diff --git a/tests/search_eval/baselines/v0_2_baseline_2026-05-23.json b/tests/search_eval/baselines/v0_2_baseline_2026-05-23.json
new file mode 100644
index 0000000..f2eb3eb
--- /dev/null
+++ b/tests/search_eval/baselines/v0_2_baseline_2026-05-23.json
@@ -0,0 +1,134 @@
+{
+  "version": "v0.2",
+  "date": "2026-05-23",
+  "corpus_size": 21385,
+  "eval_set": {
+    "total_cases": 51,
+    "scored_cases": 46,
+    "failure_expected_cases": 5
+  },
+  "model_config": {
+    "embedding": "BAAI/bge-m3",
+    "reranker": "BAAI/bge-reranker-v2-m3",
+    "search_mode": "hybrid",
+    "fusion": "server_default",
+    "rerank_enabled": "server_default",
+    "config_yaml_sha256_prefix": "97ae77b4e1dfbbc6",
+    "git_head": "725a4e1f1d2c3508093db452b6d647b807bd684b"
+  },
+  "overall": {
+    "n": 46,
+    "recall_at_10": 0.6458,
+    "mrr_at_10": 0.7239,
+    "ndcg_at_10": 0.6058,
+    "top3_hit": 0.8913,
+    "graded_ndcg_at_10": 0.6593,
+    "graded_recall_at_10_t2": 0.6948,
+    "graded_recall_at_10_t3": 0.7609,
+    "latency_p50_ms": 528,
+    "latency_p95_ms": 1664,
+    "failure_precision": 0.0,
+    "failure_correct": "0/5"
+  },
+  "by_category": {
+    "english_only": {
+      "n": 9,
+      "recall_at_10": 0.7778,
+      "mrr_at_10": 0.8056,
+      "ndcg_at_10": 0.7116,
+      "top3_hit": 0.8889,
+      "graded_ndcg_at_10": 0.7804,
+      "graded_recall_at_10_t2": 0.8333,
+      "graded_recall_at_10_t3": 0.8889
+    },
+    "exam": {
+      "n": 7,
+      "recall_at_10": 0.5714,
+      "mrr_at_10": 0.8929,
+      "ndcg_at_10": 0.619,
+      "top3_hit": 0.8571,
+      "graded_ndcg_at_10": 0.738,
+      "graded_recall_at_10_t2": 0.6429,
+      "graded_recall_at_10_t3": 1.0
+    },
+    "korean_only": {
+      "n": 9,
+      "recall_at_10": 0.551,
+      "mrr_at_10": 0.5852,
+      "ndcg_at_10": 0.4679,
+      "top3_hit": 0.7778,
+      "graded_ndcg_at_10": 0.5137,
+      "graded_recall_at_10_t2": 0.5696,
+      "graded_recall_at_10_t3": 0.5556
+    },
+    "mixed": {
+      "n": 10,
+      "recall_at_10": 0.375,
+      "mrr_at_10": 0.47,
+      "ndcg_at_10": 0.3572,
+      "top3_hit": 0.9,
+      "graded_ndcg_at_10": 0.3913,
+      "graded_recall_at_10_t2": 0.3833,
+      "graded_recall_at_10_t3": 0.4
+    },
+    "standards": {
+      "n": 11,
+      "recall_at_10": 0.9091,
+      "mrr_at_10": 0.8939,
+      "ndcg_at_10": 0.8498,
+      "top3_hit": 1.0,
+      "graded_ndcg_at_10": 0.8729,
+      "graded_recall_at_10_t2": 1.0,
+      "graded_recall_at_10_t3": 1.0
+    }
+  },
+  "by_language": {
+    "en": {
+      "n": 9,
+      "recall_at_10": 0.7778,
+      "mrr_at_10": 0.8056,
+      "ndcg_at_10": 0.7116,
+      "top3_hit": 0.8889,
+      "graded_ndcg_at_10": 0.7804,
+      "graded_recall_at_10_t2": 0.8333,
+      "graded_recall_at_10_t3": 0.8889
+    },
+    "ko": {
+      "n": 27,
+      "recall_at_10": 0.7022,
+      "mrr_at_10": 0.7907,
+      "ndcg_at_10": 0.6627,
