Initial commit: A-Share Data Platform v0.1.0

Parquet + DuckDB storage with REST/WebSocket APIs for Chinese A-share
market data. Supports 9 K-line frequencies with dual backend
(East Money / Sina) and auto-fallback.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/ashare_dp/api/deps.py

@@ -0,0 +1,9 @@
+"""FastAPI dependency injection."""
+
+from ashare_dp.storage.database import get_db
+from ashare_dp.storage.repository import KLineRepository
+
+
+def get_repo() -> KLineRepository:
+    """Get the K-line repository instance."""
+    return KLineRepository()