Handle exceptions while writing to files#4400

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SuuperW wants to merge 10 commits intoTASEmulators:masterfrom

SuuperW:dot_saving

Commits on Sep 7, 2025

Handle exceptions while writing a movie file, and use a temporary file until writing has completed. Avoids crashing and prevents loss of data in the event of an exception mid-write.
SuuperW
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Add support for backup files in FileWriter and better error reporting.
SuuperW
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Handle most errors related to savestate files. Autosave last slot is still broken on close and on TAStudio open.
SuuperW
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Update comments, rename method, and remove obsolete things.
SuuperW
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Move stuff around to make more sense for ask-user-about-saving-or-canceling flow even though not all asking and error handling is implemented yet. Also, fix: respect the cancel button.
SuuperW
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Handle SRAM saving failure.
SuuperW
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Fix: CheatList was getting forcibly autosaved, after the method that properly checks the autosave config option.
SuuperW
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Handle file writing errors for movies and all tools.
SuuperW
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Handle errors when saving config file.
SuuperW
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Handle file errors when saving a macro.
SuuperW
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