fix(opencode): filter session list by resolved instance directory (#34842)

packages/opencode/src/server/routes/instance/httpapi/handlers/experimental.ts

@@ -137,8 +137,9 @@ export const experimentalHandlers = HttpApiBuilder.group(InstanceHttpApi, "exper
 
     const session = Effect.fn("ExperimentalHttpApi.session")(function* (ctx: { query: typeof SessionListQuery.Type }) {
       const limit = ctx.query.limit ?? 100
+      const directory = ctx.query.directory ? yield* InstanceState.directory : undefined
       const all = yield* sessions.listGlobal({
-        directory: ctx.query.directory,
+        directory,
         roots: ctx.query.roots,
         start: ctx.query.start,
         cursor: ctx.query.cursor,

packages/opencode/src/server/routes/instance/httpapi/handlers/session.ts

@@ -18,6 +18,7 @@ import { MessageID, PartID, SessionID } from "@/session/schema"
 import { NamedError } from "@opencode-ai/core/util/error"
 import { Cause, Effect, Option, Schema, Scope } from "effect"
 import * as Stream from "effect/Stream"
+import { InstanceState } from "@/effect/instance-state"
 import { HttpServerRequest, HttpServerResponse } from "effect/unstable/http"
 import { HttpApiBuilder, HttpApiError, HttpApiSchema } from "effect/unstable/httpapi"
 import { InstanceHttpApi } from "../api"
@@ -61,8 +62,9 @@ export const sessionHandlers = HttpApiBuilder.group(InstanceHttpApi, "session",
     const scope = yield* Scope.Scope
 
     const list = Effect.fn("SessionHttpApi.list")(function* (ctx: { query: typeof ListQuery.Type }) {
+      const directory = ctx.query.directory ? yield* InstanceState.directory : undefined
       return yield* session.list({
-        directory: ctx.query.scope === "project" ? undefined : ctx.query.directory,
+        directory: ctx.query.scope === "project" ? undefined : directory,
         scope: ctx.query.scope,
         path: ctx.query.path,
         roots: ctx.query.roots,

packages/opencode/test/server/httpapi-session.test.ts

@@ -21,6 +21,7 @@ import { InstanceStore } from "../../src/project/instance-store"
 import { Project } from "../../src/project/project"
 import { HttpApiApp } from "../../src/server/routes/instance/httpapi/server"
 import * as HttpSessionError from "../../src/server/routes/instance/httpapi/handlers/session-errors"
+import { ExperimentalPaths } from "../../src/server/routes/instance/httpapi/groups/experimental"
 import { SessionPaths } from "../../src/server/routes/instance/httpapi/groups/session"
 import { Session } from "@/session/session"
 import { MessageID, PartID, SessionID, type SessionID as SessionIDType } from "../../src/session/schema"
@@ -879,6 +880,30 @@ describe("session HttpApi", () => {
     { git: true, config: { formatter: false, lsp: false } },
   )
 
+  it.instance(
+    "lists sessions created through an equivalent directory hint",
+    () =>
+      Effect.gen(function* () {
+        const test = yield* TestInstance
+        const hint = test.directory + path.sep
+        const headers = { "x-opencode-directory": hint, "content-type": "application/json" }
+        const created = yield* requestJson<Session.Info>(SessionPaths.create, {
+          method: "POST",
+          headers,
+          body: JSON.stringify({ title: "hinted" }),
+        })
+
+        const query = new URLSearchParams({ directory: hint, roots: "true" })
+        const listed = yield* requestJson<Session.Info[]>(`${SessionPaths.list}?${query}`, { headers })
+        expect(listed.map((item) => item.id)).toContain(created.id)
+
+        const globalQuery = new URLSearchParams({ directory: hint })
+        const global = yield* requestJson<Session.Info[]>(`${ExperimentalPaths.session}?${globalQuery}`, { headers })
+        expect(global.map((item) => item.id)).toContain(created.id)
+      }),
+    { git: true, config: { formatter: false, lsp: false, share: "disabled" } },
+  )
+
   it.instance(
     "serves paginated message link headers",
     () =>