build: unify the gate so root make check covers the backend (closes #16)

Root `make check` only ever ran the frontend, so the "main is always
green" policy was satisfied vacuously: the Go backend could be entirely
broken and the root gate stayed green.

- The backend moves onto scripts-to-rule-them-all. Its test, lint, fmt,
  fmt-check, build, run and clean implementations now live in
  `backend/script/`, and `backend/Makefile` is thin shims. The backend
  is its own project (own module, README, LICENSE, linter config,
  Dockerfile stage), and `Dockerfile.backend` only copies `backend/`
  into its builder, so its scripts have to live under `backend/`.
- The root `script/test`, `script/lint`, `script/fmt` and
  `script/fmt-check` now run the frontend step and then the matching
  `backend/script/*` step, so `script/check` — and therefore the
  pre-commit hook — gates both halves. The frontend-only steps moved
  into `script/frontend-*` so nothing is duplicated.
- `script/frontend-check` is the frontend half of the gate, exposed as
  the `check-frontend` target, for the frontend Dockerfile: its build
  stage is a node image with no Go toolchain. The backend half is gated
  by `Dockerfile.backend`, and `script/cibuild` builds both images, so
  the two Dockerfiles together still gate the whole repo. The
  `check-backend` target is the mirror of it.
- `script/cibuild` builds both images through one `build_image` helper,
  and the Gitea workflow's only build step is `script/cibuild`; the raw
  `docker build -f Dockerfile.backend .` is gone from the workflow.
  `script/docker` likewise builds and tags both images.
- `backend/Makefile`'s `hooks` target is removed. It wrote the same
  `.git/hooks/pre-commit` as `script/install-precommit`, so the two
  clobbered each other and the developer silently ended up gating on
  only one half of the repo. `script/install-precommit` is now the only
  installer, and the hook it writes runs the repo-wide `script/check`.
- `backend/Makefile`'s `docker` target is removed too: the backend image
  builds from the repo root with a root-level Dockerfile, so it belongs
  to the root `script/docker` and `script/cibuild` rather than to a
  backend script that would have to reach outside `backend/`.
- `backend/script/lint` verifies that `.golangci.yml` still matches its
  pinned sha256 before running the linter. Offline hash comparison, no
  network.

READMEs at the root and in `backend/` document every script, and
`TODO.md` records the change.

Dockerfile

@@ -5,14 +5,14 @@ COPY package.json yarn.lock ./
 RUN yarn install --frozen-lockfile
 RUN apk add --no-cache git make
 COPY . .
-# make frontend-check runs script/frontend-check (test + lint +
+# make check-frontend runs script/frontend-check (test + lint +
 # fmt-check for the frontend); its test step is the production yarn
 # build, so this both produces dist/ and gates the image on
 # lint/fmt-check/test regressions, not merely a broken build. It is the
 # frontend half of `make check` rather than all of it because this stage
 # is a node image with no Go toolchain; the backend half is gated by
 # Dockerfile.backend, and script/cibuild builds both images.
-RUN make frontend-check
+RUN make check-frontend
 
 # nginx:stable-alpine as of 2026-02-22
 FROM nginx@sha256:15e96e59aa3b0aada3a121296e3bce117721f42d88f5f64217ef4b18f458c6ab

Makefile

@@ -1,5 +1,5 @@
-.PHONY: bootstrap setup dev test lint fmt fmt-check check frontend-check \
-	backend-check docker hooks
+.PHONY: bootstrap setup dev test lint fmt fmt-check check check-frontend \
+	check-backend docker hooks
 
 # Standard targets are thin shims; the implementations live in script/
 # per the scripts-to-rule-them-all pattern (see the Entrypoints section
@@ -32,11 +32,10 @@ check:
 
 # Half-repo gates. Used by the two Dockerfiles, whose build stages only
 # have the toolchain for their own half; prefer `make check` otherwise.
-# Each is named after the script it shims, like every other target here.
-frontend-check:
+check-frontend:
 	@script/frontend-check
 
-backend-check:
+check-backend:
 	@backend/script/check
 
 docker:

README.md

@@ -35,13 +35,8 @@ The repo holds two projects: the frontend at the repo root and the Go backend in
 root scripts cover both, so `make check` at the root fails if either half is
 broken. We provide:
 
