feat(core): add location-scoped config loading (#29625)

packages/core/src/location.ts

@@ -1,11 +1,40 @@
-import { Context, Schema } from "effect"
+import { Context, Effect, Layer, Schema } from "effect"
+import { Project } from "./project"
+import { AbsolutePath } from "./schema"
 
 export * as Location from "./location"
 
 export const Ref = Schema.Struct({
-  directory: Schema.String,
+  directory: AbsolutePath,
   workspaceID: Schema.optional(Schema.String),
 }).annotate({ identifier: "Location.Ref" })
 export type Ref = typeof Ref.Type
 
-export class Service extends Context.Service<Service, Ref>()("@opencode/Location") {}
+export interface Interface {
+  readonly directory: AbsolutePath
+  readonly workspaceID?: string
+  readonly project: {
+    readonly id: Project.ID
+    readonly directory: AbsolutePath
+  }
+  readonly vcs?: Project.Vcs
+}
+
+export class Service extends Context.Service<Service, Interface>()("@opencode/Location") {}
+
+export const layer = (ref: Ref) =>
+  Layer.effect(
+    Service,
+    Effect.gen(function* () {
+      const project = yield* Project.Service
+      const resolved = yield* project.resolve(ref.directory)
+      return Service.of({
+        directory: ref.directory,
+        workspaceID: ref.workspaceID,
+        project: { id: resolved.id, directory: resolved.directory },
+        vcs: resolved.vcs,
+      })
+    }),
+  )
+
+export const defaultLayer = (ref: Ref) => layer(ref).pipe(Layer.provide(Project.defaultLayer))