fix(lint): document PLC0415 suppressions on new mcp_server_manager imports

[cursor]

Relevant issues

Linear ticket

Pre-Submission checklist

• I have added meaningful tests
• My PR passes all CI/CD checks (e.g., lint, format, unit tests)
• My PR's scope is as isolated as possible; it only solves 1 specific problem
• I have received a Greptile Confidence Score of at least 4/5 before requesting a maintainer review

Screenshots / Proof of Fix

Run logs for the failing LiteLLM Linting check on the last 'promote internal staging to main' PR (#32663, run https://github.com/BerriAI/litellm/actions/runs/29042243698):

FAIL: LIT-rule totals exceed their limit (base 999637883ce34d3944c614f38f32cfbe0bc9062d):
  LIT003: total 295 over limit 292 (this change added 3)
    litellm/proxy/_experimental/mcp_server/discoverable_endpoints.py:451
    litellm/proxy/management_endpoints/mcp_management_endpoints.py:1916
    litellm/proxy/management_endpoints/mcp_management_endpoints.py:1961

After this branch, scripts/type_discipline_gate.py --base origin/litellm_internal_staging prints

OK: every LIT rule is within its codebase ceiling (base origin/litellm_internal_staging)

and the LIT003 total across litellm/ drops back to 289 (matching the ratcheted budget)

Type

🐛 Bug Fix

Changes

The three local from litellm.proxy._experimental.mcp_server.mcp_server_manager import ... imports added in #32302 (to invalidate the per-user OAuth token cache after writing / deleting a credential) were suppressed with a bare # noqa: PLC0415, no reason. That tripped LIT003 in scripts/check_type_discipline.py, which requires # noqa: XXX # <reason>, and pushed the codebase total from 292 to 295 vs the same budget of 292. Every 'promote internal staging to main' PR then failed the type-discipline gate

Annotate each of the three imports with why the local import is required (breaking the circular import between mcp_server_manager and its callers), then run make lint-budget-update so the LIT003 ceiling ratchets from 292 to 289

  

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[codspeed-hq]

Merging this PR will not alter performance

✅ 31 untouched benchmarks

---

_{Comparing cursor/ci-autofix-automation-4226 (258c3af) with litellm_internal_staging (1d9a86e)}