feat(api-contract): identical projection and report read routes in all five ports

CHANGELOG.md

@@ -107,8 +107,9 @@ it until 1.1 ships._
   with a derived field over a `field.object`. In C# a report's enum dimension is sortable (an
   entity's enum field still is not). A decimal column (`avg`, a ratio, a `sum` of a decimal)
   has no cross-port JSON spelling: each port sends its own, and TypeScript sends a string.
-  Gated by a new api-contract sub-corpus, `fixtures/api-contract-conformance/report/` (12
-  scenarios, generated lane, all five ports; the corpus goes from 61 scenarios to 73), which
+  Gated by a new api-contract sub-corpus, `fixtures/api-contract-conformance/report/` (13
+  scenarios, generated lane, all five ports; the corpus goes from 61 scenarios to 78, the
+  `projection/` sub-corpus gaining four), which
   is also the first to assert a `field.date` literally. Anyone who declared a view-sourced
   report under the unreleased 1.1 vocabulary will see these files on the next `gen`. See
   [docs/features/reporting.md](docs/features/reporting.md#how-a-report-is-served).
@@ -144,28 +145,32 @@ it until 1.1 ships._
 
 ### Changed
 
-Seven corrections that shipped with report serving and reach models that declare no report.
+Eight corrections that shipped with report serving and reach models that declare no report.
 Each one changes generated code on the next `gen`, or generated docs on the next `meta docs`
 or Python api-docs build, as its entry says. A drift gate that covers that output reports it
 until you regenerate.
 
-- **TypeScript and Python: a read-only projection with no declared identity and no field named
-  `id` loses its item surface.** It no longer gets `GET /{id}` or the three item-verb refusals,
-  its by-id query (`find<Name>ById` in TypeScript, `find_by_id` on the Python repository
-  Protocol) or, in TypeScript, its detail hook and `detail` query keys. That surface could not
-  address a row: TypeScript built the query with no `WHERE` and answered the view's first row,
-  and Python bound an `id: int` to nothing. **Unchanged by this entry:** a projection with a
-  declared identity (a composite one still binds its first field; the next entry covers one
-  keyed on a field not named `id`), and a projection with an `id` field and no declared
-  identity. C#, Java and Kotlin are unchanged and remain stricter: they mount
-  `/{id}` only for a declared single-column identity, so a projection with an `id` field and no
-  declared identity has item routes in TypeScript and Python and none in the other three. The
-  TypeScript mounts (`mountReadOnlyCrudRoutes`, Fastify and Hono) take a new `itemRoutes: false`
-  option for this; it defaults to mounting them. **Upgrading:** an owned `routes` or
-  `routes-hono` generator ejected before this release keeps mounting the item routes for this
-  shape until you re-eject it or add `itemRoutes: false` to its read-only mount options, and
-  an owned `mount-read-only.ts` needs the re-sync described under the served-report entry
-  above.
+- **TypeScript and Python: a read-only projection with no declared identity loses its item
+  surface, even when it has a field named `id`.** It no longer gets `GET /{id}` or the three
+  item-verb refusals, its by-id query (`find<Name>ById` in TypeScript, `find_by_id` on the Python
+  repository Protocol) or, in TypeScript, its detail hook and `detail` query keys. This is a
+  **named behaviour change for an adopter whose view-only projection has an `id` field and no
+  `identity.primary`**: that shape kept working in these two ports (TypeScript answered the row
+  whose `id` matched), and now answers the framework's `404` for `/{id}`. To keep the item
+  route, declare the identity: `identity.primary` extending the base entity's, with a
+  pass-through field for its key. A field named `id` is a convention, not a key, and C#, Java
+  and Kotlin never mounted item routes for it, so all five ports now mount `/{id}` for exactly
+  the projections that declare an identity. Without any `id` field the same surface was already
+  unaddressable: TypeScript built the by-id query with no `WHERE` and answered the view's first
+  row, and Python bound an `id: int` to nothing. **Unchanged by this entry:** a projection with
+  a declared identity (a composite one still binds its first field in these two ports; the next
+  entry covers one keyed on a field not named `id`). The TypeScript mounts
+  (`mountReadOnlyCrudRoutes`, Fastify and Hono) take a new `itemRoutes: false` option for this;
+  it defaults to mounting them. **Upgrading:** an owned `routes` or `routes-hono` generator
+  ejected before this release keeps mounting the item routes for this shape until you re-eject
+  it or add `itemRoutes: false` to its read-only mount options, and an owned
+  `mount-read-only.ts` needs the re-sync described under the served-report entry above. Gated
+  in all five ports by `projection/keyless-no-item-route.yaml`.
 - **TypeScript: a read-only projection whose identity is on a field not named `id` now
   addresses that field.** The shape: a view-only `object.projection` whose
   `identity.primary` names a single field such as `code`, or a composite identity whose first
@@ -197,6 +202,13 @@ until you regenerate.
   `GET <path>/{id}` only when the projection has an item route (the rule above), and the
   filter allowlist. No write verb is listed, since the router answers those with `405`.
   Entities and write-through objects are unchanged. Regenerate the docs to pick the pages up.
+- **Java and Kotlin API docs: a read-only projection's page lists the reads only.** The
+  api-docs builders listed `POST`, `PATCH`, `PUT` and `DELETE` on a read-only projection, each
+  described as a `405` refusal, beside `GET`. The other three ports never documented a write
+  verb on one, and a refusal is not an operation a caller can use, so the page now lists `GET
+  <path>` and, when the projection declares an identity, `GET <path>/{id}`. The generated
+  controllers are unchanged. Regenerate the docs to pick it up. Gated in all five ports by
+  `projection/docs-routes.json`.
 - **Java: a filter allowlist with more than ten filterable fields now compiles.**
   `SpringFilterAllowlistGenerator` spelled `OPS_BY_FIELD` with `Map.of`, which has no overload
   past ten pairs, so an entity or projection with eleven or more `@filterable` fields generated

