feat!(examples): each example does what its transport is for

[btravers]

Per discussion: no start-core-only examples, and each worker example should teach its transport's real strength.

Structure

• Removed examples/order-worker — the in-memory queue example existed to demonstrate the bare kernel; that job is done better by the adapter-backed examples.
• Renamedorder-amqp → order-amqp-worker and order-temporal → order-temporal-worker.

order-amqp-worker: event broadcast, via a transactional outbox

• OrderRepository.save (order-infrastructure) writes the order row and its outbox row in one $tryTransaction — the write and the fact of the write commit or roll back together (spec: a rolled-back duplicate leaves no event behind).
• An outbox relay layered onto start-amqp's runtime sweeps pending rows in commit order onto the orders exchange, marks what the broker confirmed, and is deliberately at-least-once. It starts after the consumer and stops before it; drain stays the consumer's.
• The contract is now a broadcast: order.placed (a fact, past tense), one subscriber queue (order-notifications) with the DLX/retry story intact.
• Proven end to end against a real RabbitMQ: place → outbox → relay → exchange → consumer, commit order preserved, outbox drained — including delivery to a foreign queue the contract never declared, which is the broadcast claim itself.

order-temporal-worker: orchestration, as a fulfillment saga

• fulfillOrder orchestrates place → reserveStock → arrangeShipping and compensates in reverse (releaseStock, then cancelPlacement) when a later step answers a permanent no.
• Triage rule: declared errors compensate and surface typed at the client; Temporal's machinery failures propagate uncompensated (un-deciding unknown state is a second bug). Compensation activities declare no errors — cancelPlacement absorbs OrderNotFound so a re-run answers the same.
• Stubs (FulfillmentModule) always say yes; the specs swap in refusing providers and verify both compensation paths against the real database — after a refusal, the placement is gone.
• One subtlety documented in the README: AsyncResults are eager, so saga steps must be built inside the previous step's flatMap or the sequence runs as a race.

Foundation

New Outbox/StockService/ShippingService ports in order-application, OutOfStock/ShippingUnavailable in order-domain, outbox table + transactional save + remove in order-infrastructure.

Verification

turbo run build typecheck test green across all workspaces (the one failure on my machine is start-core's pre-existing binds 9000 test, blocked locally by ZscalerTunnel squatting on 127.0.0.1:9000 — identical on untouched main). Lint, format, knip clean. Example spec count: 79 (docs updated from 93). Docs swept: examples/README (three-deployment framing), both worker READMEs rewritten around their patterns, contract READMEs, CLAUDE.md counts, knip entry.

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Refactors the examples/ teaching surface to remove the start-core-only worker example and reframe the remaining example deployments around what each transport is best at (HTTP answering, Temporal orchestration, AMQP broadcast), adding the necessary domain/application/infrastructure support (fulfillment saga + transactional outbox).

Changes:

• Removes examples/order-worker and renames/restructures the Temporal and AMQP examples into order-temporal-worker (fulfillment saga) and order-amqp-worker (transactional outbox broadcast).
• Adds fulfillment ports/errors and a compensation-capable Temporal workflow + activities, with updated Temporal contract.
• Implements a transactional outbox in the Prisma repository plus an outbox relay layered onto the AMQP runtime/contract.