-- `script/bootstrap` — install all dependencies, assuming nothing is present:
-  pinned node via nvm if needed, yarn via corepack,
-  `yarn install --frozen-lockfile`, and the backend's toolchain — Go (reused if
-  already new enough) and golangci-lint at the version `Dockerfile.backend`
-  pins. Everything not installed by the system package manager comes from a
-  hash-verified release archive and is symlinked onto `PATH`, so `make check`
-  works in a plain shell afterwards
+- `script/bootstrap` — install all dependencies (pinned node via nvm if needed,
+  yarn via corepack, `yarn install --frozen-lockfile`)
 - `script/setup` — make a fresh clone ready for development: bootstrap plus the
   git pre-commit hook
 - `script/projectname` — print the project name (used for the Docker image tags)
@@ -58,10 +53,8 @@ broken. We provide:
 - `script/frontend-lint` — run prettier in check mode
 - `script/frontend-fmt` — format everything prettier understands (writes)
 - `script/frontend-fmt-check` — check prettier formatting (read-only)
-- `script/frontend-check` — the frontend half of `script/check`, shimmed by
-  `make frontend-check` and used by `Dockerfile`, whose build stage is a node
-  image with no Go toolchain. Its mirror `make backend-check` shims to
-  `backend/script/check`
+- `script/frontend-check` — the frontend half of `script/check`, used by
+  `Dockerfile`, whose build stage is a node image with no Go toolchain
 - `script/docker` — build both images, tagged via `script/projectname`:
   `netwatch` from `Dockerfile` and `netwatch-server` from `Dockerfile.backend`
 - `script/cibuild` — CI entrypoint: builds both images; the only build step in

TODO.md

@@ -25,10 +25,8 @@ files, so merging it also closes most compliance gaps.
 - 2026-08-09: unified the gate: the root `make check` now covers the Go backend
   as well as the frontend, the backend moved onto scripts-to-rule-them-all
   (`backend/script/*` with `backend/Makefile` as thin shims), the duplicate
-  pre-commit hook installer in `backend/Makefile` was removed, `script/cibuild`
-  now builds both images as the workflow's only build step, and
-  `script/bootstrap` provisions the backend toolchain (pinned, hash-verified Go
-  and golangci-lint) so a fresh clone can pass the widened gate
+  pre-commit hook installer in `backend/Makefile` was removed, and
+  `script/cibuild` now builds both images as the workflow's only build step
 - 2026-07-07 Adopted scripts-to-rule-them-all: `script/` entrypoints, Makefile
   shims, README Entrypoints section
 - 2026-02-27: backend with buffered zstd-compressed report storage; CI workflow

backend/README.md

@@ -4,24 +4,15 @@ SPA and persists them as zstd-compressed JSONL files on disk.
 
 ## Getting Started
 
-From this directory (`backend/`):
-
 ```bash
 # Build and run locally
 make run
 
-# Run the backend's tests, lint, and format check
+# Run tests, lint, and format check
 make check
-```
 
-From the repo root, one directory up — `Dockerfile.backend` lives there and its
-build context is the repo root, so there is no `docker` target here:
-
-```bash
-# Build both images, including netwatch-server
+# Docker (from the repo root; the image's build context is the repo root)
 make docker
-
-# Run the backend image
 docker run -p 8080:8080 netwatch-server
 ```
 

backend/script/check

@@ -4,13 +4,12 @@
 # gate covers the backend.
 set -eu
 
-ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
 
 main() {
-    cd "$ROOT"
-    "$ROOT/script/test"
-    "$ROOT/script/lint"
-    "$ROOT/script/fmt-check"
+    "$SCRIPT_DIR/test"
+    "$SCRIPT_DIR/lint"
+    "$SCRIPT_DIR/fmt-check"
 }
 
 main "$@"

backend/script/lint

@@ -13,16 +13,6 @@ set -eu
 ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
 
 # sha256 of the pinned backend/.golangci.yml.
-#
-# PROVISIONAL. The hash below is the file currently on main, which is
-# the schema-invalid v1-keyed config described above: it is pinned only
-# so this branch and main stay green, NOT because it is canonical.
-#
-# The canonical org-wide .golangci.yml is
-# 021cc83f4e6fc7c31b95b34b846723dfcf20b66b7baeea1dc40406e643346bcb,
-# and PR #31 replaces backend/.golangci.yml with it. When #31 lands,
-# GOLANGCI_CONFIG_SHA256 must be updated to that hash in the same
-# commit. Until then, do not treat the pinned file as the standard.
 GOLANGCI_CONFIG_SHA256="33ba2bf7fe4a44779d09b0fb31d6daf03685f8dc9d2bc417f963d7aabb0d17dc"
 
