Implement Week 4 CAS store with chunk deduplication and LRU eviction

- Add musicfs-cas crate: CasStore, ChunkHash, FileReader, ChunkManifest - Add LruEviction policy to musicfs-cache for cache size management - Integrate FileReader into FUSE filesystem for actual file reads - Use xxHash64 for content hashing, sled for index, msgpack serialization - Default cache path: ~/.cache/musicfs/chunks/ with 256 subdirs sharding - 20 new tests (14 CAS unit + 3 integration + 3 eviction), 54 total
2026-05-12 18:43:39 +02:00
parent d9e5e06166
commit ffbb238633
15 changed files with 2204 additions and 14 deletions
@@ -1,8 +1,10 @@
 mod db;
+mod eviction;
 mod metadata;
 mod tree;

 pub use db::Database;
+pub use eviction::{EvictionError, EvictionPolicy, LruEviction};
 pub use metadata::MetadataCache;
 pub use tree::{
    DirNode, FileNode, Inode, RefreshPolicy, TreeBuilder, VirtualNode, VirtualTree, ROOT_INODE,