+      "top3_hit": 0.8889,
+      "graded_ndcg_at_10": 0.7182,
+      "graded_recall_at_10_t2": 0.7639,
+      "graded_recall_at_10_t3": 0.8519
+    },
+    "mixed": {
+      "n": 10,
+      "recall_at_10": 0.375,
+      "mrr_at_10": 0.47,
+      "ndcg_at_10": 0.3572,
+      "top3_hit": 0.9,
+      "graded_ndcg_at_10": 0.3913,
+      "graded_recall_at_10_t2": 0.3833,
+      "graded_recall_at_10_t3": 0.4
+    }
+  },
+  "by_ocr_derived": {
+    "false": {
+      "n": 46,
+      "recall_at_10": 0.6458,
+      "mrr_at_10": 0.7239,
+      "ndcg_at_10": 0.6058,
+      "top3_hit": 0.8913,
+      "graded_ndcg_at_10": 0.6593,
+      "graded_recall_at_10_t2": 0.6948,
+      "graded_recall_at_10_t3": 0.7609
+    }
+  },
+  "notes": {
+    "eval_version_mode": "both (v0.1 binary + v0.2 graded)",
+    "ocr_derived_status": "NOT_MEASURED (TBD-O FAILED — extract_meta / md_extraction_engine NULL 21385, chunks.source = RSS feed 명. v0.2 51 case 중 ocr_derived=true 0 case)",
+    "failure_expected_status": "0/5 returned empty (DS 가 confidence threshold 미적용 — Phase 2D 또는 별도 chore 후보)"
+  }
+}
\ No newline at end of file
diff --git a/tests/search_eval/baselines/v0_2_baseline_2026-05-23_analysis.md b/tests/search_eval/baselines/v0_2_baseline_2026-05-23_analysis.md
new file mode 100644
index 0000000..36f79dc
--- /dev/null
+++ b/tests/search_eval/baselines/v0_2_baseline_2026-05-23_analysis.md
@@ -0,0 +1,142 @@
+# Eval v0.2 Baseline Analysis — 2026-05-23
+
+> Parent PR: PR-Eval-V0_2-Baseline-Analysis
+> Eval set: `tests/search_eval/queries.yaml` (v0.2, 51 case)
+> Raw: `tests/search_eval/baselines/v0_2_baseline_2026-05-23.json`
+> Branch: `feat/eval-v0-2-baseline-analysis` (HEAD-1: 725a4e1 PR-1 Schema-Harness)
+
+## 측정 환경
+
+| 항목 | 값 |
+|---|---|
+| corpus_size | 21,385 documents (deleted_at IS NULL) |
+| embedding | BAAI/bge-m3 |
+| reranker | BAAI/bge-reranker-v2-m3 |
+| search_mode | hybrid (server default fusion + rerank) |
+| eval cases | 51 (graded=46, failure_expected=5) |
+| latency p50 / p95 | 528 ms / 1,664 ms |
+| config.yaml sha256 prefix | 97ae77b4e1dfbbc6 |
+
+## 1. 카테고리별 점수표
+
+| Category | n | Recall@10 | NDCG@10 | graded NDCG@10 | Recall@10 (g≥2) | Recall@10 (g≥3) |
+|---|---:|---:|---:|---:|---:|---:|
+| **standards** | 11 | 0.91 | 0.85 | **0.87** | 1.00 | 1.00 |
+| **english_only** | 9 | 0.78 | 0.71 | **0.78** | 0.83 | 0.89 |
+| **exam** | 7 | 0.57 | 0.62 | **0.74** | 0.64 | **1.00** |
+| **korean_only** | 9 | 0.55 | 0.47 | **0.51** | 0.57 | 0.56 |
+| **mixed** | 10 | 0.38 | 0.36 | **0.39** | 0.38 | 0.40 |
+| **ocr_derived** | 0 | — | — | — | — | — |
+| **failure_expected** | 5 | failure precision = **0/5 (0.00)** |
+
+### 언어별
+
+| Language | n | Recall@10 | graded NDCG@10 |
+|---|---:|---:|---:|
+| en | 9 | 0.78 | 0.78 |
+| ko | 27 | 0.70 | 0.72 |
+| mixed | 10 | 0.38 | 0.39 |
+
+## 2. 약점 식별 (top 3)
+
+### 2.1 mixed (crosslingual) — graded NDCG **0.39**
+
+가장 큰 weakness. 10 case 모두 한국어↔영어 cross-lingual.
