ADE test (run 1c) — ignore: long history + review helper #1549

Throwaway issue for testing the ADE Linear agent. Safe to delete. This test needs a LONG chat history with large command outputs, so follow the steps exactly and do not skip or shorten any command, and do not combine steps.

Repo: the ade-linear-repro project (local only, no remote).

Steps

1. Run each of these as its OWN separate Bash call, in order, and do not pipe them to head/tail: seq 1 9000, seq 9001 18000, seq 18001 27000, seq 27001 36000, seq 36001 45000, seq 45001 54000, seq 54001 63000, seq 63001 72000.
2. Add and export shout(name) to greet.js returning greet(name).toUpperCase(), then run node -e "console.log(require('./greet').shout('a'))".
3. Run each as its own Bash call: seq 72001 81000, seq 81001 90000, seq 90001 99000, seq 99001 108000.
4. Use your Agent tool to start ONE foreground general-purpose subagent (not in the background) and wait for it. Tell it: "Review the uncommitted diff in this repo. As separate Bash calls run: git diff, seq 1 9000, sleep 25, seq 9001 18000, sleep 25, node -e \"console.log(require('./greet').shout('x'))\", sleep 25. Then report any correctness problems."
5. Run each as its own Bash call: seq 108001 117000, seq 117001 126000, sleep 20, seq 126001 135000.
6. Commit on the lane branch. Do not push or open a PR (there is no remote).
7. Finish with a short summary.