feat: add remaining 5 endpoints (VWAP, relative rotation, fred-regional, primary dealer)

Complete all 67 planned endpoints:
- VWAP and Relative Rotation technical indicators
- FRED regional data (by state/county/MSA)
- Primary dealer positioning (Fed data)

economy_service.py

@@ -141,6 +141,35 @@ async def get_central_bank_holdings() -> list[dict[str, Any]]:
         return []
 
 
+async def get_fred_regional(
+    series_id: str, region: str | None = None,
+) -> list[dict[str, Any]]:
+    """Get geographically disaggregated FRED data (by state, county, MSA)."""
+    try:
+        kwargs: dict[str, Any] = {"symbol": series_id, "provider": "fred"}
+        if region:
+            kwargs["region_type"] = region
+        result = await asyncio.to_thread(
+            obb.economy.fred_regional, **kwargs
+        )
+        return to_list(result)
+    except Exception:
+        logger.warning("FRED regional failed for %s", series_id, exc_info=True)
+        return []
+
+
+async def get_primary_dealer_positioning() -> list[dict[str, Any]]:
+    """Get primary dealer net positions in treasuries, MBS, corporate bonds."""
+    try:
+        result = await asyncio.to_thread(
+            obb.economy.primary_dealer_positioning, provider="federal_reserve"
+        )
+        return to_list(result)
+    except Exception:
+        logger.warning("Primary dealer positioning failed", exc_info=True)
+        return []
+
+
 async def get_fomc_documents(year: int | None = None) -> list[dict[str, Any]]:
     """Get FOMC meeting documents (minutes, projections, etc.)."""
     try: