fix(bat-052): CHG-20260626-02 보정 — buy_fee_only_assets 제거 + NFR-2 엄격화

portfolio-hub WAC가 매수 fee를 cost basis에 편입함에 따라(REQ-110 change-req)
이중계상을 방지하기 위해 buy_fee_only_assets 관련 로직을 전면 제거하고,
일중 닫힌 거래 AC-2 단언을 엄격 동치(realized_pnl_wac == realized_pnl)로 강화.

변경:
- OperatorReport.buy_fee_only_assets 필드 제거
- apply_wac_to_report buy_fee_only_assets 인자 제거
- buy_fee_by_asset 헬퍼 함수 제거
- render_text 매수전용 수수료 섹션 제거
- render_json buy_fee_only_assets 필드 제거 (WAC 필드 4개→3개)
- cli.py: buy_fee_by_asset import/사용 제거, 미사용 'from datetime import date, timedelta' 제거
- test_wac_equals_net_when_same_day_buy_sell: WAC 957.0, 엄격 동치 단언
- test_buy_only_assets_has_fee → test_buy_only_asset_no_fee_line (fee 라인 없음)
- test_render_json_has_all_four_wac_fields → test_render_json_has_three_wac_fields
- 동일 CLI 통합 테스트 보정

결과: 717 passed, 47 skipped

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VHtM5Ws1HKCKQ4JGi6GRb5

trex_core/application/operator_report.py

@@ -53,7 +53,6 @@ class OperatorReport:
     # REQ-110 WAC 실현손익 (portfolio-hub 통합)
     realized_pnl_wac: float = 0.0
     realized_pnl_wac_by_asset: dict[str, float] = field(default_factory=dict)
-    buy_fee_only_assets: dict[str, float] = field(default_factory=dict)
     data_completeness_warning: bool = False
     # REQ-111 degrade flag
     wac_unavailable: bool = False
@@ -104,34 +103,19 @@ def apply_wac_to_report(
     *,
     wac_total: float,
     wac_by_asset: dict[str, float],
-    buy_fee_only_assets: dict[str, float],
     data_completeness_warning: bool,
 ) -> None:
     """REQ-110: WAC 실현손익을 OperatorReport에 in-place로 적용한다.
 
     순수 도메인 계층에서는 이 헬퍼가 아닌 build_report를 사용하고,
     CLI(_cmd_report)에서 portfolio-hub 응답을 받아 이 함수로 주입한다.
+    CHG-20260626-02: 매수 fee가 cost basis에 편입되어 buy_fee_only_assets 제거됨.
     """
     rep.realized_pnl_wac = wac_total
     rep.realized_pnl_wac_by_asset = dict(wac_by_asset)
-    rep.buy_fee_only_assets = dict(buy_fee_only_assets)
     rep.data_completeness_warning = data_completeness_warning
 
 
-def buy_fee_by_asset(trades: list[TradeRow], *, exclude_symbols: set[str] | None = None) -> dict[str, float]:
-    """OQ-3: 당일 매수 거래 fee 합산, 자산별 (매도 없는 자산 대상).
-
-    exclude_symbols: 매도 실현손익이 이미 WAC에 반영된 자산 집합.
-    """
-    fee_map: dict[str, float] = {}
-    for t in trades:
-        if t.side == "buy":
-            fee_map[t.asset_id] = fee_map.get(t.asset_id, 0.0) + t.fee
-    if exclude_symbols:
-        return {k: v for k, v in fee_map.items() if k not in exclude_symbols}
-    return fee_map
-
-
 def render_text(rep: OperatorReport) -> str:
     """사람용 표 요약."""
     lines: list[str] = []
@@ -155,10 +139,6 @@ def render_text(rep: OperatorReport) -> str:
             lines.append(f"  {asset}: {pnl:,.0f}")
         if rep.data_completeness_warning:
             lines.append("  [!] 이력 불완전 경고: cost basis 산출이 부정확할 수 있습니다.")
-        if rep.buy_fee_only_assets:
-            lines.append("=== 매수 전용 자산 수수료 ===")
-            for asset, fee in sorted(rep.buy_fee_only_assets.items()):
-                lines.append(f"  {asset}: -{fee:,.0f}")
     return "\n".join(lines)
 
 
@@ -177,10 +157,9 @@ def render_json(rep: OperatorReport) -> dict:
         "fills_count": rep.fills_count,
         "realized_pnl": rep.realized_pnl,
         "realized_pnl_by_asset": rep.realized_pnl_by_asset,
-        # REQ-110 신규 WAC 필드
+        # REQ-110 신규 WAC 필드 (CHG-20260626-02: buy_fee_only_assets 제거)
         "realized_pnl_wac": None if rep.wac_unavailable else rep.realized_pnl_wac,
         "realized_pnl_wac_by_asset": None if rep.wac_unavailable else rep.realized_pnl_wac_by_asset,
-        "buy_fee_only_assets": None if rep.wac_unavailable else rep.buy_fee_only_assets,
         "data_completeness_warning": None if rep.wac_unavailable else rep.data_completeness_warning,
     }
     # REQ-111: degrade 표기

trex_core/runtime/cli.py

@@ -668,7 +668,6 @@ def _cmd_verify(args, cfg) -> int:
 def _cmd_report(args, cfg) -> int:
     """REQ-088/110/111: holdings / today's fills / WAC realized PnL / pending — direct-DB."""
     import psycopg
-    from datetime import date, timedelta
 
     from trex_core.application.operator_report import (
         Holding,
@@ -676,7 +675,6 @@ def _cmd_report(args, cfg) -> int:
         TradeRow,
         apply_wac_to_report,
         build_report,
-        buy_fee_by_asset,
         kst_day_bounds_utc,
         render_json,
         render_text,
@@ -749,15 +747,10 @@ def _cmd_report(args, cfg) -> int:
                     key = item.symbol or pid
                     wac_by_asset_accum[key] = wac_by_asset_accum.get(key, 0.0) + item.realized_pnl
 
-            # OQ-3: buy_fee_only_assets = 당일 매수 거래 fee 합산 (매도 없는 자산 대상)
-            sell_assets = {t.asset_id for t in trades if t.side == "sell"}
-            buy_fee_only = buy_fee_by_asset(trades, exclude_symbols=sell_assets)
-
             apply_wac_to_report(
                 rep,
                 wac_total=wac_total,
                 wac_by_asset=wac_by_asset_accum,
-                buy_fee_only_assets=buy_fee_only,
                 data_completeness_warning=any_warning,
             )