perf: implement findings #2, #3, #17 from architecture audit

- Finding #2: Replace Mutex<HashMap> with moka::sync::Cache in file_blob_read_repository (10K cap, 30s TTI)
- Finding #3: Add chunked upload persistence with session.json + progress.bin bitmask for crash recovery
- Finding #17: Remove manual gzip compression, delegate entirely to tower-http CompressionLayer
- Remove dead code: StubCompressionPort, GzipCompressionService re-export, duplicate response structs
- All 114 tests passing

src/lib.rs

@@ -9,5 +9,4 @@ pub mod interfaces;
 pub use application::services::folder_service::FolderService;
 pub use application::services::i18n_application_service::I18nApplicationService;
 pub use domain::services::path_service::StoragePath;
-pub use infrastructure::services::compression_service::GzipCompressionService;
 pub use infrastructure::services::path_service::PathService;