Implements resolve.rs: candidate_paths() turns a raw path Claude printed
into an ordered, capped, deduped list of container paths (absolute paths
pass through as-is; relative paths probe /workspace then each project
mount, in order), PROBE_SCRIPT + parse_probe_output() run one exec that
prints realpath -e of every candidate that is a regular file, and
probe_candidates() wires the two together over exec_oneshot_streams_as.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
shadowdaoandClaude Opus 5.5
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