Fix documentation defects found by an adversarial review
Fifteen findings, all verified before acting. The ones that mattered: - Corrections added without updating what they corrected. §5's table still said a cap-less NURI is one "without :k:", two hundred lines after §4 established the discriminant is `r:`. Same shape of defect in the P1a report, which kept the sentence "it is the owner's keyring, upstream the keyring is the wallet" — the exact sentence §4quater declares wrong, and the one that produced a global in-memory keyring. - A wrong source citation: RootCapRefresh/BranchCapRefresh live in verifier/src/commits/mod.rs, not repo/src/commit.rs, and are no-op stubs. - Documentation describing deleted code: isolation.ts, discovery.readIndex, the global index, and an acceptance test that was dropped with discovery. - The P1a implementation report had aged into being wrong in four places (caps not persisted, inbox processing not started, plain string types, the :k: segment). It is dated, so it now carries a header saying what later lots overtook, rather than being rewritten. - vision.md stated "a document's data is stored encrypted" in the present tense. That is the target; here the cap value is the constant OK and nothing is encrypted. Said plainly now. - Prose left mangled by an earlier mechanical find-and-replace, in four places I had claimed were repaired. Also: reach.ts and connect.ts had no home in the permanent docs — the boundary and the connection sequence are now described in simulation.md, not only in a brief.
This commit is contained in:
Sylvain Duchesne
@@ -8,6 +8,15 @@ The spec below is unchanged — read it first. Everything from here to *Why this
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# Implementation report (2026-07-28)
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> **Superseded in places by later lots — read with [`2026-07-30-virtual-wallet-boundary.md`](2026-07-30-virtual-wallet-boundary.md).** This report was accurate on 2026-07-28 and is kept as written; four of its statements have since been overtaken, and a fifth was wrong when written:
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>
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> - *"ReadCaps are NOT persisted as caps anywhere. There is no key store"* — **no longer true.** Both durable registers are now emulated: `shim:readCap` on the store's Store branch (`AddRepo`) and `shim:link` on its User branch (`AddLink`). Caps are read back, not recomputed.
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> - *"Processing inboxes … Not started"* — **done** (`src/connect.ts`), at both levels, including per-document inboxes.
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> - *"`Nuri` and `ReadCap` are plain strings"* — **superseded the same week**: they are template literal types, so the confusion the runtime guard catches is now also a compile error. The *Typing* section below records the change; the earlier sentences were not rewritten.
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> - The `:k:` segment throughout — **a ReadCap is `r:`** (`BlockRef::readcap_nuri`, `engine/repo/src/types.rs:518-521`), reported by NextGraph's developer and verified. `:k:` belongs to objects, files and commits.
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> - *"That branch lists the store's documents… It is the owner's keyring. Upstream, the keyring is the wallet"* — **wrong when written**, and it is the sentence that produced a global in-memory "keyring". There is no keyring object; the wallet holds one root key per user. See [`../readcap-and-nuri-model.md`](../readcap-and-nuri-model.md) §4quater.
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## What landed
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| Spec | Where |
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@@ -1,6 +1,6 @@
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# Brief — the virtual user boundary
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**Status: specified 2026-07-30; all four steps done.** Sits alongside `2026-07-20-caps-emulation-alignment.md` (the wider caps chantier) and `2026-07-27-p1a-cap-surface.md` (the surface, implemented). This lot is about something more fundamental than either: **what a virtual user is allowed to reach.**
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**Status: specified 2026-07-30; all seven steps done** (four planned, three added as the work uncovered them). Sits alongside `2026-07-20-caps-emulation-alignment.md` (the wider caps chantier) and `2026-07-27-p1a-cap-surface.md` (the surface, implemented). This lot is about something more fundamental than either: **what a virtual user is allowed to reach.**
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## Why this lot exists
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@@ -117,7 +117,7 @@ Applies to every exported surface, including ones added later: **if it is expose
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*Not done, and deliberately*: per-DOCUMENT inboxes. Upstream every document has one; here only the wallet does. **The PO has ruled they must come** (2026-07-30) — *"it can come in a second step, but it must come"* — so this is a commitment, not an option. The guard predicate (`isOwnInbox`) is where they plug in: it answers "is this inbox mine?", which extends to "…one of my documents' inboxes" without changing a single caller.
