phase: 20.49 COMPLETE; 20.50 Flow+String minimal reps; 20.51 selfhost v0/v1 minimal (Option A/B); hv1-inline binop/unop/copy; docs + run_all + CURRENT_TASK -> 21.0

tools/dev/at_local_preexpand.sh

@@ -3,8 +3,8 @@ set -euo pipefail
 
 # Pre-expand dev sugar: line-head "@name[: Type] = expr" -> "local name[: Type] = expr"
 # Usage:
-#   tools/dev/at_local_preexpand.sh < input.nyash > output.nyash
-#   or tools/dev/at_local_preexpand.sh input.nyash > output.nyash
+#   tools/dev/at_local_preexpand.sh < input.hako > output.hako
+#   or tools/dev/at_local_preexpand.sh input.hako > output.hako
 
 in="${1:-}"
 if [ -n "$in" ]; then

tools/dev/dev_sugar_preexpand.sh

@@ -8,8 +8,8 @@ set -euo pipefail
 #  - a += b (and -=, *=, /=) as statements
 #  - i++ / i-- as statements (not expressions)
 # Usage:
-#   tools/dev/dev_sugar_preexpand.sh < input.nyash > output.nyash
-#   or tools/dev/dev_sugar_preexpand.sh input.nyash > output.nyash
+#   tools/dev/dev_sugar_preexpand.sh < input.hako > output.hako
+#   or tools/dev/dev_sugar_preexpand.sh input.hako > output.hako
 
 in="${1:-}"
 if [ -n "$in" ]; then

tools/dev/rename_nyash_to_hako.sh

@@ -0,0 +1,83 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# rename_nyash_to_hako.sh — 拡張子/参照の一括変換（安全志向）
+#
+# 目的:
+#  1) 拡張子 .nyash → .hako にファイルをリネーム（git mv）
+#  2) テキスト中の ".nyash" リテラルを ".hako" に書換
+#
+# 既定は DRY-RUN（変更無し）。
+# 実行例:
+#  DRY_RUN=0 RENAME_EXT=1 REWRITE_TEXT=1 ./tools/dev/rename_nyash_to_hako.sh
+#
+# 環境変数:
+#  - DRY_RUN=1: 乾行（既定1）
+#  - RENAME_EXT=1: .nyash → .hako のファイルリネームを有効化
+#  - REWRITE_TEXT=1: テキスト置換（.nyash→.hako）を有効化
+#  - SKIP_GLOBS: 追加スキップ（コロン区切り、例: "dist:build:some_dir"）
+
+DRY_RUN="${DRY_RUN:-1}"
+RENAME_EXT="${RENAME_EXT:-0}"
+REWRITE_TEXT="${REWRITE_TEXT:-0}"
+
+ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
+cd "$ROOT"
+
+log() { echo "[rename] $*" >&2; }
+
+should_skip() {
+  case "$1" in
+    ./target/*|.git/*|./.git/*|./.github/*|./node_modules/*|./target) return 0 ;;
+  esac
+  if [ -n "${SKIP_GLOBS:-}" ]; then
+    IFS=':' read -r -a gl <<<"$SKIP_GLOBS"
+    local f="$1"
+    for g in "${gl[@]}"; do
+      case "$f" in
+        ./$g/*|./$g) return 0 ;;
+      esac
+    done
+  fi
+  return 1
+}
+
+# 1) ファイル拡張子のリネーム（git mv）
+if [ "$RENAME_EXT" = "1" ]; then
+  log "Scanning files to rename (.nyash → .hako)"
+  mapfile -t files < <(git ls-files | grep -E '\.nyash$' || true)
+  for f in "${files[@]}"; do
+    [ -z "$f" ] && continue
+    if should_skip "./$f"; then continue; fi
+    dest="${f%.nyash}.hako"
+    if [ "$DRY_RUN" = "1" ]; then
+      log "DRY-RUN git mv '$f' '$dest'"
+    else
+      log "git mv '$f' '$dest'"
+      git mv "$f" "$dest" || { log "WARN: git mv failed: $f"; }
+    fi
+  done
+fi
+
+# 2) テキスト置換（.nyash → .hako）
+if [ "$REWRITE_TEXT" = "1" ]; then
+  log "Rewriting text occurrences (.nyash → .hako)"
+  # 候補ファイル（テキストファイル）: git 管理対象のみ、バイナリ除外
+  mapfile -t tfs < <(git ls-files | xargs file | rg ':\s+text' -n | cut -d: -f1)
+  for f in "${tfs[@]}"; do
+    [ -z "$f" ] && continue
+    if should_skip "./$f"; then continue; fi
+    if rg -q '\.nyash\b' "$f"; then
+      if [ "$DRY_RUN" = "1" ]; then
+        log "DRY-RUN sed -i '.nyash'→'.hako' in $f"
+      else
+        tmp="$(mktemp)"
+        sed 's/\.nyash\b/.hako/g' "$f" > "$tmp" && mv "$tmp" "$f"
+      fi
+    fi
+  done
+fi
+
+log "Done (DRY_RUN=$DRY_RUN RENAME_EXT=$RENAME_EXT REWRITE_TEXT=$REWRITE_TEXT)"
+exit 0
+