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Randalix
013a5d9cc8
A remote case's workingDir is an absolute path on the remote host, but the file read routes resolved it with local `fs`: `validateSessionFilePath`'s realpathSync fails for a path that does not exist on the Codeman host, so every preview of an agent-written file answered "File not found" (#415). Add src/remote-files.ts as the single remote-read layer, built on the same buildSshConnectionArgs() the launch uses: - remoteProbePaths(): ONE round trip returning realpath + stat for the requested path AND the workspace root, so containment is checked against a remotely canonicalized root (a symlinked remotePath is ordinary). - remoteCreateReadStream(): streams the body (cat, or tail -c +N | head -c L for a Range) with nothing buffered in memory, and reaps the ssh child when the response ends so an aborted download cannot orphan it. - remoteReadFile(): bounded read for file-content. file-raw, file-content, file-preview and file-thumbnail now share one local/ remote target resolution. Guards keep their local strength: lexical pre-check, remote realpath, workspace containment, sensitive-path blocklist, and the size cap applied to the remote size before any bytes are read. An unreachable host answers 502 with the remote reason instead of a misleading 404. Nothing is ever copied to the Codeman host and there is NO local fallback (an sshfs mount of the same tree must not shadow the remote bytes). Deliberately unchanged: writes (edit=1 / PUT now answer 400 explicitly while the viewer hides its Edit affordance), office previews, thumbnails, file tree, picker, external attachment registration and tail-file stay local-only.