The four endpoint routes and the 5-minute discovery sweep each read
custom-model-hosts.json, changed their copy and wrote it back through one
shared temp file name. Two of them at once could tear the file or drop each
other's record: ten creates sent together did not all land.
Every write now goes through mutateCustomModelHosts() (one promise chain, a
random temp name, mode 0600), with each check inside the same step as its
write. A file that does not parse is refused with 409 and never replaced.
A delete of an unknown id no longer rewrites the file. A guard test fails
any other writer in src/.
The id `local-ollama` is reserved for the model Codeman runs on this Mac: a
new endpoint may not take it, and while the record is the managed one it is
not edited, deleted or re-discovered from these routes.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
The types, the module skeletons and the test fake that let the runtime, the
install job and the window be built at the same time.
Types:
- src/types/local-model-install.ts (new): the runtime pin, the install
states, steps and error codes with one sentence and one next step each,
the progress, the `install` object of GET /api/local-model, the bodies and
409 answers of the install verbs, the state file. `LocalModelStatus` moves
here; `install` is optional until the route emits it.
- src/types/local-model.ts: the catalogue row's Mac memory figures, the
measured speed of a tested entry, the `measured` budget source,
`RecommendOptions`, and the row tag, the coding agents and the install
total of a candidate. All optional until the catalogue and `recommend()`
carry them, so the read-only stage keeps compiling and its tests stay
green.
Modules with final signatures and bodies that throw:
runtime.ts (the compiled pin is final), ollama-client.ts, developer-tools.ts,
state-store.ts, install-job.ts (the state, step and transition tables are
final), connect.ts, custom-model-hosts-writer.ts, cli-install-runner.ts.
Nothing imports them yet, so the server is unchanged.
Implemented: paths.ts (every folder of the feature, from dataPath()), and
`modelFitsBudget()` in recommend.ts, the judgement the job makes with the
measured budget before it downloads a model. `recommend()` takes the options
parameter and does not read it yet.
Test fake: test/fixtures/fake-ollama.ts, a runtime on a port the system
picks, in the shapes measured on a Mac: version, tags, ps, the pull stream
(MLX and GGUF lines, an error line, a cut stream, a resumed pull), chat with
and without a tool call, the model list, a runtime archive with Range
support, and a fake child process that logs the device total.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Codeman maintainer