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Linus Rath
5c5d982f9d
A draft saved offline now stays on the device under a stand-in id and goes to the server by itself when it's back. Until now every save was refused and the composer showed "not saved". - `lib/store/drafts`: one pending create per draft, however often it's saved. A draft from the server edited offline is replaced by create, then destroy, so a failure leaves a copy. Each create has a fixed Message-ID, looked up in Drafts after a lost response. A refused draft stays on the device with its error and can be opened. Changed on another device: both are kept and the user is told. - `JMAPClient`: stand-in ids in Email/get and Email/set resolve like calendar's, also when answering from the device. A file attached offline stays readable, and is uploaded before a save that names it. - Held files and kept mail files are stored in 1 MB chunks. Orphans are dropped at the end of a flush, counting what drafts need. - `lib/store/mail/attachments.ts`: attachments, inline images and raw messages per scope, newest first, after everything else in a pass, with eviction that spares pinned mail and never sees held files. - `mail.rawBlob` and `mail.rawStatus` for an offline export. Changed test assertions: `outbox.heldFile` and `mail.getBlob` return `blob` instead of `data`, so a file isn't held whole in memory. The attachment tests ignore raw downloads, and mail-sync runs with attachments off, because raw messages add a commit per message.