refactor: backend→lotto 서비스 리네이밍 + lotto.db 레거시 테이블 스키마 제거

- backend/ → lotto/ 디렉토리 이동
- docker-compose: lotto-backend→lotto, lotto-frontend→frontend
- deploy scripts, nginx, agent-office config 네이밍 일괄 반영
- lotto/app/db.py에서 todos·blog_posts CREATE TABLE 제거 (personal로 이관 완료)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lotto/app/curator_helpers.py

@@ -0,0 +1,151 @@
+"""큐레이터용 후보 가공 — 여러 엔진 결과를 하나로 병합, 중복 제거, 피처 계산."""
+from typing import Dict, List, Any, Set
+from . import db
+from .recommender import recommend_numbers, recommend_with_heatmap
+from .analyzer import get_statistical_report
+from .strategy_evolver import generate_smart_recommendation
+
+
+LOW_HIGH_CUT = 22
+
+
+def compute_features(numbers: List[int], hot: Set[int], cold: Set[int]) -> Dict[str, Any]:
+    nums = sorted(numbers)
+    odd = sum(1 for n in nums if n % 2 == 1)
+    low = sum(1 for n in nums if n <= LOW_HIGH_CUT)
+    buckets = [0, 0, 0, 0, 0]
+    for n in nums:
+        if n <= 10: buckets[0] += 1
+        elif n <= 20: buckets[1] += 1
+        elif n <= 30: buckets[2] += 1
+        elif n <= 40: buckets[3] += 1
+        else: buckets[4] += 1
+    consecutive = any(nums[i+1] - nums[i] == 1 for i in range(len(nums) - 1))
+    return {
+        "odd_count": odd,
+        "even_count": 6 - odd,
+        "low_count": low,
+        "high_count": 6 - low,
+        "range_distribution": buckets,
+        "has_consecutive": consecutive,
+        "hot_number_count": len(set(nums) & hot),
+        "cold_number_count": len(set(nums) & cold),
+        "sum": sum(nums),
+    }
+
+
+def _key(numbers: List[int]) -> str:
+    return ",".join(str(n) for n in sorted(numbers))
+
+
+def collect_candidates(n: int, hot: Set[int], cold: Set[int]) -> List[Dict[str, Any]]:
+    """우선순위: simulation best_picks → meta → heatmap → statistics. 중복 제거 후 최대 n세트."""
+    seen: Dict[str, Dict[str, Any]] = {}
+    order: List[str] = []
+
+    def _add(numbers: List[int], source: str) -> None:
+        if not numbers:
+            return
+        k = _key(numbers)
+        if k in seen:
+            return
+        seen[k] = {"numbers": sorted(numbers), "source": source}
+        order.append(k)
+
+    # 1. simulation best_picks
+    try:
+        for row in db.get_best_picks(limit=n):
+            _add(row.get("numbers") or [], "simulation")
+    except Exception:
+        pass
+
+    # draws는 한 번만 로드
+    draws = []
+    try:
+        draws = db.get_all_draw_numbers()
+    except Exception:
+        pass
+
+    # 2. meta-strategy (smart)
+    try:
+        meta = generate_smart_recommendation(sets=n)
+        for s in meta.get("sets", []):
+            _add(s.get("numbers") or [], "meta")
+    except Exception:
+        pass
+
+    # 3. heatmap (n번 호출, 중복 회피)
+    if draws:
+        try:
+            for _ in range(n * 2):
+                if len(order) >= n * 2:
+                    break
+                r = recommend_with_heatmap(draws, [])
+                _add(r.get("numbers") or [], "heatmap")
+        except Exception:
+            pass
+
+    # 4. statistics
+    if draws:
+        try:
+            for _ in range(n * 2):
+                if len(order) >= n * 2:
+                    break
+                r = recommend_numbers(draws)
+                _add(r.get("numbers") or [], "statistics")
+        except Exception:
+            pass
+
+    out = []
+    for k in order[:n]:
+        item = seen[k]
+        item["features"] = compute_features(item["numbers"], hot, cold)
+        out.append(item)
+    return out
+
+
+def build_context(hot_limit: int = 10, cold_limit: int = 10) -> Dict[str, Any]:
+    """주간 맥락 패키지 — get_statistical_report가 이미 hot/cold를 제공."""
+    hot: List[int] = []
+    cold: List[int] = []
+    last_summary = ""
+
+    try:
+        draws = db.get_all_draw_numbers()
+    except Exception:
+        draws = []
+
+    if draws:
+        try:
+            report = get_statistical_report(draws)
+            hot = list(report.get("hot_numbers", []))[:hot_limit]
+            cold = list(report.get("cold_numbers", []))[:cold_limit]
+        except Exception:
+            pass
+
+    try:
+        latest = db.get_latest_draw()
+    except Exception:
+        latest = None
+
+    if latest:
+        nums = [latest.get(f"n{i}") for i in range(1, 7)]
+        nums = [n for n in nums if n is not None]
+        if nums:
+            odd = sum(1 for n in nums if n % 2 == 1)
+            low = sum(1 for n in nums if n <= LOW_HIGH_CUT)
+            last_summary = f"{latest.get('drw_no')}회: {', '.join(str(n) for n in nums)} (홀{odd}짝{6-odd}, 저{low}고{6-low})"
+
+    my_perf: List[Dict[str, Any]] = []
+    try:
+        from .purchase_manager import get_recent_performance
+        my_perf = get_recent_performance(limit=3)
+    except Exception:
+        my_perf = []
+
+    return {
+        "hot_numbers": hot,
+        "cold_numbers": cold,
+        "last_draw_summary": last_summary,
+        "my_recent_performance": my_perf,
+    }