ci/woodpecker/pr/ci Pipeline was canceled
--socket forwards -L verbatim when given; when OMITTED the CLI sends no -L at all and agent-send.sh's own resolution governs (explicit -L > MOSAIC_TMUX_SOCKET > unique hit > ambiguity refusal, B1/PR #1466). Measured design note: comms.ts was already correct by construction after B1 — this change pins it with a spec arm (no -L forwarded when --socket omitted) and makes the contract explicit in the option help, so a future default-guess here cannot silently reintroduce the stale-twin defect. Specs 7/7.