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@@ -8,6 +8,6 @@ Clause-②: no
 
 - **What was wrong.** The purge looked up a bare `driver` service, a name no kernel registers (drivers register as `driver.<name>`), so it refused everywhere. Behind that it matched seed records by `id`, which seed records rarely carry: the CRM example's 28 records key by `name`, `email` and `subject`. It also deleted through the driver, past every engine hook.
 - **What it does now.** It deletes through the ObjectQL engine, so lifecycle hooks and the audit trail run, under the posture the seed was written with (record-change automation suppressed). Rows are matched by each dataset's `externalId`, the key the install and the reseed upsert by. A row whose key no seed record declares is never touched. Children are deleted before parents, in the reverse of the seed loader's own dependency order.
-- **Scope.** Under an organization wall the purge removes only the seed rows of the caller's active organization, the scope the install and the reseed seed into. A session with no active organization is answered `400 RESEED_SKIPPED` (`multi-tenant-no-active-org`), the way reseed answers it. Without a wall the deployment is one tenant, and the match is table-wide, as the install's own match is.
+- **Scope.** Under an organization wall the purge removes only the seed rows of the caller's active organization, the scope the install and the reseed seed into. A session with no active organization is refused with `403 PERMISSION_DENIED` and a message naming the missing active organization, the way reseed refuses it. Without a wall the deployment is one tenant, and the match is table-wide, as the install's own match is.
 - **The response keeps its shape**, `{ manifestId, deleted, skipped, errors, withSampleData }`. `skipped` counts seed records no row carries (already deleted). `errors` counts records that could not be purged, each with its reason in the server log: a delete the engine refused (for example, a user's row still requires the seed row as its parent), a key that more than one row carries, or a seed record with no key value.
 - A runtime with no data engine or no metadata service still answers `500 DRIVER_UNAVAILABLE`, now naming what is missing.
@@ -0,0 +1,12 @@
+---
+"@objectstack/cloud-connection": patch
+---
+
+Under an organization wall, the install-local sample-data doors now refuse a session with no active organization, and the refusal names what is missing (ADR-0123 D2 / D4). Before, they skipped quietly.
+
+Clause-②: no
+
+- **Reseed and purge.** `POST /api/v1/marketplace/install-local/:manifestId/reseed-sample-data` and `…/purge-sample-data` answer `403 PERMISSION_DENIED`, with a message saying the session has no active organization and that one must be joined or selected. Before, the reseed answered `400 RESEED_SKIPPED` (`multi-tenant-no-active-org`); the purge, which starts deleting in this same release, refuses the same way from the start. Reseed's other declines are unchanged and still answer `400 RESEED_SKIPPED`: a package with no seed datasets, a runtime with no data engine or metadata service, and a seed run that threw.
+- **Install.** `POST /api/v1/marketplace/install-local` still installs the package, which is environment-wide. Its `seeded` block now reads `{ mode: "refused", reason: "…" }`, where `reason` names the missing active organization and says to select one and then reseed. Before, it read `{ mode: "skipped", reason: "multi-tenant-no-active-org" }`.
+- **No organization is guessed.** The active-organization read no longer falls back to the user's first membership. ADR-0123 D1 makes "authenticated, with no active organization" a declared state. A guess would write into an organization the caller never chose. The fallback read an object no package defines, so it never resolved anything.
+- **Unchanged.** A session with an active organization seeds, reseeds and purges in that organization, as before. Without a wall (`single` posture), no organization is read, and the three doors act table-wide.
@@ -0,0 +1,268 @@
+// Copyright (c) 2026 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * [ADR-0123 D1 / D2 / D4] A walled session with NO active organization, at the
+ * three install-local doors that seed or purge sample data.
