Remove redundant OpenCodeRuntimeLive provision from RuntimeDependenciesLive

OpenCodeRuntimeLive was provided twice: once at the RuntimeDependenciesLive level
in server.ts and again inside ProviderRegistryLive. Since ProviderRegistryLive
already provides OpenCodeRuntime in its output (via Layer.provideMerge), the
earlier provision in RuntimeDependenciesLive was redundant. Remove it to keep a
single canonical provision site in ProviderRegistryLive.

Author: cursoragent

apps/server/src/server.ts

@@ -72,7 +72,6 @@ import {
   makePersistedServerRuntimeState,
   persistServerRuntimeState,
 } from "./serverRuntimeState.ts";
-import { OpenCodeRuntimeLive } from "./provider/opencodeRuntime.ts";
 import {
   orchestrationDispatchRouteLayer,
   orchestrationSnapshotRouteLayer,
@@ -227,7 +226,6 @@ const ProviderRuntimeLayerLive = ProviderSessionReaperLive.pipe(
 
 const RuntimeDependenciesLive = ReactorLayerLive.pipe(
   // Core Services
-  Layer.provideMerge(OpenCodeRuntimeLive),
   Layer.provideMerge(CheckpointingLayerLive),
   Layer.provideMerge(GitLayerLive),
   Layer.provideMerge(ProviderRuntimeLayerLive),