prepare for client/server split

packages/base/.gitignore

@@ -0,0 +1,2 @@
+/node_modules/
+/dist/

packages/base/package.json

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+{
+  "name": "@plainidx/base",
+  "version": "1.0.0",
+  "type": "module",
+  "main": "dist/exports.js",
+  "files": [
+    "dist"
+  ],
+  "scripts": {
+    "build": "tsc --build"
+  },
+  "devDependencies": {
+    "@plainidx/configs": "workspace:*",
+    "typescript": "^5.7.2"
+  },
+  "dependencies": {
+    "nanoid": "^5.0.9",
+    "zod": "^3.24.0"
+  }
+}

packages/base/src/exports.ts

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+export { z } from 'zod';
+export {
+  type Manifest,
+  type ManifestBackendAction,
+  type ManifestBackendActions,
+  type ManifestBackend,
+  type ManifestFrontend,
+} from './manifest/manifest.js';

packages/base/src/manifest/manifest.ts

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+import { ZodSchema } from 'zod';
+
+type ManifestBackendAction = {
+  input: ZodSchema;
+  output: ZodSchema;
+};
+
+type ManifestBackendActions = Record<string, ManifestBackendAction>;
+
+type ManifestBackend = {
+  main: string;
+  actions: ManifestBackendActions;
+};
+
+type ManifestFrontend = {
+  main: string;
+};
+
+type Manifest = {
+  id: string;
+  name: string;
+  version: string;
+  description?: string;
+  icon?: string;
+  config: ZodSchema;
+  frontend?: ManifestFrontend;
+  backend?: ManifestBackend;
+};
+
+export {
+  type Manifest,
+  type ManifestBackendAction,
+  type ManifestBackendActions,
+  type ManifestBackend,
+  type ManifestFrontend,
+};

packages/base/tsconfig.json

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+{
+  "extends": "@plainidx/configs/tsconfig.json",
+  "compilerOptions": {
+    "outDir": "dist"
+  },
+  "include": [
+    "src"
+  ]
+}