+ *
+ * ## What was measured before this file
+ *
+ * On a posture-only (walled) boot, a signed-in admin whose session carried no
+ * `activeOrganizationId`, though their user held a `sys_member` row:
+ *
+ *   POST …/install-local                          -> 200, seeded {mode: "skipped", reason: "multi-tenant-no-active-org"}
+ *   POST …/install-local/:id/reseed-sample-data   -> 400 RESEED_SKIPPED "Reseed did not run: multi-tenant-no-active-org"
+ *   POST …/install-local/:id/purge-sample-data    -> 400 RESEED_SKIPPED
+ *
+ * and the resolver's "first membership" fallback read an object no package
+ * defines, so it threw and was swallowed. ADR-0123 already rules on this state:
+ * D1 makes it legal and named, so no subsystem guesses an organization for it;
+ * D2 refuses a tenant-scoped write loudly, with the catalog's
+ * `PERMISSION_DENIED` / 403; D4 says the refusal names the missing active
+ * organization.
+ *
+ * ## What this file pins
+ *
+ *   1. walled, no active organization, the user a member of TWO organizations:
+ *      the install registers the package and reports `seeded {mode: "refused"}`
+ *      with the sentence in `reason`; the reseed and the purge answer the 403
+ *      envelope; no seed run starts and no organization is guessed;
+ *   2. walled, an active organization: all three doors act in it, as before;
+ *   3. unwalled (`single`): the active-organization read is never consulted.
+ *
+ * The membership rows are served by the store on purpose: a resolver that
+ * guessed from them (under either object name the platform has spelled) would
+ * seed into one of the two organizations, and case 1 would go red.
+ */
+
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
+import { mkdtempSync, rmSync } from 'node:fs';
+import { join } from 'node:path';
+import { tmpdir } from 'node:os';
+
+let loadCalls: any[] = [];
+
+vi.mock('@objectstack/runtime', () => ({
+    SeedLoaderService: class {
+        async load(request: any) {
+            loadCalls.push(request);
+            return { summary: { totalInserted: 2, totalUpdated: 0, totalSkipped: 0 }, errors: [] };
+        }
+        async buildDependencyGraph(objects: string[]) {
+            return { insertOrder: objects, nodes: objects.map((object) => ({ object, dependsOn: [], references: [] })) };
+        }
+    },
+    recordSeedOutcome: vi.fn(),
+}));
+// Only the seed-request parse is stubbed; every other export stays the real one,
+// because `@objectstack/core` reads `@objectstack/spec/data` values at module load.
+vi.mock('@objectstack/spec/data', async (importOriginal) => ({
+    ...(await importOriginal<typeof import('@objectstack/spec/data')>()),
+    SeedLoaderRequestSchema: { parse: (x: any) => x },
+}));
+
+import { MarketplaceInstallLocalPlugin } from './marketplace-install-local-plugin.js';
+import { INSTALLER_USER_ID, withInstallerGrants } from './install-local-principal.fixtures.js';
+import { LocalManifestSource } from './local-manifest-source.js';
+
+type Handler = (c: any) => Promise<any>;
+
+const BASE = '/api/v1/marketplace/install-local';
+const MANIFEST = {
+    id: 'app.test.noorg',
+    version: '1.0.0',
+    objects: [{ name: 'noorg_x', fields: { name: { type: 'text' } } }],
+    data: [{ object: 'noorg_x', externalId: 'name', records: [{ name: 'a' }, { name: 'b' }] }],
+};
+
+/** The installer is a member of two organizations; the store says so under both spellings. */
+const MEMBERSHIPS = [
+    { id: 'mem_a', organization_id: 'org_a', user_id: INSTALLER_USER_ID, role: 'owner' },
+    { id: 'mem_b', organization_id: 'org_b', user_id: INSTALLER_USER_ID, role: 'owner' },
+];
+
+function makeC(body: unknown, manifestId?: string) {
+    return {
+        req: {
+            url: `http://localhost:3000${BASE}`,
+            raw: new Request('http://localhost:3000/x'),
+            json: async () => body,
+            param: (k: string) => (k === 'manifestId' ? manifestId : undefined),
+            header: () => undefined,
+        },
+        json: vi.fn((payload: any, status?: number) => ({ payload, status: status ?? 200 })),
+    };
+}
+
+let dir: string;
+beforeEach(() => {
+    dir = mkdtempSync(join(tmpdir(), 'mil-noorg-'));
+    loadCalls = [];
+});
+afterEach(() => { rmSync(dir, { recursive: true, force: true }); vi.restoreAllMocks(); });
+
+/**
+ * Boot the real plugin. `posture` is the `tenancy` service's posture in force;
+ * `activeOrg` what the session's `activeOrganizationId` says (absent: none).
