working till just before agenerate

[XuhuiZhou]

Closes #

📑 Description

✅ Checks

• My pull request adheres to the code style of this project
• My code requires changes to the documentation
• I have updated the documentation as required
• All the tests have passed
• Branch name follows type/descript (e.g. feature/add-llm-agents)
• Ready for code review

ℹ Additional Information

[codecov]

Codecov Report

Attention: Patch coverage is 44.49153% with 131 lines in your changes missing coverage. Please review.

Project coverage is 71.49%. Comparing base (4469e79) to head (7664722).

Files with missing lines	Patch %	Lines
test_server.py	0.00%	72 Missing ⚠️
sotopia/api/websocket_utils.py	60.27%	29 Missing ⚠️
sotopia/api/fastapi_server.py	59.25%	22 Missing ⚠️
sotopia/experimental/agents/base_agent.py	68.42%	6 Missing ⚠️
tests/api/test_fastapi.py	88.23%	2 Missing ⚠️

@@            Coverage Diff             @@
##             main     #305      +/-   ##
==========================================
- Coverage   72.74%   71.49%   -1.25%     
==========================================
  Files          67       68       +1     
  Lines        3816     3989     +173     
==========================================
+ Hits         2776     2852      +76     
- Misses       1040     1137      +97     

Files with missing lines	Coverage Δ
sotopia/experimental/server.py	30.09% <100.00%> (+30.09%)	⬆️
sotopia/generation_utils/generate.py	65.54% <ø> (ø)
tests/api/test_fastapi.py	88.82% <88.23%> (-0.62%)	⬇️
sotopia/experimental/agents/base_agent.py	88.13% <68.42%> (-9.37%)	⬇️
sotopia/api/fastapi_server.py	66.41% <59.25%> (-1.62%)	⬇️
sotopia/api/websocket_utils.py	58.51% <60.27%> (-12.49%)	⬇️
test_server.py	0.00% <0.00%> (ø)

... and 5 files with indirect coverage changes

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