U-Boot's mkimage writes the multi-file size table for script images
(`mkimage -T script`, the boot.scr format) exactly as it does for multi
images, `mkimage -l` lists the script as "Image 0", and the `source`
command skips the table before running the script ("scripts are just
multi-image files with one component", boot/image-board.c).
The uImage reader parsed the table only for IH_TYPE_MULTI, so a script
image reported sub_image_count 0 and exposed only payload.bin, whose
first bytes are the binary size table rather than the script text.
Treat IH_TYPE_SCRIPT like IH_TYPE_MULTI: parse the same bounded table,
expose image-<n>.bin components and report the size-table limitation.
payload.bin is unchanged. A script payload without a valid table now
fails closed, as a multi image already does.
* feat(artifacts): add U-Boot legacy uImage reader (part of #7129)
Recognize legacy uImages by their 0x27051956 magic and inventory them as containers: 64-byte header facts (arch/os/type/compression raw and named, load/entry addresses, name, timestamp) with header and data CRC32 verified, stored payload extractable as payload.bin, and multi-file images split from the stored size table into image-<n>.bin. Compressed payloads stay as stored; nothing is executed or decompressed. Wires the format through classification, the artifact reader dispatch, extraction, and the evidence/snapshot format vocabularies. Related to #7129 (uImage part only); HEX/SREC and FIT are out of scope.
* fix(uimage): preserve aligned component ranges and exact header facts
* fix(uimage): retain buffered members through consumption and cancellation
* fix(uimage): preserve active read and validation failure precedence
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Co-authored-by: gensokyo-dev <342580529+gensokyo-dev@users.noreply.github.com>
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