Module invalidation 

Mutation-triggered invalidation helpers.

These pure helpers contain the invalidation logic for common S3 mutations. The actual call sites (S3 commands) wire them in during later tasks.

OCP

Adding a new mutation type: add one more pub fn on_*_mutation that calls store.invalidate(...) for the affected CacheKey variants. Nothing else changes.

Functions

on_bucket_mutation

Invalidate the Buckets listing for a profile when a bucket-level mutation occurs (e.g. bucket created or deleted).

on_object_mutation

Invalidate Objects and ObjectHead keys for the affected scope when an object is created, updated, deleted, or moved within bucket/prefix.