Refactor: migrate POSIX scaffolding to CBOR and JSONC

Documentation/TODO.md

@@ -63,11 +63,11 @@
 - [ ] POSIX-Lite-File-Persistence-Foundation
   - [ ] Mounted-Storage-Root-Config
   - [ ] Project-Folder-Creation-On-Backend
-  - [ ] moku.project.json
+  - [ ] manifest.jsonc
   - [ ] Item-Folder-Creation
-  - [ ] item.json
+  - [ ] item.cbor
   - [ ] schema.json
-  - [ ] data.json
+  - [ ] data.cbor
   - [ ] DB-To-Files-Write-Flow
 - [ ] User-and-Workspace-Domain-Readiness
   - [ ] Base-Workspace