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+
+docs(adr-0115): record the #4093 evaluation verdict — plugin-dev's fill-every-slot stub table is retired as a design; the plugin converges to pure assembly. Tiered disposition (fabricators first with a production guard; core's fallback family becomes the one copy with #4089; the working in-memory tier points at the real packages that already exist), sequenced behind the in-flight #4086. Implementation tracked in #4104. Documentation only; releases nothing.
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+# ADR-0115: The stub table is retired — plugin-dev assembles real plugins, and an empty slot means the same thing in every mode
+
+**Status**: Accepted (2026-07-30)
+**Deciders**: ObjectStack Protocol Architects
+**Builds on**: [ADR-0076](./0076-objectql-core-tiering.md) (D12 honest capabilities — its red line "a fallback may degrade features, never security semantics" and its conclusion 3 are the two rules this ADR generalizes), [ADR-0078](./0078-no-silently-inert-metadata.md) (no silently inert declarations — a filled slot that fabricates is the runtime-service form of the same lie), [ADR-0049](./0049-no-unenforced-security-properties.md) (enforce-or-remove — the disposition method reused here)
+**Consumers**: `@objectstack/plugin-dev` (the stub table and registration loop), `@objectstack/core` (`src/fallbacks/` becomes the one memory-fallback family), `@objectstack/runtime` (no changes — the #4086 gates already treat `handlerReady: false` as an empty slot), `content/docs/plugins/packages.mdx` + plugin-dev README (descriptions converge on reality)
+**Surfaced by**: [#4093](https://github.com/objectstack-ai/objectstack/issues/4093) — the one-level-up question after [#4000](https://github.com/objectstack-ai/objectstack/issues/4000) (PR #4062) and [#4058](https://github.com/objectstack-ai/objectstack/issues/4058) (PRs #4082/#4086) retired four stubs one at a time
+
+---
+
+## TL;DR
+
+plugin-dev's founding design — *"any core-service slot not occupied by a real plugin gets a dev stub, so the full kernel service map is populated"* — is **retired as a design**, not shaved one slot at a time. Its stated premise (downstream code needs correct return types instead of `undefined`) is refuted by the platform's own production semantics: every one of these services is optional, so every consumer must already survive an empty slot, and a consumer that cannot is a production bug to fix — not to mask in dev by feeding it fabricated data. Four slot retirements (#4000, #4058) proved this empirically; #4086 emptied three at once with every affected suite green and the kernel serving end-to-end.
+
+What remains of plugin-dev is the part that was always its real value: **assembly** — one plugin that wires ObjectQL, driver-memory, auth, security, the HTTP server, REST, the dispatcher, and app metadata for a zero-config dev boot. An unoccupied slot stays unoccupied in every mode; "the capability is present" means the same thing in dev as in production.
+
+Disposition is tiered (fabricators go first, duplicates merge into core's fallback family, the working in-memory implementations point at the real packages that already exist) — not a flag-day.
+
+## Context
+
+### The design under evaluation
+
+`dev-plugin.ts` registers child plugins, then walks all 17 `CoreServiceName` slots plus the three `security.*` handles and fills every slot still empty from a `DEV_STUB_FACTORIES` table (a slot with no factory gets a shapeless `{ _serviceName }` placeholder). The comment above the loop states the premise: fill the map *"so that … downstream code receives correct return types (arrays, booleans, objects — not undefined)"*.
+
+The design has been dismantled one slot at a time by the D12 lineage: #3891/#3989 retired the degraded analytics *shim* because honest labelling could not fix fabricated security semantics; #4000 retired the dev analytics *stub* because refilling the slot re-created the retired shape one layer down; #4058 step 1 (#4082) replaced the blanket `_dev: true` with per-implementation honesty classes; #4058 step 2 (#4086) retired `automation`, `notification`, and `ai` and gated every dispatcher domain on `handlerReady`. #4093 asks the question those four retirements kept converging on: whether the table itself should exist.