Reviewed changes

Copilot reviewed 77 out of 92 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
README.md	Updates repo-level docs to describe 10 examples and 3 transport-focused runtimes.
pnpm-workspace.yaml	Adds @amqp-contract/client to the catalog.
pnpm-lock.yaml	Locks the new @amqp-contract/client dependency and workspace renames.
knip.json	Removes deleted example entries and updates Temporal worker entry.
examples/order-worker/vitest.config.ts	Removed (order-worker example deleted).
examples/order-worker/tsconfig.test-d.json	Removed (order-worker example deleted).
examples/order-worker/tsconfig.json	Removed (order-worker example deleted).
examples/order-worker/src/vitest.d.ts	Removed (order-worker example deleted).
examples/order-worker/src/test-fixtures.ts	Removed (order-worker example deleted).
examples/order-worker/src/queue.ts	Removed (order-worker example deleted).
examples/order-worker/src/queue-runtime.ts	Removed (order-worker example deleted).
examples/order-worker/src/queue-runtime.spec.ts	Removed (order-worker example deleted).
examples/order-worker/src/needs-gate.test-d.ts	Removed (order-worker example deleted).
examples/order-worker/src/module.ts	Removed (order-worker example deleted).
examples/order-worker/src/main.ts	Removed (order-worker example deleted).
examples/order-worker/src/index.ts	Removed (order-worker example deleted).
examples/order-worker/src/env.ts	Removed (order-worker example deleted).
examples/order-worker/src/env.spec.ts	Removed (order-worker example deleted).
examples/order-worker/README.md	Removed (order-worker example deleted).
examples/order-worker/package.json	Removed (order-worker example deleted).
examples/order-temporal/src/workflows.ts	Removed (renamed/replaced by order-temporal-worker).
examples/order-temporal/src/temporal-runtime.spec.ts	Removed (renamed/replaced by order-temporal-worker).
examples/order-temporal/src/module.ts	Removed (renamed/replaced by order-temporal-worker).
examples/order-temporal/README.md	Removed (renamed/replaced by order-temporal-worker).
examples/order-temporal-worker/vitest.config.ts	Added Temporal worker vitest config with cold-cache timeouts.
examples/order-temporal-worker/tsconfig.test-d.json	Added Temporal worker type-test tsconfig.
examples/order-temporal-worker/tsconfig.json	Added Temporal worker tsconfig.
examples/order-temporal-worker/src/workflows.ts	Adds fulfillOrder saga orchestration workflow.
examples/order-temporal-worker/src/vitest.d.ts	Adds unthrown vitest matcher types.
examples/order-temporal-worker/src/test-fixtures.ts	Reworks fixtures for saga services + DB assertions.
examples/order-temporal-worker/src/temporal-runtime.ts	Expands runtime activities to support saga + compensations.
examples/order-temporal-worker/src/temporal-runtime.spec.ts	Adds saga e2e specs (fulfill + compensation paths).
examples/order-temporal-worker/src/needs-gate.test-d.ts	Updates runtime needs-gate description/references.
examples/order-temporal-worker/src/module.ts	Adds new composition root exporting saga-needed ports.
examples/order-temporal-worker/src/main.ts	Updates runtime description wording after rename.
examples/order-temporal-worker/src/index.ts	Adds new public entry exports for the example workspace.
examples/order-temporal-worker/src/fulfillment.ts	Adds stand-in fulfillment services module for the saga.
examples/order-temporal-worker/src/env.ts	Adds Temporal worker env schema (address/namespace + probes).
examples/order-temporal-worker/src/env.spec.ts	Adds Temporal worker env specs.
examples/order-temporal-worker/README.md	New README explaining the saga and its contract/error model.
examples/order-temporal-worker/package.json	Renames package to ...-order-temporal-worker.
examples/order-temporal-contract/src/test-fixtures.ts	Updates fixtures to validate fulfillOrder input schema.
examples/order-temporal-contract/src/layering.test-d.ts	Updates layering guard to renamed worker package.
examples/order-temporal-contract/src/contract.ts	Replaces single-workflow contract with saga workflow + 5 activities.
examples/order-temporal-contract/README.md	Updates contract README for saga + compensation semantics.
examples/order-infrastructure/src/test-fixtures.ts	Adds Outbox fixture alongside repository fixture.
examples/order-infrastructure/src/prisma-outbox.ts	Adds Prisma adapter implementing the outbox read/mark port.
examples/order-infrastructure/src/prisma-outbox.spec.ts	Adds specs for transactional outbox behavior.
examples/order-infrastructure/src/prisma-order-repository.ts	Writes outbox row in the same transaction as order save; adds remove.
examples/order-infrastructure/src/module.ts	Exports Outbox from PersistenceModule and provides outbox adapter.
