feat: adapter contract, commerce proof-of-fit, and reusability docs

Proves the engine did not stay video-specific during extraction. - application adapter contract in core (createApplicationAdapter, evaluateObject, collectTargets): an object names the targets that govern it and the strictest verdict reaching any of them wins, so denying a seller takes their whole catalogue down with no cascade logic in the application - examples/commerce: a marketplace on the public API covering all ten proof-of-fit behaviors the plan requires, including that no core change was needed. One product, one snapshot, four surfaces, four different verdicts. - README, integration guide, per-example README, CHANGELOG, four ADRs, and GPL-3.0-or-later LICENSE (the license was listed in Phase 1 but missing) - checkpoints rewritten to reflect actual state and to say plainly which migration-plan phases belong to the consumer repos rather than here Fixes a real gap found by the proof-of-fit: composeDecisions kept only the first decision's evidence, so an object governed by several targets lost the evidence that drove its verdict. Evidence now merges — counts summed, contributor lists unioned, flags or-ed. 556 tests; lint, typecheck, and per-package type build clean.
2026-10-27 08:31:00 +00:00 · 2026-08-09 17:57:09 -04:00
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 # Changelog
 Notable changes to this repository. The package version and the wire schema
 version move independently: a breaking package release does not imply a new
 event schema, and a new schema does not require a major package bump unless the
 public API changes with it.
 ## [Unreleased]
 ### Added
 - **Core decision model.** Four independent dimensions (`ranking`, `visibility`,
  `interaction`, `transaction`) with severity ladders and commutative
  max-merge composition.
 - **Stable reason identifiers** (`REASON_IDS`) as part of the public contract.
  Renaming or removing one is a breaking change.
 - **Structured evidence**, redacted by default and merged across an object's
  targets, so a multi-target object explains itself with everything that
  contributed.
 - **Administrative-state reduction** with capability filtering at merge time,
  community-source marking, and protected-actor stripping.
 - **Snapshot fingerprints** for cache invalidation and mismatch records.
 - **Application adapter contract** (`createApplicationAdapter`,
  `evaluateObject`, `collectTargets`).
 - **Codecs**: canonical v1 on `kind:30078`, NIP-56 reports, NIP-51 mute lists,
  legacy administrative lists, bech32/NIP-19, replaceable selection with a
  deterministic same-timestamp tiebreak, injected signature verification.
 - **Runtime**: six stores, transport orchestration, chunked report
  subscriptions, viewer lifecycle, diagnostics, idempotent teardown.
 - **Commands** with local capability checks, protected-target refusal, partial
  relay acceptance, and stable error codes.
 - **Characterization corpus**: 34 generated fixtures covering the behaviors the
  migration plan's Phase 0 requires, plus a conformance suite that evaluates
  them.
 - **Commerce proof-of-fit** (`examples/commerce`) demonstrating the engine
  outside a video application using only the public API.
 - GPL-3.0-or-later `LICENSE`, `README`, and an integration guide.
 ### Fixed
 - Per-package `types` fields pointed at paths the build never produced, so
  consumers received no type declarations at all. Declarations now emit per
  package and resolve.
 - `reduceAdminState` accepted malformed target identifiers, because
  `getTargetKey` formats anything it is given.
 - `community-user-deny` fired for any contributor rather than only for
  community-curated sources, making a direct moderator action indistinguishable
  from a federated one.
 - `composeDecisions` kept only the first decision's evidence, so an object
  governed by several targets lost the evidence that drove its verdict.
 - `OverrideStore.clear()` shadowed the inherited listener `clear()`, leaking
  subscribers on teardown. Now `clearOverrides()`.
 ### Changed
 - The evaluator no longer carries application thresholds. The previous invented
  defaults (5/3/10/5) are gone; applications supply category thresholds through
  a policy definition. The characterized reference values live in
  `@nostr-governance/bitvid-compat` as one application's profile.
 - `createAuthorityState` takes an options object and always grants the root
  every capability and protection.
 - Evaluation takes a `GovernanceSnapshot` and a `ViewerState` rather than a
  flat state object, and reads an injected clock instead of wall time.
@@ -0,0 +1,674 @@
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 permissions.  However, no additional obligations are imposed on any
 author or copyright holder as a result of your choosing to follow a
 later version.
  15. Disclaimer of Warranty.
  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
 APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
 OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
 IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
 ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
  16. Limitation of Liability.
  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
 SUCH DAMAGES.
  17. Interpretation of Sections 15 and 16.
  If the disclaimer of warranty and limitation of liability provided
 above cannot be given local legal effect according to their terms,
 reviewing courts shall apply local law that most closely approximates
 an absolute waiver of all civil liability in connection with the
 Program, unless a warranty or assumption of liability accompanies a
 copy of the Program in return for a fee.
                     END OF TERMS AND CONDITIONS
            How to Apply These Terms to Your New Programs
  If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
 free software which everyone can redistribute and change under these terms.
  To do so, attach the following notices to the program.  It is safest
 to attach them to the start of each source file to most effectively
 state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 Also add information on how to contact you by electronic and paper mail.
  If the program does terminal interaction, make it output a short
 notice like this when it starts in an interactive mode:
    <program>  Copyright (C) <year>  <name of author>
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.
 The hypothetical commands `show w' and `show c' should show the appropriate
 parts of the General Public License.  Of course, your program's commands
 might be different; for a GUI interface, you would use an "about box".
  You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU GPL, see
 <https://www.gnu.org/licenses/>.
  The GNU General Public License does not permit incorporating your program
 into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
 <https://www.gnu.org/licenses/why-not-lgpl.html>.
@@ -0,0 +1,158 @@
 # nostr-governance
 A headless, application-agnostic governance engine for Nostr: moderation,
 access control, and trust-graph policy, with no opinion about what your
 application is.
 The engine carries **no thresholds of its own**. Applications supply a policy
 definition; the engine supplies precedence, aggregation, composition, and
 explanation. That separation is what lets one engine serve a video app and a
 marketplace without either leaking into the other.
 ## Why it looks like this
 **Four independent decision dimensions.** A governance decision is not a
 `hidden` boolean. It is four answers:
 | Dimension | Values |
 | --- | --- |
 | `ranking` | `normal` → `downrank` (with weight) |
 | `visibility` | `allow` → `warn` → `restrict` → `hide` → `deny` |
 | `interaction` | `allow` → `require-explicit-action` → `deny` |
 | `transaction` | `allow` → `require-review` → `deny` |
 A marketplace listing can be visible to its seller, downranked in discovery,
 inspectable behind a warning on its detail page, and blocked at checkout — all
 from one evaluation. Collapsing that into one boolean is what forces
 applications to reimplement policy.
 **Composition is ladder-maximum per dimension**, which makes it commutative and
 associative: the order decisions arrive in cannot change the result.
 **Capabilities resolve at merge time, not ingest time.** Revoking a moderator's
 role drops their contributions from effective state immediately, without
 replaying or rewriting anything.
 **Trust seeds are a fallback, not an addition.** Once a viewer has real
 contacts, configured seeds stop contributing — following nobody must not be
 equivalent to following the operator's seed list.
 ## Packages
 | Package | Purpose |
 | --- | --- |
 | `@nostr-governance/core` | Pure evaluation. No I/O, no browser globals, no dependencies. |
 | `@nostr-governance/nostr` | Codecs: canonical v1, NIP-56, NIP-51, legacy lists, bech32. |
 | `@nostr-governance/runtime` | Stores, transport orchestration, commands. |
 | `@nostr-governance/testing` | Conformance harness. |
 | `@nostr-governance/bitvid-compat` | Reference application profile for the characterization corpus. |
 ## Quick start
 ```js
 import { createPolicyDefinition, evaluateTarget } from "@nostr-governance/core";
 import { createGovernanceRuntime, createMemoryTransport } from "@nostr-governance/runtime";
 const policy = createPolicyDefinition({
  id: "my-app",
  version: "1.0.0",
  defaultProfile: "feed",
  profiles: {
    feed: {
      name: "feed",
      administrativeDeny: { visibility: "hide", interaction: "deny" },
      reports: {
        spam: { downrank: 1, restrict: 3, hide: 8 },
        malware: { hide: 1, interactionDeny: 1 },
      },
      mutes: { default: { downrank: 1, hide: 20 } },
      muteWindowSeconds: 60 * 24 * 60 * 60,
    },
  },
 });
 const runtime = createGovernanceRuntime({
  applicationId: "my-app",
  namespace: "myapp",
  transport: myRelayAdapter,
  policy,
  now: () => Math.floor(Date.now() / 1000),
 });
 runtime.setViewer(viewerPubkey);
 runtime.trust.setContacts(followList);
 await runtime.loadAdministrativeState();
 const decision = runtime.evaluate({ type: "user", pubkey: authorPubkey }, { profile: "feed" });
 if (decision.visibility.effect === "hide") return null;
 ```
 ## Extending to a new application
 Write an adapter saying what your object is in governance terms, and a policy
 saying what the evidence means to you. Nothing else.
 ```js
 import { createApplicationAdapter, evaluateObject } from "@nostr-governance/core";
 const productAdapter = createApplicationAdapter({
  applicationId: "my-shop",
  toTargets: (product) => [
    { type: "user", pubkey: product.sellerPubkey },
    { type: "event", id: product.id, author: product.sellerPubkey },
    { type: "address", kind: "30078", pubkey: product.sellerPubkey, identifier: product.sku },
  ],
  getPrimaryTargetKey: (product) => `address:30078:${product.sellerPubkey}:${product.sku}`,
 });
 const decision = evaluateObject(product, productAdapter, (target) =>
  runtime.evaluate(target, { profile: "checkout" }),
 );
 ```
 A worked example lives in [`examples/commerce`](examples/commerce) — a
 marketplace built entirely on the public API, demonstrating seller allowlists,
 address denial that survives republication, malware-driven checkout blocking,
 capability-scoped moderator roles, community curator ingestion, and
 seller-facing explanations. See [`docs/integration-guide.md`](docs/integration-guide.md).
 ## Authority model
 Root-authorized contributors: the root publishes the role roster, each actor
 publishes contributions under their own key, and a contribution is accepted only
 if the signing actor holds the matching capability.
