Rename Foundry handoffs to tasks (#239)

* Restore foundry onboarding stack

* Consolidate foundry rename

* Create foundry tasks without prompts

* Rename Foundry handoffs to tasks

foundry/packages/backend/src/config/backend.ts

@@ -0,0 +1,22 @@
+import { existsSync, mkdirSync, readFileSync, writeFileSync } from "node:fs";
+import { dirname } from "node:path";
+import { homedir } from "node:os";
+import * as toml from "@iarna/toml";
+import { ConfigSchema, type AppConfig } from "@sandbox-agent/foundry-shared";
+
+export const CONFIG_PATH = `${homedir()}/.config/foundry/config.toml`;
+
+export function loadConfig(path = CONFIG_PATH): AppConfig {
+  if (!existsSync(path)) {
+    return ConfigSchema.parse({});
+  }
+
+  const raw = readFileSync(path, "utf8");
+  const parsed = toml.parse(raw) as unknown;
+  return ConfigSchema.parse(parsed);
+}
+
+export function saveConfig(config: AppConfig, path = CONFIG_PATH): void {
+  mkdirSync(dirname(path), { recursive: true });
+  writeFileSync(path, toml.stringify(config), "utf8");
+}

foundry/packages/backend/src/config/workspace.ts

@@ -0,0 +1,13 @@
+import type { AppConfig } from "@sandbox-agent/foundry-shared";
+
+export function defaultWorkspace(config: AppConfig): string {
+  const ws = config.workspace.default.trim();
+  return ws.length > 0 ? ws : "default";
+}
+
+export function resolveWorkspace(flagWorkspace: string | undefined, config: AppConfig): string {
+  if (flagWorkspace && flagWorkspace.trim().length > 0) {
+    return flagWorkspace.trim();
+  }
+  return defaultWorkspace(config);
+}