Add PythonCodeAgent

[ahuang11]

Since LLMs excel at coding and Panel can almost wrap anything, I think it's good to add an arbitrary code executor.

Not sure how to control the formatting though. In the first view spec, the code is properly spaced with new lines. The second view spec is condensed. Ideally, it'd use the | yaml syntax for multi line strings, but not sure how to specify that.

[codecov]

Codecov Report

Attention: Patch coverage is 84.93151% with 22 lines in your changes missing coverage. Please review.

Project coverage is 52.01%. Comparing base (ee60b84) to head (09170f0).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
lumen/ai/agents.py	9.09%	10 Missing ⚠️
lumen/views/base.py	86.88%	8 Missing ⚠️
lumen/ai/models.py	0.00%	3 Missing ⚠️
lumen/ai/utils.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #896      +/-   ##
==========================================
+ Coverage   51.65%   52.01%   +0.35%     
==========================================
  Files         108      108              
  Lines       13700    13846     +146     
==========================================
+ Hits         7077     7202     +125     
- Misses       6623     6644      +21     

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[philippjfr]

Seems very scary to me, what if a user asks the LLM to write code that destroys the system or exfiltrate secrets?

[ahuang11]

Yes I thought of that which is why it's not part of the default agents, but I suppose it could add a disclaimer to use at the user's own risk. It could be useful for contained, authenticated environments.

[philippjfr]

Would be nice if this could somehow be run in a sandboxed environment, e.g. pyodide or some other WASM based Python environment.