@@ -0,0 +1,15 @@
+---
+'@objectstack/runtime': patch
+---
+
+`GET /api/v1/meta/<type>` now lists an artifact's items in their converted shape, the shape `GET /api/v1/meta/<type>/<name>` serves
+
+Clause-②: no
+
+A compiled artifact built before a spec retirement still carries the retired key, and the ADR-0087 forward conversion rewrites it when the artifact boots. The artifact door converted it, so the item read served the converted copy. `AppPlugin` handed the RAW bundle to the engine registry, which is what the list read, `getMetaItemsForExecution` and the email template loader read. So the list served the retired key with `_diagnostics.valid: false`, and a reader of the list (the email loader is one) was handed an item the current schema refuses. Measured with `os dev -a dist/objectstack.json --fresh` on an artifact that declares no `engines.protocol` and carries a dashboard with `refreshInterval: 300`: the item read served `refreshIntervalSeconds: 300`, valid, and the list served `refreshInterval: 300`, invalid.
+
+`AppPlugin` now runs one forward conversion per boot, after the protocol handshake, over the same definition its security registrar already converted. The registry and that registrar both register from its result. An artifact authored in the current spellings registers exactly what it did before, because a conversion that changes nothing returns its input.
+
+The security seeders read the same registry copy first, so a boot with an engine now seeds what the conversion produced. Measured on `createStandaloneStack` with a `>=17.1.0` artifact: a sharing rule declared with the legacy recipient type `role` is now seeded as `position`, where it used to be skipped as an unmappable recipient. A seeded permission set no longer stores the retired `allowRestore` / `allowPurge` or the row-level-security `priority`.
+
+One case is unchanged: a bundle that carries `packages[]` still hands its package bodies over as authored. No conversion reaches those bodies, at the artifact door either.
@@ -0,0 +1,314 @@
+// Copyright (c) 2026 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * #22994: `AppPlugin` registers the ADR-0087 forward-converted copy of EVERY
+ * collection, not only the security ones (#12844), and it converts once.
+ *
+ * The seam is `AppPlugin.init()`'s `manifest.register(...)`. It decomposes the
+ * bundle into the ObjectQL registry over `METADATA_ARRAY_KEYS`, and that
+ * registry is the code layer of the flattened list, the list
+ * `GET /meta/<type>` serves and that `getMetaItemsForExecution` hands to the
+ * email loader. It used to be handed the RAW bundle. On the artifact boot
+ * (`createStandaloneStack`, the composition `os dev -a` runs) the door,
+ * `MetadataPlugin`, registers the converted copy into the metadata service, so
+ * `GET /meta/<type>/NAME` served that copy while the list served the raw one.
+ * Measured before this change, on `origin/main`, for the artifact below:
+ *
+ *   list  dashboard/ops_board  refreshInterval: 300         _diagnostics.valid: false
+ *   item  dashboard/ops_board  refreshIntervalSeconds: 300  _diagnostics.valid: true
+ *   execution face             refreshInterval: 300
+ *
+ * The second type is `dashboard`, converted by the major-18 retired entry
+ * `dashboard-refresh-interval-to-refresh-interval-seconds` (retiredAfter
+ * 17.3.0). It sits beside `emailTemplates`, the card's own type. That type has
+ * no conversion on this tree: its `category` / `isSystem` retirement is a
+ * separate change. So its legs below assert the contract (the registry
+ * holds the conversion's OUTPUT, and that output passes the email loader's own
+ * parse). That contract has no retired key to bite on here, and it does the
+ * day a retirement of that type lands.
+ *
+ * Out of scope, on purpose: the PARSE axis. The door strict-parses (schema
+ * defaults, ADR-0122 transforms), and the registry copy does not. So the item
+ * read can carry keys the listed copy lacks (an email template's
+ * `variables: []` / `active: true`). The list pins below therefore assert
+ * "every key the list serves is the key the item read serves", never "the two
+ * are one document". Unifying them is a route-ownership question (#12892),
+ * not this conversion.
+ */
+
+import { describe, it, expect, beforeAll, afterAll, vi } from 'vitest';
+import { mkdtempSync, rmSync, writeFileSync } from 'node:fs';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { applyArtifactForwardConversions } from '@objectstack/metadata-core';
+import { stripReadDecorations } from '@objectstack/spec/kernel';
+import { EmailTemplateDefinitionSchema } from '@objectstack/spec/system';
+import { Runtime } from './runtime.js';
+import { AppPlugin } from './app-plugin.js';
+import { createStandaloneStack } from './standalone-stack.js';
+
+// [#10126] Pay the first transform of these dist-resolved workspace deps at
+// MODULE LOAD: the factory and the kernel boot below import them lazily, inside
+// a clocked hook (`scripts/check-test-source-alias.mjs`, the clocked-window rule).
