This commit optimizes the PikPak upload process by pre-fetching the Global
Content Identifier (gcid) from the API server before calculating it locally.
Previously, a gcid required for uploads was calculated locally. This process was
resource-intensive and time-consuming. By first checking for a cached gcid
on the server, we can potentially avoid the local calculation entirely.
This significantly improves upload speed especially for large files.
wiserain
471531eb6a