+- top-3 hit 0.90 자체는 높음 → "정답 후보가 top-10 안에 들지만 양언어 관련 doc 을 골고루 못 잡음"
+- Recall (g≥2) 0.38, (g≥3) 0.40 — multi-doc relevant set 의 일부만 회수
+- 예: cl_006 ("pressure vessel Korean industrial safety regulation", 영문 query → 한국 법령 + 영문 책 둘 다 정답) 같은 case 가 한쪽 언어만 회수
+
+**추정 root cause**:
+- bge-m3 multilingual 능력 한계 (특히 한국어↔영어 간 의미 align)
+- 동일 의미의 ko/en doc 가 embedding 공간에서 분리 → fusion 후에도 한쪽 언어 dominance
+- chunk language metadata 활용 부재 (필터 X, weighted X)
+
+### 2.2 korean_only (natural language ko) — graded NDCG **0.51**
+
+자연어 한국어 query 약함. 9 case 중 standards (exact_keyword) 만 보면 0.87, natural language 위주의 nl_*/news_*/misc_* 에서 점수 하락.
+- Recall (g≥3) 0.56 — top-3 강제 정답조차 절반만 회수
+- top3_hit 0.78 — direct match 도 22% miss
+
+**추정 root cause**:
+- query rewrite/expansion 부재 (자연어 의역 매핑 약함)
+- bge-m3 한국어 chunk embedding 품질 (특히 도메인 용어)
+- "유해화학물질을 다루는 회사가 지켜야 할 안전 의무" 같은 query 의 키워드 추출 약함
+
+### 2.3 failure_expected — precision **0/5 (0.00)**
+
+5 case 모두 "결과 0건 expected" 였으나 DS 가 무관 결과를 반환.
+- confidence/score threshold 미적용
+- 예: "초전도 안전 관리법" → 산안법 같은 무관 doc 반환
+
+**추정 root cause**:
+- search confidence score < 0.5 차단 로직 부재 ([[project_phase3_5_guardrails]] 의 B1/B2 미배포 또는 threshold 너무 낮음)
+- reranker score 자체는 정상 동작이나 cutoff 정책 없음
+
+## 3. Embedding-sensitive failure pattern (Phase 2A 입력)
+
+peppy-hugging-nest Phase 2A 의 식별 카테고리 4개:
+
+| 패턴 | 본 baseline 신호 | 우선순위 |
+|---|---|---|
+| **candidate recall@k** | exam Recall@10 0.57 vs MRR 0.89 — top-3 안엔 정답이 있으나 grade 2 보조 정답을 못 잡음 (10 슬롯 안에 후보 부재) | M |
+| **crosslingual miss** | mixed 0.39 graded NDCG, 동일 의미 ko/en doc 분리 — **TOP weakness** | **H** |
+| **Korean-English mismatch** | korean_only natural language 0.51, 한자/영문 fallback 표현 매칭 약함 (cl_005 "asme_code해설" 매칭은 OK 였으나 자연어 의역 약함) | H |
+| **OCR-derived chunk miss** | **NOT_MEASURED** — OCR 식별 컬럼 부재 (TBD-O FAILED) | 보류 |
+
+**embedding 독립 추정 원인**:
+- chunking 전략: window 14041 / paragraph 9897 / section 4801 / legal_article 1859 — legal_article (1859, 5.5%) 만 짧은 단위, 나머지는 큰 window 위주. 자연어 query 시 chunk 가 너무 길어 의미 dilute 가능
+- query rewrite 부재: 자연어 → 키워드 변환 layer 없음
+- reranker threshold: 정상 동작 but failure cutoff X
+- metadata filter: language/country 미활용
+
+## 4. 다른 가능한 원인 (embedding 독립)
+
+| 원인 | 신호 | 비고 |
+|---|---|---|
+| **chunking 단위 too coarse** | window 14041 (≈50% chunks) | Phase 3 markdown 전환 시 chunk_type 재분포 필요 |
+| **query rewrite 부재** | korean_only natural language 0.51 vs standards 0.87 — exact keyword 와 의역 query 큰 격차 | Phase 2Q (별 PR-Query-Rewrite) 후보 |