+import '@objectstack/metadata';
+import '@objectstack/objectql';
+import '@objectstack/service-datasource';
+
+const APP_ID = 'com.test.issue-22994';
+const STAMPS = { _packageId: APP_ID, _packageVersion: '1.0.0', _provenance: 'package' } as const;
+
+/** A dashboard carrying the retired `refreshInterval` spelling. */
+const RETIRED_DASHBOARD = { name: 'ops_board', label: 'Ops Board', widgets: [], refreshInterval: 300 };
+/** What a 17.x parse emitted for an email template: both defaulted keys present. */
+const EMAIL_TEMPLATE = {
+    name: 'probe.welcome',
+    label: 'Welcome',
+    locale: 'en-US',
+    subject: 'Welcome',
+    bodyHtml: '<p>Hi</p>',
+    category: 'custom',
+    isSystem: false,
+};
+
+/**
+ * The card's reproduction shape: an UNDECLARED-engines artifact, so the
+ * window opens (`converted-undeclared`) at the door and here alike.
+ */
+const RETIRED_ARTIFACT = {
+    manifest: { id: APP_ID, name: 'Converted Collections Probe', type: 'app', version: '1.0.0' },
+    dashboards: [RETIRED_DASHBOARD],
+    emailTemplates: [EMAIL_TEMPLATE],
+};
+
+/** The CONTROL: the same app authored in the current spellings. Nothing to convert. */
+const CURRENT_DASHBOARD = { name: 'ops_board', label: 'Ops Board', widgets: [], refreshIntervalSeconds: 300 };
+const CURRENT_EMAIL_TEMPLATE = { name: 'probe.welcome', label: 'Welcome', locale: 'en-US', subject: 'Welcome', bodyHtml: '<p>Hi</p>' };
+const CURRENT_ARTIFACT = {
+    manifest: { id: APP_ID, name: 'Converted Collections Probe', type: 'app', version: '1.0.0' },
+    dashboards: [CURRENT_DASHBOARD],
+    emailTemplates: [CURRENT_EMAIL_TEMPLATE],
+};
+
+const BOOT_TIMEOUT = 120_000;
+
+/** Fresh bytes per reader: readers stamp and normalize what they are handed. */
+const copy = <T>(value: T): T => JSON.parse(JSON.stringify(value));
+
+/** `item` minus the read-side `_diagnostics` badge, which only the served reads add. */
+function undiagnosed(item: Record<string, unknown>): Record<string, unknown> {
+    const { _diagnostics: _ignored, ...rest } = item;
+    return rest;
+}
+
+/** The authored item as the conversion rewrites it: the policy function's own answer. */
+function convertedAuthored(collection: 'dashboards' | 'emailTemplates', name: string): Record<string, unknown> {
+    const result = applyArtifactForwardConversions(copy(RETIRED_ARTIFACT) as Record<string, unknown>);
+    const items = (result.definition as Record<string, Array<Record<string, unknown>>>)[collection];
+    const item = items.find((i) => i.name === name);
+    if (!item) throw new Error(`the conversion lost ${collection}/${name}`);
+    return item;
+}
+
+interface BootedArtifact {
+    kernel: any;
+    dir: string;
+}
+
+/** Boot the card's composition over `artifact`, the way `os dev -a` composes it. */
+async function bootArtifact(tag: string, artifact: unknown): Promise<BootedArtifact> {
+    const dir = mkdtempSync(join(tmpdir(), `os-22994-${tag}-`));
+    const artifactPath = join(dir, 'objectstack.json');
+    writeFileSync(artifactPath, JSON.stringify(artifact), 'utf-8');
+    const stack = await createStandaloneStack({
+        artifactPath,
+        projectRoot: dir,
+        databaseUrl: ':memory:',
+        skipSeedData: true,
+        runPlatformMigrations: false,
+    });
+    const runtime = new Runtime({ cluster: false });
+    const kernel = runtime.getKernel();
+    for (const p of stack.plugins) await kernel.use(p as any);
+    await kernel.bootstrap();
+    return { kernel, dir };
+}
+
+async function teardown(booted: BootedArtifact | undefined): Promise<void> {
+    if (!booted) return;
+    try { await booted.kernel.shutdown(); } catch { /* noop */ }
+    rmSync(booted.dir, { recursive: true, force: true });
+}
+
+/** The one item named `name` in the list `getMetaItems({ type })` serves, the `GET /meta/<type>` read. */
+async function listed(kernel: any, type: string, name: string): Promise<Record<string, unknown>> {
