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Phases 1 to 5: Core Storage & Desktop Client
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This module details the completed phases of the Nube project, defining the core distributed storage and client.

Phase 1: The Core (Complete)
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*  **Task: Single Binary Hello World**
   - *Deliverable:* A single Go binary serving REST routes over HTTP/3.
   - *Traceability:* `[FUNC-WUI-BROWSER]`, `[TECH-WUI-DESKTOP]`
*  **Task: Content-Defined Chunking**
   - *Deliverable:* FastCDC implementation for slicing ingested files.
   - *Traceability:* `[FUNC-CORE-DEDUPLICATION]`, `[TECH-BLOCKSTORE]`
*  **Task: Key-Value Persistence**
   - *Deliverable:* BadgerDB integration for metadata mapping.
   - *Traceability:* `[FUNC-SYNC-FABRIC]`, `[TECH-METADATA-CRDT]`
*  **Task: Protocol Handlers Registration**
   - *Deliverable:* Host-level ``nube://`` protocol handler setup.
   - *Traceability:* `[FUNC-SHARING-LINK]`, `[TECH-DEPLOY-RPM]`

Phase 2: The Pulse (Complete)
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*  **Task: libp2p Integration**
   - *Deliverable:* mDNS local discovery and WAN AutoNAT discovery.
   - *Traceability:* `[FUNC-P2P-DISCOVERY]`, `[TECH-TRANSPORT]`
*  **Task: Sync Core**
   - *Deliverable:* GraphSync logic for recursive Merkle DAG updates.
   - *Traceability:* `[FUNC-SYNC-FABRIC]`, `[TECH-TRANSPORT]`, `[TECH-METADATA-CRDT]`
*  **Task: Protocol Freeze**
   - *Deliverable:* Finalization of Protobuf messages and gRPC streams.
   - *Traceability:* `[TECH-MERKLE-DAG]`, `[TECH-TRANSPORT]`

Phase 3: The "Glass Pane" (Complete)
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*  **Task: Web UI Framework**
   - *Deliverable:* Single embedded browser layout dashboard.
   - *Traceability:* `[FUNC-WUI-BROWSER]`, `[TECH-WUI-DESKTOP]`
*  **Task: URI Action Linker**
   - *Deliverable:* Local protocol handler triggering client import actions.
   - *Traceability:* `[FUNC-SHARING-LINK]`, `[TECH-DEPLOY-RPM]`
*  **Task: Invite Share Links**
   - *Deliverable:* Generation of static URI sharing links for import.
   - *Traceability:* `[FUNC-SHARING-LINK]`, `[TECH-TRANSPORT]`

Phase 4: Release & Hardening (Complete)
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*  **Task: FUSE Mount Integration**
   - *Deliverable:* Go-FUSE API integration mapping filesystem modifications.
   - *Traceability:* `[FUNC-FUSE-MOUNT]`, `[TECH-NATIVE-FUSE]`
*  **Task: Path Traversal Auditing**
   - *Deliverable:* Secure path cleaning and verification.
   - *Traceability:* `[FUNC-CORE-INTEGRITY]`, `[TECH-CRYPTO]`
*  **Task: Nautilus GNOME Integration**
   - *Deliverable:* GNOME Nautilus python extension package.
   - *Traceability:* `[FUNC-FUSE-MOUNT]`, `[TECH-DEPLOY-RPM]`

Phase 5: Desktop Ascendancy (Complete)
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*  **Task: Tailwind CSS Overhaul**
   - *Deliverable:* Custom Tailwind-styled dark/light theme client.
   - *Traceability:* `[FUNC-WUI-BROWSER]`, `[TECH-WUI-DESKTOP]`
*  **Task: Live Server-Sent Events**
   - *Deliverable:* Server-Sent Events broker bridging backend system with UI.
   - *Traceability:* `[FUNC-WUI-BROWSER]`, `[TECH-WUI-DESKTOP]`