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### Two defects this step surfaced, both open
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### Two defects this step surfaced — the first still open, the second closed by steps 5–6
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**`walletInbox(id)` is a directory, and directories do not exist.** It resolves ANY wallet's inbox from its identity id, and it is exported (`storeRegistry.*` is re-exported from the SDK entry). But you cannot look someone up in NextGraph — you cannot discover, you can only follow links. Their inbox NURI reaches you because *they gave it to you*, not because you resolved it from a name. Resolving **my own** inbox is legitimate plumbing; resolving **anyone's** is the same shape as the discovery index just removed. Fix: the public surface becomes "my inbox" (no argument), and reaching someone else's requires a NURI you were given. Resolution-by-id stays internal, for the shim and the tests.
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@@ -76,9 +76,7 @@ Replace the emulated `inbox.ts` deposit (`docs.sparqlUpdate` into a shared-walle
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document) with the native `inbox_post_link` (proposed/future). On the read side the
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recipient's own verifier unseals each queued sealed message and applies it inline
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when it processes its inbox — there is no separate curator to build; the in-lib read
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emulation simply goes away (see the deferred global-index note in the top-level
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README and [`decisions/discovery-model.md`](./decisions/discovery-model.md)). The
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single global index replaces the cross-account fan-out.
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emulation simply goes away. *(There is no global index to replace the cross-account fan-out: both were removed on 2026-07-30 — you cannot discover in NextGraph, you follow links.)*
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### 5. Retire the identity store → real per-user login
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Remove `accounts.ts` (the `IdentityStore` that persists the identity id in
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@@ -87,11 +85,10 @@ becomes the real per-user login
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(see [`decisions/shared-wallet-login-flow.md`](./decisions/shared-wallet-login-flow.md)).
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The flow shape ("broker redirect → app") does not change.
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### 6. Drop the isolation scaffold
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`isolation.ts` (application-visibility scaffold) disappears against a
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different piece of infra than the caps: real per-account wallets, and the
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relationship concept the consumer application owns. Distinct axis from ReadCaps —
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remove independently.
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### 6. ~~Drop the isolation scaffold~~ — already gone
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`isolation.ts` (the old application-visibility filter) was deleted from the library;
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nothing remains to remove at migration. Kept as a numbered step so the following
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numbers stay stable across references.
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### 7. Remove the build alias — the client becomes the real SDK
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The consumer application imports `@ng-org/web` / `@ng-org/orm` resolved to this lib
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@@ -663,7 +663,7 @@ On a FRESH session over the SAME persistent wallet (reconnect, new page, re-logi
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anchored `sparql_query` against a document written in an earlier session comes back with
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**0 rows and no error** — persisted documents read as empty. Observed on every anchored
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reader of the polyfill and healed identically in each (`ensureRepoOpen` before the read,
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`packages/client/src/open-repo.ts`): the discovery index (`discovery.ts` `readIndex`),
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`packages/client/src/open-repo.ts`): the user's own documents,
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the user's store (`store-registry.ts` `readUserStore`), the by-need doc batch
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(`read-model.ts` `readUnion`), and the store-root pointer read (`store-registry.ts`
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`resolvePointer`). The heal is `doc_subscribe(nuri)` → await the first `State` (the sync
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+1
-1
@@ -57,7 +57,7 @@ My participations / my profile, protected data an owner has granted me, my
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notifications — none of these is enumerated across accounts. Each is reached by
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what is already reachable to me:
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- my own docs (always in `self.repos`, and whose caps what I hold holds);
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- my own docs (always in `self.repos`, and whose caps I hold);
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- docs whose cap an owner has delivered to my inbox (`shareCap` — see the
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per-document ReadCap in [`simulation.md`](./simulation.md));
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- my inbox (deposits addressed to me).
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@@ -2,7 +2,7 @@
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**Established 2026-07-20**, VERIFIED by direct reading of the `nextgraph-rs` Rust core (except for points marked INFERRED). The `file:line` references are dated — line numbers are volatile, navigate by symbol/regex.