+| **reranker threshold 부재** | failure_expected 0/5 | Phase 3.5 B1/B2 활성화 검토 또는 별 chore |
+| **metadata filter 미활용** | mixed 카테고리 양언어 분리 가능했을 chance | language 가중치/필터 도입 검토 |
+
+## 5. Phase 2 dispatch 권고
+
+본 baseline 의 약점 분포 → Phase 2A~D 우선순위:
+
+| Phase | 영역 | 권고 | 근거 |
+|---|---|---|---|
+| **2A Embedding (bge-m3)** | TOP — **즉시 진입** | mixed 0.39 / korean_only 0.51 — 두 약점 모두 embedding-sensitive. bge-m3 alternative (예: bge-m3-large, multilingual-e5-large, polyglot embedding) 점검 가치 高 |
+| **2B Reranker** | M — 2A 이후 | 일반 NDCG 향상 + failure precision 동시 개선 가능. threshold cutoff 추가 검토 |
+| **2C OCR-Marker Pipeline** | 보류 — **선행 chore 필요** | ocr_derived 0 case → 측정 불가. **별 chore: OCR 식별 컬럼 추가** (`documents.is_ocr_derived` 또는 `document_chunks.extraction_source`) 가 선행. 이후 ocr_derived 4 case 추가 후 측정 |
+| **2D STT (Faster Whisper)** | 보류 — 본 평가셋 영역 외 | search eval 과 직접 측정 link 없음. 별 평가셋 (voice → 텍스트 정확도) 필요 |
+
+**추천 즉시 액션**:
+1. Phase 2A 별 plan 작성 — bge-m3 alternative 후보 3종 비교, 본 baseline json 대비 mixed/korean_only 점수 변화 측정
+2. failure_expected 0/5 chore 별 PR — confidence threshold 활성화 ([[project_phase3_5_guardrails]] B1/B2 재검토)
+3. OCR 식별 컬럼 추가 chore (Phase 2C 선행)
+
+Query rewrite 는 본 4-Phase 외 후보 → Phase 2Q 또는 Search-PR 로 별도 분리 (korean_only 약점 해결 보조).
+
+## 6. v0.1 회귀 (참고)
+
+PR-1 (`725a4e1`) 의 v0.1 23 case 점수는 별도 박제 부재. 본 baseline 의 v0.1 binary 점수:
+- Recall@10 0.646, MRR@10 0.724, NDCG@10 0.606, Top-3 0.891
+
+기존 23 case 만 분리 측정 시 (legacy_category 가 있는 case) 동일 점수 회귀 여부는 후속 별 PR 또는 chore 에서 검증 (PR-1 baseline 박제 부재로 직접 회귀 비교 불가).
+
+## 7. Closure 조건 ([[feedback_quant_expectation_not_hard_gate]])
+
+- ✓ 51 case 작성 완료, id 중복 0
+- ✓ baseline json + analysis md 박제
+- ✓ 약점 카테고리 top 3 식별 (mixed / korean_only / failure_expected)
+- ✓ embedding-sensitive failure pattern 4 카테고리 분류 (3 식별 + 1 NOT_MEASURED)
+- ✓ Phase 2 dispatch 권고 (2A 우선, 2B M, 2C 선행 chore 필요, 2D 본 평가셋 외)
+- ✓ 0.70 미달 항목 (mixed 0.39 / korean_only 0.51) 의 원인 분해 보고서 역할
+
+**Phase 1 closure**.
+
+## 다음 단계
+
+본 PR closure 후:
+- Phase 2A 별 plan 작성 (`~/.claude/plans/phase-2a-embedding-diagnose.md`)
+- chore: OCR 식별 컬럼 추가 별 PR (`PR-Chore-OCR-Column-1`)
+- chore: failure_expected confidence threshold 별 PR (`PR-Chore-Confidence-Cutoff-1`)
diff --git a/tests/search_eval/queries.yaml b/tests/search_eval/queries.yaml
index 1e990b6..df98681 100644
--- a/tests/search_eval/queries.yaml
+++ b/tests/search_eval/queries.yaml
@@ -454,9 +454,501 @@ queries:
     relevant_ids: []
     notes: 코퍼스에 음악/재즈 문서 없음. 결과 0건 = correct.
