refactor(instance-store): consolidate dispose helpers (#25424)

packages/opencode/src/server/routes/global.ts

@@ -200,7 +200,7 @@ export const GlobalRoutes = lazy(() =>
         },
       }),
       async (c) => {
-        await InstanceStore.runtime.runPromise((s) => s.disposeAll())
+        await InstanceStore.disposeAllInstances()
         GlobalBus.emit("event", {
           directory: "global",
           payload: {

packages/opencode/src/server/routes/instance/index.ts

@@ -63,7 +63,7 @@ export const InstanceRoutes = (upgrade: UpgradeWebSocket): Hono => {
         },
       }),
       async (c) => {
-        await InstanceStore.runtime.runPromise((s) => s.dispose(Instance.current))
+        await InstanceStore.disposeInstance(Instance.current)
         return c.json(true)
       },
     )

packages/opencode/src/server/routes/instance/project.ts

@@ -81,7 +81,11 @@ export const ProjectRoutes = lazy(() =>
           Project.Service.use((svc) => svc.initGit({ directory: dir, project: prev })),
         )
         if (next.id === prev.id && next.vcs === prev.vcs && next.worktree === prev.worktree) return c.json(next)
-        await Instance.reload({ directory: dir, worktree: dir, project: next })
+        await Instance.reload({
+          directory: dir,
+          worktree: dir,
+          project: next,
+        })
         return c.json(next)
       },
     )