core: improve dependency management and error handling for more reliable builds

packages/opencode/src/util/context.ts

@@ -2,7 +2,7 @@ import { AsyncLocalStorage } from "async_hooks"
 
 export namespace Context {
   export class NotFound extends Error {
-    constructor(public readonly name: string) {
+    constructor(public override readonly name: string) {
       super(`No context found for ${name}`)
     }
   }

packages/opencode/src/util/error.ts

@@ -19,7 +19,7 @@ export abstract class NamedError extends Error {
     const result = class extends NamedError {
       public static readonly Schema = schema
 
-      public readonly name = name as Name
+      public override readonly name = name as Name
 
       constructor(
         public readonly data: z.input<Data>,