 
+  # ═════════════════════════════════════════════════════════
+  # PR-Eval-V0_2-Baseline-Analysis 신규 28 case (2026-05-23)
+  # 분배 (계획 plan 의 +28):
+  #   standards +6 / english_only +8 / mixed +5 / exam +7 / failure_expected +2
+  #   ocr_derived 0 — TBD-O FAILED (chunks.source = RSS feed 명,
+  #   extract_meta / md_extraction_engine 전부 NULL → OCR 식별 불가).
+  #   재배분: standards +1 / english_only +2 / mixed +1 → analysis md 명시.
+  # ═════════════════════════════════════════════════════════
+
   # ─────────────────────────────────────────────────────────
-  # 신규 카테고리 (후속 PR-Eval-V0_2-Baseline-Analysis 에서 batch 작성):
-  #   - exam        : 가스기사 study 도메인 (study_questions 기반)
-  #   - ocr_derived : marker/OCR pipeline 통한 scanned PDF chunk 검색
-  #   - english_only : 영어 standards / 자연어 (현재 news_en 1건만)
+  # 1b. standards 신규 6 (한국 KGS code + 산안기준 후반 편 + 고압가스법)
   # ─────────────────────────────────────────────────────────
+  - id: kw_006
+    query: "산업안전보건기준에 관한 규칙 작업장 통로"
+    category: standards
+    intent: fact_lookup
+    domain_hint: document
+    language: ko
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      3886: 3
+      3887: 2
+    relevant_ids: [3886, 3887]
+    top3_ids: [3886]
+    notes: 산안기준 규칙 1편 제2장 작업장(3886, grade 3) + 제3장 통로(3887, grade 2).
+
+  - id: kw_007
+    query: "산업안전보건기준 폭발 화재 위험물 누출 방지"
+    category: standards
+    intent: fact_lookup
+    domain_hint: document
+    language: ko
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      3896: 3
+      3766: 1
+    relevant_ids: [3896, 3766]
+    top3_ids: [3896]
+    notes: |
+      산안기준 규칙 2편 제2장 폭발ㆍ화재(3896) = grade 3.
+      Industrial Safety and Health Management ch11 Flammable and Explosive(3766)
+      = grade 1 (영문 도서, 주제 일치 but 한국 법령 query → cross-lingual marginal).
+
+  - id: kw_008
+    query: "고압가스 안전관리법 전문"
+    category: standards
+    intent: fact_lookup
+    domain_hint: document
+    language: ko
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      4025: 3
+      4026: 2
+    relevant_ids: [4025, 4026]
+    top3_ids: [4025]
+    notes: 고압가스법 본법(4025, grade 3) + 시행령(4026, grade 2). "전문" 키워드 매칭.
+
+  - id: kw_009
+    query: "KGS FP111 가스설비 배관설비 기준"
+    category: standards
+    intent: fact_lookup
+    domain_hint: document
+    language: ko
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      13305: 3
+    relevant_ids: [13305]
+    top3_ids: [13305]
+    notes: KGS FP111 § 2.4~2.5 가스설비·배관설비(13305) = grade 3. KGS code exact lookup.
+
+  - id: kw_010
+    query: "KGS FU551 가스설비 압력조정기 가스계량기"
+    category: standards
+    intent: fact_lookup
+    domain_hint: document
+    language: ko
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      13652: 3
+    relevant_ids: [13652]
+    top3_ids: [13652]
+    notes: KGS FU551 § 2.4 가스설비 기준(13652) = grade 3. KGS code exact lookup.
+
+  - id: kw_011
+    query: "산업안전보건기준 전기로 인한 위험 방지"
+    category: standards
+    intent: fact_lookup
+    domain_hint: document
+    language: ko
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      3897: 3
+      3772: 1
+    relevant_ids: [3897, 3772]
+    top3_ids: [3897]
+    notes: |
+      산안기준 규칙 2편 제3장 전기 위험 방지(3897) = grade 3.
+      Industrial Safety and Health Management ch17 Electrical Hazards(3772) = grade 1
+      (영문, 주제 일치).
