feat: OpenBB Investment Analysis API

REST API wrapping OpenBB SDK for stock data, sentiment analysis,
technical indicators, macro data, and rule-based portfolio analysis.

- Stock data via yfinance (quote, profile, metrics, financials, historical, news)
- News sentiment via Alpha Vantage (per-article, per-ticker scores)
- Analyst data via Finnhub (recommendations, insider trades, upgrades)
- Macro data via FRED (Fed rate, CPI, GDP, unemployment, treasury yields)
- Technical indicators via openbb-technical (RSI, MACD, SMA, EMA, Bollinger)
- Rule-based portfolio analysis engine (BUY_MORE/HOLD/SELL)
- Stock discovery (gainers, losers, active, undervalued, growth)
- 102 tests, all passing

routes_technical.py

@@ -0,0 +1,49 @@
+"""Routes for technical analysis indicators."""
+
+import functools
+import logging
+from collections.abc import Awaitable, Callable
+from typing import ParamSpec, TypeVar
+
+from fastapi import APIRouter, HTTPException, Path
+
+from models import SYMBOL_PATTERN, ApiResponse
+import technical_service
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter(prefix="/api/v1")
+
+P = ParamSpec("P")
+R = TypeVar("R")
+
+
+def _validate_symbol(symbol: str) -> str:
+    if not SYMBOL_PATTERN.match(symbol):
+        raise HTTPException(status_code=400, detail="Invalid symbol format")
+    return symbol.upper()
+
+
+def _safe(fn: Callable[P, Awaitable[R]]) -> Callable[P, Awaitable[R]]:
+    @functools.wraps(fn)
+    async def wrapper(*args: P.args, **kwargs: P.kwargs) -> R:
+        try:
+            return await fn(*args, **kwargs)
+        except HTTPException:
+            raise
+        except Exception:
+            logger.exception("Upstream data error")
+            raise HTTPException(
+                status_code=502,
+                detail="Data provider error. Check server logs.",
+            )
+    return wrapper  # type: ignore[return-value]
+
+
+@router.get("/stock/{symbol}/technical", response_model=ApiResponse)
+@_safe
+async def stock_technical(symbol: str = Path(..., min_length=1, max_length=20)):
+    """Get technical indicators: RSI, MACD, SMA, EMA, Bollinger Bands + signal interpretation."""
+    symbol = _validate_symbol(symbol)
+    data = await technical_service.get_technical_indicators(symbol)
+    return ApiResponse(data=data)