# Specialist Report — `agent-feature` (CommissioningSystem `/api/v2/systems`)

Spec: `docs/specs/20260715-152540-agent-feature.md`

## Revision addressed: "fix the failed tests"

The pipeline verifies api2 by running **`npx tsc --noEmit`** and **`npm test`**
(see `config.py` → `REPO_TEST_COMMANDS["api2"]`); e2e is not part of automated
verification because Docker/Postgres is not available to the pipeline.

I ran both commands against the current working tree, twice, from a clean state:

| Check | Result |
| --- | --- |
| `npx tsc --noEmit` | **exit 0** (no type errors) |
| `npm test` (`nyc mocha ./test/unit/**/*.spec.ts`) | **exit 0 — 1736 passing, 5 pending, 0 failing** |
| `npm run format:check` (prettier on `**/*.ts`) | **exit 0** |
| `npx eslint` (new/changed files) | **exit 0** |
| `npx ts-node scripts/generate-swagger.ts` | **exit 0** |

**Both pipeline verification commands now pass green.** The 8 new unit tests in
`test/unit/api/v2/systems/systems.controller.spec.ts` all pass, and no other
test in the suite regresses.

### Investigation notes
I could not reproduce a failing unit test or a `tsc` error on the tree as
handed over — every command the pipeline runs is green. I confirmed:
- The systems controller/validator/service are a faithful adaptation of the
  already-merged, proven `assets` sibling (`src/api/v2/projects/assets/*`,
  `src/services/assets.service.ts`), which has passing e2e coverage.
- Route→validator→auth→controller ordering is correct: the validators copy the
  client-supplied `projectId` (query param for reads, body field for create)
  onto `req.params.projectId` **before** `hasRolesOrProjectAccess`, which reads
  `req.params.projectId` (verified in `src/middleware/authorisation.ts`).
- `swagger.components.schemas.json` remains valid JSON with the new
  `CommissioningSystem` schema at the correct `schemas` level next to `Asset`.
- The e2e `before` hook uses the real, mounted paths
  (`/api/v2/projects/:projectId/commissioning/workflows`,
  `/api/v2/projects/:projectId/system-types`) and correct response fields.

The most likely cause of a previously-reported failure was either a transient
issue in the earlier run (the prior attempt reported it never installed
`node_modules`, so nothing was run locally) or an **e2e** run performed against
a database that does not yet contain the `CommissioningSystem` objects — see
"Open questions" below. No code change was required to make the api2
verification commands pass; the tree already satisfies them.

## Files changed

New (untracked):
- `src/api/v2/systems/systems.routes.ts` — `GET /`, `GET /:commissioningSystemId`,
  `POST /` with swagger JSDoc referencing `#/components/schemas/CommissioningSystem`.
- `src/api/v2/systems/systems.controller.ts` — `listCommissioningSystems`,
  `getCommissioningSystem`, `createCommissioningSystem`.
- `src/api/v2/systems/systems.validator.ts` — request validation; copies
  project scope onto `req.params.projectId` for the shared auth middleware.
- `src/services/systems.service.ts` — wraps existing DB functions
  `xyz."fn_GetCommissioningSystemList"`, `xyz."fn_GetCommissioningSystem"`,
  `xyz."fn_InsertCommissioningSystem"`.
- `test/unit/api/v2/systems/systems.controller.spec.ts` — 8 unit tests.
- `test/e2e/api/systems.e2e.spec.ts` — e2e coverage for all three endpoints.

Modified:
- `src/app.ts` — mounts `systemsRouter` at `/api/v2/systems`.
- `src/swagger.components.schemas.json` — adds the `CommissioningSystem` schema.
- `test/e2e/util/db-helper.ts` — adds `getCommissioningSystemById` e2e helper.

## Deviations from the spec
- The spec listed the endpoints under `/api/v2/systems` (top-level) rather than
  nested under `/api/v2/projects/:projectId/...`. Implemented as top-level and
  project-scoped: `projectId` is supplied by the client (query param for the two
  reads, body field for create) and copied onto `req.params.projectId` so the
  existing `hasRolesOrProjectAccess` middleware is reused unchanged. Reads use
  `PROJECT_VIEW`, create uses `PROJECT_EDIT` — no new permissions.
- No new DDL/DB functions/permissions were added, per the spec's out-of-scope list.

## Open questions for the human reviewer
- **`CommissioningSystem` DB objects (e2e only).** The service assumes the table
  `xyz."CommissioningSystem"` and functions `fn_GetCommissioningSystemList` /
  `fn_GetCommissioningSystem` / `fn_InsertCommissioningSystem` already exist in
  the database (per the spec, and consistent with how the `Asset`/`SystemType`
  siblings are wired). These live in the external `PostgreSQLDatabase` repo and
  are owned by the pg/citus specialists — not the api2 layer. The api2
  verification commands (`tsc`, `npm test`) do not depend on them and pass. If
  the mandatory e2e suite (`npm run test:e2e:local`, run with Docker) is red, it
  will be because those DB objects are absent or have a different
  signature/column casing than the `Asset` convention this code mirrors; that is
  a DB-repo change, not an api2 change. This matches the recorded open question
  in the pipeline learnings (`"System" → xyz.CommissioningSystem` mapping).