+
+### State after #4086
+
+| Class | Slots | Implementation |
+|:---|:---|:---|
+| `degraded` (really works, in-memory) | `cache`, `queue`, `job`, `i18n` | wrappers around core's `createMemory*` |
+| | `metadata` | a second hand-written copy of core's fallback |
+| | `file-storage`, `search`, `realtime`, `workflow` | plugin-dev-only implementations |
+| `stub` (fabricates) | `data`, `auth`, `security.permissions`, `security.rls`, `security.fieldMasker` | hand-written |
+| | `ui` | no factory → shapeless `{}` placeholder |
+| retired | `analytics` (#4000), `automation`, `notification`, `ai` (#4058) | — |
+
+### Evidence 1 — the premise is refuted by production semantics
+
+In production every one of these slots is empty unless a real plugin is installed: the services are optional, and since #4086 the dispatcher, the route mounts, and discovery all treat an unserveable occupant exactly like an empty slot. So the population of consumers the stub table claims to protect — code that breaks on `undefined` — either does not exist (nothing surfaced across four retirements: runtime 923 / plugin-dev 8 / objectql 1183 / metadata-protocol 99 tests green, kernel + dispatcher serving end-to-end) or is broken *in production*, where no stub will save it. The premise assumes the very bug class it purports to prevent, and hides it where it would otherwise surface loudly.
+
+The two `data`-service consumers in the repo (`runtime/src/default-datasource-plugin.ts`, `service-automation/src/builtin/crud-nodes.ts`) illustrate the correct pattern: both resolve defensively and tolerate absence, as the `security-service` contract explicitly instructs (*"Consumers MUST tolerate absence … rather than assume registration"*).
+
+### Evidence 2 — the security-shaped fakes cross the D12 red line
+
+ADR-0076 D12 (via #3891): **"A fallback may degrade features, never security semantics."** Three stubs do exactly the latter, in the fail-open direction:
+
+```ts
+security.permissions → checkObjectPermission() { return true; }   // allow-all
+security.rls         → compileFilter()        { return null; }    // no row filter
+security.fieldMasker → maskResults(r)         { return r; }       // no masking
+```
+
+`packages/spec/src/contracts/security-service.ts` says these three handles "are implementation internals and deliberately NOT part of this contract" — they belong to `plugin-security`'s own interior. plugin-dev fabricates another plugin's internals, and against the same contract's fail-closed stance (*"Access-narrowing answers fail CLOSED … never treat a thrown error or a deny filter as 'no restriction'"*). The trigger is one missing dependency: plugin-dev degrades gracefully per child plugin, so a stack where `@objectstack/plugin-security` fails to load gets one `warn` line and a silently allow-all, unfiltered, unmasked data plane.
+
+Precision, for the record: the `auth` stub is **dead code on the real identity path** — `resolve-execution-context.ts` authenticates via `authService.api.getSession()` / `getApi()` / `verifyMcpAccessToken()`, none of which the stub implements, so identity degrades to anonymous (fail-closed, and #3963/#4043 deny anonymous data access). It is a *potential* hole, not a live one: `verify() → { success: true, user: { roles: ['admin'] } }` is precisely the shape the next consumer would trust, and the occupied slot makes discovery advertise auth as present.
+
+### Evidence 3 — the duplicate family, with a paid receipt
+
+`metadata` is a hand-written second copy of core's `createMemoryMetadata` (`packages/core/src/fallbacks/memory-metadata.ts`). The cost is not hypothetical — `packages/core/CHANGELOG.md` (the #2111 follow-up) records one missing-`registerInMemory` bug fixed **in both copies**: *"Both in-memory `metadata` fallbacks (`@objectstack/core`'s `createMemoryMetadata` **and** `@objectstack/plugin-dev`'s dev stub) now implement `registerInMemory` …"*. Same shape as #3891's "the same security gate had to be built twice", at smaller stakes. The `cache`/`queue`/`job`/`i18n` entries delegate to core (no duplication), but they make plugin-dev a second *registration* path for implementations core already owns.
+
+### Evidence 4 — published, unguarded, unused, misdescribed
+
+- `@objectstack/plugin-dev` is **published** (`17.0.0-rc.0`, not private) and has **no environment guard** — nothing in `dev-plugin.ts` checks `NODE_ENV`; installing it registers the whole table wherever it runs.
+- **No in-repo consumer**: `os dev` boots through serve's real capability assembly (`cli/src/commands/dev.ts` never references `DevPlugin`); examples, `create-objectstack` templates, and apps have no usage. The stub table protects nobody in this repository.
+- The docs entry (`content/docs/plugins/packages.mdx`) describes a different plugin altogether: *"Metadata validation, schema introspection, debugging tools"*. It neither validates metadata nor introspects schemas; it assembles a stack and fills slots.
+
+### Evidence 5 (new in this evaluation) — Tier C's migration paths already exist, or are needed by nobody
+
+#4093 held out the four working in-memory implementations (`file-storage`, `search`, `realtime`, `workflow`) as "the only tier worth discussing", with the open question of whether real InMemory strategies must be built before retiring them. Verified against source, the question dissolves:
+
+- **`realtime`** — the real package already ships the strategy: `@objectstack/service-realtime` contains `in-memory-realtime-adapter.ts` and registers the `realtime` slot with it. plugin-dev's copy is a parallel duplicate of an existing dev path, i.e. Tier B in disguise.
