feat(signal_v2-phase3a): config + state extensions for KIS data

- config.py: KIS_APP_KEY/SECRET/ACCOUNT/IS_VIRTUAL + V1_TOKEN_PATH env
- state.py: PollState extended with minute_bars (deque) and asking_price
- requirements.txt: websockets>=12

19 existing tests still pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

requirements.txt

@@ -6,3 +6,4 @@ python-dotenv>=1.0
 pytest>=8.0
 pytest-asyncio>=0.23
 respx>=0.21
+websockets>=12

signal_v2/config.py

@@ -5,7 +5,6 @@ from pathlib import Path
 
 from dotenv import load_dotenv
 
-# web-ai/.env 명시 로드 (signal_v2/config.py 의 parent.parent = web-ai/)
 load_dotenv(Path(__file__).parent.parent / ".env")
 
 
@@ -21,8 +20,20 @@ class Settings:
     db_path: Path = field(
         default_factory=lambda: Path(__file__).parent / "data" / "signal_v2.db"
     )
+    # Phase 3a additions
+    kis_app_key: str = field(default_factory=lambda: os.getenv("KIS_APP_KEY", "").strip())
+    kis_app_secret: str = field(default_factory=lambda: os.getenv("KIS_APP_SECRET", "").strip())
+    kis_account: str = field(default_factory=lambda: os.getenv("KIS_ACCOUNT", "").strip())
+    kis_is_virtual: bool = field(
+        default_factory=lambda: os.getenv("KIS_IS_VIRTUAL", "true").lower() == "true"
+    )
+    v1_token_path: Path = field(
+        default_factory=lambda: Path(
+            os.getenv("V1_TOKEN_PATH",
+                      str(Path(__file__).parent.parent / "signal_v1" / "data" / "kis_token.json"))
+        )
+    )
 
 
 def get_settings() -> Settings:
-    """매 호출 시 신선한 Settings (테스트 monkeypatch 호환)."""
     return Settings()

signal_v2/state.py

@@ -1,4 +1,5 @@
 """PollState — process-wide singleton."""
+from collections import deque
 from dataclasses import dataclass, field
 
 
@@ -7,9 +8,11 @@ class PollState:
     portfolio: dict | None = None
     news_sentiment: dict | None = None
     screener_preview: dict | None = None
+    # Phase 3a additions
+    minute_bars: dict[str, deque] = field(default_factory=dict)
+    asking_price: dict[str, dict] = field(default_factory=dict)
     last_updated: dict[str, str] = field(default_factory=dict)
     fetch_errors: dict[str, int] = field(default_factory=dict)
 
 
-# Process-wide singleton. Phase 3 imports: from signal_v2.state import state
 state = PollState()