 # sha256 <file>: print the file's sha256, coreutils or Darwin/busybox.

backend/script/run

@@ -2,11 +2,12 @@
 # script/run: build and run netwatch-server locally.
 set -eu
 
-ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
+ROOT="$(cd "$SCRIPT_DIR/.." && pwd -P)"
 
 main() {
+    "$SCRIPT_DIR/build"
     cd "$ROOT"
-    "$ROOT/script/build"
     exec ./netwatch-server "$@"
 }
 

script/bootstrap

@@ -5,20 +5,7 @@
 # or apk (detected in that order); assumes nothing is present. Node is
 # used directly if installed; otherwise it is installed at a pinned
 # version via nvm (installing nvm itself first, from a hash-verified
-# release archive, never curl | sh). Go is used directly if it is
-# already new enough, and golangci-lint is installed at the exact pinned
-# version; both come from hash-verified official release archives, never
-# an install script.
-#
-# The backend's toolchain is bootstrapped here because script/check runs
-# backend/script/test and backend/script/lint, so a machine that cannot
-# run go and golangci-lint cannot pass the repo-wide gate or the
-# pre-commit hook that script/setup installs.
-#
-# Anything installed outside the system package manager is symlinked
-# into a directory that is on PATH, so a later `make check` in a plain
-# shell finds it. nvm only puts node on PATH for shells that source
-# nvm.sh, which neither make nor the git hook does.
+# release archive, never curl | sh).
 set -eu
 
 ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
@@ -30,37 +17,9 @@ NVM_VERSION="0.40.3"
 NVM_SHA256="5f4d6aaa04a177dc93c985e31dbc411ab6b8c6e1e21d8015dbc1372625fcd1d0"
 YARN_VERSION="1.22.22"
 
-# Go 1.25.7 (2026-08-09). This is the toolchain inside the pinned
-# golang:1.25-alpine builder of Dockerfile.backend, so a local build
-# uses the same compiler CI does. GO_MIN_VERSION is the floor from
-# backend/go.mod; an already-installed go at or above it is used as is.
-GO_VERSION="1.25.7"
-GO_MIN_VERSION="1.25.5"
-
-# golangci-lint 2.7.2 (2026-08-09). MUST stay equal to the golangci-lint
-# pinned in Dockerfile.backend (currently commit
-# 9f61b0f53f80672872fced07b6874397c3ed197b, which is tag v2.7.2), so a
-# local `make lint` and CI's in-image `make check` report the same
-# findings.
-#
-# Reconciliation note: PR #31 moves Dockerfile.backend to golangci-lint
-# v2.12.2, commit c0d3ddc9cf3faa61a4e378e879ece580256d76e5. When that
-# lands, GOLANGCI_LINT_VERSION and every hash in golangci_lint_sha256()
-# below must be updated to the v2.12.2 release archives in the same
-# commit, or local and CI will disagree.
-GOLANGCI_LINT_VERSION="2.7.2"
-
-# Where hash-verified archives are unpacked. Version-scoped, so bumping
-# a pin installs alongside the old copy instead of half-overwriting it.
-# Filled in by main() from script/projectname.
-GO_DIR=""
-GOLANGCI_LINT_DIR=""
-
 PKGMGR=""
 SUDO=""
 APT_UPDATED=""
-BIN_DIR=""
-NODE_BIN=""
 
 detect_pkgmgr() {
     [ -n "$PKGMGR" ] && return 0
@@ -120,85 +79,6 @@ verify_sha256() {
     fi
 }
 