+- **`file-storage`** — `@objectstack/service-storage` is real (local-disk + S3 adapters, attachment lifecycle, its own routes) and registers `file-storage`. The local adapter is the dev path; an in-memory Map that loses files on restart is not a capability the platform needs a second copy of.
+- **`search`, `workflow`** — **no code in this repository resolves either slot.** There is no `getService('search')` or `getService('workflow')` call site anywhere in `packages/` (the only touches are plugin-dev's own registration probe and the generic discovery walk); the dispatcher has no domain for them, and REST's `/api/v1/search` is the data-plane search, not the `search` service. These stubs serve no reachable code path — retiring them can regress nothing. When a real search or workflow service ships, it brings its own InMemory strategy, exactly as `service-analytics` did (the #4000 migration path).
+- **`ui`** — same verification: zero consumers of the slot; the shapeless placeholder exists only so `getService('ui')` doesn't throw for a caller that does not exist.
+
+## Decision
+
+**D1 — The stub table is retired as a design.** plugin-dev's contract is **assembly**: instantiate and wire the real plugins for a zero-config dev boot. It registers no service implementations of its own; a slot no child plugin fills stays empty, and the #4086 machinery already makes empty slots honest (404/501, `unavailable` in discovery) identically in dev and production. A consumer that breaks on an empty optional slot is a production bug — fix the consumer (fail closed, or feature off), never feed it fabricated data in development. This closes the class the D12 lineage retired one member at a time.
+
+**D2 — The fabricators go first and wait for nothing else (Tier A: `security.permissions`, `security.rls`, `security.fieldMasker`, `auth`, `data`, and the shapeless `ui` placeholder).** The security trio violates the D12 red line today and fakes another plugin's declared implementation internals in the fail-open direction; `auth` is fail-closed-by-accident (Evidence 2) and stays only until someone consumes the shape it advertises; `data` and `ui` fabricate or occupy for consumers that handle absence anyway. Empty is the production semantic; these slots get it now. This tier is deliberately independent of any discussion about dev ergonomics — none of these six ever provided any.
+
+**D3 — One memory-fallback family, owned by core (Tier B: `metadata`, plus the `cache`/`queue`/`job`/`i18n` wrappers).** plugin-dev's hand-written `metadata` copy is deleted; core's `createMemoryMetadata` is the only one. The four delegating wrappers are dropped with it — core's fallbacks and the service packages' own memory adapters (`service-cache`/`service-queue`/`service-job`, `I18nServicePlugin`) are the registration paths; plugin-dev stops being a third. Lands together with [#4089](https://github.com/objectstack-ai/objectstack/issues/4089) (core fallbacks get `__serviceInfo`), which settles "who is the one copy" and its honest self-description in a single change.
+
+**D4 — Tier C retires without a rebuild phase (`file-storage`, `search`, `realtime`, `workflow`).** Per Evidence 5 there is nothing to build first: `realtime` and `file-storage` point at `@objectstack/service-realtime` / `@objectstack/service-storage` (which exist and self-register), and `search` / `workflow` have no consumers to lose. The tombstone lives in the changeset and the retirement messages: *install the real service*. Resolves #4093 open question 2 — the "InMemory strategies first" ordering was predicated on the strategies not existing; they exist where they should (in the real packages), or the demand for them doesn't.
+
+*Refinement (maintainer review, 2026-07-30):* the dev-experience cost drops to near zero because Tier C's correct landing shape is **assembly, not absence**: plugin-dev's child-plugin list grows optional entries for `@objectstack/service-storage` and `@objectstack/service-realtime` — dynamically imported, wired when installed, skipped when not, exactly the existing 3b i18n auto-detect precedent (`I18nServicePlugin` when translations are present). The zero-config dev promise is kept by real implementations instead of fakes. `search`/`workflow` get no such wiring: there is nothing to wire for a consumer that does not exist.
+
+**D5 — Direct cut inside the 17.x rc window; the changeset carries the FROM → TO per slot.** No deprecation window and no stub-preserving grace release: the honest `stub`/`degraded` self-descriptions shipped by #4082/#4086 already are the deprecation notice (discovery has been telling every consumer these are not capabilities), and keeping an allow-all security fake alive one extra release "to be polite" is exactly what D2 forbids. External rc consumers get the standard breaking-changeset prescription (Post-Task Checklist rule: FROM → TO and the one-line fix — *install the corresponding real service, or handle the absent slot as production already requires*). Resolves open question 1.