 ```
 manage-roles            manage-policy         manage-community-sources
 contribute-user-allow   contribute-user-deny  contribute-event-deny
 contribute-address-deny contribute-trust-seed review-evidence
 ```
 Roles are convenience bundles over these; applications define their own
 (`listing_moderator`, `seller_moderator`, …). No moderator ever needs the root
 key. Protected actors cannot be denied by any contributor list, however many
 curators list them.
 ## Development
 ```bash
 npm install
 npm run lint          # reference guard + typecheck
 npm test              # unit + conformance
 npm run build:types   # per-package .d.ts
 ```
 BitVid and BitRoad are **read-only reference repositories**, pinned by commit in
 [`docs/reference-map.md`](docs/reference-map.md). Behavior is copied via fixtures
 and characterization tests, never by importing their source;
 `npm run check:references` fails the build if anything does.
 Regenerate the characterization corpus with:
 ```bash
 node scripts/build-characterization-corpus.mjs
 ```
 ## License
 GPL-3.0-or-later. See [`docs/license-and-provenance.md`](docs/license-and-provenance.md).
@@ -0,0 +1,35 @@
 # ADR 0001 — Four independent decision dimensions
 **Status:** accepted
 ## Context
 The reference application collapsed moderation into a small number of booleans
 (`blurThumbnail`, `hideReason`, `blockAutoplay`), computed in two places that
 overlapped. A commerce consumer needs a state those booleans cannot express: a
 product that is visible, inspectable, downranked, and unbuyable at once.
 ## Decision
 A decision carries four independent dimensions, each an ordered ladder:
 - `ranking`: `normal` → `downrank` (with accumulated weight)
 - `visibility`: `allow` → `warn` → `restrict` → `hide` → `deny`
 - `interaction`: `allow` → `require-explicit-action` → `deny`
 - `transaction`: `allow` → `require-review` → `deny` (present only when a
  profile can affect it)
 Composition takes the ladder maximum per dimension.
 ## Consequences
 Composition is commutative and associative, so the order decisions arrive in
 cannot change the result — which is what lets an object be evaluated against
 several targets and merged without an ordering rule.
 Consumers must map dimensions to their own UI rather than reading a boolean.
 That is more work at the call site and is the point: the mapping is application
 policy, and putting it in the engine is how the duplication started.
 `transaction` is absent rather than `allow` when no profile gate can reach it,
 so a consumer can distinguish "explicitly permitted" from "not governed here".
@@ -0,0 +1,34 @@
 # ADR 0002 — Capabilities resolve at merge time
 **Status:** accepted
 ## Context
 The reference application treated moderator status as a UI permission: an
 editor list gated which buttons appeared, but the resulting events carried no
 cryptographic authority. Anyone could publish the same event.
 Revocation is the hard part. If a contribution's validity is decided when it is
 ingested, revoking a role later requires finding and undoing everything that
 actor ever contributed.
 ## Decision
 Contributions are stored as-published, keyed by (actor, kind). Effective state
 is derived by `reduceAdminState`, which resolves each actor's capabilities
 against the *current* authority state every time it runs.
 ## Consequences
 Revocation is immediate and requires no rewriting: drop the role, recompute,
 and that actor's entries are gone. A revoked moderator's stored contributions
 become inert rather than needing deletion.
 Reduction cost is proportional to total contributions rather than to the change.
 For realistic list sizes this is far cheaper than maintaining incremental
 invalidation, and the store only recomputes when something actually changed.
 An actor's contributions can also come *back* if their role is restored, which
 is the correct behavior for a mistaken revocation but must be understood when
 reasoning about "permanent" removal — permanence lives in the contribution
 being retracted, not in the role.
@@ -0,0 +1,34 @@
 # ADR 0003 — The engine carries no thresholds
 **Status:** accepted
 ## Context
 The extraction started from one application's numbers: blur at 3 trusted
 reports, hide at 20 trusted mutes, a 60-day mute window. Those were nearly
 promoted into the core as defaults, which would have made every future consumer
 inherit a video application's editorial judgement.
 ## Decision
 The core defines the *vocabulary* — target types, capabilities, effect ladders,
 reason identifiers, aggregation and precedence rules — and no thresholds.
 Applications supply a `PolicyDefinition` of named profiles with category
 thresholds. The characterized reference values live in
 `@nostr-governance/bitvid-compat` as one application's profile.
 `NEUTRAL_POLICY` is the fallback: it enforces administrative denial and applies
 no trust thresholds, so the generic engine never hides content merely because
 one trusted account acted against it.
 ## Consequences
 A new consumer writes a policy instead of arguing with a default. The commerce
 example needed no core change, which is the test this decision has to pass.
 An application that supplies no policy gets very little enforcement. That is
 deliberate: silently applying someone else's moderation thresholds is worse than
 applying none, because the operator would not know it was happening.
 Threshold `0` means "gate disabled" rather than "fires on everything", so
 zeroing a value is a safe way to switch a gate off.
@@ -0,0 +1,26 @@
 # ADR 0004 — The core is hex-only
 **Status:** accepted
 ## Context
 Administrative lists in the wild contain both hex pubkeys and `npub` strings,
 and the reference implementation normalized them everywhere it touched them.
 Doing the same in the core would mean bech32 decoding in a package that is
 meant to have no dependencies and no encoding opinions.
 ## Decision
 `@nostr-governance/core` accepts 64-character hex only. Decoding lives in
 `@nostr-governance/nostr` (`normalizePubkeyInput`, `normalizeEventIdInput`),
 and codecs normalize at ingest, so the core only ever sees hex.
 ## Consequences
 The core stays dependency-free and runs unchanged in Node and the browser.
 The trade-off is a real footgun: `normalizePubkey` returns `""` for a valid
 `npub` rather than throwing. Callers that hand user input straight to the core
 will silently get nothing. Anything accepting operator or user input must
 normalize through the codec package first — this is called out in the
 integration guide.
@@ -1,63 +1,109 @@
 # Checkpoints
 Scope note: this repository is the SDK. Migration-plan Phases 6–11 (BitVid
 shadow mode, cutovers, and duplicate removal) modify the consumer repositories
 and are tracked there, not here.
 ## Checkpoint 0 — Repo skeleton (completed)
-Delivered:
+Delivered: npm workspaces monorepo, Node 22 + ESM, Vitest, JSDoc typecheck,
- npm workspaces monorepo
+GitHub Actions CI, reference import guard, provenance docs.
 - Node 22 + ESM
 - five empty packages under `packages/`
 - Vitest harness
 - TypeScript JSDoc typecheck
 - GitHub Actions CI
 - reference import guard
 - provenance docs
-Validation:
+Later additions: GPL-3.0-or-later `LICENSE`, `CHANGELOG.md`, architecture
-```bash
+decision records under `docs/adr/`, and a working per-package type build. The
-npm install
+`types` fields previously pointed at paths the build never produced, so
-npm run check:references
+consumers received no declarations; declarations now emit into each package.
-npm run typecheck
+
-npm test
+## Checkpoint 1 — Characterization corpus (completed)
-npm run build:types
+
 Delivered:
 - 34 fixtures under `fixtures/bitvid/cases/`, generated by
  `scripts/build-characterization-corpus.mjs`
 - conformance harness (`packages/testing/src/conformance.js`) that builds a
  snapshot, evaluates it, and diffs against a partial expectation
 - conformance suite (`tests/conformance/bitvid-fixtures.test.js`) asserting
  every required behavior, determinism, and input immutability
 Characterized values, read from the pinned reference commit and cross-checked
 against the migration plan's baseline section:
 ```text
 Trusted report blur threshold:       3
 Trusted report autoplay threshold:   3
 Trusted mute hide threshold:        20
 Trusted spam-report hide threshold:  5
 Trusted mute validity window:       60 days
 ```
-Gate: do not add runtime or BitVid codecs until fixture corpus exists.
+These live in `@nostr-governance/bitvid-compat` as one application's profile,
 not as engine defaults.
-## Checkpoint 1 — BitVid fixture and conformance corpus (completed)
+Provenance: fixtures are authored from the reference source and its documented
 configuration, not captured from a live relay. They pin the behavior the
 extraction must reproduce; they are not a recording of production traffic.
-Delivered:
+## Checkpoint 2 — Pure core (completed)
 - fixture folders for BitVid cases (admin-state, reports, trusted-mutes, overrides, expectations)
 - import script harness (`scripts/import-bitvid-fixtures.mjs`)
 - characterization cases list (`fixtures/bitvid/characterization-cases.json`)
 - conformance test framework (`tests/conformance/bitvid-fixtures.test.js`)
 - testing utilities (`packages/testing/src/conformance.js`)
-Validation:
+Delivered: identifiers, targets, authority, administrative-state reduction,
-```bash
+reasons, evidence, policy engine, fingerprints, evaluator, adapter contract.
 npm run check:references  # still passes
 npm test                  # now includes conformance tests
 ```
-Status: Ready for real fixture extraction from BitVid.
+Acceptance:
 - identical snapshots produce identical decisions (asserted per fixture)
 - evaluation performs no I/O and reads an injected clock
 - evaluation mutates no input (asserted per fixture)
 - the core imports no browser globals and has no dependencies
 - the core contains no application-specific terms or thresholds
-Gate: Do not implement evaluator until at least 3 real characterization cases are imported with expectations.
+## Checkpoint 3 — Nostr codecs (completed)
-Documentation: See `docs/phase1-summary.md` for full details.
+Delivered: bech32/NIP-19 (verified against the NIP-19 test vector), canonical v1
 on `kind:30078`, NIP-56 reports, NIP-51 mute lists, legacy administrative lists
 covering all five migration stages, replaceable selection with a deterministic
 same-timestamp tiebreak, injected signature verification.
-## Checkpoint 2 — Pure core implementation (in progress)
+## Checkpoint 4 — Runtime stores (completed)
-Delivered:
+Delivered: `GovernanceAdminStore`, `TrustGraphStore`, `ReportStore`,
- identifiers module (`packages/core/src/identifiers.js`)
+`TrustedMuteStore`, `PolicyStore`, `OverrideStore`, `GovernanceRuntime`.
