Move interfaces.LRU to lru.LRU

[iain-macdonald]

No description provided.

[Copilot]

Pull request overview

This PR relocates the generic LRU cache interface from server/interfaces into the server/util/lru package and updates callers to reference the new lru.LRU[...] type, decoupling most code from the concrete LRU implementation.

Changes:

• Moved the LRU[V] interface definition from server/interfaces/interfaces.go to server/util/lru/lru.go.
• Updated lru.NewLRU to return the lru.LRU[V] interface and made the concrete implementation unexported.
• Updated multiple caches and helpers to use lru.LRU[...] instead of interfaces.LRU[...] / *lru.LRU[...].

Reviewed changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
server/util/lru/lru.go	Introduces exported LRU interface in-package, makes implementation unexported, and changes NewLRU to return the interface.
server/util/claims/claims.go	Switches claims parser cache field to lru.LRU[*Claims].
server/interfaces/interfaces.go	Removes the LRU interface from the shared interfaces package.
server/backends/memory_cache/memory_cache.go	Updates in-memory cache ledger to depend on lru.LRU[[]byte].
server/backends/disk_cache/disk_cache.go	Updates disk cache partition ledger to use lru.LRU[*fileRecord].
enterprise/server/util/oci/oci.go	Updates resolver tag->digest cache type to lru.LRU[...].
enterprise/server/remoteauth/remoteauth.go	Updates remote-auth JWT cache type to lru.LRU[string].
enterprise/server/remote_execution/filecache/filecache.go	Updates filecache LRU field type to lru.LRU[*entry].
enterprise/server/remote_execution/copy_on_write/copy_on_write.go	Updates mmap LRU field type to lru.LRU[*Mmap].
enterprise/server/remote_execution/containers/podman/podman.go	Updates image-existence cache to lru.LRU[time.Time].
enterprise/server/oci/ocifetcher/ocifetcher.go	Updates puller LRU field type to lru.LRU[*pullerLRUEntry].
enterprise/server/iprules/iprules.go	Updates IP rule cache to lru.LRU[*ipRuleCacheEntry].
enterprise/server/backends/distributed/distributed.go	Updates lookaside cache to lru.LRU[lookasideCacheEntry].
enterprise/server/backends/authdb/authdb.go	Updates API key group cache to lru.LRU[*apiKeyGroupCacheEntry].

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