init: arcadia-admin — admin webapp for arcadia-core, cloned from vibespace

Initial commit. Spun up via the docs/STARTER.md recipe: cp from vibespace,
reset git, rename package, set brand to "Arcadia Admin" with Shield icon
in app/lib/identity.ts.

Inherits the full Crema sibling-lib wiring including @crema/arcadia-client
(typed HTTP + Phoenix Channels realtime against arcadia-core) and
@crema/arcadia-auth-ui (login/signup/password-reset/2FA forms). The /login
route already renders <LoginForm>; <ArcadiaProvider> in app/root.tsx reads
VITE_ARCADIA_URL (default localhost:4000) and VITE_ARCADIA_TENANT (default
"default").

CLAUDE.md and README rewritten to frame this as the admin app for
arcadia-core. docs/STARTER.md removed — arcadia-admin is a leaf consumer,
not a downstream starter.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

app/lib/resources.test.ts

@@ -0,0 +1,32 @@
+import { describe, expect, it, beforeEach } from "vitest"
+
+import {
+  createResource,
+  deleteResource,
+  listResources,
+  updateResource,
+} from "./resources"
+
+describe("resources", () => {
+  beforeEach(() => {
+    localStorage.clear()
+  })
+
+  it("creates, updates, and deletes", () => {
+    expect(listResources()).toEqual([])
+    const r = createResource({ name: "Test", owner: "Atlas" })
+    expect(r.status).toBe("active")
+    expect(listResources()).toHaveLength(1)
+
+    const updated = updateResource(r.id, { status: "paused" })
+    expect(updated?.status).toBe("paused")
+    expect(updated?.updatedAt).toBeGreaterThanOrEqual(r.updatedAt)
+
+    deleteResource(r.id)
+    expect(listResources()).toEqual([])
+  })
+
+  it("ignores updates for unknown ids", () => {
+    expect(updateResource("missing", { name: "x" })).toBeNull()
+  })
+})