 - targets module (`packages/core/src/targets.js`)
 - authority module (`packages/core/src/authority.js`)
 - policy module (`packages/core/src/policy.js`)
 - target creation, validation, and hierarchy utilities
 - role and capability management
 - policy definitions, decision making, and effect composition
 - comprehensive test suites for all modules
-Gate: Complete core implementation before moving to Nostr codecs.
+Acceptance: injected transport, storage, and clock; change-only emission; viewer
 switching clears viewer-scoped state while keeping operator seeds; subscriptions
 close on destroy; report subscriptions are chunked (200 per filter) rather than
 opened per target; author evidence is queryable in batches; expired mute lists
 prune against the injected clock.
-## Next checkpoint
+## Checkpoint 5 — Public commands (completed)
-Checkpoint 3 — Nostr codecs implementation (event parsing, legacy support)
+Delivered: contribution, role, policy, community-source, report, and override
 commands with stable error codes.
 Acceptance: every command checks capability locally before the signer is
 invoked, so an unauthorized actor cannot produce a signed mutation; revoked
 actors' contributions stop affecting effective state; protected actors are
 refused at the command boundary; first relay acceptance completes the command
 while remaining relay results stay observable.
 ## Checkpoint 6 — Reusability proof (completed)
 Delivered: `examples/commerce`, a marketplace built entirely on the public API,
 covering the ten proof-of-fit behaviors the migration plan requires — including
 that no core change was needed. Plus `README.md`, `docs/integration-guide.md`,
 and `examples/commerce/README.md`.
 ## Status
 CI gates green: reference guard, typecheck, 556 tests, per-package type build.
 ## Not done here
 Migration-plan Phases 6–11 operate on BitVid and BitRoad:
 - Phase 6 — BitVid compatibility facade and shadow mode
 - Phase 7 — cut over BitVid administrative state
 - Phase 8 — cut over BitVid reports and trust
 - Phase 9 — cut over BitVid policy
 - Phase 10 — validate through BitRoad itself
 - Phase 11 — remove duplicated BitVid logic
 The commerce example stands in for Phase 10's API-shape validation without
 touching the BitRoad repository.
@@ -0,0 +1,237 @@
 # Integration guide
 How to put this engine into an application that is not a video app.
 Everything application-specific lives in two places you write: an **adapter**
 (what is my object, in governance terms) and a **policy** (what does the
 evidence mean to me). Nothing else needs to change, and nothing in the core
 needs to know your application exists.
 ## 1. Decide what your objects are
 Three target types cover the model:
 | Target | Use for |
 | --- | --- |
 | `user` | Accounts: authors, sellers, reviewers, reporters, curators |
 | `event` | One exact, immutable event that should stay denied on its own |
 | `address` | A replaceable coordinate: a product across revisions, a storefront, an article |
 The distinction between `event` and `address` matters more than it looks.
 Denying an **address** survives the author republishing under a new event id.
 Denying an **event** does not — which is exactly what you want when only one
 revision was bad. Most objects want both.
 ## 2. Write an adapter
 ```js
 import { createApplicationAdapter } from "@nostr-governance/core";
 export const productAdapter = createApplicationAdapter({
  applicationId: "my-shop",
  // Every target whose status should reach this object.
  toTargets: (product) => [
    { type: "user", pubkey: product.sellerPubkey },
    { type: "event", id: product.id, author: product.sellerPubkey, kind: 30078 },
    { type: "address", kind: "30078", pubkey: product.sellerPubkey, identifier: product.sku },
  ],
  // The object's own identity, used to key its decision.
  getPrimaryTargetKey: (product) => `address:30078:${product.sellerPubkey}:${product.sku}`,
  // Optional: map the decision back into your shape.
  applyDecision: (product, decision) => ({
    ...product,
    hidden: decision.visibility.effect === "hide",
    rankPenalty: decision.ranking.weight,
    checkoutAllowed: (decision.transaction?.effect ?? "allow") === "allow",
  }),
 });
 ```
 Composition across an object's targets is ladder-maximum per dimension: the
 strictest verdict reaching the object wins. That is what makes "deny the seller"
 take their whole catalogue down without you writing any cascade logic.
 Be deliberate about what you *don't* include. A review should answer to its
 reviewer and its own event — not to the product it reviews, or a bad product
 would silence honest reviews of it.
 ## 3. Write a policy
 A policy is a set of named **profiles**, one per surface. Profiles read the same
 evidence and are free to reach different conclusions.
 ```js
 import { createPolicyDefinition } from "@nostr-governance/core";
 export const policy = createPolicyDefinition({
  id: "my-shop",
  version: "1.0.0",
  defaultProfile: "browse",
  profiles: {
    browse: {
      name: "browse",
      administrativeDeny: { visibility: "hide", interaction: "deny", transaction: "deny" },
      requireAllowlist: true,
      allowlistMiss: { visibility: "hide", interaction: "deny" },
      allowViewerOverride: false,
      reports: {
        malware: { hide: 1, transactionDeny: 1 },
        scam: { downrank: 1, restrict: 3, transactionDeny: 3 },
        default: { downrank: 2, warn: 4 },
      },
      mutes: { default: { downrank: 1 } },
      muteWindowSeconds: 60 * 24 * 60 * 60,
    },
    checkout: {
      name: "checkout",
      administrativeDeny: { visibility: "allow", transaction: "deny" },
      allowViewerOverride: false,
      reports: { malware: { transactionDeny: 1 }, scam: { transactionDeny: 3 } },
      mutes: {},
    },
  },
 });
 ```
 ### Profile options
 | Option | Effect |
 | --- | --- |
 | `administrativeDeny` | Effects applied when the target is administratively denied |
 | `viewerBlock` | Effects applied when the viewer personally blocks |
 | `requireAllowlist` / `allowlistMiss` | Enforce an allowlist on this surface |
 | `allowViewerOverride` | Whether a viewer may soften a decision |
 | `exposeEvidence` | Whether contributor pubkeys reach the consumer |
 | `bypassHide` / `bypassHideCeiling` | Cap a hide on discovery surfaces |
 | `disabled` | Turn governance off for this surface, with a reason |
 | `reports` / `mutes` | Category thresholds |
 | `muteWindowSeconds` | Ignore mutes older than this |
 ### Threshold gates
 A gate fires when `count >= threshold`. A threshold of `0` means **disabled**,
 not "always on" — so you can zero a gate out without it triggering on every
 target.
 ```
 downrank → ranking      warn, restrict, hide, deny → visibility
 requireExplicitAction, interactionDeny → interaction
 transactionReview, transactionDeny → transaction
 ```
 ## 4. Supply a transport
 The runtime depends on no relay pool. Implement three methods:
 ```js
 const transport = {
  async list(filters, options) { /* → NostrEvent[] */ },
  subscribe(filters, handlers, options) { /* → { close() } */ },
  async publish(event, options) {
    return { ok: true, accepted: ["wss://..."], failed: [] };
  },
 };
 ```
 `publish` should report **partial** acceptance honestly: `ok: true` with a
 non-empty `failed` list is a normal, successful outcome. The first acceptance
 means the event exists on the network; the remaining results are diagnostics.
 A signer (`getPublicKey`, `signEvent`) and storage (`read`, `write`, `remove`)
 follow the same injection pattern. In-memory versions ship for testing:
 ```js
 import { createMemoryTransport, createMemoryStorage } from "@nostr-governance/runtime";
 ```
 ## 5. Wire the pipeline
 ```js
 import { collectTargets, evaluateObject } from "@nostr-governance/core";
 runtime.setViewer(viewerPubkey);        // do this FIRST — it clears viewer state
 runtime.trust.setContacts(followList);  // then seed trust
 await runtime.loadAdministrativeState();
 runtime.setActiveTargets(collectTargets(products, productAdapter));
 runtime.subscribeToActiveTargetReports();
 const governed = products.map((product) =>
  productAdapter.applyDecision(
    product,
    evaluateObject(product, productAdapter, (target) =>
      runtime.evaluate(target, { profile: "browse" }),
    ),
  ),
 );
 ```
 Order matters in one place: `setViewer` clears viewer-scoped state by design, so
 seed contacts, blocks, and overrides *after* it, never before.
 ## 6. Define your roles
 Roles are application-defined bundles over a fixed capability vocabulary:
 ```js
 import { createRoleDefinition } from "@nostr-governance/core";
 const roles = {
  listing_moderator: createRoleDefinition("listing_moderator", [
    "contribute-event-deny",
    "contribute-address-deny",
    "review-evidence",
  ]),
  seller_moderator: createRoleDefinition("seller_moderator", [
    "contribute-user-deny",
    "review-evidence",
  ]),
 };
 ```
 If you pass a custom `roles` map to `setRoles`, it **replaces** the defaults —
 include `super_admin` yourself if you still want it. The root administrator
 always holds every capability regardless, so a misconfigured roster cannot lock
 you out of your own instance.
 Every command checks capability locally before the signer is invoked. An
 unauthorized actor cannot produce a signed mutation at all, rather than
 publishing one that quietly fails to take effect.
 ## Common mistakes
 **Recomputing policy in your view layer.** If your renderer is comparing report
 counts to thresholds, the extraction has failed. Consume `decision`.
 **Treating `downrank` as a filter.** Downranking is a sort input. A downranked
 item still appears and can still be acted on; conflating the two is what makes
 moderation feel like censorship to the people affected.
 **Skipping the checkout re-check.** Evaluate transaction-critical actions
 against their own profile at the moment of action. State moves between page
 render and button press.
 **Exposing evidence everywhere.** `exposeEvidence` is off by default for a
 reason: public surfaces get counts, appeal surfaces get identities.
 **Assuming an allowlist implies trust.** Being allowed to publish grants no
 trust, no moderator authority, and no immunity from personal blocks. The two
 systems are deliberately separate.
 ## Testing your integration
 The conformance harness takes JSON fixtures and asserts decisions:
 ```js
 import { runConformanceCase } from "@nostr-governance/testing/conformance";
 const { passed, mismatches } = runConformanceCase(fixture, policy);
 ```
 Expectations are partial — assert the dimensions your case is about and stay
 silent about the rest. See `fixtures/bitvid/cases/` for the shape and
 `examples/commerce/test/proof-of-fit.test.js` for a full application suite.
