fix: get command now uses deduplication manager for chunk retrieval

[kpj2006]

fix: #93

1. Initialize Deduplication Manager

Added in cmd/get.go after passphrase retrieval:

// Initialize deduplication manager
dedupManager, err := deduplication.NewManager(vaultRoot, vaultConfig.Deduplication)
if err != nil {
    return fmt.Errorf("failed to initialize deduplication manager: %v", err)
}

2. Replaced Direct Filesystem Access

Before (Broken):

// Get the chunk path
chunkPath := filepath.Join(vaultRoot, ".sietch", "chunks", chunkHash)

// Check if chunk exists
if _, err := os.Stat(chunkPath); os.IsNotExist(err) {
    return fmt.Errorf("chunk %s not found", chunkHash)
}

// Read the chunk data
chunkData, err := os.ReadFile(chunkPath)
if err != nil {
    return fmt.Errorf("failed to read chunk: %v", err)
}

After (Fixed):

// Read the chunk data using deduplication manager
// This properly resolves chunks through the deduplication index
chunkData, err := dedupManager.GetChunk(chunkHash)
if err != nil {
    return fmt.Errorf("failed to read chunk %s: %v", chunkHash, err)
}

🧪 How It Works

The dedupManager.GetChunk() method:

• If deduplication disabled: Falls back to direct filesystem access (backward compatible)
• If deduplication enabled:
  1. Looks up chunk in deduplication index
  2. Gets the actual storage hash from index entry
  3. Reads chunk from disk using storage hash

[codecov]

Codecov Report

❌ Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
cmd/get.go	0.00%	6 Missing ⚠️

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[S4tvara]

Hi @kpj2006 ,
Thanks a lot for working on this! Another PR has already addressed the same issue, so I’ll be closing this one to avoid duplication. Really appreciate your effort here 🙏

Cheers,
Nilay