fix(httpapi): align runtime query schemas with workspace routing params (#26581)

Co-authored-by: Developer <temp@example.com>

packages/opencode/src/server/routes/instance/httpapi/middleware/workspace-routing.ts

@@ -9,11 +9,21 @@ import * as Fence from "@/server/shared/fence"
 import { getWorkspaceRouteSessionID, isLocalWorkspaceRoute, workspaceProxyURL } from "@/server/shared/workspace-routing"
 import { NotFoundError } from "@/storage/storage"
 import { Flag } from "@opencode-ai/core/flag/flag"
-import { Context, Data, Effect, Layer } from "effect"
+import { Context, Data, Effect, Layer, Schema } from "effect"
 import { HttpClient, HttpRouter, HttpServerRequest, HttpServerResponse } from "effect/unstable/http"
 import { HttpApiMiddleware } from "effect/unstable/httpapi"
 import * as Socket from "effect/unstable/socket/Socket"
 
+// Query fields this middleware reads from the URL. Spread into every
+// endpoint query schema in groups that apply WorkspaceRoutingMiddleware,
+// otherwise HttpApi rejects requests carrying these params with 400.
+// HttpApiMiddleware in effect-smol cannot declare query params today —
+// remove this once upstream supports middleware-declared query schemas.
+export const WorkspaceRoutingQueryFields = {
+  directory: Schema.optional(Schema.String),
+  workspace: Schema.optional(Schema.String),
+}
+
 type RemoteTarget = Extract<Target, { type: "remote" }>
 
 type RequestPlan = Data.TaggedEnum<{