SQLiteSession: Consecutive same input should still trigger tool execution

[AyanAhmedKhan381]

Describe the bug
When using SQLiteSession, if the user gives the same input consecutively, the tool is not invoked the second time.
Expected behavior: Tool should be invoked every time regardless of same input.

To Reproduce

1. Create an agent with a tool using SQLiteSession
2. Call the agent with the same input twice
3. Observe that second call does not invoke the tool

Expected behavior
Every call should invoke the tool, even if the input is the same as the last one.

Environment

• OS: Windows 10
• Python: 3.10
• openai-agents-python version: latest main branch

Additional context
I believe the issue is caused by caching logic in src/agents/memory/session.py which skips consecutive duplicate inputs.

[seratch]

I don't think this is a bug. If a tool call exists in the convo and the agent thinks no need to call the tool again, it does not call. If you want to always call a tool, you can tell such in instructions or pass tool_choice=required;

agent = Agent(
    name="Assistant",
    instructions="Reply very concisely. you must call get_current_time function to get the current time.",
    model_settings=ModelSettings(
        tool_choice="required",
    ),
    tools=[get_current_time],
)