agent-context/skills/metaobjects-codegen/references/python.md

@@ -118,10 +118,9 @@ Its REST surface is generated and READ-ONLY (F22): GET list + GET by id, the sam
 projection's OWN declared field set, and `POST` / `PATCH` / `PUT` / `DELETE` each
 answering `405 {"error": "method_not_allowed"}` — 405 and not 404 because the same
 path answers GET. A KEYLESS projection mounts no `/{id}` route at all, so it refuses only
-the collection verb, and its repository Protocol has no `find_by_id`. In Python keyless
-means no `identity.primary` AND no field named `id`: a projection with an `id` field and
-no declared identity keeps its item routes (C#, Java and Kotlin are stricter and need a
-declared single-column identity).
+the collection verb, and its repository Protocol has no `find_by_id`. Keyless means no
+declared `identity.primary`: a field that is merely named `id` is a convention, not a key, so
+a projection with an `id` field and no declared identity is keyless too (in every port).
 The read-only router is a separate assembly from the writable one, sharing only the
 emitters they genuinely have in common; `router_generator` and
 `filter_allowlist_generator` ask one shared `emits_router()` predicate.

agent-context/skills/metaobjects-codegen/references/typescript.md

@@ -154,10 +154,9 @@ Its REST surface is generated and READ-ONLY (F22): GET list + GET by id, the sam
 projection's OWN declared field set, and `POST` / `PATCH` / `PUT` / `DELETE` each
 answering `405 {"error": "method_not_allowed"}` — 405 and not 404 because the same
 path answers GET. A KEYLESS projection mounts no `/:id` route at all, so it refuses only
-the collection verb, and it gets no `find…ById` query and no detail hook. In TypeScript
-keyless means no `identity.primary` AND no field named `id`: a projection with an `id`
-field and no declared identity keeps its item routes (C#, Java and Kotlin are stricter and
-need a declared single-column identity).
+the collection verb, and it gets no `find…ById` query and no detail hook. Keyless means no
+declared `identity.primary`: a field that is merely named `id` is a convention, not a key, so
+a projection with an `id` field and no declared identity is keyless too (in every port).
 `routesFile()` mounts it through `mountReadOnlyCrudRoutes` from the drizzle-fastify
 adapter (your `codegen/runtime/` copy once ejected), which is where the refusals live.
 A `field.decimal` in a view's read schema is `z.string()`: the driver reads `numeric` as

