Initial scaffold: @ng-eventually/client — SDK-shaped polyfill over NextGraph

Generic polyfill layer that makes a single NextGraph broker behave like the
not-yet-shipped multi-user NextGraph (emulated capabilities + inbox). Zero app domain.

@ng-eventually/client exposes an SDK-identical surface (ng, useShape, inbox); the
polyfill bootstrap (configure + capability helpers) is isolated under /polyfill, so
the main entry stays a drop-in for @ng-org/web|orm. The real SDK is injected at
configure() (no hard import → build-alias safe + testable).

Scaffold: NextGraph wiring stubbed with TODO; capability helpers implemented and
unit-tested (4 tests, typecheck clean). The global-index curator is deferred — in
NextGraph apps/services are mono-user with no global data.

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

packages/client/package.json

@@ -0,0 +1,23 @@
+{
+  "name": "@ng-eventually/client",
+  "version": "0.0.0",
+  "type": "module",
+  "description": "SDK-identical client wrapper over @ng-org/web + @ng-org/orm with emulated capabilities and inbox. Drop-in; remove at migration.",
+  "main": "./src/index.ts",
+  "types": "./src/index.ts",
+  "exports": {
+    ".": "./src/index.ts",
+    "./polyfill": "./src/polyfill.ts"
+  },
+  "peerDependencies": {
+    "@ng-org/web": "*",
+    "@ng-org/orm": "*"
+  },
+  "peerDependenciesMeta": {
+    "@ng-org/web": { "optional": true },
+    "@ng-org/orm": { "optional": true }
+  },
+  "scripts": {
+    "test": "bun test"
+  }
+}