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

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

packages/core/src/global.ts

@@ -20,6 +20,7 @@ const paths = {
   data,
   bin: path.join(cache, "bin"),
   log: path.join(data, "log"),
+  repos: path.join(data, "repos"),
   cache,
   config,
   state,
@@ -37,6 +38,7 @@ await Promise.all([
   fs.mkdir(Path.tmp, { recursive: true }),
   fs.mkdir(Path.log, { recursive: true }),
   fs.mkdir(Path.bin, { recursive: true }),
+  fs.mkdir(Path.repos, { recursive: true }),
 ])
 
 export class Service extends Context.Service<Service, Interface>()("@opencode/Global") {}
@@ -50,6 +52,7 @@ export interface Interface {
   readonly tmp: string
   readonly bin: string
   readonly log: string
+  readonly repos: string
 }
 
 export function make(input: Partial<Interface> = {}): Interface {
@@ -62,6 +65,7 @@ export function make(input: Partial<Interface> = {}): Interface {
     tmp: Path.tmp,
     bin: Path.bin,
     log: Path.log,
+    repos: Path.repos,
     ...input,
   }
 }