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openspec/archive/2026-04-24-enterprise-events-schema/tasks.md

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+# Tasks: enterprise-events-schema
+
+- **Change ID**: enterprise-events-schema
+- **Package**: `@suaveplan/events-schema`
+- **Date**: 2026-04-24
+
+## Prerequisites (must be published to Verdaccio first)
+
+- [x] `@suaveplan/events`
+- [x] `@suaveplan/schema-registry`
+- [x] `@suaveplan/error`
+- [x] `@suaveplan/types`
+
+## Tasks
+
+### 1. Scaffold package
+
+- [x] Create `universal/events/events-schema/` directory tree per file layout in `proposal.md`
+- [x] Write `package.json` (name `@suaveplan/events-schema`, version `0.1.0`, `sideEffects: false`, correct workspace deps and catalog externals)
+- [x] Write `tsconfig.json` extending `@suaveplan/typescript-config/library.json`
+- [x] Write `vitest.config.ts` using `createTestConfig()` from `@suaveplan/testing/config`
+
+### 2. Error codes (`src/error-codes.ts`)
+
+- [x] Define `EventsSchemaErrorCode` union type
+- [x] Call `defineCodes` to register all `EVENTS_SCHEMA.*` codes
+- [x] Export `registerEventsSchemaErrorCodes()` and `EventsSchemaError`
+
+### 3. Types (`src/types/common.ts`)
+
+- [x] Define and export `EventSchemasOptions`, `EventSchemasHandle`, `ValidationMode`, `RejectionHandler`, `ValidationRejection`, `ValidationError`, `SchemaValidationStats`, `SchemaRegistrationOptions`
+- [x] Write `common.md`
+
+### 4. Sensitive field redaction (`src/validation/redaction/`)
+
+- [x] Implement redaction logic: scan `ZodError` issues for paths, mask `.received` values when field schema carries `.meta({ sensitive: true })`
+- [x] Write `.md`, `.test.ts`, `index.ts`
+
+### 5. Validator (`src/validation/validator/`)
+
+- [x] Implement validation logic for `strict`, `warn`, and `sample` modes
+- [x] Inject `rng` for sample-rate decisions
+- [x] Apply redaction before constructing `ValidationError` entries
+- [x] Write `.md`, `.types.ts`, `.test.ts`, `index.ts`
+
+### 6. Schema registration helper (`src/schema/register-event-schema/`)
+
+- [x] Implement `registerEventSchema(registry, eventName, schema, options?)` that calls `registry.checkCompatibility` before registering
+- [x] Throw `EventsSchemaError("EVENTS_SCHEMA_COMPATIBILITY_BREAK")` on incompatible change
+- [x] Write `.md`, `.test.ts`, `index.ts`
+
+### 7. Core `attachEventSchemas` (`src/core/attach-event-schemas/`)
+
+- [x] Implement `attachEventSchemas(bus, options?)` via `@suaveplan/events` interceptor API only
+- [x] Validate payload against registered schema on each dispatch using configured `mode`
+- [x] Accumulate `SchemaValidationStats`
+- [x] Emit OTel counters and histogram per `proposal.md` §4
+- [x] Return `EventSchemasHandle` with `detach()`, `registerSchema()`, `stats()`
+- [x] Write `.md`, `.types.ts`, `.test.ts`, `index.ts`
+
+### 8. Tests
+
+- [x] Unit tests co-located (100% coverage target)
+- [x] `tests/integration.test.ts` — attach to real EventBus, register schema, dispatch valid and invalid payloads, assert rejection counts and mode behaviour
+- [x] `tests/property.test.ts` — fast-check properties per `proposal.md` §5
+
+### 9. Docs
+
+- [x] Every `.ts` implementation file has a sibling `.md`
+- [x] Root `README.md`
+
+### 10. Pre-publish gate
+
+- [x] `bunx turbo lint typecheck test --filter=@suaveplan/events-schema` green
+- [x] `bunx turbo test:coverage --filter=@suaveplan/events-schema` ≥ 100% on touched modules
+
+### 11. Publish
+
+- [x] `bun scripts/publish.ts --package @suaveplan/events-schema`
+
+### 12. Archive
+
+- [x] Fold spec delta into `openspec/specs/events/spec.md`
+- [x] `mv openspec/changes/enterprise-events-schema openspec/archive/2026-04-24-enterprise-events-schema`