Give finance a seven-day recovery window

A deployment script overwrote or deleted invoice blobs in the finance storage account. The containers remain intact, but recovery two days later restored only a few files. Finance needs its block blob data recoverable to any point in the preceding seven days without weakening existing deletion protection.

Repair blob-service-properties.json to provide a seven-day point-in-time recovery window for future changes. Preserve the supplied account identity, retain at least the current seven days of blob soft delete, and keep container soft delete covering the recovery window.