T01: crate, window, check script, CI

scripts/check.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+# Pre-review gate: build rules plus house rules.
+set -eu
+cargo fmt --check
+cargo clippy --all-targets -- -D warnings
+cargo test --quiet
+fail=0
+files=$(git ls-files -co --exclude-standard '*.rs')
+multi=$(awk 'FNR==1{prev=0} /^[[:space:]]*\/\// {if(prev) print FILENAME":"FNR; prev=1; next} {prev=0}' $files)
+[ -z "$multi" ] || { echo "multi-line comments:"; echo "$multi"; fail=1; }
+for f in $(git ls-files -co --exclude-standard); do
+  case "$f" in *.rs|*.md|*.sh|*.zsh|*.bash|*.fish|*.ps1|*.toml|*.yml) ;; *) continue ;; esac
+  n=$(wc -l < "$f")
+  [ "$n" -le 500 ] || { echo "$f has $n lines"; fail=1; }
+done
+exit $fail