✨ feat(pyproject): add psycopg dependency for PostgreSQL support

- 在依赖项中添加psycopg[binary]以支持PostgreSQL
- 提高项目与PostgreSQL的兼容性和灵活性

✨ feat(test2): create pdf_agent CLI application

- 添加pdf_agent函数以实现PDF代理功能
- 允许用户通过命令行界面与代理交互

test2.py

@@ -0,0 +1,48 @@
+import typer
+from typing import Optional, List
+from agno.agent import Agent
+from agno.storage.sqlite import SqliteStorage
+from agno.storage.postgres import PostgresStorage
+storage =SqliteStorage(table_name="agent_sessions", db_file="tmp/agent_storage.db")
+# db_url = "postgresql+psycopg://ai:ai@localhost:5532/ai"
+# storage = PostgresStorage(table_name="pdf_agent", db_url=db_url)
+
+def pdf_agent(new: bool = False, user: str = "user"):
+    session_id: Optional[str] = None
+
+    if not new:
+        existing_sessions: List[str] = storage.get_all_session_ids(user)
+        if len(existing_sessions) > 0:
+            session_id = existing_sessions[0]
+
+    agent = Agent(
+        session_id=session_id,
+        user_id=user,
+        #knowledge=knowledge_base,
+        storage=storage,
+        # Show tool calls in the response
+        show_tool_calls=True,
+        # Enable the agent to read the chat history
+        read_chat_history=True,
+        # We can also automatically add the chat history to the messages sent to the model
+        # But giving the model the chat history is not always useful, so we give it a tool instead
+        # to only use when needed.
+        # add_history_to_messages=True,
+        # Number of historical responses to add to the messages.
+        # num_history_responses=3,
+    )
+    if session_id is None:
+        session_id = agent.session_id
+        print(f"Started Session: {session_id}\n")
+    else:
+        print(f"Continuing Session: {session_id}\n")
+
+    # Runs the agent as a cli app
+    agent.cli_app(markdown=True)
+
+
+if __name__ == "__main__":
+    # Load the knowledge base: Comment after first run
+    #knowledge_base.load(upsert=True)
+
+    typer.run(pdf_agent)