@@ -0,0 +1,68 @@
 # Commerce proof-of-fit
 A marketplace built on `nostr-governance`, using only the published API.
 The point is not to ship marketplace moderation. It is to prove the engine did
 not accidentally stay video-specific during extraction: if a commerce consumer
 needs a change to `@nostr-governance/core`, the abstraction is wrong.
 ## What it demonstrates
 The migration plan lists ten behaviors a commerce consumer should show before
 `1.0.0`. Each is a numbered block in
 [`test/proof-of-fit.test.js`](test/proof-of-fit.test.js):
 1. **Seller allowlist mode** — unlisted sellers are hidden from discovery, but
   the allowlist is not enforced at checkout
 2. **Administrative seller denial** — takes the seller's whole catalogue down
   while leaving them their own dashboard view
 3. **Product-address denial** — survives the seller republishing under a new
   event id, and does not touch their other listings
 4. **Exact-event denial** — affects only the named revision
 5. **Trusted scam-report downranking** — one report reorders, three block
   checkout; nothing is hidden on a single signal
 6. **Malware checkout denial** — one trusted malware report blocks the sale,
   while three "misleading" reports do not
 7. **Moderator capability checks** — a listing moderator cannot deny a seller;
   a seller moderator cannot deny a listing address
 8. **Community curator ingestion** — curated denials are honored, curator
   contributions beyond their capability are dropped, and the root cannot be
   denied through a curated list
 9. **Seller-dashboard explanation** — the seller sees who reported and why;
   public surfaces see only counts
 10. **No core changes required** — four different verdicts for one product from
    one snapshot, using only exported functions
 ## Files
 | File | Contents |
 | --- | --- |
 | `src/policy.js` | Marketplace thresholds and roles. None of these numbers exist in the core. |
 | `src/adapters.js` | Products, storefronts, reviews, and sellers as governance targets. |
 | `src/marketplace.js` | Feed pipeline, grid ordering, checkout, seller explanation. |
 ## The shape worth copying
 A product answers to three targets — its seller, its exact event, and its
 address coordinate — and the composed decision is the strictest verdict reaching
 it. That is what makes "deny the seller" remove every listing without a line of
 cascade logic in the application.
 One product, one snapshot, four surfaces:
 | Surface | Visibility | Transaction |
 | --- | --- | --- |
 | `public-marketplace` | `restrict` | `deny` |
 | `product-detail` | `restrict`, overridable | `deny` |
 | `checkout` | `allow` | `deny` |
 | `seller-dashboard` | `restrict`, with evidence | `deny` |
 Reviews deliberately answer to their reviewer and their own event — never to the
 product they review. Otherwise denying a bad product would silence the reviews
 warning people about it.
 ## Run it
 ```bash
 npm test -- examples/commerce
 ```
@@ -0,0 +1,15 @@
 {
  "name": "@nostr-governance/example-commerce",
  "version": "0.1.0",
  "type": "module",
  "private": true,
  "description": "Proof-of-fit: the governance engine driving a marketplace, using only the public API.",
  "main": "src/marketplace.js",
  "scripts": {
    "test": "vitest run"
  },
  "dependencies": {
    "@nostr-governance/core": "*",
    "@nostr-governance/runtime": "*"
  }
 }
@@ -0,0 +1,156 @@
 // Commerce application adapters.
 //
 // Each adapter answers two questions: which governance targets stand behind
 // this object, and what does a decision mean for it. Note what is absent —
 // no thresholds, no precedence rules, no policy logic. Those live in the
 // policy definition and the engine respectively.
 import { createApplicationAdapter } from "@nostr-governance/core";
 /** Parameterized-replaceable kind used for commerce documents in this example. */
 export const PRODUCT_KIND = 30078;
 /**
 * @typedef {Object} Product
 * @property {string} id - Event id of the current revision
 * @property {string} sellerPubkey
 * @property {string} identifier - d-tag, stable across revisions
 * @property {string} title
 * @property {number} priceSats
 */
 /**
 * @typedef {Object} Storefront
 * @property {string} id
 * @property {string} sellerPubkey
 * @property {string} identifier
 * @property {string} name
 */
 /**
 * @typedef {Object} Review
 * @property {string} id
 * @property {string} reviewerPubkey
 * @property {string} productIdentifier
 * @property {number} rating
 */
 /**
 * Products answer to three targets.
 *
 * The address is what persists across revisions: denying it survives the seller
 * republishing the listing under a new event id, which denying the exact event
 * would not. Both are kept, because an exact-event denial must also stay
 * possible for the case where only one revision was bad.
 *
 * @type {import('@nostr-governance/core').GovernanceApplicationAdapter<Product>}
 */
 export const productAdapter = createApplicationAdapter({
  applicationId: "commerce-example",
  toTargets(product) {
    return [
      { type: "user", pubkey: product.sellerPubkey },
      { type: "event", id: product.id, author: product.sellerPubkey, kind: PRODUCT_KIND },
      {
        type: "address",
        kind: String(PRODUCT_KIND),
        pubkey: product.sellerPubkey,
        identifier: product.identifier,
      },
    ];
  },
  getPrimaryTargetKey(product) {
    return `address:${PRODUCT_KIND}:${product.sellerPubkey}:${product.identifier}`;
  },
  applyDecision(product, decision) {
    return {
      ...product,
      moderation: {
        visible: decision.visibility.effect !== "hide" && decision.visibility.effect !== "deny",
        warn: decision.visibility.effect === "warn",
        blurred: decision.visibility.effect === "restrict",
        downranked: decision.ranking.effect === "downrank",
        rankPenalty: decision.ranking.weight,
        checkoutAllowed: (decision.transaction?.effect ?? "allow") === "allow",
        checkoutNeedsReview: decision.transaction?.effect === "require-review",
        reasons: decision.reasons.map((reason) => reason.id),
      },
    };
  },
 });
 /**
 * Storefronts answer to the seller, the storefront address, and the exact event.
 * @type {import('@nostr-governance/core').GovernanceApplicationAdapter<Storefront>}
 */
 export const storefrontAdapter = createApplicationAdapter({
  applicationId: "commerce-example",
  toTargets(storefront) {
    return [
      { type: "user", pubkey: storefront.sellerPubkey },
      { type: "event", id: storefront.id, author: storefront.sellerPubkey, kind: PRODUCT_KIND },
      {
        type: "address",
        kind: String(PRODUCT_KIND),
        pubkey: storefront.sellerPubkey,
        identifier: storefront.identifier,
      },
    ];
  },
  getPrimaryTargetKey(storefront) {
    return `address:${PRODUCT_KIND}:${storefront.sellerPubkey}:${storefront.identifier}`;
  },
 });
 /**
 * Reviews answer to the reviewer and the exact review event.
 *
 * Deliberately not to the reviewed product: a bad product should not silence
 * honest reviews of it, which is exactly the outcome an over-broad target list
 * would produce.
 *
 * @type {import('@nostr-governance/core').GovernanceApplicationAdapter<Review>}
 */
 export const reviewAdapter = createApplicationAdapter({
  applicationId: "commerce-example",
  toTargets(review) {
    return [
      { type: "user", pubkey: review.reviewerPubkey },
      { type: "event", id: review.id, author: review.reviewerPubkey, kind: PRODUCT_KIND },
    ];
  },
  getPrimaryTargetKey(review) {
    return `event:${review.id}`;
  },
  applyDecision(review, decision) {
    return {
      ...review,
      suppressed: decision.visibility.effect === "hide" || decision.visibility.effect === "deny",
      downranked: decision.ranking.effect === "downrank",
    };
  },
 });
 /**
 * Sellers answer only to their own user target.
 * @type {import('@nostr-governance/core').GovernanceApplicationAdapter<{ pubkey: string }>}
 */
 export const sellerAdapter = createApplicationAdapter({
  applicationId: "commerce-example",
  toTargets(seller) {
    return [{ type: "user", pubkey: seller.pubkey }];
  },
  getPrimaryTargetKey(seller) {
    return `user:${seller.pubkey}`;
  },
 });
@@ -0,0 +1,107 @@
 // Marketplace pipeline.
 //
 // The application's job is reduced to: collect targets, ask the engine, apply
 // the answer. It computes no thresholds and reimplements no precedence — which
 // is the property the extraction is meant to guarantee.
 import { collectTargets, evaluateObject } from "@nostr-governance/core";
 import { productAdapter } from "./adapters.js";
 /**
 * @typedef {import('./adapters.js').Product} Product
 */
 /**
 * Govern a product feed for a surface.
 *
 * Targets are collected first and handed to the runtime in one call, so a
 * hundred-item page opens a bounded number of subscriptions rather than one per
 * listing.
 *
 * @param {Product[]} products
 * @param {import('@nostr-governance/runtime').GovernanceRuntime} runtime
 * @param {string} profile
 * @returns {Array<Product & { moderation: any }>}
 */
 export function governProductFeed(products, runtime, profile) {
  runtime.setActiveTargets(collectTargets(products, productAdapter));
  return products.map((product) => {
    const decision = evaluateObject(product, productAdapter, (target) =>
      runtime.evaluate(target, { profile }),
    );
    return /** @type {any} */ (productAdapter.applyDecision?.(product, decision) ?? product);
  });
 }
 /**
 * Render a marketplace grid: drop hidden listings, order downranked ones last.
 *
 * Downranking is a sort input, not a filter. A downranked listing still appears
 * and can still be bought — conflating the two is what makes moderation feel
 * like censorship to sellers.
 *
 * @param {Product[]} products
 * @param {import('@nostr-governance/runtime').GovernanceRuntime} runtime
 * @returns {Array<Product & { moderation: any }>}
 */
 export function buildMarketplaceGrid(products, runtime) {
  return governProductFeed(products, runtime, "public-marketplace")
    .filter((product) => product.moderation.visible)
    .sort((a, b) => a.moderation.rankPenalty - b.moderation.rankPenalty);
 }
 /**
 * @typedef {Object} CheckoutVerdict
 * @property {boolean} allowed
 * @property {boolean} needsReview
 * @property {string[]} reasons
 */
 /**
 * Check a product at checkout.
