changelog.d/4935-craft-startup-authority.md

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- **Native Word and Sheet can finish a progressing import while current access remains verified (#4935).** Startup monitors authority before import, keeps the frame hidden until a fresh admission check, and rejects revoked or superseded completions. Separate connection and RPC deadlines keep a finite overall cap, and a failed startup never claims an unconfirmed captured draft. A terminal monitor failure, including invalid lease metadata, hides a failed native frame and local-copy controls without deleting the draft; a late error from an old read no longer removes a successor writer or interrupts its capture. Writer startup also requires the fresh HTTP lease proof to corroborate a streamed grant.