feat: 接關 hook + SDD 強制 hook（實作 wishlist 兩項）

§1 接關機制（雙保險）：
- session-start-recall.sh：SessionStart 自動注入 status 重點 + 快照核實提醒
- /wiki-recall：fallback 命令，hook 失效時手動接關

§2 軟規範 → 硬攔截：
- sdd-guard.sh：動 code 檔但無 SDD → exit 2 擋（/sdd-check 自動版）
- pre-write-guard.sh：專案自訂禁令骨架（預設停用）
- settings.json：掛 SessionStart + PreToolUse

配套：install.sh 下載 hooks/settings（settings 比照 CLAUDE.md 不覆蓋）；
README/CLAUDE.md 補文件 + 誠實限制聲明。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

scripts/install.sh

@@ -34,6 +34,7 @@ create_dir "docs/5-records/test-reports"
 create_dir "docs/6-user"
 create_dir ".claude/wiki"
 create_dir ".claude/commands"
+create_dir ".claude/hooks"
 
 # ── 檔案（從 repo 下載，只在不存在時）──────────────
 
@@ -58,8 +59,15 @@ download_if_missing ".claude/wiki/decisions-summary.md" "$REPO_URL/.claude/wiki/
 download_if_missing ".claude/commands/wiki-init.md"     "$REPO_URL/.claude/commands/wiki-init.md"
 download_if_missing ".claude/commands/wiki-capture.md"  "$REPO_URL/.claude/commands/wiki-capture.md"
 download_if_missing ".claude/commands/wiki-update.md"   "$REPO_URL/.claude/commands/wiki-update.md"
+download_if_missing ".claude/commands/wiki-recall.md"   "$REPO_URL/.claude/commands/wiki-recall.md"
 download_if_missing ".claude/commands/sdd-check.md"     "$REPO_URL/.claude/commands/sdd-check.md"
 
+# hooks（軟規範 → 硬攔截。下載後補執行權限）
+download_if_missing ".claude/hooks/session-start-recall.sh" "$REPO_URL/.claude/hooks/session-start-recall.sh"
+download_if_missing ".claude/hooks/sdd-guard.sh"            "$REPO_URL/.claude/hooks/sdd-guard.sh"
+download_if_missing ".claude/hooks/pre-write-guard.sh"      "$REPO_URL/.claude/hooks/pre-write-guard.sh"
+chmod +x .claude/hooks/*.sh 2>/dev/null || true
+
 # docs/README.md（分類地圖）
 download_if_missing "docs/README.md" "$REPO_URL/docs/README.md"
 
@@ -70,6 +78,13 @@ else
   SKIPPED+=("CLAUDE.md (已存在，請手動加入 wiki 讀取順序區塊)")
 fi
 
+# .claude/settings.json：只在完全不存在時建立（比照 CLAUDE.md，不覆蓋既有設定）
+if [ ! -f ".claude/settings.json" ]; then
+  download_if_missing ".claude/settings.json" "$REPO_URL/.claude/settings.json"
+else
+  SKIPPED+=(".claude/settings.json (已存在，請手動加入 hooks 區塊)")
+fi
+
 # ── 輸出結果 ──────────────────────────────────────
 
 echo ""
@@ -105,6 +120,21 @@ if [ -f "CLAUDE.md" ]; then
   fi
 fi
 
+# 如果 settings.json 已存在，提醒手動加入 hooks 區塊
+if [ -f ".claude/settings.json" ]; then
+  if ! grep -q "session-start-recall.sh" .claude/settings.json; then
+    echo ""
+    echo "📌 .claude/settings.json 已存在但缺少 hooks。"
+    echo "   請手動把以下 hooks 合併進去（已有設定請保留）："
+    echo ""
+    echo '   "SessionStart": [{ "matcher": "startup|resume|clear",'
+    echo '     "hooks": [{ "type": "command", "command": ".claude/hooks/session-start-recall.sh" }] }],'
+    echo '   "PreToolUse": [{ "matcher": "Write|Edit",'
+    echo '     "hooks": [{ "type": "command", "command": ".claude/hooks/sdd-guard.sh" },'
+    echo '               { "type": "command", "command": ".claude/hooks/pre-write-guard.sh" }] }]'
+  fi
+fi
+
 echo ""
 echo "🚀 下一步：在 Claude Code 對話裡執行："
 echo "   /wiki-init"