+ */
+async function boot(opts: { posture: 'single' | 'isolated'; activeOrg?: string }) {
+    const routes = new Map<string, Handler>();
+    const rawApp = {
+        get: (p: string, h: Handler) => routes.set(`GET ${p}`, h),
+        post: (p: string, h: Handler) => routes.set(`POST ${p}`, h),
+        delete: (p: string, h: Handler) => routes.set(`DELETE ${p}`, h),
+    };
+    const reads: Array<{ object: string; query: any }> = [];
+    const granted = withInstallerGrants({
+        syncSchemas: async () => undefined,
+        find: async (object: string, query?: any) => { reads.push({ object, query }); return []; },
+    });
+    const objectql = {
+        ...granted,
+        find: async (object: string, query?: any) => {
+            if (object === 'sys_member' || object === 'sys_organization_member') {
+                reads.push({ object, query });
+                return MEMBERSHIPS.map((m) => ({ ...m }));
+            }
+            return granted.find(object, query);
+        },
+    };
+    const register = vi.fn();
+    const services: Record<string, unknown> = {
+        manifest: { register },
+        auth: {
+            api: {
+                getSession: async () => ({
+                    user: { id: INSTALLER_USER_ID },
+                    session: opts.activeOrg ? { activeOrganizationId: opts.activeOrg } : {},
+                }),
+            },
+        },
+        objectql,
+        metadata: {},
+        tenancy: { posture: opts.posture },
+    };
+    const hooks = new Map<string, any>();
+    const ctx = {
+        hook: (e: string, h: any) => hooks.set(e, h),
+        getService: (name: string) => {
+            if (name === 'http-server') return { getRawApp: () => rawApp };
+            const svc = services[name];
+            if (svc === undefined) throw new Error(`no ${name}`);
+            return svc;
+        },
+        logger: { info: vi.fn(), warn: vi.fn(), error: vi.fn(), debug: vi.fn() },
+    };
+    const plugin = new MarketplaceInstallLocalPlugin({ controlPlaneUrl: 'off', storageDir: dir });
+    const resolveActiveOrgId = vi.spyOn(plugin as any, 'resolveActiveOrgId');
+    await plugin.start(ctx as any);
+    await hooks.get('kernel:ready')?.();
+    return {
+        register,
+        reads,
+        resolveActiveOrgId,
+        install: () => routes.get(`POST ${BASE}`)!(makeC({ manifest: MANIFEST })),
+        reseed: () => routes.get(`POST ${BASE}/:manifestId/reseed-sample-data`)!(makeC({}, MANIFEST.id)),
+        purge: () => routes.get(`POST ${BASE}/:manifestId/purge-sample-data`)!(makeC({}, MANIFEST.id)),
+    };
+}
+
+const ledgerEntry = () => new LocalManifestSource(dir).read(MANIFEST.id).entry;
+
+describe('walled, no active organization — refused at every sample-data door, and no organization is guessed', () => {
+    it('install: the package registers, and `seeded` reports the refusal instead of seeding', async () => {
+        const m = await boot({ posture: 'isolated' });
+        const res = await m.install();
+
+        expect(res.status).toBe(200);
+        expect(res.payload.success).toBe(true);
+        expect(m.register).toHaveBeenCalled();
+        expect(ledgerEntry()?.manifestId).toBe(MANIFEST.id);
+        expect(Object.keys(res.payload.data.seeded).sort()).toEqual(['mode', 'reason']);
+        expect(res.payload.data.seeded.mode).toBe('refused');
+        expect(res.payload.data.seeded.reason).toContain('this session has no active organization');
+        expect(loadCalls).toHaveLength(0);
+        expect(ledgerEntry()?.withSampleData).not.toBe(true);
+    });
+
+    it('reseed: 403 PERMISSION_DENIED naming the missing active organization, and no seed run', async () => {
