refactor(prompt): use Provider service in effect layers (#20167)

packages/opencode/src/session/compaction.ts

@@ -63,7 +63,13 @@ export namespace SessionCompaction {
   export const layer: Layer.Layer<
     Service,
     never,
-    Bus.Service | Config.Service | Session.Service | Agent.Service | Plugin.Service | SessionProcessor.Service
+    | Bus.Service
+    | Config.Service
+    | Session.Service
+    | Agent.Service
+    | Plugin.Service
+    | SessionProcessor.Service
+    | Provider.Service
   > = Layer.effect(
     Service,
     Effect.gen(function* () {
@@ -73,6 +79,7 @@ export namespace SessionCompaction {
       const agents = yield* Agent.Service
       const plugin = yield* Plugin.Service
       const processors = yield* SessionProcessor.Service
+      const provider = yield* Provider.Service
 
       const isOverflow = Effect.fn("SessionCompaction.isOverflow")(function* (input: {
         tokens: MessageV2.Assistant["tokens"]
@@ -170,11 +177,9 @@ export namespace SessionCompaction {
         }
 
         const agent = yield* agents.get("compaction")
-        const model = yield* Effect.promise(() =>
-          agent.model
-            ? Provider.getModel(agent.model.providerID, agent.model.modelID)
-            : Provider.getModel(userMessage.model.providerID, userMessage.model.modelID),
-        )
+        const model = agent.model
+          ? yield* provider.getModel(agent.model.providerID, agent.model.modelID)
+          : yield* provider.getModel(userMessage.model.providerID, userMessage.model.modelID)
         // Allow plugins to inject context or replace compaction prompt.
         const compacting = yield* plugin.trigger(
           "experimental.session.compacting",
@@ -377,6 +382,7 @@ When constructing the summary, try to stick to this template:
   export const defaultLayer = Layer.unwrap(
     Effect.sync(() =>
       layer.pipe(
+        Layer.provide(Provider.defaultLayer),
         Layer.provide(Session.defaultLayer),
         Layer.provide(SessionProcessor.defaultLayer),
         Layer.provide(Agent.defaultLayer),