 *
 * Evaluated freshly against the checkout profile rather than reusing the
 * listing page's decision: state may have changed since the page rendered, and
 * checkout is the point where being wrong actually costs someone money.
 *
 * @param {Product} product
 * @param {import('@nostr-governance/runtime').GovernanceRuntime} runtime
 * @returns {CheckoutVerdict}
 */
 export function checkoutVerdict(product, runtime) {
  const decision = evaluateObject(product, productAdapter, (target) =>
    runtime.evaluate(target, { profile: "checkout" }),
  );
  const effect = decision.transaction?.effect ?? "allow";
  return {
    allowed: effect === "allow",
    needsReview: effect === "require-review",
    reasons: decision.reasons.map((reason) => reason.id),
  };
 }
 /**
 * Explain a product's status to its seller.
 *
 * The seller-dashboard profile exposes evidence, so this is the one surface
 * that can answer "how many people reported me, and for what".
 *
 * @param {Product} product
 * @param {import('@nostr-governance/runtime').GovernanceRuntime} runtime
 * @returns {{ visible: boolean, sellable: boolean, reasons: string[], evidence: any }}
 */
 export function explainToSeller(product, runtime) {
  const decision = evaluateObject(product, productAdapter, (target) =>
    runtime.evaluate(target, { profile: "seller-dashboard" }),
  );
  return {
    visible: decision.visibility.effect !== "hide" && decision.visibility.effect !== "deny",
    sellable: (decision.transaction?.effect ?? "allow") === "allow",
    reasons: decision.reasons.map((reason) => reason.id),
    evidence: decision.evidence,
  };
 }
@@ -0,0 +1,144 @@
 // Commerce policy profiles.
 //
 // This example exists to prove the engine is not video-specific. Nothing here
 // touches @nostr-governance/core internals: it is built entirely from the
 // public API, and the core carries none of these numbers.
 //
 // The interesting property is that one product can simultaneously be visible to
 // its seller, downranked in discovery, inspectable on its detail page, and
 // blocked from checkout — four different answers from one decision, which a
 // single `hidden` boolean could not express.
 import { createPolicyDefinition, createRoleDefinition } from "@nostr-governance/core";
 /**
 * Category thresholds for a marketplace.
 *
 * Malware is treated far more harshly than misleading copy: one trusted report
 * blocks checkout, because the cost of a false negative is a compromised buyer,
 * while an over-eager `misleading` threshold would just suppress lawful listings.
 *
 * @type {Record<string, import('@nostr-governance/core').CategoryThresholds>}
 */
 export const MARKETPLACE_REPORT_THRESHOLDS = {
  scam: {
    downrank: 1,
    warn: 2,
    restrict: 3,
    hide: 5,
    transactionReview: 2,
    transactionDeny: 3,
  },
  malware: {
    warn: 1,
    restrict: 1,
    hide: 2,
    transactionDeny: 1,
  },
  misleading: {
    downrank: 2,
    warn: 3,
    restrict: 5,
    hide: 8,
  },
  "not-as-described": {
    downrank: 2,
    warn: 4,
    transactionReview: 5,
  },
  default: {
    downrank: 2,
    warn: 4,
  },
 };
 /** Trusted mutes downrank a seller but never block a sale on their own. */
 const MARKETPLACE_MUTE_THRESHOLDS = {
  default: { downrank: 1 },
 };
 /**
 * The marketplace policy.
 *
 * Every surface reads the same evidence and reaches a different conclusion,
 * which is the whole point of profiles.
 */
 export const COMMERCE_POLICY = createPolicyDefinition({
  id: "commerce-example",
  name: "Commerce example",
  description: "Marketplace policy demonstrating the engine outside a video application.",
  version: "1.0.0",
  defaultProfile: "public-marketplace",
  profiles: {
    // Discovery: denied sellers disappear entirely and cannot transact.
    "public-marketplace": {
      name: "public-marketplace",
      administrativeDeny: { visibility: "hide", interaction: "deny", transaction: "deny" },
      viewerBlock: { visibility: "hide", interaction: "deny" },
      allowViewerOverride: false,
      requireAllowlist: true,
      allowlistMiss: { visibility: "hide", interaction: "deny", transaction: "deny" },
      reports: MARKETPLACE_REPORT_THRESHOLDS,
      mutes: MARKETPLACE_MUTE_THRESHOLDS,
    },
    // Detail page: a shopper who followed a direct link may still inspect the
    // listing behind a warning, but cannot buy it.
    "product-detail": {
      name: "product-detail",
      administrativeDeny: { visibility: "restrict", interaction: "require-explicit-action", transaction: "deny" },
      viewerBlock: { visibility: "hide", interaction: "deny" },
      allowViewerOverride: true,
      reports: MARKETPLACE_REPORT_THRESHOLDS,
      mutes: MARKETPLACE_MUTE_THRESHOLDS,
    },
    // Checkout: visibility is irrelevant; only the transaction verdict matters,
    // and it is re-checked here rather than trusted from the listing page.
    checkout: {
      name: "checkout",
      administrativeDeny: { visibility: "allow", transaction: "deny" },
      allowViewerOverride: false,
      reports: MARKETPLACE_REPORT_THRESHOLDS,
      mutes: {},
    },
    // Seller dashboard: the seller can always see their own listing and is told
    // why it is restricted. An appeals screen that hides the evidence is useless.
    "seller-dashboard": {
      name: "seller-dashboard",
      administrativeDeny: { visibility: "warn", interaction: "allow", transaction: "deny" },
      allowViewerOverride: false,
      exposeEvidence: true,
      reports: MARKETPLACE_REPORT_THRESHOLDS,
      mutes: MARKETPLACE_MUTE_THRESHOLDS,
    },
  },
 });
 /**
 * Marketplace-specific roles, built from the generic capability vocabulary.
 *
 * These roles do not exist in the core; an application invents the roles it
 * needs and the engine enforces them.
 */
 export const COMMERCE_ROLES = {
  listing_moderator: createRoleDefinition("listing_moderator", [
    "contribute-event-deny",
    "contribute-address-deny",
    "review-evidence",
  ]),
  seller_moderator: createRoleDefinition("seller_moderator", [
    "contribute-user-deny",
    "review-evidence",
  ]),
  community_curator: createRoleDefinition("community_curator", ["contribute-user-deny"]),
 };
 /**
 * Role capability map in the shape createAuthorityState expects.
 * @type {Record<string, import('@nostr-governance/core').GovernanceCapability[]>}
 */
 export const COMMERCE_ROLE_CAPABILITIES = Object.fromEntries(
  Object.values(COMMERCE_ROLES).map((role) => [role.name, role.capabilities]),
 );
@@ -0,0 +1,508 @@
 // Commerce proof-of-fit.
 //
 // The plan requires a commerce consumer to demonstrate ten behaviors before the
 // package reaches 1.0.0, the tenth being that none of it needs a change to the
 // generic core. Each numbered case below is one of those requirements.
 import { describe, expect, it } from "vitest";
 import { createCommands, createGovernanceRuntime, createMemoryTransport } from "@nostr-governance/runtime";
 import { COMMERCE_POLICY, COMMERCE_ROLE_CAPABILITIES } from "../src/policy.js";
 import { productAdapter, reviewAdapter, sellerAdapter } from "../src/adapters.js";
 import {
  buildMarketplaceGrid,
  checkoutVerdict,
  explainToSeller,
  governProductFeed,
 } from "../src/marketplace.js";
 const ROOT = "a1".repeat(32);
 const LISTING_MOD = "b2".repeat(32);
 const SELLER_MOD = "c3".repeat(32);
 const CURATOR = "e5".repeat(32);
 const SELLER = "d4".repeat(32);
 const OTHER_SELLER = "f6".repeat(32);
 const BUYER = "ab".repeat(32);
 const NOW = 1_750_000_000;
 const trusted = (index) => index.toString(16).padStart(2, "0").repeat(32);
 const TRUSTED = Array.from({ length: 8 }, (_, index) => trusted(index + 1));
 /** @type {import('../src/adapters.js').Product} */
 const PRODUCT = {
  id: "1b".repeat(32),
  sellerPubkey: SELLER,
  identifier: "sku-001",
  title: "Widget",
  priceSats: 1000,
 };
 /** @type {import('../src/adapters.js').Product} */
 const OTHER_PRODUCT = {
  id: "2c".repeat(32),
  sellerPubkey: SELLER,
  identifier: "sku-002",
  title: "Gadget",
  priceSats: 2000,
 };
 /** @type {import('../src/adapters.js').Product} */
 const RIVAL_PRODUCT = {
  id: "3d".repeat(32),
  sellerPubkey: OTHER_SELLER,
  identifier: "sku-100",
  title: "Rival widget",
  priceSats: 900,
 };
 function setup({ allowlisted = [SELLER, OTHER_SELLER] } = {}) {
  const runtime = createGovernanceRuntime({
    applicationId: "commerce-example",
    namespace: "commerce",
    transport: createMemoryTransport(),
    policy: COMMERCE_POLICY,
    now: () => NOW,
  });
  runtime.admin.setRoles({
    root: ROOT,
    roles: COMMERCE_ROLE_CAPABILITIES,
    actors: {
      [ROOT]: ["super_admin"],
      [LISTING_MOD]: ["listing_moderator"],
      [SELLER_MOD]: ["seller_moderator"],
      [CURATOR]: ["community_curator"],
    },
  });
  // Roles here are application-defined, so super_admin needs its default bundle
  // restored alongside them.
  runtime.admin.setRoles({
    root: ROOT,
    roles: {
      ...COMMERCE_ROLE_CAPABILITIES,
      super_admin: [
        "manage-roles",
        "manage-policy",
        "manage-community-sources",
        "contribute-user-allow",
        "contribute-user-deny",
        "contribute-event-deny",
        "contribute-address-deny",
        "contribute-trust-seed",
        "review-evidence",
      ],
    },
    actors: {
      [ROOT]: ["super_admin"],
      [LISTING_MOD]: ["listing_moderator"],
      [SELLER_MOD]: ["seller_moderator"],
      [CURATOR]: ["community_curator"],
    },
  });
  if (allowlisted.length) {
    runtime.admin.upsertContribution({
      actor: ROOT,
      kind: "user-allow",
      targets: allowlisted.map((pubkey) => ({ type: "user", pubkey })),
      createdAt: NOW,
    });
  }
  // Set the viewer first: switching viewers clears viewer-scoped trust state,
  // so seeding contacts beforehand would be wiped.
