Remove the argument session_id from the constructor to support different sessions

[DavdGao]

AgentScope Version

1.0.2

Description

• Remove the argument session_id, so that one JSONSession object can handle multiple sessions
• Modify the example accordingly

Checklist

Please check the following items before code is ready to be reviewed.

• Code has been formatted with pre-commit run --all-files command
• All tests are passing
• Docstrings are in Google style
• Related documentation has been updated (e.g. links, examples, etc.)
• Code is ready for review

[Copilot]

Pull Request Overview

This PR refactors the session management system to support multiple sessions by removing the session_id parameter from the constructor and moving it to the method level. This allows a single session object to handle different session IDs dynamically.

• Remove session_id from session constructors and move it to save_session_state and load_session_state methods
• Add deprecation warning for backward compatibility when session_id is still passed to constructor
• Update method signatures to include session_id and allow_not_exist parameters with proper error handling

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/agentscope/session/_session_base.py	Updated base class to remove session_id from constructor and add it to method signatures
src/agentscope/session/_json_session.py	Refactored JSONSession to support dynamic session IDs with deprecation warning
examples/functionality/session_with_sqlite/sqlite_session.py	Updated SqliteSession implementation to match new interface
examples/functionality/session_with_sqlite/main.py	Modified example to demonstrate multi-user session handling
tests/session_test.py	Updated test to use new session_id parameter in method call
docs/tutorial/zh_CN/src/task_state.py	Updated Chinese documentation example
docs/tutorial/en/src/task_state.py	Updated English documentation example

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