Delete the task list the manifest replaced

`bench/suites/tb2-cross-section.txt` and its manifest named the same twelve
tasks, and nothing kept them agreeing. One of them pins each task to a dataset
commit and one is a list of names, so the list can only ever be the copy that
goes stale — and a suite that drifted would still run, still digest, and still
classify a run over the wrong tasks as full coverage.

The `.md` beside it keeps the selection rationale; its loop-form example now
reads task ids out of the manifest, and the runner's help points its local-lane
example at a suite that exists.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SoZMfWRSGnf6FZX2Ar9rQ2

Co-Authored-By

Claude Fable 5 <noreply@anthropic.com>

Claude-Session

https://claude.ai/code/session_01SoZMfWRSGnf6FZX2Ar9rQ2

Deploy story

What this commit did to the running system — joined from the forge receipt chain, the part a commit page elsewhere cannot show.

Changed files

• modified bench/run-suite.sh
• modified bench/suites/tb2-cross-section.md
• deleted bench/suites/tb2-cross-section.txt

Diff

3 files changed, +3 -23

  bench/run-suite.sh bench/suites/tb2-cross-section.suite.json \

    --model openai/gpt-5.6-luna --lane proxy --n-concurrent 2

  bench/run-suite.sh bench/suites/local-llm.txt \

  bench/run-suite.sh bench/suites/tb2-quick.suite.json \

    --model ollama/qwen3.8:27b-mtp-q8_0 --lane local --dry-run

EOF

}

changes `-i` semantics):

```sh

grep -v '^#' bench/suites/tb2-cross-section.txt | while read -r task; do

python3 -c 'import json;[print(t["id"]) for t in json.load(open("bench/suites/tb2-cross-section.suite.json"))["tasks"]]' |

  while read -r task; do

  [ -z "$task" ] && continue

  PYTHONPATH=bench OPENAGENTS_TOKEN=... harbor run \

    --dataset terminal-bench@2.0 \

# Terminal-Bench 2.0 cross-section suite (see tb2-cross-section.md)

# One task name per line; lines starting with # are comments.

# version control / forensics

git-leak-recovery

sanitize-git-repo

merge-diff-arc-agi-task

# build / compile

build-cython-ext

sqlite-with-gcov

# debugging / security code-fix

fix-code-vulnerability

# data processing

regex-log

count-dataset-tokens

# security / forensics / sysadmin

password-recovery

openssl-selfsigned-cert

# networking / service configuration

nginx-request-logging

# long-horizon

schemelike-metacircular-eval