+    const answer = await kernel.getService('protocol').getMetaItems({ type });
+    const hits = (answer?.items as Array<Record<string, unknown>> | undefined)?.filter((i) => i?.name === name) ?? [];
+    expect(hits, `GET /meta/${type} must list exactly one ${name}`).toHaveLength(1);
+    return hits[0]!;
+}
+
+/** The item `getMetaItem({ type, name })` serves, the `GET /meta/<type>/NAME` read. */
+async function served(kernel: any, type: string, name: string): Promise<Record<string, unknown>> {
+    const answer = await kernel.getService('protocol').getMetaItem({ type, name });
+    expect(answer?.item, `GET /meta/${type}/${name} must serve an item`).toBeDefined();
+    return answer.item as Record<string, unknown>;
+}
+
+/** The one item named `name` on the execution face, the list the email loader reads. */
+async function executed(kernel: any, type: string, name: string): Promise<Record<string, unknown>> {
+    const answer = await kernel.getService('protocol').getMetaItemsForExecution({ type });
+    const hits = (answer?.items as Array<Record<string, unknown>> | undefined)?.filter((i) => i?.name === name) ?? [];
+    expect(hits, `the execution face must carry exactly one ${type}/${name}`).toHaveLength(1);
+    return hits[0]!;
+}
+
+describe('#22994: the artifact boot lists the converted copy the item read serves', () => {
+    let booted: BootedArtifact | undefined;
+
+    beforeAll(async () => {
+        booted = await bootArtifact('retired', RETIRED_ARTIFACT);
+    }, BOOT_TIMEOUT);
+
+    afterAll(async () => {
+        await teardown(booted);
+    });
+
+    it('dashboard: GET /meta/dashboard lists the converted copy, valid, the very document GET /meta/dashboard/NAME serves', async () => {
+        const list = await listed(booted!.kernel, 'dashboard', 'ops_board');
+        const item = await served(booted!.kernel, 'dashboard', 'ops_board');
+
+        expect(list.refreshIntervalSeconds).toBe(300);
+        expect(list).not.toHaveProperty('refreshInterval');
+        expect(list._diagnostics).toEqual({ valid: true });
+        // The dashboard schema adds no default here, so the two reads are one
+        // document. That is the card's whole defect, stated directly.
+        expect(undiagnosed(list)).toEqual(undiagnosed(item));
+    });
+
+    it('dashboard: the execution face carries the converted copy, the conversion\'s own output', async () => {
+        const exec = await executed(booted!.kernel, 'dashboard', 'ops_board');
+        expect(exec).toEqual({ ...convertedAuthored('dashboards', 'ops_board'), ...STAMPS });
+    });
+
+    it('email_template: every key the list serves is the key the item read serves, and the list is valid', async () => {
+        const list = await listed(booted!.kernel, 'email_template', 'probe.welcome');
+        const item = await served(booted!.kernel, 'email_template', 'probe.welcome');
+
+        expect(list._diagnostics).toEqual({ valid: true });
+        // Subset, not equality: the item read is the door's strict-parsed copy
+        // and carries schema defaults the registry copy never had (the parse
+        // axis, #12892). A retired key the conversion strips is in neither,
+        // and one the registry kept would fail here.
+        for (const [key, value] of Object.entries(undiagnosed(list))) {
+            expect(item[key], `GET /meta/email_template/probe.welcome serves ${key}`).toEqual(value);
+        }
+    });
+
+    it('email_template: the email loader is handed the conversion\'s output, and it parses as the loader parses it', async () => {
+        const exec = await executed(booted!.kernel, 'email_template', 'probe.welcome');
+        expect(exec).toEqual({ ...convertedAuthored('emailTemplates', 'probe.welcome'), ...STAMPS });
+        // `createRegistryEmailTemplateLoader`'s own refusal test, verbatim:
+        // `EmailTemplateDefinitionSchema.safeParse(stripReadDecorations(item))`,
+        // which refuses with "is not a valid email template, so it cannot be sent".
