chore(devex): expose 'make check' / 'check-all' on the existing Makefile (backend#1606)

[LukasWodka]

Summary

Today every repo in the org has a different incantation for "run your
tests": python manage.py test here, yarn test:coverage there,
make ci in cli, pytest tests/ -m "not slow" somewhere else. That
makes "run your tests before you push" a rule you can only obey if you
already know the repo — which means it is not really a rule, it is
tribal knowledge with a rule's wording. The people most likely to break
it are exactly the people least likely to know the incantation.

backend#1606 fixes that by giving every active repo the same three
targets:

make check lint + fast tests. Budget: UNDER 60 SECONDS.
make check-all everything CI runs, minus the CI-only heavy suites.
make setup install what those targets need.

The 60-second budget is not decoration. It is the property that decides
whether anyone runs the thing: a make check that takes ten minutes is
a rule people learn to skip, and skipping one rule teaches skipping
others. So the split between check and check-all is drawn on
measured wall-clock time, not on taste.

The Makefile is a THIN WRAPPER. Every command in it was lifted from the
workflow that already runs it. It adds no tool, no config, and no rule,
and it changes no CI workflow — making CI call make check is a
separate, later wave (decision 2 on backend#1606), deliberately kept out
of this PR so that a Makefile bug cannot redden the pipeline. No
pre-commit or pre-push hook is installed here either; that is step 4.

In this repo

cli already had a Makefile with a ci target, so this EXTENDS it rather
than replacing it. ci keeps its name — too much muscle memory and too
many docs point at it — and check-all is an alias for it.

make check — MEASURED 19.6 s, versus 56 s for the same set with the
race detector on:

vet + test-fast + fmt-check + file-budget + check-style

test-fast is new: go test ./... without -race. That single flag is
the difference between fitting the budget and not (18 s vs 56 s for
identical assertions), and ci still runs the -race form, so no race
signal is lost from the PR gate.

Held back from check for measured reasons:

• -race 3x the wall clock for the same assertions.
• lint/lint-full go run tool@version builds from source on a cold
  cache; golangci-lint alone is 1-2 minutes.
• vulncheck needs https://vuln.go.dev.
• schema-check fetches data-ingestors at the pinned ref.
• deadcode another go run tool@version fetch.

The k3d e2e suite stays CI-only by name, per decision 1 on backend#1606.

Related

Step 1 of tracebloc/backend#1606 — a Makefile with a uniform check target in every active repo. One PR per repo; this is this repo's.

Type of change

• Tech-debt / refactor (developer experience)

Test plan

make check run for real: green in 19.6 s. The same set with -race
measured at 56 s, which is exactly why test-fast exists. make help and the
dry runs of every target parse clean; ci is unchanged and still runs test
(with -race).

No CI workflow is touched in this PR. CI parity — making the workflows call make check — is decision 2 on backend#1606 and lands as its own wave, deliberately after the Makefiles exist and are proven locally. No pre-commit or pre-push hook is installed here either; that is step 4.

Checklist

• Works from a clean checkout — .PHONY on every target, help is the default goal
• No CI workflow modified
• No pre-commit / pre-push hook installed
• No secrets / credentials in the diff
• Every command is copied from the workflow that already runs it — no new tool, no new config, no new rule
• Portable to GNU Make 3.81 (the macOS system make)

---

Note

Low Risk
Makefile-only developer-experience wrappers; ci behavior is unchanged and no CI or runtime code is modified.

Overview
Aligns tracebloc/cli with backend#1606 by exposing the same three Makefile entry points as other org repos: make check (fast pre-push gate), make check-all (alias for existing ci), and make setup (go mod download).

make check runs vet, new test-fast (go test without -race), fmt-check, file-budget, and check-style so the loop stays under ~60s; race detection, lint, vulncheck, schema-check, and deadcode remain on ci / check-all. help is now the default goal and documents the targets.

No CI workflows or hooks are changed—only thin wrappers over commands that already existed.

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