docs/CONFORMANCE.md

@@ -34,7 +34,7 @@ regenerate with `ls -d fixtures/<corpus>/*/ | wc -l` for directory-shaped corpor
 | [`fixtures/extract-conformance/`](../fixtures/extract-conformance/) | 48 | ✓ | ✓ | inherits the shared JVM engine | ✓ | ✓ |
 | [`fixtures/output-prompt-conformance/`](../fixtures/output-prompt-conformance/) | 17 | ✓ | ✓ | ✓ | ✓ | ✓ |
 | [`fixtures/persistence-conformance/`](../fixtures/persistence-conformance/) | 39 (33 query + 6 migration) | all 39 | 33 query (migrations TS-only, ADR-0015) | 33 query (via Exposed) | 33 query | 33 query |
-| [`fixtures/api-contract-conformance/`](../fixtures/api-contract-conformance/) | 73 (31 core + 10 tph + 9 m2m + 2 jsonb + 2 write-through + 7 projection + 12 report) | ✓ (Fastify reference + generated lane) | ✓ (embedded HTTP + JDBC) | ✓ (embedded HTTP + Exposed) | ✓ (HttpListener + Npgsql) | ✓ (FastAPI + pg8000) |
+| [`fixtures/api-contract-conformance/`](../fixtures/api-contract-conformance/) | 78 (31 core + 10 tph + 9 m2m + 2 jsonb + 2 write-through + 11 projection + 13 report) | ✓ (Fastify reference + generated lane) | ✓ (embedded HTTP + JDBC) | ✓ (embedded HTTP + Exposed) | ✓ (HttpListener + Npgsql) | ✓ (FastAPI + pg8000) |
 | [`fixtures/validation-conformance/`](../fixtures/validation-conformance/) | 42 cases | ✓ (generated Zod + run-time `runValidators`) | ✓ | ✓ | ✓ | ✓ (generated Pydantic + run-time `run_validators`) |
 | [`fixtures/registry-conformance/`](../fixtures/registry-conformance/) | 1 canonical manifest | ✓ (reference emitter) | ✓ | ✓ | ✓ | ✓ |
 | [`fixtures/object-model-conformance/`](../fixtures/object-model-conformance/) | 1 shared metadata fixture (per-port scenarios) | ✓ | ✓ | ✓ | ✓ | ✓ |
@@ -257,9 +257,9 @@ All 31 fixtures → [features/migrations-and-drift.md](features/migrations-and-d
 - `migrations/*` (6) → [features/migrations-and-drift.md](features/migrations-and-drift.md) (schema migration section)
 - `queries/*` (33) → [features/source-kinds.md](features/source-kinds.md) (query semantics against `source.rdb`)
 
-### `fixtures/api-contract-conformance/` (73)
+### `fixtures/api-contract-conformance/` (78)
 
-All 73 scenarios → [features/api-contract.md](features/api-contract.md) (cross-port
+All 78 scenarios → [features/api-contract.md](features/api-contract.md) (cross-port
 REST API URL grammar + JSON wire format). Verifies every backend's emitted CRUD
 routes answer identically over HTTP — list / get / create / patch+put / delete,
 plus pagination (`limit`/`offset`), sort (`sort=field:dir`), the `withCount=1`
@@ -274,8 +274,10 @@ scenarios the corpus carries six sub-corpora — `tph/` (10, single-table
 inheritance), `m2m/` (9 — 3 plain, 5 gating TPH x M:N together, the combination
 each corpus alone could not reach, and 1 pinning the collection-URL spelling),
 `jsonb/` (2, typed value-object columns),
-`write-through/` (2, table-write + view-read entities), `projection/` (7, a
-read-only view answers reads and refuses writes with 405) and `report/` (12,
+`write-through/` (2, table-write + view-read entities), `projection/` (11, a
+read-only view answers reads and refuses writes with 405; a projection with no declared
+identity has no item route; a projection keyed on a field not named `id` is addressed by
+it; decimal and float fields filter) and `report/` (13,
 FR-044: a view-backed `object.report` is listed, filtered, sorted and paged on
 its derived fields, answers `POST` with 405 and mounts no `/{id}`). All 5 ports — TS, Java,
 Kotlin, C#, Python — run it in BOTH lanes: a hand-rolled reference server and
@@ -405,7 +407,7 @@ own those two functions), and
 ## Orphaned fixtures (tested but not yet documented)
 