examples/order-infrastructure/src/index.ts	Re-exports prismaOutbox.
examples/order-infrastructure/src/database.ts	Adds outbox table DDL for in-memory SQLite test DB.
examples/order-infrastructure/prisma/schema.prisma	Adds OutboxMessage model.
examples/order-domain/src/index.ts	Exports new fulfillment domain errors.
examples/order-domain/src/fulfillment.ts	Adds OutOfStock and ShippingUnavailable tagged domain errors.
examples/order-config/README.md	Updates config package docs for renamed example workspaces.
examples/order-application/src/test-fixtures.ts	Updates stub repository to include remove.
examples/order-application/src/ports.ts	Adds Outbox/StockService/ShippingService ports + repository remove.
examples/order-application/src/needs-gate.test-d.ts	Updates wiring type-test to include repository remove.
examples/order-application/src/index.ts	Re-exports new ports and event type.
examples/order-api/README.md	Updates cross-links from removed order-worker to Temporal/AMQP examples.
examples/order-amqp/src/test-fixtures.ts	Removed (renamed/replaced by order-amqp-worker).
examples/order-amqp/src/needs-gate.test-d.ts	Removed (renamed/replaced by order-amqp-worker).
examples/order-amqp/src/module.ts	Removed (renamed/replaced by order-amqp-worker).
examples/order-amqp/src/amqp-runtime.ts	Removed (renamed/replaced by order-amqp-worker).
examples/order-amqp/src/amqp-runtime.spec.ts	Removed (renamed/replaced by order-amqp-worker).
examples/order-amqp/README.md	Removed (renamed/replaced by order-amqp-worker).
examples/order-amqp-worker/vitest.config.ts	Adds AMQP worker vitest config with RabbitMQ global setup.
examples/order-amqp-worker/tsconfig.test-d.json	Adds AMQP worker type-test tsconfig.
examples/order-amqp-worker/tsconfig.json	Adds AMQP worker tsconfig.
examples/order-amqp-worker/src/vitest.d.ts	Adds unthrown vitest matcher types.
examples/order-amqp-worker/src/test-fixtures.ts	Adds fixtures for running the broadcast runtime and tapping services.
examples/order-amqp-worker/src/outbox-relay.ts	Adds outbox relay loop using TypedAmqpClient.
examples/order-amqp-worker/src/needs-gate.test-d.ts	Adds runtime needs-gate type test for relay + logger needs.
examples/order-amqp-worker/src/module.ts	Adds broadcast deployment composition root exporting Outbox/Logger (+ writer port).
examples/order-amqp-worker/src/main.ts	Updates main to include relay poll interval from env.
examples/order-amqp-worker/src/index.ts	Adds entry exports for the renamed AMQP worker example.
examples/order-amqp-worker/src/env.ts	Adds OUTBOX_POLL_MS validation alongside broker/probes env.
examples/order-amqp-worker/src/env.spec.ts	Adds env tests including rejecting OUTBOX_POLL_MS=0.
examples/order-amqp-worker/src/amqp-runtime.ts	Replaces command-consumer with broadcast consumer + relay layering.
examples/order-amqp-worker/src/amqp-runtime.spec.ts	Adds end-to-end broadcast/outbox/commit-order tests.
examples/order-amqp-worker/README.md	New README focused on transactional outbox broadcast.
examples/order-amqp-worker/package.json	Renames package and adds @amqp-contract/client dep.
examples/order-amqp-contract/src/test-fixtures.ts	Updates schema validator fixture to the broadcast payload.
examples/order-amqp-contract/src/layering.test-d.ts	Updates layering guard to renamed worker package.
examples/order-amqp-contract/src/contract.ts	Replaces command message with order.placed broadcast event + subscriber queue.
examples/order-amqp-contract/src/contract.spec.ts	Updates contract assertions for broadcast queue and routing key.
examples/order-amqp-contract/README.md	Updates README to reflect broadcast event contract.
CLAUDE.md	Updates authoritative spec references to example count/names (still has stale order-worker mentions).
.gitignore	Updates Temporal cache comment link to new worker path.

Files not reviewed (1)

• pnpm-lock.yaml: Generated file

Suppressed comments (1)

CLAUDE.md:64

• This paragraph still uses examples/order-worker as one of the three “one runtime per process” demonstrations and describes a dead-letter outcome that no longer exists now that the in-memory queue example was removed. The referenced example list and the outcome comparison should be updated to match the current three examples (API, AMQP broadcast, Temporal orchestration).

 `examples/order-api`, `examples/order-worker` and `examples/order-temporal-worker`
make this testable rather than asserted: the same `ApplicationModule` +
`PersistenceModule` composition under three runtimes, with the same
`DuplicateOrder` arriving as a typed `CONFLICT` on the first, a dead-letter
on the second and a `nonRetryable` typed contract error on the third — and

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