+        const m = await boot({ posture: 'isolated' });
+        await m.install();
+        const res = await m.reseed();
+
+        expect(res.status).toBe(403);
+        expect(res.payload.success).toBe(false);
+        expect(res.payload.error.code).toBe('PERMISSION_DENIED');
+        expect(res.payload.error.message).toContain('this session has no active organization');
+        expect(loadCalls).toHaveLength(0);
+        expect(ledgerEntry()?.withSampleData).not.toBe(true);
+    });
+
+    it('purge: 403 PERMISSION_DENIED naming the missing active organization, and no seed object is read', async () => {
+        const m = await boot({ posture: 'isolated' });
+        await m.install();
+        const res = await m.purge();
+
+        expect(res.status).toBe(403);
+        expect(res.payload.success).toBe(false);
+        expect(res.payload.error.code).toBe('PERMISSION_DENIED');
+        expect(res.payload.error.message).toContain('this session has no active organization');
+        expect(m.reads.filter((r) => r.object === 'noorg_x')).toEqual([]);
+        expect(ledgerEntry()?.sampleDataPurged).toBeUndefined();
+    });
+});
+
+describe('walled, an active organization — all three doors act in it, as before', () => {
+    it('install seeds inline into the active organization', async () => {
+        const m = await boot({ posture: 'isolated', activeOrg: 'org_b' });
+        const res = await m.install();
+
+        expect(res.status).toBe(200);
+        expect(res.payload.data.seeded).toMatchObject({ mode: 'inline', inserted: 2 });
+        expect(loadCalls).toHaveLength(1);
+        expect(loadCalls[0].config.organizationId).toBe('org_b');
+    });
+
+    it('reseed seeds into the active organization', async () => {
+        const m = await boot({ posture: 'isolated', activeOrg: 'org_b' });
+        await m.install();
+        const res = await m.reseed();
+
+        expect(res.status).toBe(200);
+        expect(res.payload.data).toMatchObject({ inserted: 2, withSampleData: true });
+        expect(loadCalls).toHaveLength(2);
+        expect(loadCalls[1].config.organizationId).toBe('org_b');
+    });
+
+    it('purge reads the seed object in the active organization only', async () => {
+        const m = await boot({ posture: 'isolated', activeOrg: 'org_b' });
+        await m.install();
+        const res = await m.purge();
+
+        expect(res.status).toBe(200);
+        expect(res.payload.success).toBe(true);
+        const seedReads = m.reads.filter((r) => r.object === 'noorg_x');
+        expect(seedReads).toHaveLength(1);
+        expect(seedReads[0].query.where).toEqual({ organization_id: 'org_b' });
+    });
+});
+
+describe('unwalled (`single`) — the active-organization read is never consulted', () => {
+    it('install, reseed and purge act table-wide with no organization, and never ask for one', async () => {
+        const m = await boot({ posture: 'single' });
+
+        const install = await m.install();
+        expect(install.status).toBe(200);
+        expect(install.payload.data.seeded).toMatchObject({ mode: 'inline', inserted: 2 });
+        const reseed = await m.reseed();
+        expect(reseed.status).toBe(200);
+        const purge = await m.purge();
+        expect(purge.status).toBe(200);
+
+        expect(loadCalls).toHaveLength(2);
+        for (const call of loadCalls) expect(call.config.organizationId).toBeUndefined();
+        const seedReads = m.reads.filter((r) => r.object === 'noorg_x');
+        expect(seedReads).toHaveLength(1);
+        expect(seedReads[0].query.where).toBeUndefined();
+        expect(m.resolveActiveOrgId).not.toHaveBeenCalled();
+    });
+});