Makefile: thin shims only, add make build (closes #73)

The Makefile is now one shim per script/ entrypoint, in the order of
the canonical model Makefile, plus build, generate and fuzz. The new
script/build writes bin/mfer with the urfave_cli_no_docs tag and the
git describe revision that script/docker stamps. script/generate now
adds the Go bin directory to PATH itself, and the Docker lint stage
calls script/gofumpt --check directly. Removed: the tarball-caching
rules and their ignore entries, godoc, ci, fixme, clean, run, default,
fmt-check-go, fmt-check-md, and bin/gitrev.sh, which only the
Makefile called.

Model: opus-5-5

Makefile

@@ -1,20 +1,8 @@
-export DOCKER_BUILDKIT := 1
-export PROGRESS_NO_TRUNC := 1
-GOPATH := $(shell go env GOPATH)
-export PATH := $(PATH):$(GOPATH)/bin
-SOURCEFILES := mfer/*.go mfer/*.proto internal/*/*.go cmd/*/*.go go.mod go.sum
-ARCH := $(shell uname -m)
-GITREV_BUILD := $(shell bash $(PWD)/bin/gitrev.sh 2>/dev/null || echo unknown)
-APPNAME := mfer
-VERSION := 0.1.0
-export DOCKER_IMAGE_CACHE_DIR := $(HOME)/Library/Caches/Docker/$(APPNAME)-$(ARCH)
-GOLDFLAGS += -X main.Version=$(VERSION)
-GOLDFLAGS += -X main.Gitrev=$(GITREV_BUILD)
-GOFLAGS := -ldflags "$(GOLDFLAGS)"
+.PHONY: bootstrap setup test lint fmt fmt-check check docker hooks build generate fuzz
 
-.PHONY: bootstrap setup docker default run ci test fuzz check lint fmt fmt-check fmt-check-go fmt-check-md hooks fixme generate
-
-default: fmt test
+# Makefile targets are thin shims; the implementations live in script/
+# per the scripts-to-rule-them-all pattern (see the Entrypoints section
+# of README.md).
 
 bootstrap:
 	@script/bootstrap
@@ -22,75 +10,32 @@ bootstrap:
 setup:
 	@script/setup
 
-run: ./bin/mfer
-	./$<
-	./$< gen
-
-ci: test
-
 test:
 	@script/test
 
-fuzz:
-	@script/fuzz
-
-fixme:
-	@grep -nir fixme . | grep -v Makefile
-
-check:
-	@script/check
-
-fmt-check:
-	@script/fmt-check
-
-# Halves of fmt-check, for environments that have only one toolchain:
-# the Docker lint stage has Go but no node, the markdown stage the reverse.
-fmt-check-go:
-	@script/gofumpt --check
-
-fmt-check-md:
-	@script/prettier --check
-
-hooks:
-	@script/install-precommit
-
-generate:
-	@script/generate
-
-bin/mfer: $(SOURCEFILES)
-	cd cmd/mfer && go build -tags urfave_cli_no_docs -o ../../bin/mfer $(GOFLAGS) .
-
-clean:
-	rm -rfv bin/mfer cmd/mfer/mfer *.dockerimage
-
-fmt:
-	@script/fmt
-
 lint:
 	@script/lint
 
+fmt:
+	@script/fmt
+
+fmt-check:
+	@script/fmt-check
+
+check:
+	@script/check
+
 docker:
 	@script/docker
 
-sneak-mfer.$(ARCH).tzst.dockerimage: $(SOURCEFILES) vendor.tzst modcache.tzst
-	docker build --progress plain --build-arg GITREV=$(GITREV_BUILD) -t sneak/mfer .
-	docker save sneak/mfer | pv | zstdmt -19 > $@
-	du -sh $@
+hooks:
+	@script/install-precommit
 
-godoc:
-	open http://127.0.0.1:6060
-	godoc -http=:6060
+build:
+	@script/build
 
-vendor.tzst: go.mod go.sum
-	go mod tidy
-	go mod vendor
-	cd vendor && tar -c . | pv | zstdmt -19 > $(PWD)/$@.tmp
-	rm -rf vendor
-	mv $@.tmp $@
+generate:
+	@script/generate
 
-modcache.tzst: go.mod go.sum
-	go mod tidy
-	cd $(HOME)/go/pkg && chmod -R u+rw . && rm -rf mod sumdb
-	go mod download -x
-	cd $(shell go env GOMODCACHE) && tar -c . | pv | zstdmt -19 > $(PWD)/$@.tmp
-	mv $@.tmp $@
+fuzz:
+	@script/fuzz