  runtime.setViewer(BUYER);
  runtime.trust.setContacts(TRUSTED);
  return { runtime, commands: createCommands(runtime) };
 }
 /** Report a target from `count` distinct trusted accounts. */
 function reportFrom(runtime, targetKey, category, count) {
  for (const reporter of TRUSTED.slice(0, count)) {
    runtime.reports.ingest({ reporter, category, createdAt: NOW - 100 }, targetKey);
  }
 }
 const productAddressKey = (product) =>
  `address:30078:${product.sellerPubkey}:${product.identifier}`;
 describe("1. seller allowlist mode", () => {
  it("hides a seller who is not allowlisted", () => {
    const { runtime } = setup({ allowlisted: [] });
    const [governed] = governProductFeed([PRODUCT], runtime, "public-marketplace");
    expect(governed.moderation.visible).toBe(false);
    expect(governed.moderation.reasons).toContain("allowlist-miss");
  });
  it("shows an allowlisted seller", () => {
    const { runtime } = setup();
    const [governed] = governProductFeed([PRODUCT], runtime, "public-marketplace");
    expect(governed.moderation.visible).toBe(true);
  });
  it("does not enforce the allowlist on checkout", () => {
    const { runtime } = setup({ allowlisted: [] });
    expect(checkoutVerdict(PRODUCT, runtime).allowed).toBe(true);
  });
 });
 describe("2. administrative seller denial", () => {
  it("removes every product from a denied seller", () => {
    const { runtime } = setup();
    runtime.admin.upsertContribution({
      actor: SELLER_MOD,
      kind: "user-deny",
      targets: [{ type: "user", pubkey: SELLER }],
      createdAt: NOW,
    });
    const grid = buildMarketplaceGrid([PRODUCT, OTHER_PRODUCT, RIVAL_PRODUCT], runtime);
    expect(grid.map((product) => product.identifier)).toEqual(["sku-100"]);
  });
  it("blocks checkout for the denied seller", () => {
    const { runtime } = setup();
    runtime.admin.upsertContribution({
      actor: SELLER_MOD,
      kind: "user-deny",
      targets: [{ type: "user", pubkey: SELLER }],
      createdAt: NOW,
    });
    expect(checkoutVerdict(PRODUCT, runtime).allowed).toBe(false);
  });
  it("leaves the seller their own dashboard view", () => {
    const { runtime } = setup();
    runtime.admin.upsertContribution({
      actor: SELLER_MOD,
      kind: "user-deny",
      targets: [{ type: "user", pubkey: SELLER }],
      createdAt: NOW,
    });
    const explanation = explainToSeller(PRODUCT, runtime);
    expect(explanation.visible).toBe(true);
    expect(explanation.sellable).toBe(false);
    expect(explanation.reasons).toContain("admin-user-deny");
  });
 });
 describe("3. product-address denial", () => {
  it("denies one listing without touching the seller's others", () => {
    const { runtime } = setup();
    runtime.admin.upsertContribution({
      actor: LISTING_MOD,
      kind: "address-deny",
      targets: [
        { type: "address", kind: "30078", pubkey: SELLER, identifier: PRODUCT.identifier },
      ],
      createdAt: NOW,
    });
    const grid = buildMarketplaceGrid([PRODUCT, OTHER_PRODUCT], runtime);
    expect(grid.map((product) => product.identifier)).toEqual(["sku-002"]);
  });
  it("persists across a revision that changes the event id", () => {
    const { runtime } = setup();
    runtime.admin.upsertContribution({
      actor: LISTING_MOD,
      kind: "address-deny",
      targets: [
        { type: "address", kind: "30078", pubkey: SELLER, identifier: PRODUCT.identifier },
      ],
      createdAt: NOW,
    });
    const republished = { ...PRODUCT, id: "99".repeat(32), title: "Widget v2" };
    const [governed] = governProductFeed([republished], runtime, "public-marketplace");
    expect(governed.moderation.visible).toBe(false);
  });
 });
 describe("4. exact-event denial", () => {
  it("affects only the named revision", () => {
    const { runtime } = setup();
    runtime.admin.upsertContribution({
      actor: LISTING_MOD,
      kind: "event-deny",
      targets: [{ type: "event", id: PRODUCT.id }],
      createdAt: NOW,
    });
    const [denied] = governProductFeed([PRODUCT], runtime, "public-marketplace");
    expect(denied.moderation.visible).toBe(false);
    const republished = { ...PRODUCT, id: "99".repeat(32) };
    const [fresh] = governProductFeed([republished], runtime, "public-marketplace");
    expect(fresh.moderation.visible).toBe(true);
  });
 });
 describe("5. trusted scam-report downranking", () => {
  it("downranks on a single trusted scam report without hiding", () => {
    const { runtime } = setup();
    reportFrom(runtime, productAddressKey(PRODUCT), "scam", 1);
    const [governed] = governProductFeed([PRODUCT], runtime, "public-marketplace");
    expect(governed.moderation.downranked).toBe(true);
    expect(governed.moderation.visible).toBe(true);
  });
  it("orders downranked listings after clean ones", () => {
    const { runtime } = setup();
    reportFrom(runtime, productAddressKey(PRODUCT), "scam", 1);
    const grid = buildMarketplaceGrid([PRODUCT, RIVAL_PRODUCT], runtime);
    expect(grid.map((product) => product.identifier)).toEqual(["sku-100", "sku-001"]);
  });
  it("escalates to review then denial as reports accumulate", () => {
    const { runtime } = setup();
    reportFrom(runtime, productAddressKey(PRODUCT), "scam", 2);
    expect(checkoutVerdict(PRODUCT, runtime).needsReview).toBe(true);
    reportFrom(runtime, productAddressKey(PRODUCT), "scam", 3);
    expect(checkoutVerdict(PRODUCT, runtime).allowed).toBe(false);
  });
 });
 describe("6. malware-based checkout denial", () => {
  it("blocks checkout on a single trusted malware report", () => {
    const { runtime } = setup();
    reportFrom(runtime, productAddressKey(PRODUCT), "malware", 1);
    expect(checkoutVerdict(PRODUCT, runtime).allowed).toBe(false);
  });
  it("treats malware far more harshly than misleading copy", () => {
    const { runtime } = setup();
    reportFrom(runtime, productAddressKey(PRODUCT), "misleading", 3);
    expect(checkoutVerdict(PRODUCT, runtime).allowed).toBe(true);
    reportFrom(runtime, productAddressKey(RIVAL_PRODUCT), "malware", 1);
    expect(checkoutVerdict(RIVAL_PRODUCT, runtime).allowed).toBe(false);
  });
 });
 describe("7. moderator capability checks", () => {
  const signerFor = (pubkey) => ({
    async getPublicKey() {
      return pubkey;
    },
    async signEvent(template) {
      return { ...template, id: "ff".repeat(32), pubkey, sig: "00".repeat(64) };
    },
  });
  function commandsAs(pubkey) {
    const runtime = createGovernanceRuntime({
      applicationId: "commerce-example",
      namespace: "commerce",
      transport: createMemoryTransport(),
      signer: signerFor(pubkey),
      policy: COMMERCE_POLICY,
      now: () => NOW,
    });
    runtime.admin.setRoles({
      root: ROOT,
      roles: COMMERCE_ROLE_CAPABILITIES,
      actors: {
        [LISTING_MOD]: ["listing_moderator"],
        [SELLER_MOD]: ["seller_moderator"],
        [CURATOR]: ["community_curator"],
      },
    });
    return createCommands(runtime);
  }
  it("lets a listing moderator deny an address", async () => {
    expect((await commandsAs(LISTING_MOD).denyAddress("30078", SELLER, "sku-001")).ok).toBe(true);
  });
  it("stops a listing moderator denying a seller", async () => {
    expect((await commandsAs(LISTING_MOD).denyUser(SELLER)).code).toBe("not-authorized");
  });
  it("lets a seller moderator deny a seller", async () => {
    expect((await commandsAs(SELLER_MOD).denyUser(SELLER)).ok).toBe(true);
  });
  it("stops a seller moderator denying a listing address", async () => {
    expect((await commandsAs(SELLER_MOD).denyAddress("30078", SELLER, "sku-001")).code).toBe(
      "not-authorized",
    );
  });
  it("stops a curator denying an exact event", async () => {
    expect((await commandsAs(CURATOR).denyEvent("1b".repeat(32))).code).toBe("not-authorized");
  });
  it("stops any moderator changing roles", async () => {
    expect((await commandsAs(SELLER_MOD).setRoles({ actors: {} })).code).toBe("not-authorized");
  });
 });
 describe("8. community curator ingestion", () => {
  it("honors a curator's seller denial", () => {
    const { runtime } = setup();
    runtime.admin.upsertContribution({
      actor: CURATOR,
      kind: "user-deny",
      source: "curated-scam-list",
      targets: [{ type: "user", pubkey: SELLER }],
      createdAt: NOW,
    });
    const [governed] = governProductFeed([PRODUCT], runtime, "public-marketplace");
    expect(governed.moderation.visible).toBe(false);
    expect(governed.moderation.reasons).toContain("community-user-deny");
  });
  it("ignores a curator contribution beyond their capability", () => {
    const { runtime } = setup();
    runtime.admin.upsertContribution({
      actor: CURATOR,
      kind: "address-deny",
      source: "curated-scam-list",
      targets: [
        { type: "address", kind: "30078", pubkey: SELLER, identifier: PRODUCT.identifier },
      ],
      createdAt: NOW,
    });
    const [governed] = governProductFeed([PRODUCT], runtime, "public-marketplace");
    expect(governed.moderation.visible).toBe(true);
  });
  it("cannot deny the root through a curated list", () => {
    const { runtime } = setup();
    runtime.admin.upsertContribution({
      actor: CURATOR,
      kind: "user-deny",
      source: "hostile-list",
      targets: [{ type: "user", pubkey: ROOT }],
      createdAt: NOW,
    });
    expect(runtime.admin.state.userDeny.has(`user:${ROOT}`)).toBe(false);
  });
 });
 describe("9. seller-dashboard explanation", () => {
  it("exposes evidence counts to the seller", () => {
    const { runtime } = setup();
    reportFrom(runtime, productAddressKey(PRODUCT), "scam", 3);
    const explanation = explainToSeller(PRODUCT, runtime);
    expect(explanation.evidence.trustedReportTotal).toBe(3);
    expect(explanation.evidence.trustedReportsByCategory.scam).toBe(3);
    expect(explanation.evidence.trustedReporterPubkeys).toHaveLength(3);
  });
  it("withholds reporter identities from public surfaces", () => {
    const { runtime } = setup();
    reportFrom(runtime, productAddressKey(PRODUCT), "scam", 3);
    const decision = runtime.evaluate(
      { type: "address", kind: "30078", pubkey: SELLER, identifier: PRODUCT.identifier },
      { profile: "public-marketplace" },
    );
    expect(decision.evidence?.trustedReportTotal).toBe(3);
    expect(decision.evidence?.trustedReporterPubkeys).toEqual([]);
  });
 });
 describe("10. no core changes required", () => {
  it("expresses four different verdicts for one product from one snapshot", () => {
    const { runtime } = setup();
    reportFrom(runtime, productAddressKey(PRODUCT), "scam", 3);
    const target = {
      type: "address",
      kind: "30078",
      pubkey: SELLER,
      identifier: PRODUCT.identifier,
    };
    expect(runtime.evaluate(target, { profile: "public-marketplace" }).visibility.effect).toBe(
      "restrict",
    );
    expect(runtime.evaluate(target, { profile: "seller-dashboard" }).visibility.effect).toBe(
      "restrict",
    );
    expect(runtime.evaluate(target, { profile: "checkout" }).transaction?.effect).toBe("deny");
    expect(runtime.evaluate(target, { profile: "product-detail" }).visibility.overridable).toBe(true);
  });
  it("governs reviews without letting a bad product silence them", () => {
    const { runtime } = setup();
    runtime.admin.upsertContribution({
      actor: SELLER_MOD,
      kind: "user-deny",
      targets: [{ type: "user", pubkey: SELLER }],
      createdAt: NOW,
    });
    const review = {
      id: "7f".repeat(32),
      reviewerPubkey: BUYER,
      productIdentifier: PRODUCT.identifier,
      rating: 1,
    };
    const decision = runtime.evaluate(reviewAdapter.toTargets(review)[0], {
      profile: "product-detail",
    });
    expect(decision.visibility.effect).not.toBe("hide");
  });
  it("uses only the published core API", async () => {
    // Every import in this example resolves through a package entry point; if
    // one reached into a package's internals, the reference guard and this
    // assertion are what would catch it.