 The fixtures in the nine corpora mapped above (metamodel 364 + yaml 16 + verify 31
-+ render 15 + persistence 39 + api-contract 73 + source-resolution 25 + scope 10 +
++ render 15 + persistence 39 + api-contract 78 + source-resolution 25 + scope 10 +
 dependency 23) each map to a feature doc. None are orphaned today. The remaining
 corpora in the totals table gate tooling contracts (registry manifests, provider
 composition, agent context, docs emit) rather than user-facing metamodel behaviour,

docs/features/api-contract.md

@@ -425,21 +425,23 @@ The surface:
   on the collection, `PATCH` / `PUT` / `DELETE` on the item. 405 rather than 404
   because the resource plainly exists: the same path answers `GET`. `message` is free
   prose and is not part of the contract.
-- A **keyless** projection mounts no `/{id}` route at all, so it refuses only the
-  collection verb — refusing an item verb would advertise an address the port never
-  serves. What counts as keyless differs by port, and the corpus does not gate it:
-
-  | Port | Item routes are mounted when |
-  |---|---|
-  | C#, Java, Kotlin | the projection declares or inherits a **single-column** `identity.primary` |
-  | TypeScript, Python | it declares or inherits an `identity.primary` (a composite one binds its first field), **or** it declares none and has a field named `id` |
-
-  So a projection with an `id` field and no declared identity has item routes in
-  TypeScript and Python and none in the other three. Until FR-044, TypeScript and Python
-  mounted the item routes for **every** read-only projection, including one with no
-  identity and no `id` field, where they could not address a row (TypeScript answered the
-  view's first row). That one shape lost its `/{id}` routes, its by-id query and, in
-  TypeScript, its detail hook; every other projection is unchanged.
+- A **keyless** projection, one that declares and inherits no `identity.primary`, mounts no
+  `/{id}` route of any verb in any port, so it refuses only the collection verb —
+  refusing an item verb would advertise an address the port never serves. A field that
+  happens to be named `id` is a convention, not a key: a projection with an `id` field and
+  no declared identity is keyless. `GET /<plural>/1` on one answers the framework's own
+  `404`, never a row. A projection with a declared identity addresses a row by the field
+  that identity names, which need not be called `id` and which the view's column must
+  match: `GET /<plural>/{key}` answers that row, or the `404 {"error": "not_found"}`
+  envelope. One difference remains, and the corpus does not gate it: C#, Java and Kotlin
+  mount item routes only for a **single-column** identity, while TypeScript and Python
+  bind a composite one to its first field.
+- Filters apply to a projection's `field.decimal` and `field.float` fields as they do to
+  an entity's. A decimal's wire spelling is port-specific and is not asserted.
+- **The api docs list the same routes.** A projection's api page documents `GET <path>`,
+  and `GET <path>/{id}` only when the item route exists. The `405` refusals are not
+  operations a caller can use, so no write verb is documented. Pinned in every port by
+  `projection/docs-routes.json`.
 
 Every port mounts those refusals **explicitly**. Left to the framework, ASP.NET and
 Spring each answer an unmatched method on a matched path with an empty-bodied 405 and
@@ -472,7 +474,7 @@ entity's. No request parameter picks dimensions, measures or a grain. No port ge
 client hook, grid or form for a report yet.
 
 Gated by [`fixtures/api-contract-conformance/report/`](../../fixtures/api-contract-conformance/report/)
-(12 scenarios), **generated lane only, on all five ports**, for the reason `projection/`
+(13 scenarios), **generated lane only, on all five ports**, for the reason `projection/`
 gives. The columns, their types and the per-port generated files are in
 [reporting.md](reporting.md#how-a-report-is-served).