fix: resolve oxlint warnings — suppress false positives, remove unused imports (#22687)

packages/opencode/src/file/ignore.ts

@@ -1,4 +1,3 @@
-import { sep } from "node:path"
 import { Glob } from "@opencode-ai/shared/util/glob"
 
 export namespace FileIgnore {

packages/opencode/src/file/watcher.ts

@@ -1,4 +1,4 @@
-import { Cause, Effect, Layer, Scope, Context } from "effect"
+import { Cause, Effect, Layer, Context } from "effect"
 // @ts-ignore
 import { createWrapper } from "@parcel/watcher/wrapper"
 import type ParcelWatcher from "@parcel/watcher"