docs: update TODO.md - UUIDType issues resolved

Confirmed that pinning datamodel-code-generator to 0.25.0 and adding __str__/__repr__
post-processing has resolved the 2 UUIDType test failures.

35 test failures remain (down from 37).

✨ Created with OpenCode

Author: skylarmb

TODO.md

@@ -4,7 +4,7 @@ This document tracks the 37 test failures discovered after fixing the model gene
 
 **Last Updated:** 2025-12-12  
 **Test Command:** `make test` (runs `pytest tests/unit/ tests/tracer/ tests/compatibility/ -n auto`)  
-**Total Failures:** 37 out of 3014 tests
+**Total Failures:** 35 out of 3014 tests (2 fixed: UUIDType repr issues)
 
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