refactor(server): serve raw filesystem content (#31911)

packages/server/src/groups/fs.ts

@@ -2,14 +2,9 @@ import { FileSystem } from "@opencode-ai/core/filesystem"
 import { Location } from "@opencode-ai/core/location"
 import { PositiveInt, RelativePath } from "@opencode-ai/core/schema"
 import { Schema } from "effect"
-import { HttpApiEndpoint, HttpApiGroup, OpenApi } from "effect/unstable/httpapi"
+import { HttpApiEndpoint, HttpApiGroup, HttpApiSchema, OpenApi } from "effect/unstable/httpapi"
 import { LocationQuery, locationQueryOpenApi, LocationMiddleware } from "./location"
 
-const ReadQuery = Schema.Struct({
-  ...LocationQuery.fields,
-  path: RelativePath,
-})
-
 const ListQuery = Schema.Struct({
   ...LocationQuery.fields,
   path: RelativePath.pipe(Schema.optional),
@@ -24,16 +19,16 @@ const FindQuery = Schema.Struct({
 
 export const FileSystemGroup = HttpApiGroup.make("server.fs")
   .add(
-    HttpApiEndpoint.get("fs.read", "/api/fs/read", {
-      query: ReadQuery,
-      success: Location.response(FileSystem.Content),
+    HttpApiEndpoint.get("fs.read", "/api/fs/read/*", {
+      query: LocationQuery,
+      success: Schema.Uint8Array.pipe(HttpApiSchema.asUint8Array()),
     })
       .annotateMerge(locationQueryOpenApi)
       .annotateMerge(
         OpenApi.annotations({
           identifier: "v2.fs.read",
           summary: "Read file",
-          description: "Read one file relative to the requested location.",
+          description: "Serve one file relative to the requested location.",
         }),
       ),
   )

packages/server/src/handlers/fs.ts

@@ -1,5 +1,7 @@
 import { FileSystem } from "@opencode-ai/core/filesystem"
+import { RelativePath } from "@opencode-ai/core/schema"
 import { Effect } from "effect"
+import { HttpServerResponse } from "effect/unstable/http"
 import { HttpApiBuilder } from "effect/unstable/httpapi"
 import { Api } from "../api"
 import { response } from "../groups/location"
@@ -7,13 +9,13 @@ import { response } from "../groups/location"
 export const FileSystemHandler = HttpApiBuilder.group(Api, "server.fs", (handlers) =>
   Effect.gen(function* () {
     return handlers
-      .handle("fs.read", (ctx) =>
-        response(
-          Effect.gen(function* () {
-            const fs = yield* FileSystem.Service
-            return yield* fs.read(ctx.query)
-          }),
-        ),
+      .handleRaw("fs.read", (ctx) =>
+        Effect.gen(function* () {
+          const file = yield* (yield* FileSystem.Service).read({
+            path: RelativePath.make(decodeURIComponent(new URL(ctx.request.url, "http://localhost").pathname.slice(13))),
+          })
+          return HttpServerResponse.uint8Array(file.content, { contentType: file.mime })
+        }),
       )
       .handle("fs.list", (ctx) =>
         response(