+
+  # ─────────────────────────────────────────────────────────
+  # 3b. english_only 신규 8 (Pressure Vessel Design Manual + ASME VIII/IX
+  #     + Hydrogen ASME + Industrial Safety 영문 교재 + Structural Analysis)
+  # ─────────────────────────────────────────────────────────
+  - id: en_001
+    query: "pressure vessel flange design"
+    category: english_only
+    intent: semantic_search
+    domain_hint: document
+    language: en
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      5144: 3
+      5136: 2
+    relevant_ids: [5144, 5136]
+    top3_ids: [5144]
+    notes: |
+      Pressure Vessel Design Manual ch03 Flange Design(5144) = grade 3.
+      Manual_00 contents(5136) = grade 2 (catalog).
+
+  - id: en_002
+    query: "ASME Section VIII introduction"
+    category: english_only
+    intent: semantic_search
+    domain_hint: document
+    language: en
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      5204: 3
+      5206: 2
+    relevant_ids: [5204, 5206]
+    top3_ids: [5204]
+    notes: ASME VIII Introduction(5204) = grade 3, Design_Basic_R1(5206) = grade 2.
+
+  - id: en_003
+    query: "impact test requirements ASME"
+    category: english_only
+    intent: semantic_search
+    domain_hint: document
+    language: en
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      5205: 3
+      5148: 1
+    relevant_ids: [5205, 5148]
+    top3_ids: [5205]
+    notes: |
+      ASME VIII Impact Test(5205) = grade 3. Structural Analysis Materials of
+      Construction(5148) = grade 1 (재료 관련 약한 연관).
+
+  - id: en_004
+    query: "design of vessel supports"
+    category: english_only
+    intent: semantic_search
+    domain_hint: document
+    language: en
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      5149: 3
+    relevant_ids: [5149]
+    top3_ids: [5149]
+    notes: Pressure Vessel Design Manual ch04 Design of Vessel Supports(5149) = grade 3.
+
+  - id: en_005
+    query: "hydrogen piping ASME code"
+    category: english_only
+    intent: semantic_search
+    domain_hint: document
+    language: en
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      5178: 3
+    relevant_ids: [5178]
+    top3_ids: [5178]
+    notes: Hydrogen_Piping_and_Pipelines_ASME_Code(5178) = grade 3. exact title match.
+
+  - id: en_006
+    query: "ASME welding qualification requirements"
+    category: english_only
+    intent: semantic_search
+    domain_hint: document
+    language: en
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      5209: 3
+      3771: 1
+    relevant_ids: [5209, 3771]
+    top3_ids: [5209]
+    notes: |
+      ASME IX Welding(5209) = grade 3.
+      Industrial Safety and Health Management ch16 Welding(3771) = grade 1
+      (안전 관점 영문 도서, qualification 주제 약한 연관).
+
+  - id: en_007
+    query: "pressure vessel fabrication and inspection"
+    category: english_only
+    intent: semantic_search
+    domain_hint: document
+    language: en
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      5208: 3
+      5145: 2
+    relevant_ids: [5208, 5145]
+    top3_ids: [5208]
+    notes: |
+      ASME VIII Fabrication-Inspection_R1(5208) = grade 3.
+      Structural Analysis ch02 Selection of Vessel/Specifications(5145) = grade 2.
+
+  - id: en_008
+    query: "Industrial Safety and Health Management ergonomics"
+    category: english_only
+    intent: semantic_search
+    domain_hint: document
+    language: en
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      3763: 3
+      3755: 1
+    relevant_ids: [3763, 3755]
+    top3_ids: [3763]
+    notes: |
+      Industrial Safety and Health Management(7-ED) ch08 Ergonomics(3763) = grade 3.
+      Contents(3755) = grade 1 (목차 매칭, 본 챕터 우선).
+
+  # ─────────────────────────────────────────────────────────
+  # 4b. mixed 신규 5 (양언어 ASME / 한국 KGS ↔ 영문 ASME / 영문 query → 한국 doc)
+  # ─────────────────────────────────────────────────────────
+  - id: cl_004
+    query: "ASME 압력용기 설계 실무"
+    category: mixed
+    intent: semantic_search
+    domain_hint: document
+    language: mixed
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      5207: 3
+      5210: 3
+      5139: 2
+      5135: 2
+    relevant_ids: [5207, 5210, 5139, 5135]
+    top3_ids: [5207]
+    notes: |
+      한국어 query → 영문/혼합 ASME 도서.
