, error) {
 	panic("not implemented")
 }

internal/chat/sqlc/attachments.sql.go

@@ -34,6 +34,15 @@ func (q *Queries) DeleteAttachment(ctx context.Context, id pgtype.UUID) error {
 	return err
 }
 
+const deleteAttachmentsByIDs = `-- name: DeleteAttachmentsByIDs :exec
+DELETE FROM message_attachments WHERE id = ANY($1::uuid[])
+`
+
+func (q *Queries) DeleteAttachmentsByIDs(ctx context.Context, dollar_1 []pgtype.UUID) error {
+	_, err := q.db.Exec(ctx, deleteAttachmentsByIDs, dollar_1)
+	return err
+}
+
 const getAttachment = `-- name: GetAttachment :one
 SELECT id, user_id, message_id, filename, mime_type, size_bytes, sha256, storage_path, created_at FROM message_attachments WHERE id = $1
 `

internal/chat/streamer_test.go

@@ -207,6 +207,9 @@ func (panicRepo) ListAttachmentsForSoftDeletedConversations(_ context.Context, _
 	panic("not implemented")
 }
 func (panicRepo) DeleteAttachment(_ context.Context, _ uuid.UUID) error { panic("not implemented") }
+func (panicRepo) DeleteAttachments(_ context.Context, _ []uuid.UUID) error {
+	panic("not implemented")
+}
 func (panicRepo) InsertPromptTemplate(_ context.Context, _ InsertTemplateParams) (*PromptTemplate, error) {
 	panic("not implemented")
 }