Task: Finalize list attachment merge

Identity

Finalize the already committed local merge b08f2960fa4db09c807b6fb61dfba33dc524a274 and integration record a010bb4c86ac5eadc010afda50cd7d841be76851.
Record the merge under canonical Integrated Through, verify the remote has no unintegrated commits, push main without force, and verify the final remote ref.
Complete task-aware project-document gates and release Integration ownership from a clean worktree.

The merged source contains documentation only. Do not implement the observed AgentBus reply gap or change product behavior.
Do not modify source task records, rebase, force-push, deploy, restart services, mutate Kubernetes, read secrets, access ERP, retry live tasks, or send external business messages.
If origin/main advances outside local history, stop and reconcile explicitly before pushing.

Verified and finalized merge commit b08f2960fa4db09c807b6fb61dfba33dc524a274, which integrates source task commit 97e2982 and adds only its read-only behavior-inspection record.
Preserved all current product code and behavior. In particular, this task did not implement the source record's optional follow-up for immediate AgentBus/WeChat feedback on invalid roster workbook content.
Pushed local main without force. The remote advanced from 688a2770a5bdc66b08bdaeb8b0574f8ad2a5c88d to ba380fa3e0719176048f48b92e8f6e5712b1df11.
Verified git ls-remote, local HEAD, and origin/main all resolved to ba380fa3e0719176048f48b92e8f6e5712b1df11 after push.
No deployment, restart, Kubernetes mutation, secret read, ERP access, live-task retry, extension load, force push, or external business message occurred.

Source commit inspection: exactly one 44-line task record; no code/config/contract/release change.
node --run check:repo: 9/9 passed.
node --run check: passed.
node --run test:control-plane: 135/135 passed.
node --run test:legacy: 255/255 passed.
node --run build: passed.
check_project_docs.py: passed.
Task-aware check_doc_drift.py: passed after clean-baseline finalization ownership was established.
Pre-push git rev-list --left-right --count origin/main...main: 0 4; ancestor check passed.
git push origin main: passed as a non-force fast-forward.
Post-push remote and local/tracking refs matched at ba380fa3e0719176048f48b92e8f6e5712b1df11.

If explicitly requested in a separate product-change task, add an immediate AgentBus/WeChat result when a nominal Excel attachment contains invalid roster content while keeping the original task in awaiting_attachment.

None. This task finalizes documentation-only integration and remote synchronization.