feat(core): add scout agent for repo research (#24149)

Co-authored-by: Dax Raad <d@ironbay.co>

packages/opencode/src/config/reference.ts

@@ -0,0 +1,27 @@
+export * as ConfigReference from "./reference"
+
+import { Schema } from "effect"
+import { zod } from "@/util/effect-zod"
+import { withStatics } from "@/util/schema"
+
+const Git = Schema.Struct({
+  repository: Schema.String.annotate({
+    description: "Git repository URL, host/path reference, or GitHub owner/repo shorthand",
+  }),
+  branch: Schema.optional(Schema.String).annotate({
+    description: "Branch or ref Scout should clone and inspect",
+  }),
+})
+
+const Local = Schema.Struct({
+  path: Schema.String.annotate({
+    description: "Absolute path, ~/ path, or workspace-relative path to a local reference directory",
+  }),
+})
+
+export const Entry = Schema.Union([Schema.String, Git, Local]).annotate({ identifier: "ReferenceConfigEntry" })
+
+export const Info = Schema.Record(Schema.String, Entry)
+  .annotate({ identifier: "ReferenceConfig" })
+  .pipe(withStatics((s) => ({ zod: zod(s) })))
+export type Info = Schema.Schema.Type<typeof Info>