    const core = await import("@nostr-governance/core");
    for (const name of [
      "createApplicationAdapter",
      "evaluateObject",
      "collectTargets",
      "createPolicyDefinition",
      "createRoleDefinition",
    ]) {
      expect(typeof core[name]).toBe("function");
    }
  });
  it("governs a seller through the same engine as a product", () => {
    const { runtime } = setup();
    runtime.admin.upsertContribution({
      actor: SELLER_MOD,
      kind: "user-deny",
      targets: [{ type: "user", pubkey: SELLER }],
      createdAt: NOW,
    });
    const decision = runtime.evaluate(sellerAdapter.toTargets({ pubkey: SELLER })[0], {
      profile: "public-marketplace",
    });
    expect(decision.visibility.effect).toBe("hide");
  });
 });
 describe("adapter composition", () => {
  it("reports decisions against the product's own identity", () => {
    const { runtime } = setup();
    const decision = runtime.evaluate(productAdapter.toTargets(PRODUCT)[2], {
      profile: "public-marketplace",
    });
    expect(decision.key).toBe(productAddressKey(PRODUCT));
  });
  it("collects deduplicated targets across a feed", () => {
    const { runtime } = setup();
    governProductFeed([PRODUCT, OTHER_PRODUCT], runtime, "public-marketplace");
    // Two products from one seller: 2 events + 2 addresses + 1 shared seller.
    expect(runtime.activeTargets.size).toBe(5);
  });
 });
@@ -8,7 +8,8 @@
      "name": "nostr-governance",
      "version": "0.1.0",
      "workspaces": [
-        "packages/*"
+        "packages/*",
        "examples/*"
      ],
      "devDependencies": {
        "@types/node": "^22.10.0",
@@ -19,6 +20,14 @@
        "node": ">=22"
      }
    },
    "examples/commerce": {
      "name": "@nostr-governance/example-commerce",
      "version": "0.1.0",
      "dependencies": {
        "@nostr-governance/core": "*",
        "@nostr-governance/runtime": "*"
      }
    },
    "node_modules/@esbuild/aix-ppc64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.21.5.tgz",
@@ -438,6 +447,10 @@
      "resolved": "packages/core",
      "link": true
    },
    "node_modules/@nostr-governance/example-commerce": {
      "resolved": "examples/commerce",
      "link": true
    },
    "node_modules/@nostr-governance/nostr": {
      "resolved": "packages/nostr",
      "link": true
@@ -18,7 +18,8 @@
    "node": ">=22"
  },
  "workspaces": [
-    "packages/*"
+    "packages/*",
    "examples/*"
  ],
  "devDependencies": {
    "@types/node": "^22.10.0",
@@ -0,0 +1,117 @@
 // Application adapter contract.
 //
 // An adapter is how an application says "here is what my object is, in
 // governance terms" and "here is what a decision means to me". Everything
 // application-specific lives in the adapter; nothing application-specific lives
 // in the engine. This is the seam that lets one engine serve a video app and a
 // marketplace without either leaking into the other.
 import { getTargetKey } from "./identifiers.js";
 import { isValidTarget } from "./targets.js";
 import { composeDecisions } from "./policy.js";
 /**
 * @typedef {import('./identifiers.js').GovernanceTarget} GovernanceTarget
 * @typedef {import('./policy.js').GovernanceDecision} GovernanceDecision
 */
 /**
 * @template TObject
 * @typedef {Object} GovernanceApplicationAdapter
 * @property {string} applicationId
 * @property {(object: TObject) => GovernanceTarget[]} toTargets - Every target that governs this object
 * @property {(object: TObject) => string} getPrimaryTargetKey - The object's own identity
 * @property {(object: TObject, decision: GovernanceDecision) => TObject} [applyDecision] - Map a decision back into application shape
 */
 /**
 * Define an adapter, validating its required members.
 * @template TObject
 * @param {GovernanceApplicationAdapter<TObject>} adapter
 * @returns {GovernanceApplicationAdapter<TObject>}
 */
 export function createApplicationAdapter(adapter) {
  if (!adapter || typeof adapter !== "object") {
    throw new Error("Adapter must be an object");
  }
  if (typeof adapter.applicationId !== "string" || !adapter.applicationId.trim()) {
    throw new Error("Adapter requires an applicationId");
  }
  if (typeof adapter.toTargets !== "function") {
    throw new Error("Adapter requires toTargets()");
  }
  if (typeof adapter.getPrimaryTargetKey !== "function") {
    throw new Error("Adapter requires getPrimaryTargetKey()");
  }
  return adapter;
 }
 /**
 * Evaluate every target an object maps to and compose one decision.
 *
 * Composition is the ladder maximum per dimension, so an object is governed by
 * the strictest verdict reaching it: denying a seller takes their listings down
 * even though each listing's own address is clean. Applications that want a
 * different rule can compose the per-target decisions themselves.
 *
 * @template TObject
 * @param {TObject} object
 * @param {GovernanceApplicationAdapter<TObject>} adapter
 * @param {(target: GovernanceTarget) => GovernanceDecision} evaluate
 * @returns {GovernanceDecision}
 */
 export function evaluateObject(object, adapter, evaluate) {
  const targets = adapter.toTargets(object).filter((target) => isValidTarget(target));
  if (targets.length === 0) {
    throw new Error(`Adapter produced no valid targets for ${adapter.applicationId}`);
  }
  const decisions = targets.map((target) => evaluate(target));
  const composed = composeDecisions(decisions);
  // The composed decision is reported against the object's own identity, not
  // against whichever contributing target happened to be most severe.
  composed.key = adapter.getPrimaryTargetKey(object);
  return composed;
 }
 /**
 * Evaluate many objects, returning decisions keyed by primary target.
 * @template TObject
 * @param {TObject[]} objects
 * @param {GovernanceApplicationAdapter<TObject>} adapter
 * @param {(target: GovernanceTarget) => GovernanceDecision} evaluate
 * @returns {Map<string, GovernanceDecision>}
 */
 export function evaluateObjects(objects, adapter, evaluate) {
  /** @type {Map<string, GovernanceDecision>} */
  const results = new Map();
  for (const object of objects ?? []) {
    results.set(adapter.getPrimaryTargetKey(object), evaluateObject(object, adapter, evaluate));
  }
  return results;
 }
 /**
 * Collect the deduplicated targets a batch of objects depends on.
 *
 * Used to tell the runtime which targets to keep evidence fresh for, without
 * subscribing once per object.
 *
 * @template TObject
 * @param {TObject[]} objects
 * @param {GovernanceApplicationAdapter<TObject>} adapter
 * @returns {GovernanceTarget[]}
 */
 export function collectTargets(objects, adapter) {
  /** @type {Map<string, GovernanceTarget>} */
  const targets = new Map();
  for (const object of objects ?? []) {
    for (const target of adapter.toTargets(object)) {
      if (isValidTarget(target)) {
        targets.set(getTargetKey(target), target);
      }
    }
  }
  return Array.from(targets.values());
 }
@@ -86,6 +86,67 @@ export function freezeEvidence(evidence) {
  };
 }
 /**
 * Merge evidence from several decisions about the same object.
 *
 * An object may answer to more than one target — a product to its seller, its
 * address, and its exact event — and the evidence that explains the composed
 * decision is the union of what each target carried. Counts are summed per
 * category and contributor lists are unioned, so a seller-level report and an
 * address-level report both show up in one explanation.
