docs: update documentation to reflect 100% blob storage model
Rewrite documentation to match the new architecture where all
file metadata lives in PostgreSQL and content is stored as
content-addressed blobs via DedupService.
Updated files:
- internal-architecture.md: complete rewrite — new DB schema,
blob repos (FolderDb, FileBlobRead/Write, TrashDb), updated
DI container, service groups, architecture diagram, data flows
- file-system-safety.md: repurposed as storage-safety.md —
covers PostgreSQL ACID guarantees + DedupService atomic writes
- caching-architecture.md: updated repo references to blob repos,
removed write-behind cache section, updated upload/download flows
- trash-feature-summary.md: rewritten for soft-delete model
(is_trashed flag, trash_items VIEW, TrashDbRepository)
- share-integration.md: clarified ShareFsRepository scope,
updated DI snippet, added blob storage context note
- deduplication.md: updated DI snippet (dedup injected into repos)
- deployment.md: updated feature matrix (file storage requires DB)
- important-delta-sync-implementation.md: updated DI references
Removed legacy references: IdMappingPort, StorageMediator,
WriteBehindCache, FsFileRepository, FsFolderRepository,
TrashFsRepository, folder_ids.json, file_ids.json.
Dionisio
e071841ec2