* fix(cache): make in-memory and disk increments atomic
* refactor(cache): narrow in-memory increment lock scope
* fix(cache): address follow-up review on increment tests/types
* fix(cache): refresh atomic increment coverage
* test(cache): widen increment race window with non-zero _SlowInt seed
The zero seed was falsy, so InMemoryCache.increment_cache's `get_cache(...) or 0`
and DiskCache.get_cache's truthiness guard both discarded the _SlowInt before
__add__ could run, leaving the sleep-based window-widening inert. Seed a non-zero
value and return _SlowInt from __add__ so the sleep fires on every read-modify-write
in both backends, making the concurrency regression deterministic.
* test(cache): cover InMemoryCache.async_increment delegation
Add a focused async test asserting async_increment accumulates through the
locked sync path, exercising the previously uncovered delegation line.
---------
Co-authored-by: Emerson Gomes <emerson.gomes@thalesgroup.com>
* fix: zero out crash-class basedpyright rules across litellm/
* feat(lint): add LIT009 banning inert type: ignore comments
* docs: require bracketed rule and reason on every suppression
* chore(lint): ratchet budgets down and zero crash-class pyright limits
* fix: narrow auto router routelayer through a local before calling
* test: add regression tests for crash-class fixes
* fix: drop dead AZURE_AD_TOKEN lookups and word-bound the type-ignore regex
