Updated following dependencies as they need changes to the code to work properly:

- Scala
- fs2
- http4s

modules/backend/src/main/scala/docspell/backend/BackendApp.scala

@@ -7,6 +7,7 @@
 package docspell.backend
 
 import cats.effect._
+import fs2.io.file.Files
 
 import docspell.backend.BackendCommands.EventContext
 import docspell.backend.auth.Login
@@ -65,7 +66,7 @@ trait BackendApp[F[_]] {
 
 object BackendApp {
 
-  def create[F[_]: Async](
+  def create[F[_]: Async: Files](
       cfg: Config,
       store: Store[F],
       javaEmil: Emil[F],

modules/backend/src/main/scala/docspell/backend/joex/AddonOps.scala

@@ -9,6 +9,7 @@ package docspell.backend.joex
 import cats.data.OptionT
 import cats.effect._
 import cats.syntax.all._
+import fs2.io.file.Files
 
 import docspell.addons._
 import docspell.backend.joex.AddonOps.{AddonRunConfigRef, ExecResult}
@@ -98,7 +99,7 @@ object AddonOps {
       )
   }
 
-  def apply[F[_]: Async](
+  def apply[F[_]: Async: Files](
       cfg: AddonEnvConfig,
       store: Store[F],
       cmdRunner: BackendCommandRunner[F, Unit],
@@ -160,7 +161,10 @@ object AddonOps {
           execRes = ExecResult(List(result), List(runCfg))
         } yield execRes
 
-      def createMiddleware(custom: Middleware[F], runCfg: AddonRunConfigRef) = for {
+      def createMiddleware(
+          custom: Middleware[F],
+          runCfg: AddonRunConfigRef
+      ): F[Middleware[F]] = for {
         dscMW <- prepare.createDscEnv(runCfg, cfg.executorConfig.runTimeout)
         mm = dscMW >> custom >> prepare.logResult(logger, runCfg) >> Middleware
           .ephemeralRun[F]

modules/backend/src/main/scala/docspell/backend/ops/AddonValidate.scala

@@ -10,7 +10,7 @@ import cats.data.EitherT
 import cats.effect._
 import cats.syntax.all._
 import fs2.Stream
-import fs2.io.file.Path
+import fs2.io.file.{Files, Path}
 
 import docspell.addons.{AddonMeta, RunnerType}
 import docspell.backend.Config
@@ -21,7 +21,7 @@ import docspell.joexapi.model.AddonSupport
 import docspell.store.Store
 import docspell.store.records.RAddonArchive
 
-final class AddonValidate[F[_]: Async](
+final class AddonValidate[F[_]: Async: Files](
     cfg: Config.Addons,
     store: Store[F],
     joexOps: OJoex[F]

modules/backend/src/main/scala/docspell/backend/ops/OAddons.scala

@@ -9,6 +9,7 @@ package docspell.backend.ops
 import cats.data.{EitherT, NonEmptyList, OptionT}
 import cats.effect._
 import cats.syntax.all._
+import fs2.io.file.Files
 
 import docspell.addons.{AddonMeta, AddonTriggerType}
 import docspell.backend.ops.AddonValidationError._
@@ -129,7 +130,7 @@ object OAddons {
     def failure[A](error: AddonValidationError): AddonValidationResult[A] = Left(error)
   }
 
-  def apply[F[_]: Async](
+  def apply[F[_]: Async: Files](
       cfg: Config.Addons,
       store: Store[F],
       userTasks: UserTaskStore[F],