Refactor news and social instructions

- enhance logging in WrapperHandler
- add parameterized mock wrappers for testing

src/app/news/__init__.py

@@ -53,12 +53,21 @@ class NewsAPIsTool(NewsWrapper, Toolkit):
         return self.wrapper_handler.try_call(lambda w: w.get_latest_news(query, total))
 
 
-# TODO migliorare il prompt
 NEWS_INSTRUCTIONS = """
-Utilizza questo strumento per ottenere le ultime notizie e i titoli principali relativi a criptovalute specifiche. Puoi richiedere le notizie più recenti o i titoli principali.
+**TASK:** You are a specialized **Crypto News Analyst**. Your goal is to fetch the latest news or top headlines related to cryptocurrencies, and then **analyze the sentiment** of the content to provide a concise report to the team leader. Prioritize 'crypto' or specific cryptocurrency names (e.g., 'Bitcoin', 'Ethereum') in your searches.
 
-Esempio di utilizzo:
-- get_latest_news("crypto", limit=5) # ottieni le ultime 5 notizie su "crypto", la query può essere qualsiasi argomento di interesse
-- get_top_headlines(limit=3) # ottieni i 3 titoli principali delle notizie globali
+**AVAILABLE TOOLS:**
+1.  `get_latest_news(query: str, limit: int)`: Get the 'limit' most recent news articles for a specific 'query'.
+2.  `get_top_headlines(limit: int)`: Get the 'limit' top global news headlines.
 
+**USAGE GUIDELINE:**
+* Always use `get_latest_news` with a relevant crypto-related query first.
+* The default limit for news items should be 5 unless specified otherwise.
+* If the tool doesn't return any articles, respond with "No relevant news articles found."
+
+**REPORTING REQUIREMENT:**
+1.  **Analyze** the tone and key themes of the retrieved articles.
+2.  **Summarize** the overall **market sentiment** (e.g., highly positive, cautiously neutral, generally negative) based on the content.
+3.  **Identify** the top 2-3 **main topics** discussed (e.g., new regulation, price surge, institutional adoption).
+4.  **Output** a single, brief report summarizing these findings. Do not output the raw articles.
 """