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)

technical_service.py

@@ -382,6 +382,47 @@ async def get_ad(symbol: str, days: int = 400) -> dict[str, Any]:
         return {"symbol": symbol, "error": "Failed to compute A/D Line"}
 
 
+async def get_vwap(symbol: str, days: int = 5) -> dict[str, Any]:
+    """Volume Weighted Average Price -- intraday fair value benchmark."""
+    hist = await fetch_historical(symbol, days)
+    if hist is None:
+        return {"symbol": symbol, "error": "No historical data"}
+    try:
+        result = await asyncio.to_thread(obb.technical.vwap, data=hist.results)
+        latest = _extract_latest(result)
+        return {
+            "symbol": symbol,
+            "vwap": latest.get("VWAP_D"),
+        }
+    except Exception:
+        logger.warning("VWAP failed for %s", symbol, exc_info=True)
+        return {"symbol": symbol, "error": "Failed to compute VWAP"}
+
+
+async def get_relative_rotation(
+    symbols: str, benchmark: str = "SPY", days: int = 365,
+) -> dict[str, Any]:
+    """Relative Rotation -- strength ratio and momentum vs benchmark."""
+    hist = await fetch_historical(symbols, days)
+    bench_hist = await fetch_historical(benchmark, days)
+    if hist is None or bench_hist is None:
+        return {"symbols": symbols, "benchmark": benchmark, "error": "No historical data"}
+    try:
+        result = await asyncio.to_thread(
+            obb.technical.relative_rotation,
+            data=hist.results, benchmark=bench_hist.results,
+        )
+        items = to_list(result)
+        return {
+            "symbols": symbols,
+            "benchmark": benchmark,
+            "data": items[-10:] if len(items) > 10 else items,
+        }
+    except Exception:
+        logger.warning("Relative rotation failed for %s", symbols, exc_info=True)
+        return {"symbols": symbols, "error": "Failed to compute relative rotation"}
+
+
 async def get_cones(symbol: str, days: int = 365) -> dict[str, Any]:
     """Volatility Cones -- realized volatility quantiles for options analysis."""
     hist = await fetch_historical(symbol, days)