* refactor(types): replace Any with proven types in 9 shared files
* refactor(types): replace Any with proven types in the remaining sweep files
* refactor(types): keep unproven integrations on the merge base and pin malformed-body handling
* refactor(types): leave five request paths on the merge base so non-object bodies keep their 400
* refactor(types): drop a docstring that repeats the helper name
* refactor(types): leave six files with no live malformed-payload proof on the merge base
* refactor(types): leave Anthropic pass-through SSE parsing on the merge base
* refactor(types): leave Responses output walking, the retry ceiling and concatenated tool JSON on the merge base
* fix(types): keep main's parsing in the budget window reset, utils loaders and Langfuse attributes
The new strict checks rejected inputs main skips or keeps, such as a JSONB
string in budget_limits, so these three files go back to main's version
* refactor(types): return the request tag parse failure as a value
Migrate 18 provider test files from tests/test_litellm/llms to tests/unit/llms.
194 kept tests move as-is after mutation testing; 1 test deleted
(test_completion_datarobot_with_environment_variables, env-gated no-assert);
the fixture-only fal_ai cost calculator file is removed.
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