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Purpose: to give the ground truth of NextGraph's access-rights model, in order to align the polyfill's `caps.ts` emulation (today an ACL — the inverse of the real model). This is the basis for the item "align ReadCap/WriteCap with NextGraph".
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Purpose: to give the ground truth of NextGraph's access-rights model, in order to align the polyfill's `caps.ts` emulation (an ACL until P1a — the inverse of the real model; realigned 2026-07-28, see §5). This is the basis for the item "align ReadCap/WriteCap with NextGraph".
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> ## How to use this document — verify, never infer
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>
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@@ -48,7 +48,7 @@ So "wallet targeting" lives in the **sealing envelope**, not in the cap: the cap
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A delivered key is not "taken back". To revoke = **re-encrypt** with a new key and re-seal it only to the remaining authorized holders.
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- "Capabilities are not durable: they can be refreshed by members and previously shared Caps become obsolete/revoked… if [a member] doesn't subscribe, they lose access after the refresh" (`net/types.rs:5055-5058`).
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- Mechanism: `RootCapRefresh` / `BranchCapRefresh` (`repo/src/commit.rs:616,630`; perms `types.rs:1748-1749`).
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- Mechanism: `RootCapRefresh` / `BranchCapRefresh` (`engine/verifier/src/commits/mod.rs:616,630` — both no-op `Ok(())` stubs today; perms `types.rs:1748-1749`).
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- Consequences: **coarse** (repo/branch scale), **non-retroactive** (what was read before remains known to the former holder; they only decrypt the versions **prior to** the refresh).
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- **Durable** delivery of a cap = `PermaCap` — still **TODO** (`repo/types.rs:578`).
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@@ -178,7 +178,7 @@ The distinction is the operative one, and it is sharp:
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The test to apply to anything shared: *does removing it stop the virtual users from functioning, or does it merely stop users from seeing each other's content?* Only the first justifies existing outside a wallet.
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*Impact on this library, recorded 2026-07-30 and not yet resolved*: `discovery.ts` (a global index owned by a reserved `@index` account, `submitToIndex` / `readIndex` / `watchIndex`) emulates exactly the capability described above as non-existent, **and** holds pooled user data, and `watchShape('public')` folds it into its read set. The ADR that specified it ([`decisions/discovery-model.md`](decisions/discovery-model.md)) already recorded that a freely-readable global index "is not a NextGraph shape" and rested on a singleton-app path that is "not implemented, uncertain". That reservation is now a verdict on both counts. See [`briefs/2026-07-30-virtual-wallet-boundary.md`](briefs/2026-07-30-virtual-wallet-boundary.md).
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*Impact on this library, RESOLVED 2026-07-30 — the module was removed*: `discovery.ts` (a global index owned by a reserved `@index` account, `submitToIndex` / `readIndex` / `watchIndex`) emulates exactly the capability described above as non-existent, **and** holds pooled user data, and `watchShape('public')` folds it into its read set. The ADR that specified it ([`decisions/discovery-model.md`](decisions/discovery-model.md)) already recorded that a freely-readable global index "is not a NextGraph shape" and rested on a singleton-app path that is "not implemented, uncertain". That reservation is now a verdict on both counts. See [`briefs/2026-07-30-virtual-wallet-boundary.md`](briefs/2026-07-30-virtual-wallet-boundary.md).
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## 4quater. Where an owner gets the caps for THEIR OWN documents — the Store branch
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@@ -280,9 +280,9 @@ What remains true, and is a separate matter — the *delivery* path is unimpleme
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| Durability | **durable** (key delivered once) | durable **in shape**: creation and re-listing refile own caps from the scope index (the emulated `AddRepo` branch); a delivered cap persists in the recipient's inbox document |
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| Revocation | coarse **re-key**, non-retroactive | **not emulated** (P3). Nothing pretends to revoke |
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| Granularity | repo / branch / commit / object | **one cap per doc-NURI** |
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| Ref. without rights | **cap-less NURI** (no `:k:`) | same — `Nuri` names, `ReadCap` names and reads |
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| Ref. without rights | **cap-less NURI** (no `r:` segment) | same — `Nuri` names, `ReadCap` names and reads |
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**The divergence that REMAINS, and it is the load-bearing one**: the stand-in key is a constant (`OK`) rather than a secret, and several read paths consult no cap at all (`docs.sparqlQuery`/`sparqlUpdate`, the whole inbox, `store-registry`, `discovery.readIndex`, `subscribe`, `open-repo`). So P1a bought the **shape**, not the isolation — per-document encryption and closing that inventory are **P1b**. Nothing may be claimed "anonymous" or "private" before it.
