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Brennan Benson
9b1e83a7d8
* fix(files): never write through a dangling symlink A path that doesn't exist yet was authorized by walking up to the nearest existing folder. A dangling symlink fails realpath with ENOENT, so the walk stepped over it and approved the link's own path; the write then followed the link and created its target outside the allowed folders. The walk now continues from the link's target, and returns that real destination. * refactor(native-chat): rename the chat visuals folder to the chat scratch folder The per-chat folder agents write into is the chat's scratch space, not only a visuals folder. Its root becomes <state>/chat-scratch/<hash> (the hash is unchanged) and the agent variable becomes ORCA_CHAT_SCRATCH_DIR. The old ORCA_CHAT_VISUALS_DIR is never set and is still stripped from what every agent child inherits, Pi included. The visuals skill names the new variable and says the folder is temporary. * test(native-chat): keep the delivery test to the rename The launch parity snapshot already pins that every agent drops the pre-rename variable. * fix(files): refuse any dangling symlink in the missing-path walk Following a dangling link by hand resolved relative targets against the lexical parent, not the link's real folder: through a folder link the walk could loop forever or authorize the wrong file. Refuse instead: realpath can't say where a dangling link leads, but a write would follow it. * test(files): drop the loop case that duplicated the dangling-link refusal
