Drop null keys from every licence, server and export source, not only Widevine. dl now finds remote sessions and imports through ServerKeySource instead of private fields.
Cache proxy provider catalogues (10 min), reuse vaults and CDMs across one batch licence call, and cache the health update check, /api/services entries and parsed service config.yaml.
Judge a vault KID only on a file whose KID map holds it, tell remote vaults of a bad pair only once another key replaces it, and let the server CDM unflag a pair it returns; the server never flags a CDM-licensed pair. Log FFmpeg stderr on a failed check and name the missing CDM when none is set.
The server CDM stub names only the manifest's KIDs; sibling keys stay content keys. API and HTTP vaults retry a 429, and a vault that is down or still rate limited costs one timeout per run.
Relay the service's CDM calls to the client, accept the service's allowed identity config (for example ESN/Kpe/Kph), add the server_vault grant and a lent server-device mode that reads keys only from vaults and returns no login cache. Also fixes the proxied certificate fetch, Base64 Widevine licences, an answered call that stayed pending and a missing default quality.
A session above the cap licenses with the client's own device, and a track above it in an uncapped -q run is handed back to the client. Also names the fallback in the ccextractor crash warning.
A client with a local PlayReady device asked the server for a PlayReady licence on a service the server maps to a Widevine device. Both server_cdm routes now share one candidate list from one config lookup, report the system that licensed in drm_type, and the client adopts it.
The licence response lists KIDs a server vault supplied, the client proves them with the decode check, and a bad pair goes to the new session keys/bad route so the server flags its own row. Client vault keys go first over --remote, and the dashboard health warns when no SQLite vault can store flags.
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