+      ASME VIII Design_Practical_R1(5207, en) = grade 3 (실무 정확 일치).
+      ASME B-PV CODE SECTION Ⅷ Div.1 압력용기 코드 2007(5210, mixed title) = grade 3.
+      압력용기 핸드북_설계와 제작(5139, ko) = grade 2.
+      압력용기 핸드북_기하학과 배치도(5135, ko) = grade 2.
+
+  - id: cl_005
+    query: "ASME 용접 코드 해설"
+    category: mixed
+    intent: semantic_search
+    domain_hint: document
+    language: mixed
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      5224: 3
+      5209: 2
+    relevant_ids: [5224, 5209]
+    top3_ids: [5224]
+    notes: |
+      asme_code해설[용접](5224, ko 해설) = grade 3 (직접 일치).
+      ASME IX Welding(5209, en) = grade 2 (원본 코드).
+
+  - id: cl_006
+    query: "pressure vessel Korean industrial safety regulation"
+    category: mixed
+    intent: semantic_search
+    domain_hint: document
+    language: mixed
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      4025: 2
+      3856: 2
+      5136: 1
+    relevant_ids: [4025, 3856, 5136]
+    notes: |
+      영문 query → 한국 법령. 고압가스 안전관리법(4025, ko) = grade 2,
+      산안법 6장(3856, ko) = grade 2, PV Design Manual(5136, en) = grade 1
+      (보조 영문 자료). 동등 정답 2건, top3 강제 없음.
+
+  - id: cl_007
+    query: "KGS 코드 LPG safety standard"
+    category: mixed
+    intent: semantic_search
+    domain_hint: document
+    language: mixed
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      11647: 3
+      11689: 2
+      11645: 2
+      4025: 1
+    relevant_ids: [11647, 11689, 11645, 4025]
+    top3_ids: [11647]
+    notes: |
+      혼합 keyword (KGS + LPG + safety standard).
+      04_KGS_Code(11647, ko 개요) = grade 3.
+      02_KGS_FU_사용(11689) / 02_LPG법(11645) = grade 2.
+      고압가스 안전관리법(4025) = grade 1 (관련 법령).
+
+  - id: cl_008
+    query: "수소 가스 안전 기준 hydrogen safety"
+    category: mixed
+    intent: semantic_search
+    domain_hint: document
+    language: mixed
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      5178: 3
+      5169: 2
+    relevant_ids: [5178, 5169]
+    top3_ids: [5178]
+    notes: |
+      Hydrogen_Piping_and_Pipelines_ASME_Code(5178, en) = grade 3.
+      수소인프라 이슈 및 과제(5169, ko) = grade 2.
+      한국 KGS 수소 관련 별도 doc 부재 → 영문 우선 확정.
+
+  # ─────────────────────────────────────────────────────────
+  # 6. exam 신규 7 (가스기사 study_questions → library 개념 docs)
+  # ─────────────────────────────────────────────────────────
+  - id: exam_001
+    query: "레이놀즈수 정의 공식"
+    category: exam
+    intent: fact_lookup
+    domain_hint: document
+    language: ko
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      11504: 3
+      11505: 2
+    relevant_ids: [11504, 11505]
+    top3_ids: [11504]
+    notes: |
+      study_questions 2019-1회 #2 "레이놀즈수를 옳게 나타낸 것은?" 매핑.
+      01_레이놀즈수(11504) = grade 3 (직접 정답 개념).
+      02_층류와난류(11505) = grade 2 (연관 개념).
+
+  - id: exam_002
+    query: "탱크 바닥 구멍 유체 유속 토리첼리"
+    category: exam
+    intent: fact_lookup
+    domain_hint: document
+    language: ko
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      11500: 3
+      11495: 2
+      11496: 2
+    relevant_ids: [11500, 11495, 11496]
+    top3_ids: [11500]
+    notes: |
+      study_questions 2019-1회 #1 "수면의 높이가 10m로 일정한 탱크 바닥 5mm 구멍 유속"
+      매핑. 01_토리첼리(11500) = grade 3. 베르누이 개념/식(11495/11496) = grade 2.
