## What was red
| File | Failures | Error |
|---|---:|---|
| `notification/__tests__/notification-service.test.ts` | 26 |
`schedulerLog.debug is not a function` |
| `runtimes/__tests__/child-process-worker.test.ts` | 12 |
`runtimeLog.debug is not a function` |
`debug` is part of the logger surface (`logger.ts:25`) — the channel the
noisy-line demotion moved subsystem chatter onto, gated on
`FUSION_DEBUG`. A mock that omits it throws on the **first** demoted
call, failing every case in the file for a reason unrelated to what any
of them assert. These two were missed by the earlier sweep across 27
engine files.
## Measured
| Check | Result |
|---|---|
| the two files | 38 failed → **38 passed** |
| `debug` removed from the mocks again | **38 failed** — the entries are
load-bearing |
| `pnpm test:gate` | **726 passed** |
| `pnpm lint` | clean |
Census unchanged — test files only.
## Two real drifts under the mock gap
Both re-pointed at what the product actually does, not relaxed:
**1. Suppression lines are `debug`, not `log`.**
`notification-service.ts` routes all five of its `"suppressed ..."`
messages through `schedulerLog.debug`. Two assertions looked on `.log` —
where the product no longer writes. Verified by grepping the product for
the message before editing the test, rather than assuming the mock was
the whole story.
**2. `centralCore.getGlobalConcurrencyState` is DELETED, not missing.**
The cross-project cap was dropped deliberately (`central-core.ts:2124`,
`FNXC:CapacityModel 2026-07-28-23:30`) together with
`updateGlobalConcurrency`, `acquireGlobalSlot`, `releaseGlobalSlot` and
the `concurrency:changed` event — capacity is two numbers **per
project** now. That comment also records the slot pair was already dead:
no production caller ever invoked it, so `currentlyActive` was never
incremented by real work.
The worker's stub provides `getLiveRunningAgentCounts` and
`recordTaskCompletion`, so the case is re-pinned to the former. It had
been pinning an API the product removed on purpose — the assertion would
have kept "passing" a shape that no longer exists if the stub had
happened to retain a same-named field.
## Flagged, deliberately not changed
`ipc/__tests__/ipc-host.test.ts` and `ipc/__tests__/ipc-worker.test.ts`
carry the **same incomplete logger mock** but are currently green (56
passed) because no demoted line is reached on their paths.
Adding `debug` there cannot be shown to fail today, so it is recorded
here rather than slipped in as an unfalsifiable edit. They go red the
moment any code they exercise demotes a line — which is how the 29 files
before them broke. Found by scanning every engine logger mock for the
pattern, not by guessing.
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