Route VOE API and login uploads through one batch-scoped account claim registry so direct identities and uncertain outcomes are shared across authentication paths.
Fail closed for ambiguous Doodstream web uploads after POST, use canonical account identities across web and API paths, and singleflight derived API-key resolution outside upload semaphore admission.
Preserve distinct symbol-only recovery titles with a stable code-point fallback while matching Unicode-equivalent presentation forms. Add deterministic regression coverage for duplicate identities, uncertain successors, concurrent key resolution, and mixed auth paths.
Scope remote code ownership to normalized hoster and account identities while retaining title-only recovery serialization and canonical Unicode title matching.
Mark post-upload ambiguity and duplicate identities as uncertain so retries, account fallback, and later same-title jobs fail closed instead of reporting unsafe success.
Acquire recovery title leases before hoster and global semaphores, revalidate failed-account overrides before upload, and clear claim state at batch boundaries.
Add deterministic concurrent coverage for same-code rejection, distinct-code parallel success, uncertainty propagation, semaphore fairness, account isolation, Unicode equivalence, and registry lifetime.
Share account-scoped recovery claims with login uploader instances and serialize same-title recovery windows. Reserve direct and recovered file codes consistently, reject reused identities, and cover concurrent singleton recovery plus distinct-code and parallel-success cases.
Serialize recovery windows per hoster account and normalized filename, reserve remote codes across the batch, and keep cancellation responsive while waiting. Reject semantic and malformed file-list baselines instead of treating them as empty accounts, with focused regression coverage and release allowlist updates.
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