fix(nordagpt): avatar rendering + strategic queries get complex/high thinking

- Remove CSS filter on AI avatar — show NordaGPT robot icon as-is
- Strategic keywords (partner, inwestow, PEJ, serwerowni) → complex
- Complex queries get thinking=high for deeper analysis and less hallucination

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

smart_router.py

@@ -141,11 +141,16 @@ def route_query_fast(message: str, user_context: dict) -> Optional[dict]:
         logger.debug("fast_router: no confident match, deferring to AI router")
         return None
 
-    # Determine complexity by number of matched categories + message length
+    # Determine complexity by number of matched categories + message length + intent
     is_long = len(message) > 150
     multi_question = any(w in msg for w in ['jak ', 'jakie ', 'w jaki sposób', 'kto mógł'])
+    is_strategic = any(w in msg for w in [
+        'partner', 'współprac', 'inwestow', 'konsorcj', 'strategi',
+        'local content', 'projekt pej', 'elektrowni', 'serwerowni',
+        'porównaj', 'rekomend', 'analiz', 'doradzić', 'zaplanow'
+    ])
 
-    if len(matched_categories) >= 3 or (len(matched_categories) >= 2 and is_long):
+    if is_strategic or len(matched_categories) >= 3 or (len(matched_categories) >= 2 and is_long):
         complexity = 'complex'
     elif len(matched_categories) >= 2 or is_long or multi_question:
         complexity = 'medium'

templates/chat.html

@@ -429,14 +429,14 @@
     }
 
     .message.assistant .message-avatar {
-        background: linear-gradient(135deg, #1e3050 0%, #2E4872 100%);
-        color: white;
+        background: transparent;
+        padding: 0;
     }
 
     .message.assistant .message-avatar img {
-        width: 24px;
-        height: 24px;
-        filter: brightness(0) invert(1);
+        width: 36px;
+        height: 36px;
+        border-radius: 50%;
     }
 
     .message.user .message-avatar {