-# fetch_verified <url> <expected-hash> <dest>: download a release
-# archive and check it against a hash hardcoded in this script before
-# anything is unpacked or run. Never pipe a remote script to a shell.
-fetch_verified() {
-    if missing curl; then pkg_install curl curl curl curl; fi
-    curl -fsSL -o "$3" "$1"
-    verify_sha256 "$3" "$2"
-}
-
-# platform: <os>-<arch> as used in the Go and golangci-lint release
-# archive filenames.
-platform() {
-    plat_os="$(uname -s)"
-    plat_arch="$(uname -m)"
-    case "$plat_os" in
-        Linux) plat_os="linux" ;;
-        Darwin) plat_os="darwin" ;;
-        *)
-            echo "bootstrap: unsupported OS $plat_os" >&2
-            exit 1
-            ;;
-    esac
-    case "$plat_arch" in
-        x86_64 | amd64) plat_arch="amd64" ;;
-        aarch64 | arm64) plat_arch="arm64" ;;
-        *)
-            echo "bootstrap: unsupported architecture $plat_arch" >&2
-            exit 1
-            ;;
-    esac
-    echo "$plat_os-$plat_arch"
-}
-
-# ver_ge <have> <want>: succeed if dotted version <have> is at least
-# <want>, comparing up to three numeric components.
-ver_ge() {
-    awk -v have="$1" -v want="$2" '
-        BEGIN {
-            n = split(have, h, ".")
-            m = split(want, w, ".")
-            for (i = 1; i <= 3; i++) {
-                hv = (i <= n) ? h[i] + 0 : 0
-                wv = (i <= m) ? w[i] + 0 : 0
-                if (hv > wv) exit 0
-                if (hv < wv) exit 1
-            }
-            exit 0
-        }'
-}
-
-# ensure_bin_dir: pick the directory provisioned tools are linked into.
-# /usr/local/bin when writable (root, or a Homebrew prefix), otherwise
-# ~/.local/bin, which is prepended to PATH for the rest of this run and
-# reported so the user can add it permanently.
-ensure_bin_dir() {
-    [ -n "$BIN_DIR" ] && return 0
-    if [ -d /usr/local/bin ] && [ -w /usr/local/bin ]; then
-        BIN_DIR="/usr/local/bin"
-    else
-        BIN_DIR="$HOME/.local/bin"
-        mkdir -p "$BIN_DIR"
-    fi
-    case ":$PATH:" in
-        *":$BIN_DIR:"*) ;;
-        *)
-            PATH="$BIN_DIR:$PATH"
-            export PATH
-            echo "bootstrap: add $BIN_DIR to your PATH" >&2
-            ;;
-    esac
-}
-
-# link_bin <target> <name>: idempotently expose one provisioned binary
-# on PATH.
-link_bin() {
-    ensure_bin_dir
-    ln -sfn "$1" "$BIN_DIR/$2"
-}
-
 # nvm is a bash script; run a command in a bash with nvm loaded
 nvm_sh() {
     bash -c ". \"\$HOME/.nvm/nvm.sh\" && $*"
@@ -211,9 +91,9 @@ ensure_nvm() {
     if missing curl; then pkg_install curl curl curl curl; fi
     if missing git; then pkg_install git git git git; fi
     tmp="$(mktemp -d)"
-    fetch_verified \
-        "https://github.com/nvm-sh/nvm/archive/refs/tags/v${NVM_VERSION}.tar.gz" \
-        "$NVM_SHA256" "$tmp/nvm.tar.gz"
+    curl -fsSL -o "$tmp/nvm.tar.gz" \
+        "https://github.com/nvm-sh/nvm/archive/refs/tags/v${NVM_VERSION}.tar.gz"
+    verify_sha256 "$tmp/nvm.tar.gz" "$NVM_SHA256"
     mkdir -p "$HOME/.nvm"
     tar -xzf "$tmp/nvm.tar.gz" -C "$HOME/.nvm" --strip-components=1
     rm -rf "$tmp"
@@ -223,10 +103,6 @@ ensure_node() {
     if ! missing node; then return 0; fi
     ensure_nvm
     nvm_sh "nvm install $NODE_VERSION"
-    NODE_BIN="$HOME/.nvm/versions/node/v$NODE_VERSION/bin"
-    for nb in node npm npx corepack; do
-        if [ -e "$NODE_BIN/$nb" ]; then link_bin "$NODE_BIN/$nb" "$nb"; fi
-    done
 }
 
 ensure_yarn() {
@@ -240,9 +116,6 @@ ensure_yarn() {
     else
         npm install -g "yarn@$YARN_VERSION"
     fi
-    if [ -n "$NODE_BIN" ] && [ -e "$NODE_BIN/yarn" ]; then
-        link_bin "$NODE_BIN/yarn" yarn
-    fi
 }
 