+
+**D6 — plugin-dev grows a production guard, in the same change as Tier A.** `DevPlugin.init` throws when `NODE_ENV === 'production'`, escape hatch `OS_ALLOW_DEV_PLUGIN_IN_PRODUCTION=1` (Prime Directive #9 `OS_ALLOW_*` shape — deliberately scary). Deleting the fakes removes the security-semantics hazard; the guard covers what deletion cannot: the plugin still assembles a stack around a well-known default auth secret and a seeded dev admin, which no production deployment should get by accident. It does not ship as a separate earlier fix because Tier A itself waits for nothing (resolves open question 3 — the "maybe it shouldn't wait" concern was about the security stubs, and D2 removes them rather than gating them).
+
+**D7 — The descriptions converge on what the plugin is.** `content/docs/plugins/packages.mdx` and the plugin README/class doc describe an assembly plugin ("auto-wires ObjectQL + driver-memory + auth + security + HTTP server + REST + dispatcher + app metadata for local development"); the "Stub services" section and the "simulating all 17+ kernel services" claim are removed. Docs describing the retired design are ADR-0078's silent lie in prose form.
+
+### What deliberately stays
+
+- **plugin-dev itself.** Assembly is real value; nothing here shrinks `DevPluginOptions` or the child-plugin set. The `services` toggles keep governing child plugins.
+- **Core's `fallbacks/` family.** Those are production degraded-mode implementations governed by D12 honesty (+#4089), not dev fakes — `handlerReady: true` because they really serve.
+- **The #4086 gates.** Unchanged; this ADR removes the last producers those gates exist to catch, it does not remove the catch.
+
+## Execution
+
+Sequenced to avoid editing `dev-plugin.ts` under an in-flight PR. Ratified by the maintainer on 2026-07-30: D5's direct cut confirmed, and the tier work collapses into **two implementation PRs** — Tier A and Tier C are the same mechanical act on the same table (delete entries), so splitting them buys a second end-to-end verification round of the same file and a worse changeset narrative; Tier B stays separate because it reaches into core and carries #4089. Tracked in #4104.
+
+1. **#4086 merges first** (open at evaluation time — #4058 step 2). Its classification table is this ADR's baseline, and its tests are the harness the removals run against.
+2. **PR-1 — Tier A + Tier C + guard + assembly auto-wire** (D2 + D4 + D6): delete the six fabricator entries and the four in-memory implementations, simplify the registration loop, add the production assert, wire the optional `service-storage` / `service-realtime` child plugins, one breaking changeset carrying the full FROM → TO table per slot. (If #4086 stalls in review, the guard alone may ship first — it touches only the top of `init` and conflicts with nothing.)
+3. **PR-2 — Tier B + #4089 + docs** (D3 + D7): `__serviceInfo` on core's five fallbacks; delete plugin-dev's `metadata` copy and the four wrappers — the stub table and fill loop die here entirely; packages.mdx entry, README, and class doc converge.
+
+End state, mechanically checkable: `DEV_STUB_FACTORIES`, `DEV_STUB_SELF_INFO`, `SHAPELESS_STUB_SELF_INFO`, `NO_DEV_STUB_SERVICES`, and the fill loop no longer exist in `dev-plugin.ts`; `grep -r "createMemoryMetadata\|registerInMemory" packages/plugins/plugin-dev` is empty. The two-PR split is the ratified shape; the tier boundaries remain the decision.
+
+## Consequences
+
+- **+** "The capability is present" has one meaning across dev and production; the D12 producer inventory for plugin-dev closes completely instead of shrinking by one per issue.
+- **+** One copy of every memory implementation; the next `registerInMemory`-class bug is fixed once.
+- **+** The published package stops shipping unguarded allow-all security shapes; discovery stops advertising services nobody implemented.
+- **−** Breaking for any external 17.x-rc consumer that relied on a stub — mitigated by D5's changeset prescription, and softened in practice by #4082/#4086 having already advertised those slots as `stub`/non-serveable.
+- **−** A dev stack without a given real service cannot "try" that capability at all. Accepted deliberately: that trade was already made four times (#4000, #4058), and the alternative was fabricated answers.
+- **Risk**: a consumer outside this repo's test surface assumes a filled slot and now throws in dev. That is the design working — it surfaced a bug that production (empty slots) already had. The fix goes in the consumer, per D1.