Address Gemini round 4: register get_technicals, fix curr_date, clean up naming

HIGH: Add get_technicals to TOOLS_CATEGORIES (was unregistered)
HIGH: Use curr_date param in get_indicators for historical range calculation
HIGH: Remove misleading get_insider_transactions alias — keep separate:
  - get_insider_transactions: yfinance/AV (actual insider trades, Form 4)
  - get_sec_filings: Polaris (earnings filings, 8-K/10-Q/10-K)
MEDIUM: Simplify _extract_briefs helper

tradingagents/dataflows/interface.py

@@ -30,7 +30,7 @@ from .polaris import (
     get_balance_sheet as get_polaris_balance_sheet,
     get_cashflow as get_polaris_cashflow,
     get_income_statement as get_polaris_income_statement,
-    get_insider_transactions as get_polaris_insider_transactions,
+    get_sec_filings as get_polaris_sec_filings,
     get_news as get_polaris_news,
     get_global_news as get_polaris_global_news,
     get_sentiment_score as get_polaris_sentiment_score,
@@ -53,7 +53,8 @@ TOOLS_CATEGORIES = {
     "technical_indicators": {
         "description": "Technical analysis indicators",
         "tools": [
-            "get_indicators"
+            "get_indicators",
+            "get_technicals"
         ]
     },
     "fundamental_data": {
@@ -71,6 +72,7 @@ TOOLS_CATEGORIES = {
             "get_news",
             "get_global_news",
             "get_insider_transactions",
+            "get_sec_filings",
         ]
     },
     "sentiment_analysis": {
@@ -138,7 +140,9 @@ VENDOR_METHODS = {
     "get_insider_transactions": {
         "alpha_vantage": get_alpha_vantage_insider_transactions,
         "yfinance": get_yfinance_insider_transactions,
-        "polaris": get_polaris_insider_transactions,
+    },
+    "get_sec_filings": {
+        "polaris": get_polaris_sec_filings,
     },
     # sentiment_analysis (Polaris-exclusive)
     "get_sentiment_score": {

tradingagents/dataflows/polaris.py

@@ -102,11 +102,9 @@ def _days_to_range(days: int) -> str:
 
 def _extract_briefs(data) -> list:
     """Extract briefs list from API response (handles both dict and typed objects)."""
-    if hasattr(data, '__dict__') and not isinstance(data, dict):
-        data = data.__dict__ if hasattr(data, '__dict__') else {}
-    if isinstance(data, dict):
-        return data.get("briefs", [])
-    return getattr(data, 'briefs', [])
+    if not isinstance(data, dict):
+        data = vars(data) if hasattr(data, '__dict__') else {}
+    return data.get("briefs", [])
 
 
 # ---------------------------------------------------------------------------
@@ -170,7 +168,10 @@ def get_indicators(
     curr_date: Annotated[str, "Current trading date, YYYY-mm-dd"],
     look_back_days: Annotated[int, "how many days to look back"],
 ) -> str:
-    """Fetch technical indicators from Polaris (20 indicators + signal summary)."""
+    """Fetch technical indicators from Polaris (20 indicators + signal summary).
+
+    Uses curr_date and look_back_days to determine the data range.
+    """
     cache_key = f"indicators:{symbol}:{indicator}:{curr_date}:{look_back_days}"
     cached = _cached(cache_key)
     if cached:
@@ -178,6 +179,10 @@ def get_indicators(
 
     client = _get_client()
 
+    # Use curr_date to determine if we need historical vs current data
+    today = datetime.now().strftime("%Y-%m-%d")
+    is_historical = curr_date < today if curr_date else False
+
     # Map common indicator names to Polaris types
     indicator_map = {
         "close_50_sma": "sma", "close_20_sma": "sma", "close_200_sma": "sma",
@@ -192,7 +197,13 @@ def get_indicators(
     }
 
     polaris_type = indicator_map.get(indicator.lower(), indicator.lower())
-    range_param = _days_to_range(look_back_days)
+
+    # If historical, we need enough range to cover curr_date - look_back_days
+    if is_historical:
+        days_from_now = (datetime.strptime(today, "%Y-%m-%d") - datetime.strptime(curr_date, "%Y-%m-%d")).days
+        range_param = _days_to_range(days_from_now + look_back_days)
+    else:
+        range_param = _days_to_range(look_back_days)
 
     known_types = {
         "sma", "ema", "rsi", "macd", "bollinger", "atr",
@@ -538,9 +549,6 @@ def get_sec_filings(
     return result
 
 
-# Keep old name as alias for backward compatibility
-get_insider_transactions = get_sec_filings
-
 
 # ---------------------------------------------------------------------------
 # Polaris-Exclusive: Sentiment & Trading Signals