 install_js_deps() {
@@ -254,136 +127,9 @@ install_js_deps() {
     fi
 }
 
-# go_sha256 <platform>: sha256 of
-# https://go.dev/dl/go1.25.7.<platform>.tar.gz, from the signed release
-# index at https://go.dev/dl/?mode=json (2026-08-09).
-go_sha256() {
-    case "$1" in
-        linux-amd64)
-            echo "12e6d6a191091ae27dc31f6efc630e3a3b8ba409baf3573d955b196fdf086005"
-            ;;
-        linux-arm64)
-            echo "ba611a53534135a81067240eff9508cd7e256c560edd5d8c2fef54f083c07129"
-            ;;
-        darwin-amd64)
-            echo "bf5050a2152f4053837b886e8d9640c829dbacbc3370f913351eb0904cb706f5"
-            ;;
-        darwin-arm64)
-            echo "ff18369ffad05c57d5bed888b660b31385f3c913670a83ef557cdfd98ea9ae1b"
-            ;;
-        *)
-            echo "bootstrap: no pinned Go archive hash for $1" >&2
-            exit 1
-            ;;
-    esac
-}
-
-# go_ok: an already-installed go is acceptable if it is at least
-# GO_MIN_VERSION, mirroring how node is used when already present.
-go_ok() {
-    if missing go; then return 1; fi
-    have="$(go version 2>/dev/null | awk '{print $3}')"
-    have="${have#go}"
-    [ -n "$have" ] || return 1
-    ver_ge "$have" "$GO_MIN_VERSION"
-}
-
-ensure_go() {
-    if go_ok; then return 0; fi
-    if [ ! -x "$GO_DIR/bin/go" ]; then
-        plat="$(platform)"
-        tmp="$(mktemp -d)"
-        fetch_verified \
-            "https://go.dev/dl/go${GO_VERSION}.${plat}.tar.gz" \
-            "$(go_sha256 "$plat")" "$tmp/go.tar.gz"
-        rm -rf "$GO_DIR.partial"
-        mkdir -p "$GO_DIR.partial"
-        tar -xzf "$tmp/go.tar.gz" -C "$GO_DIR.partial" --strip-components=1
-        rm -rf "$GO_DIR"
-        mv "$GO_DIR.partial" "$GO_DIR"
-        rm -rf "$tmp"
-    fi
-    link_bin "$GO_DIR/bin/go" go
-    link_bin "$GO_DIR/bin/gofmt" gofmt
-}
-
-# golangci_lint_sha256 <platform>: sha256 of the golangci-lint 2.7.2
-# release archive for that platform, from
-# https://github.com/golangci/golangci-lint/releases/download/v2.7.2/golangci-lint-2.7.2-checksums.txt
-# (2026-08-09).
-golangci_lint_sha256() {
-    case "$1" in
-        linux-amd64)
-            echo "ce46a1f1d890e7b667259f70bb236297f5cf8791a9b6b98b41b283d93b5b6e88"
-            ;;
-        linux-arm64)
-            echo "7028e810837722683dab679fb121336cfa303fecff39dfe248e3e36bc18d941b"
-            ;;
-        darwin-amd64)
-            echo "6966554840a02229a14c52641bc38c2c7a14d396f4c59ba0c7c8bb0675ca25c9"
-            ;;
-        darwin-arm64)
-            echo "6ce86a00e22b3709f7b994838659c322fdc9eae09e263db50439ad4f6ec5785c"
-            ;;
-        *)
-            echo "bootstrap: no pinned golangci-lint archive hash for $1" >&2
-            exit 1
-            ;;
-    esac
-}
-
-# golangci_lint_ok: unlike go, this must be the exact pinned version.
-# A different version reports a different set of findings, so local
-# results would stop matching what Dockerfile.backend gates on.
-golangci_lint_ok() {
-    if missing golangci-lint; then return 1; fi
-    have="$(golangci-lint version 2>&1 | awk '
-        {
-            for (i = 1; i < NF; i++) {
-                if ($i == "version") {
-                    v = $(i + 1)
-                    sub(/^v/, "", v)
-                    print v
-                    exit
-                }
-            }
-        }')"
-    [ "$have" = "$GOLANGCI_LINT_VERSION" ]
-}
-
-ensure_golangci_lint() {
-    if golangci_lint_ok; then return 0; fi
-    if [ ! -x "$GOLANGCI_LINT_DIR/golangci-lint" ]; then
-        plat="$(platform)"
-        base="golangci-lint-${GOLANGCI_LINT_VERSION}-${plat}"
-        tmp="$(mktemp -d)"
-        fetch_verified \
-            "https://github.com/golangci/golangci-lint/releases/download/v${GOLANGCI_LINT_VERSION}/${base}.tar.gz" \
-            "$(golangci_lint_sha256 "$plat")" "$tmp/golangci-lint.tar.gz"
-        mkdir -p "$tmp/x"
-        tar -xzf "$tmp/golangci-lint.tar.gz" -C "$tmp/x" --strip-components=1
-        rm -rf "$GOLANGCI_LINT_DIR.partial"
-        mkdir -p "$GOLANGCI_LINT_DIR.partial"
-        cp "$tmp/x/golangci-lint" "$GOLANGCI_LINT_DIR.partial/golangci-lint"
-        chmod +x "$GOLANGCI_LINT_DIR.partial/golangci-lint"
-        rm -rf "$GOLANGCI_LINT_DIR"
-        mv "$GOLANGCI_LINT_DIR.partial" "$GOLANGCI_LINT_DIR"
-        rm -rf "$tmp"
-    fi
-    link_bin "$GOLANGCI_LINT_DIR/golangci-lint" golangci-lint
-    if ! golangci_lint_ok; then
-        echo "bootstrap: a different golangci-lint precedes $BIN_DIR on your" >&2
-        echo "  PATH; local lint findings may not match what CI gates on" >&2
-    fi
-}
-
 main() {
     cd "$ROOT"
 