 *
 * @param {GovernanceEvidence[]} records
 * @returns {GovernanceEvidence}
 */
 export function mergeEvidence(records) {
  const merged = createEmptyEvidence();
  /** @type {Set<string>} */
  const reporters = new Set();
  /** @type {Set<string>} */
  const muters = new Set();
  for (const record of records ?? []) {
    if (!record) {
      continue;
    }
    for (const [category, count] of Object.entries(record.trustedReportsByCategory ?? {})) {
      merged.trustedReportsByCategory[category] =
        (merged.trustedReportsByCategory[category] ?? 0) + count;
    }
    for (const [category, count] of Object.entries(record.trustedMutesByCategory ?? {})) {
      merged.trustedMutesByCategory[category] =
        (merged.trustedMutesByCategory[category] ?? 0) + count;
    }
    merged.trustedReportTotal += record.trustedReportTotal ?? 0;
    merged.trustedMuteTotal += record.trustedMuteTotal ?? 0;
    for (const pubkey of record.trustedReporterPubkeys ?? []) {
      reporters.add(pubkey);
    }
    for (const pubkey of record.trustedMuterPubkeys ?? []) {
      muters.add(pubkey);
    }
    merged.personalBlock ||= record.personalBlock === true;
    merged.personalMute ||= record.personalMute === true;
    merged.userDenied ||= record.userDenied === true;
    merged.eventDenied ||= record.eventDenied === true;
    merged.addressDenied ||= record.addressDenied === true;
    merged.userAllowed ||= record.userAllowed === true;
    merged.protectedTarget ||= record.protectedTarget === true;
    merged.thresholds = { ...merged.thresholds, ...record.thresholds };
  }
  merged.trustedReporterPubkeys = Array.from(reporters);
  merged.trustedMuterPubkeys = Array.from(muters);
  return freezeEvidence(merged);
 }
 /**
 * Strip evidence down to counts, dropping the pubkey lists.
 *
@@ -53,6 +53,7 @@ export {
 export {
  createEmptyEvidence,
  freezeEvidence,
  mergeEvidence,
  redactEvidence,
 } from "./evidence.js";
@@ -77,6 +78,13 @@ export {
  composeDecisions,
 } from "./policy.js";
 export {
  createApplicationAdapter,
  evaluateObject,
  evaluateObjects,
  collectTargets,
 } from "./adapter.js";
 export {
  canonicalStringify,
  hashString,
@@ -115,4 +123,5 @@ export {
 * @typedef {import('./evaluator.js').ViewerState} ViewerState
 * @typedef {import('./evaluator.js').ReportRecord} ReportRecord
 * @typedef {import('./evaluator.js').MuteRecord} MuteRecord
 * @typedef {import('./adapter.js').GovernanceApplicationAdapter<any>} GovernanceApplicationAdapter
 */
@@ -9,6 +9,7 @@
 // collapsing those states into a single "hidden" boolean.
 import { createReason, dedupeReasons } from "./reasons.js";
 import { mergeEvidence } from "./evidence.js";
 /**
 * @typedef {import('./reasons.js').GovernanceReason} GovernanceReason
@@ -548,6 +549,15 @@ export function composeDecisions(decisions) {
  }
  composed.reasons = dedupeReasons(composed.reasons);
  // Evidence is unioned rather than taken from the first decision: an object
  // governed by several targets must explain itself with everything that
  // contributed, not just whichever target happened to be evaluated first.
  const evidence = decisions.map((decision) => decision.evidence).filter(Boolean);
  if (evidence.length) {
    composed.evidence = mergeEvidence(/** @type {any} */ (evidence));
  }
  return composed;
 }
@@ -0,0 +1,131 @@
 import { describe, expect, it } from "vitest";
 import {
  collectTargets,
  createApplicationAdapter,
  evaluateObject,
  evaluateObjects,
 } from "../src/adapter.js";
 import { createNeutralDecision } from "../src/policy.js";
 const SELLER = "d4".repeat(32);
 const EVENT_ID = "1b".repeat(32);
 /** @type {import('../src/adapter.js').GovernanceApplicationAdapter<any>} */
 const adapter = createApplicationAdapter({
  applicationId: "test-app",
  toTargets: (object) => [
    { type: "user", pubkey: object.author },
    { type: "event", id: object.id, author: object.author },
  ],
  getPrimaryTargetKey: (object) => `event:${object.id}`,
 });
 const object = { id: EVENT_ID, author: SELLER };
 /** Build an evaluator that returns a fixed visibility per target type. */
 const evaluatorFor = (byType) => (target) => {
  const decision = createNeutralDecision({ key: `${target.type}` });
  const effect = byType[target.type];
  if (effect) {
    decision.visibility.effect = effect;
  }
  return decision;
 };
 describe("createApplicationAdapter", () => {
  it("accepts a complete adapter", () => {
    expect(adapter.applicationId).toBe("test-app");
  });
  it("rejects a missing applicationId", () => {
    expect(() =>
      createApplicationAdapter(/** @type {any} */ ({ toTargets: () => [], getPrimaryTargetKey: () => "" })),
    ).toThrow(/applicationId/);
  });
  it("rejects a missing toTargets", () => {
    expect(() =>
      createApplicationAdapter(/** @type {any} */ ({ applicationId: "a", getPrimaryTargetKey: () => "" })),
    ).toThrow(/toTargets/);
  });
  it("rejects a missing getPrimaryTargetKey", () => {
    expect(() =>
      createApplicationAdapter(/** @type {any} */ ({ applicationId: "a", toTargets: () => [] })),
    ).toThrow(/getPrimaryTargetKey/);
  });
  it("rejects a non-object", () => {
    expect(() => createApplicationAdapter(/** @type {any} */ (null))).toThrow(/must be an object/);
  });
 });
 describe("evaluateObject", () => {
  it("keeps the strictest verdict reaching the object", () => {
    const decision = evaluateObject(object, adapter, evaluatorFor({ user: "hide" }));
    expect(decision.visibility.effect).toBe("hide");
  });
  it("is unaffected by which target was most severe when reporting identity", () => {
    const decision = evaluateObject(object, adapter, evaluatorFor({ user: "hide" }));
    expect(decision.key).toBe(`event:${EVENT_ID}`);
  });
  it("allows an object when no target objects", () => {
    expect(evaluateObject(object, adapter, evaluatorFor({})).visibility.effect).toBe("allow");
  });
  it("escalates from any contributing target", () => {
    expect(
      evaluateObject(object, adapter, evaluatorFor({ event: "deny" })).visibility.effect,
    ).toBe("deny");
  });
  it("filters out invalid targets the adapter emits", () => {
    const loose = createApplicationAdapter({
      applicationId: "a",
      toTargets: () => [
        /** @type {any} */ ({ type: "user", pubkey: "junk" }),
        { type: "user", pubkey: SELLER },
      ],
      getPrimaryTargetKey: () => "user:x",
    });
    expect(() => evaluateObject(object, loose, evaluatorFor({}))).not.toThrow();
  });
  it("throws when an adapter produces no usable targets", () => {
    const broken = createApplicationAdapter({
      applicationId: "broken",
      toTargets: () => [],
      getPrimaryTargetKey: () => "x",
    });
    expect(() => evaluateObject(object, broken, evaluatorFor({}))).toThrow(/no valid targets/);
  });
 });
 describe("evaluateObjects", () => {
  it("keys results by primary target", () => {
    const results = evaluateObjects([object], adapter, evaluatorFor({}));
    expect(results.has(`event:${EVENT_ID}`)).toBe(true);
  });
  it("handles an empty list", () => {
    expect(evaluateObjects([], adapter, evaluatorFor({})).size).toBe(0);
  });
 });
 describe("collectTargets", () => {
  it("deduplicates shared targets across objects", () => {
    const targets = collectTargets(
      [object, { id: "2c".repeat(32), author: SELLER }],
      adapter,
    );
    // Two events plus one shared author.
    expect(targets).toHaveLength(3);
  });
  it("returns nothing for an empty list", () => {
    expect(collectTargets([], adapter)).toEqual([]);
  });
 });
@@ -1,6 +1,11 @@
 import { describe, expect, it } from "vitest";
-import { createEmptyEvidence, freezeEvidence, redactEvidence } from "../src/evidence.js";
+import {
  createEmptyEvidence,
  freezeEvidence,
  mergeEvidence,
  redactEvidence,
 } from "../src/evidence.js";
 const populated = () => ({
  ...createEmptyEvidence(),
@@ -71,3 +76,34 @@ describe("redactEvidence", () => {
    expect(redacted.trustedReportsByCategory).toEqual({ nudity: 1, spam: 2 });
  });
 });
 describe("mergeEvidence", () => {
  it("sums counts across targets", () => {
    const merged = mergeEvidence([populated(), populated()]);
    expect(merged.trustedReportTotal).toBe(6);
    expect(merged.trustedReportsByCategory.spam).toBe(4);
  });
  it("unions contributor lists without duplicating", () => {
    const merged = mergeEvidence([populated(), populated()]);
    expect(merged.trustedReporterPubkeys).toEqual(["aa", "bb", "cc"]);
  });
  it("ors the boolean flags", () => {
    const denied = { ...createEmptyEvidence(), userDenied: true };
    const blocked = { ...createEmptyEvidence(), personalBlock: true };
    const merged = mergeEvidence([denied, blocked]);
    expect(merged.userDenied).toBe(true);
    expect(merged.personalBlock).toBe(true);
    expect(merged.eventDenied).toBe(false);
  });
  it("tolerates empty and malformed input", () => {
    expect(mergeEvidence([]).trustedReportTotal).toBe(0);
    expect(mergeEvidence(/** @type {any} */ ([null])).trustedReportTotal).toBe(0);
  });
  it("returns sorted, stable output", () => {
    expect(mergeEvidence([populated()])).toEqual(mergeEvidence([populated()]));
  });
 });
@@ -4,6 +4,7 @@ export default defineConfig({
  test: {
    include: [
      "packages/**/test/**/*.test.js",
      "examples/**/test/**/*.test.js",
      "tests/**/*.test.js",
    ],
    environment: "node",