feat(app): UDS bridge (channel/invoke/emit) + xterm.js terminal, M0 e2e works

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/src/socketBridge.ts

@@ -0,0 +1,75 @@
+import { invoke, Channel } from "@tauri-apps/api/core";
+import { listen } from "@tauri-apps/api/event";
+
+export interface WorkspaceStatus {
+  workspace_id: string;
+  path: string;
+  surfaces: string[];
+}
+
+export async function openWorkspace(path: string): Promise<string> {
+  const data = await invoke<{ workspace_id: string }>("open", { path });
+  return data.workspace_id;
+}
+
+export async function newSurface(
+  workspaceId: string,
+  cols: number,
+  rows: number,
+  command?: string,
+  args: string[] = []
+): Promise<string> {
+  const data = await invoke<{ surface_id: string }>("new_surface", {
+    workspaceId,
+    command: command ?? null,
+    args,
+    cols,
+    rows,
+  });
+  return data.surface_id;
+}
+
+export async function sendInput(surfaceId: string, data: Uint8Array): Promise<void> {
+  await invoke("input", { surfaceId, data: Array.from(data) });
+}
+
+export async function resizeSurface(surfaceId: string, cols: number, rows: number): Promise<void> {
+  await invoke("resize", { surfaceId, cols, rows });
+}
+
+export interface AttachResult {
+  snapshot: string;
+  cols: number;
+  rows: number;
+}
+
+export async function attachSurface(
+  surfaceId: string,
+  onOutput: (bytes: Uint8Array) => void
+): Promise<AttachResult> {
+  const channel = new Channel<number[]>();
+  channel.onmessage = (msg) => onOutput(new Uint8Array(msg));
+  return await invoke<AttachResult>("attach", { surfaceId, onOutput: channel });
+}
+
+export async function detachSurface(surfaceId: string): Promise<void> {
+  await invoke("detach", { surfaceId });
+}
+
+export async function getStatus(): Promise<WorkspaceStatus[]> {
+  const data = await invoke<{ workspaces: WorkspaceStatus[] }>("status");
+  return data.workspaces;
+}
+
+export type DaemonEvt =
+  | { evt: "exit"; data: { surface_id: string; code: number } }
+  | { evt: "surface_created"; data: { surface_id: string; workspace_id: string } }
+  | { evt: "surface_closed"; data: { surface_id: string } };
+
+export function onDaemonEvent(handler: (evt: DaemonEvt) => void): Promise<() => void> {
+  return listen<DaemonEvt>("spacesh:evt", (e) => handler(e.payload));
+}
+
+export function onDaemonRawEvent(name: string, handler: () => void): Promise<() => void> {
+  return listen(name, () => handler());
+}