fix: align MAX_CONVERSATION_TURNS in .env.example with code default

[howardpen9]

Summary

• .env.example had MAX_CONVERSATION_TURNS=40, but the code default in utils/conversation_memory.py:122 is 50
• This mismatch causes test_add_turn_max_limit to fail when users copy .env.example to .env
• Updated .env.example to 50 and corrected the comment ("25 turns = ~12 exchanges")

Fixes #332

Test plan

• Copy .env.example to .env, run pytest tests/test_conversation_memory.py::TestConversationMemory::test_add_turn_max_limit -v — should pass
• Verify no other tests depend on MAX_CONVERSATION_TURNS=40

[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request resolves an inconsistency between the example environment configuration and the application's default settings. By synchronizing the maximum conversation turns value, it ensures that developers using the provided example configuration will not encounter unexpected test failures related to this setting, thereby improving the initial setup experience and reliability.

Highlights

• Configuration Alignment: The MAX_CONVERSATION_TURNS value in .env.example was updated from 40 to 50 to match the default value used in the code (utils/conversation_memory.py:122).
• Test Fix: This misalignment previously caused the test_add_turn_max_limit test to fail when users copied .env.example to .env.
• Documentation Correction: The comment associated with MAX_CONVERSATION_TURNS in .env.example was also corrected to reflect the new default and a more accurate exchange calculation.

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Changelog

• .env.example
  • Updated MAX_CONVERSATION_TURNS from 40 to 50.
  • Corrected the descriptive comment for MAX_CONVERSATION_TURNS to reflect the new default and exchange calculation.

Activity

• The pull request addresses and fixes issue Test failure: test_add_turn_max_limit fails due to MAX_CONVERSATION_TURNS mismatch #332.
• A test plan was provided to verify the fix by running test_add_turn_max_limit after copying .env.example to .env.

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[gemini-code-assist]

Code Review

This pull request correctly aligns MAX_CONVERSATION_TURNS in .env.example with the code's default value of 50. This is an important fix to prevent test failures for users setting up the environment. I have one suggestion to improve the clarity of the comment in .env.example. Additionally, for full consistency, the documentation in docs/configuration.md should also be updated, as it currently specifies MAX_CONVERSATION_TURNS=20.

[gemini-code-assist]

The example '25 turns = ~12 exchanges' is a bit imprecise since 25 turns is exactly 12.5 exchanges. Using an approximation might be confusing for users. For better clarity, consider using an example with whole numbers that doesn't require approximation.

# So 24 turns = 12 exchanges. Defaults to 50 if not specified