diff --git a/packages/app/src/context/platform.tsx b/packages/app/src/context/platform.tsx
index 3bdc46391b..38c742301b 100644
--- a/packages/app/src/context/platform.tsx
+++ b/packages/app/src/context/platform.tsx
@@ -9,6 +9,96 @@ type OpenFilePickerOptions = { title?: string; multiple?: boolean; accept?: stri
 type SaveFilePickerOptions = { title?: string; defaultPath?: string }
 type UpdateInfo = { updateAvailable: boolean; version?: string }
 
+export type LocalServerMode = "windows" | "wsl"
+export type LocalServerStep = "wsl" | "distro" | "opencode" | "switch"
+export type LocalServerMismatchAcknowledgement = {
+  path: string
+  version: string
+}
+export type LocalServerWslCheck = {
+  available: boolean
+  version: string | null
+  status: string | null
+  error: string | null
+}
+export type LocalServerInstalledDistro = {
+  name: string
+  state: string | null
+  version: number | null
+  isDefault: boolean
+}
+export type LocalServerOnlineDistro = {
+  name: string
+  label: string
+}
+export type LocalServerDistroProbe = {
+  name: string
+  canExecute: boolean
+  hasBash: boolean
+  hasCurl: boolean
+  username: string | null
+  isRoot: boolean | null
+  error: string | null
+}
+export type LocalServerDistroCheck = {
+  installed: LocalServerInstalledDistro[]
+  online: LocalServerOnlineDistro[]
+  selected: LocalServerDistroProbe | null
+  error: string | null
+}
+export type LocalServerTranscriptLine = {
+  stream: "stdout" | "stderr" | "system"
+  text: string
+  at: number
+}
+export type LocalServerConfig = {
+  mode: LocalServerMode
+  distro: string | null
+  onboarding: {
+    step: LocalServerStep | null
+    complete: boolean
+    pendingRestart: boolean
+  }
+  acknowledgements: {
+    root: string[]
+    mismatch: LocalServerMismatchAcknowledgement[]
+  }
+}
+export type LocalServerStatus =
+  | { kind: "idle" }
+  | { kind: "ready" }
+  | { kind: "running"; step: LocalServerStep | null }
+  | { kind: "failed"; step: LocalServerStep | null; message: string }
+export type LocalServerState = {
+  config: LocalServerConfig
+  runtime: {
+    key: string
+    mode: LocalServerMode
+    distro: string | null
+  }
+  status: LocalServerStatus
+  job: { step: LocalServerStep | null; startedAt: number } | null
+  checks: {
+    wsl: LocalServerWslCheck | null
+    distro: LocalServerDistroCheck | null
+  }
+  transcript: LocalServerTranscriptLine[]
+}
+export type LocalServerEvent = {
+  type: "state"
+  state: LocalServerState
+}
+export type LocalServerPlatform = {
+  getState(): Promise<LocalServerState>
+  setConfig(config: LocalServerConfig): Promise<void>
+  runStep(step: LocalServerStep): Promise<void>
+  cancelJob(): Promise<void>
+  installWsl(): Promise<void>
+  installDistro(name: string): Promise<void>
+  openTerminal(): Promise<void>
+  subscribe(cb: (event: LocalServerEvent) => void): () => void
+}
+
 export type Platform = {
   /** Platform discriminator */
   platform: "web" | "desktop"
@@ -64,6 +154,9 @@ export type Platform = {
   /** Set the default server URL to use on app startup (platform-specific) */
   setDefaultServer?(url: ServerConnection.Key | null): Promise<void> | void
 
+  /** Manage the desktop Local Server lifecycle (desktop only) */
+  localServer?: LocalServerPlatform
+
   /** Get the configured WSL integration (desktop only) */
   getWslEnabled?(): Promise<boolean>
 
diff --git a/packages/app/src/index.ts b/packages/app/src/index.ts
index d80e9fffb0..4e01e764fe 100644
--- a/packages/app/src/index.ts
+++ b/packages/app/src/index.ts
@@ -2,6 +2,16 @@ export { AppBaseProviders, AppInterface } from "./app"
 export { ACCEPTED_FILE_EXTENSIONS, ACCEPTED_FILE_TYPES, filePickerFilters } from "./constants/file-picker"
 export { useCommand } from "./context/command"
 export { loadLocaleDict, normalizeLocale, type Locale } from "./context/language"
-export { type DisplayBackend, type Platform, PlatformProvider } from "./context/platform"
+export {
+  type DisplayBackend,
+  type LocalServerConfig,
+  type LocalServerEvent,
+  type LocalServerMode,
+  type LocalServerPlatform,
+  type LocalServerState,
+  type LocalServerStep,
+  type Platform,
+  PlatformProvider,
+} from "./context/platform"
 export { ServerConnection } from "./context/server"
 export { handleNotificationClick } from "./utils/notification-click"
diff --git a/packages/desktop-electron/src/renderer/index.tsx b/packages/desktop-electron/src/renderer/index.tsx
index 9ce70e5a99..1b3c409340 100644
--- a/packages/desktop-electron/src/renderer/index.tsx
+++ b/packages/desktop-electron/src/renderer/index.tsx
@@ -214,6 +214,17 @@ const createPlatform = (): Platform => {
       await window.api.setDefaultServerUrl(url)
     },
 
+    localServer: {
+      getState: () => window.api.localServer.getState(),
+      setConfig: (config) => window.api.localServer.setConfig(config),
+      runStep: (step) => window.api.localServer.runStep(step),
+      cancelJob: () => window.api.localServer.cancelJob(),
+      installWsl: () => window.api.localServer.installWsl(),
+      installDistro: (name) => window.api.localServer.installDistro(name),
+      openTerminal: () => window.api.localServer.openTerminal(),
+      subscribe: (cb) => window.api.localServer.subscribe(cb),
+    },
+
     getDisplayBackend: async () => {
       return window.api.getDisplayBackend().catch(() => null)
     },