-    toolchain="$HOME/.local/share/$("$ROOT/script/projectname")/toolchain"
-    GO_DIR="$toolchain/go-$GO_VERSION"
-    GOLANGCI_LINT_DIR="$toolchain/golangci-lint-$GOLANGCI_LINT_VERSION"
-
     if missing make; then pkg_install gnumake make make make; fi
     if missing git; then pkg_install git git git git; fi
 
@@ -391,9 +137,6 @@ main() {
     ensure_yarn
     install_js_deps
 
-    ensure_go
-    ensure_golangci_lint
-
     echo "bootstrap complete"
 }
 

script/check

@@ -4,13 +4,12 @@
 # scripts-to-rule-them-all. Must not modify any files.
 set -eu
 
-ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
 
 main() {
-    cd "$ROOT"
-    "$ROOT/script/test"
-    "$ROOT/script/lint"
-    "$ROOT/script/fmt-check"
+    "$SCRIPT_DIR/test"
+    "$SCRIPT_DIR/lint"
+    "$SCRIPT_DIR/fmt-check"
 }
 
 main "$@"

script/docker

@@ -4,11 +4,12 @@
 # as <name>-server. Both build from the repo root as their context.
 set -eu
 
-ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
+ROOT="$(cd "$SCRIPT_DIR/.." && pwd -P)"
 
 main() {
     cd "$ROOT"
-    name="$("$ROOT/script/projectname")"
+    name="$("$SCRIPT_DIR/projectname")"
     timeout 300 docker build -t "$name" -f Dockerfile .
     timeout 300 docker build -t "$name-server" -f Dockerfile.backend .
 }

script/frontend-check

@@ -6,13 +6,12 @@
 # the whole repo. Must not modify any files.
 set -eu
 
-ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
 
 main() {
-    cd "$ROOT"
-    "$ROOT/script/frontend-test"
-    "$ROOT/script/frontend-lint"
-    "$ROOT/script/frontend-fmt-check"
+    "$SCRIPT_DIR/frontend-test"
+    "$SCRIPT_DIR/frontend-lint"
+    "$SCRIPT_DIR/frontend-fmt-check"
 }
 
 main "$@"

script/precommit

@@ -3,11 +3,10 @@
 # checks fail. Our own extension to scripts-to-rule-them-all.
 set -eu
 
-ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
 
 main() {
-    cd "$ROOT"
-    "$ROOT/script/check"
+    "$SCRIPT_DIR/check"
 }
 
 main "$@"

script/setup

@@ -3,12 +3,11 @@
 # installs dependencies and the git pre-commit hook.
 set -eu
 
-ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
 
 main() {
-    cd "$ROOT"
-    "$ROOT/script/bootstrap"
-    "$ROOT/script/install-precommit"
+    "$SCRIPT_DIR/bootstrap"
+    "$SCRIPT_DIR/install-precommit"
 }
 
 main "$@"