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**The divergence that REMAINS**: the stand-in cap value is the constant `OK` rather than a secret. The read paths that once consulted no cap at all are now confined to the connected virtual user (`reach.ts`, 2026-07-30) — `docs.sparqlQuery`/`sparqlUpdate` and `subscribeDoc` are guarded, the inbox is read only by its owner, and the shim's own machinery moved to unguarded primitives that are never exported. So what is left for **P1b** is per-document encryption: replacing one constant with a real key. Until then, nothing may be claimed "anonymous" or "private".
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**App-facing**: `declareConnections` (on the consumer side), which re-declared "my connections read my protected entities" **every session**, was an artifact of the ephemeral ACL — **it disappears**. The grant moves to the moment a connection is accepted (`shareCap` once, per document), which is a consumer **re-architecture**, not an API swap.
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+3
-3
@@ -374,7 +374,7 @@ documents whose caps you hold, and nothing else. Proven in
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`test/isolation-active.test.ts` (a document nobody shared is unreadable; a share to
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one inbox reveals it there and only there; a bare reference reads nothing while the
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repo link opens the published document; a returning identity keeps its caps) and in
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`test/watch-shape.test.ts` (e), the acceptance test below.
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`test/cross-user-access.test.ts`, the acceptance test below.
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This discrimination is only observable because each entity is its own document (the
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consumer application creates per-entity docs via `createEntityDoc`) — in a mono-store
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@@ -387,7 +387,7 @@ Alice owns a protected document holding a secret and a public one that carries a
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reference, and can NAME the protected document while reading nothing of it —
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publication is **not recursive**. Charlie, holding the same link plus the protected
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document's cap (delivered to his inbox), reads through the very same reference. The
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only difference between them is what what they hold holds; nobody was named to any
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only difference between them is each of them holds; nobody was named to any
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registry. And dynamically: the cap lands in Bob's inbox, his client processes it, and
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the read that was empty yields the content — the held-caps signal re-running it.
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@@ -423,7 +423,7 @@ possession-shaped (`createEntityDoc` files a cap, `shareCap` delivers one,
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one document per entity, the per-document cap discriminates at entity granularity —
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the target's behaviour.
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The old item-level application-visibility filter (`isolation.ts`
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The old item-level application-visibility filter (the since-deleted `isolation.ts`
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`applyIsolation`, a `Set`-of-records filter keyed on owner+scope) is retired
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from the consumer path: the application carries no access logic — it declares its
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identity and shares caps, and trusts the SDK. Its matrix functions are
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+3
-1
@@ -18,7 +18,9 @@ Without a minimum of crypto simulation, damaging shortcuts get taken (reading th
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> **A `did` (bare id, WITHOUT a ReadCap) and a NURI (WITH a ReadCap) are treated GENUINELY differently: the former does NOT allow reading the data; the latter is SUFFICIENT and REQUIRED.**
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Concretely: a document's data is **stored encrypted** (per-doc symmetric encryption, however lightweight); the **ReadCap = the key**; without it, **decrypting/reading is impossible**. No ACL, no plaintext accessible "on the side". Obtaining read access = **holding the key**, exactly as in the target model.
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Concretely, **in the target**: a document's data is **stored encrypted** (per-doc symmetric encryption, however lightweight); the **ReadCap = the key**; without it, **decrypting/reading is impossible**. No ACL, no plaintext accessible "on the side". Obtaining read access = **holding the key**, exactly as in the target model.
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> **Not yet true here, and saying so matters.** The shape is in place — possession decides, every access is confined to the connected virtual user, caps are stored and read back — but the cap value is the constant `OK` and nothing is encrypted. Per-document encryption is **P1b**, and it is one function (`nuri.ts` `mintCap`). Until it lands, nothing this library does may be described as anonymous or private.
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## Shape consequences (to respect everywhere)
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