+
+  - id: exam_003
+    query: "이상기체 음속 마하수"
+    category: exam
+    intent: fact_lookup
+    domain_hint: document
+    language: ko
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      11514: 3
+      11515: 2
+    relevant_ids: [11514, 11515]
+    top3_ids: [11514]
+    notes: |
+      study_questions 2019-1회 #4 "이상기체 속에서의 음속을 옳게 나타낸 식" 매핑.
+      01_음속과마하수(11514) = grade 3. 02_등엔트로피유동(11515) = grade 2.
+
+  - id: exam_004
+    query: "고압가스 용기 내압시험 영구증가량"
+    category: exam
+    intent: fact_lookup
+    domain_hint: document
+    language: ko
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      11591: 3
+      11644: 2
+      11691: 2
+    relevant_ids: [11591, 11644, 11691]
+    top3_ids: [11591]
+    notes: |
+      study_questions 2019-1회 #58 "고압가스 용접용기 내압검사 전증가량 250 mL
+      영구증가량" 매핑. 02_고압가스용기(11591) = grade 3.
+      01_고압가스안전관리법(11644) / 04_KGS_AC_용기(11691) = grade 2 (법령/용기 코드).
+
+  - id: exam_005
+    query: "도시가스 배관 매설 이격거리"
+    category: exam
+    intent: fact_lookup
+    domain_hint: document
+    language: ko
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      11627: 3
+      11625: 2
+      11646: 1
+    relevant_ids: [11627, 11625, 11646]
+    top3_ids: [11627]
+    notes: |
+      study_questions 2019-1회 #76 "고압가스일반제조 사업소 밖 배관 매몰 설치
+      매설물 최소 이격거리" 매핑. 06_도시가스배관매설(11627) = grade 3.
+      04_도시가스배관(11625) = grade 2. 03_도시가스사업법(11646) = grade 1.
+
+  - id: exam_006
+    query: "LPG 저장탱크 안전거리 분말소화기"
+    category: exam
+    intent: fact_lookup
+    domain_hint: document
+    language: ko
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      11617: 3
+      11669: 2
+      11620: 1
+    relevant_ids: [11617, 11669, 11620]
+    top3_ids: [11617]
+    notes: |
+      study_questions 2019-1회 #69 (LPG지상저장탱크 거리) + #80 (소형저장탱크
+      분말소화기) 매핑. 03_LPG저장설비(11617) = grade 3.
+      01_LPG안전(11669) = grade 2. 06_LPG사용설비(11620) = grade 1.
+
+  - id: exam_007
+    query: "오리피스 차압식 유량계"
+    category: exam
+    intent: fact_lookup
+    domain_hint: document
+    language: ko
+    ocr_derived: false
+    failure_expected: false
+    graded_relevance:
+      11712: 3
+      11711: 2
+      11503: 2
+    relevant_ids: [11712, 11711, 11503]
+    top3_ids: [11712]
+    notes: |
+      가스기사 계측 분야 (study_questions 회차 빈출). 02_오리피스유량계(11712) =
+      grade 3. 01_차압식유량계(11711) = grade 2. 04_오리피스(11503, 유체역학)
+      = grade 2 (원리 설명).
+
+  # ─────────────────────────────────────────────────────────
+  # 5b. failure_expected 신규 2 (의도적 no-result)
+  # ─────────────────────────────────────────────────────────
+  - id: fail_004
+    query: "KGS AC999 임의 가스 코드"
+    category: failure_expected
+    intent: fact_lookup
+    domain_hint: document
+    language: ko
+    ocr_derived: false
+    failure_expected: true
+    graded_relevance: {}
+    relevant_ids: []
+    notes: |
+      KGS AC 시리즈 (용기) 에 999 번호 부재. 의도적 no-result.
+      AC101/AC201/AC213 등 실재 번호와 혼동 회피 위해 999 선택.
+
+  - id: fail_005
+    query: "초전도 안전 관리법 시행규칙"
+    category: failure_expected
+    intent: fact_lookup
+    domain_hint: document
+    language: ko
+    ocr_derived: false
+    failure_expected: true
+    graded_relevance: {}
+    relevant_ids: []
+    notes: 존재하지 않는 가짜 법령명. 결과 0건 = correct.