+        const parsed = EmailTemplateDefinitionSchema.safeParse(stripReadDecorations(exec));
+        expect(parsed.success, parsed.success ? '' : JSON.stringify(parsed.error.issues)).toBe(true);
+    });
+});
+
+describe('#22994 control: an artifact authored in the current spellings registers exactly what it authored', () => {
+    let booted: BootedArtifact | undefined;
+
+    beforeAll(async () => {
+        booted = await bootArtifact('current', CURRENT_ARTIFACT);
+    }, BOOT_TIMEOUT);
+
+    afterAll(async () => {
+        await teardown(booted);
+    });
+
+    it('the registry holds the authored items, stamped, and nothing rewritten', () => {
+        const registry = booted!.kernel.getService('objectql').registry;
+        const pick = (type: string, name: string) => registry.listItems(type).filter((i: any) => i?.name === name);
+        expect(pick('dashboard', 'ops_board')).toEqual([{ ...CURRENT_DASHBOARD, ...STAMPS }]);
+        expect(pick('email_template', 'probe.welcome')).toEqual([{ ...CURRENT_EMAIL_TEMPLATE, ...STAMPS }]);
+    });
+});
+
+/** A context whose `manifest` service captures the payload and whose metadata service captures writes. */
+function capturingCtx() {
+    const payloads: any[] = [];
+    const registrations: Array<{ type: string; name: string; item: any }> = [];
+    const services: Record<string, unknown> = {
+        manifest: { register: (payload: unknown) => { payloads.push(payload); } },
+        metadata: {
+            registerInMemory: (type: string, name: string, item: unknown) => {
+                registrations.push({ type, name, item });
+            },
+        },
+        objectql: {},
+    };
+    const ctx = {
+        logger: { info: vi.fn(), warn: vi.fn(), error: vi.fn(), debug: vi.fn() },
+        registerService: vi.fn(),
+        // Unknown services answer `undefined`, as in the two-reader harness
+        // (app-plugin-artifact-forward-conversion.test.ts): every other read
+        // `start()` makes is an optional one it degrades past.
+        getService: vi.fn((name: string) => services[name]),
+        getServices: vi.fn(() => new Map()),
+        hook: vi.fn(),
+        trigger: vi.fn(),
+    } as any;
+    return { ctx, payloads, registrations };
+}
+
+describe('#22994: one conversion per boot, and every registrar takes its result', () => {
+    it('the config boot hands the manifest service the converted copy, and the security registrar registers the SAME converted objects', async () => {
+        const bundle = {
+            manifest: { id: APP_ID, name: 'Converted Collections Probe', type: 'app', version: '1.0.0' },
+            dashboards: [RETIRED_DASHBOARD],
+            // `allowRestore` is retired (`permission-allow-restore-purge-removed`),
+            // so the security registrar's copy is a converted one too.
+            permissions: [{ name: 'support_agent', label: 'Support Agent', objects: { crm_ticket: { allowRead: true, allowRestore: true } } }],
+        };
+        const { ctx, payloads, registrations } = capturingCtx();
+        const plugin = new AppPlugin(copy(bundle));
+        await plugin.init!(ctx);
+        await plugin.start!(ctx);
+
+        expect(payloads).toHaveLength(1);
+        const payload = payloads[0];
+        expect(payload.dashboards[0]).toEqual({ name: 'ops_board', label: 'Ops Board', widgets: [], refreshIntervalSeconds: 300 });
+        expect(payload.permissions[0].objects.crm_ticket).toEqual({ allowRead: true });
+
+        // ONE conversion: a second pass would hand the registrar a second,
+        // equal-looking copy. Identity is what tells the two apart.
+        const permission = registrations.find((r) => r.type === 'permission' && r.name === 'support_agent');
+        expect(permission?.item).toBe(payload.permissions[0]);
+    });
+
+    it('a current bundle is handed over unchanged: the authored collections, the same references', async () => {
+        const bundle = copy(CURRENT_ARTIFACT);
+        const { ctx, payloads } = capturingCtx();
+        await new AppPlugin(bundle).init!(ctx);
+
+        expect(payloads).toHaveLength(1);
+        expect(payloads[0]).toStrictEqual({ ...bundle.manifest, ...bundle });
+        // Copy-on-write: a conversion that changed nothing returns what it was
+        // given, so nothing the boot registers is a rewritten copy.
+        expect(payloads[0].dashboards).toBe(bundle.dashboards);
+        expect(payloads[0].emailTemplates).toBe(bundle.emailTemplates);
+    });
+
+    it('a bundle carrying packages[] is handed over as authored: init() never resolves the package list', async () => {
+        const bundle = {
+            manifest: { id: APP_ID, name: 'Converted Collections Probe', type: 'app', version: '1.0.0' },
+            packages: [{ manifest: { id: `${APP_ID}.core`, name: 'core', version: '1.0.0', type: 'app', dashboards: [RETIRED_DASHBOARD] } }],
+        };
+        const { ctx, payloads } = capturingCtx();
+        await new AppPlugin(bundle).init!(ctx);
+
+        expect(payloads).toHaveLength(1);
+        expect(payloads[0]).toStrictEqual({ ...bundle.manifest, ...bundle });
+        expect(payloads[0].packages).toBe(bundle.packages);
+    });
+});