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T 096

uid: T-096 title: Restore the Claude↔NAS root-exec channel (DSM Task Scheduler id=4 dispatcher silent) status: blocked area: infra created: 2026-06-22 updated: 2026-07-01 related: I-006, T-053, T-082, T-084

Why

The Claude↔NAS root-exec channel (documented in docs/eop-tasks/runbooks/claude-nas-channel.md) is currently dead β€” DSM Task Scheduler id=4 (the dispatcher) returns success:true to method=run but the dispatcher never executes. This blocks every cloud-side diagnostic that needs to read container-level state on the NAS β€” most immediately I-006 (receipt detail drawer images render as a placeholder picture icon). The fix has zero app surface area, but without root-exec a cloud agent can't docker logs <serving-container> to capture the runtime stack trace the ticket needs.

For the agent picking this up β€” this is the cloud agent's enquiry, you have shell: Owner pointed me here because you (Accounting [Infrastructure Development]) ran the recent NAS deploy + the T-084 cron migration that touched the same scheduler surface. This task is the message β€” not a slack/email I couldn't paste over. Full ticket-side evidence with redacted-but- reproducible proofs lives in I-006 (commit 5715932 on nightly).

Observed (proven from the cloud sandbox)

Reached the NAS over the Cloudflare-tunnel + DSM Web API; auth + FileStation + read-side Docker APIs all work fine. Specifically on Task Scheduler id=4 (t053a-gcp-statements-backfill, owner=root, enabled β€” its run-gcp-statements.sh script still has the if [ -f "$BASE/_cmd" ] dispatcher branch at the top, unchanged):

API call Result
SYNO.Core.TaskScheduler version=1 method=run task_id=4 {success: true}
SYNO.Core.TaskScheduler version=1 method=list id=4 present, enable=True, owner=root
SYNO.Core.TaskScheduler version=1 method=get id=4 action: "Run: /volume1/docker/workspace-billing/run-gcp-statements.sh >> /var/log/gcp-statements.log 2>&1", type=script β€” config intact
Upload _cmd to /docker/workspace-billing/_cmd via FileStation success (file appears, 58 bytes)
Poll for _cmd deletion / _cmd.out creation, 60 s window _cmd never consumed, _cmd.out never written, container clock visibly advancing β€” run is a no-op
version=2 method=run error 4800 tasks must be an array of {id, real_owner} (newer signature)
version=3 method=run error 103 (method dropped)

So run succeeds at the API layer but the underlying execution never fires. The task isn't disabled, isn't owned by the wrong user, and its script is intact. Something between DSM's SYNO.Core.TaskScheduler.run and synoschedtask (or whichever exec daemon DSM 7 uses) is dropping the trigger.

Hypotheses (most β†’ least likely)

  1. T-084 collateral. T-084 added tasks id=18/19/20 (t084-ssh-fix, t084-reconciliation-heartbeat, t084-dmarc-heartbeat) and migrated heartbeat cron off GitHub. If the migration touched DSM scheduler config / permissions / synoschedtask in a way that broke run for unrelated tasks, id=4 going silent at the same time isn't a coincidence. You'd know what changed there.
  2. DSM/Synology platform update. DSM occasionally patches the scheduler hardening (the runbook notes that create/set/delete already error 105 for Web-API callers). Could be that run for tasks not invoked by the UI is now also gated.
  3. run-gcp-statements.sh exits in a way that breaks subsequent invocations β€” e.g. left a lock file, or its exec > "$LOG" redirect blocks if /var/log/gcp-statements.log ownership / sudoers config drifted. (Lower priority β€” the dispatcher branch returns before reaching that code, but worth ruling out.)
  4. Quota / disk / cgroup limits. Less likely given other tasks (id=18/19/20) presumably still run.

Definition of done

A cloud agent (this session or a future one) can write a _cmd script to the NAS via FileStation, trigger SYNO.Core.TaskScheduler.run task_id=4, and read the resulting _cmd.out within ~30 s, with the dispatcher's === claude-exec @ <utc> === header + the script's stdout + === rc=$? === footer all present. Verify with a trivial round-trip (e.g. echo + hostname + date).

Hints for the fix

If T-084 (or anything else recent) is the trigger, the comparison points to look at:

  • DSM Log Center β†’ Task Scheduler logs around 2026-06-22T07:45 UTC (when eop-app exited 1 β€” may or may not be coincidence) and the last known-good id=4 run (T-053a backfill ran 06-21).
  • /var/log/synoschedtask.log, /var/log/scheduler/* if present.
  • Whether the T-084 cron tasks (id=18/19/20) themselves are actually firing right now β€” same symptom in those would confirm a platform-wide break rather than id=4-specific.
  • The sudo -n "$DOCKER" run … line in run-gcp-statements.sh β€” if T-084 changed the sudoers config for the root user's docker access, the script might fail before/during the dispatcher's if [ -f _cmd ] branch (unlikely but cheap to check).

What unblocks I-006 once this is restored

I-006 is currently blocked waiting on this. Once root-exec works again, the cloud agent can run, against the serving container:

docker ps --format '{{.Names}}\t{{.Image}}\t{{.Status}}'    # find the live app container
docker inspect <that-container> --format '{{.Image}} {{.Created}}'
docker logs <that-container> --since 2h 2>&1 | grep -iE 'image-meta|receipts|drive|Error' | tail -40

That stack trace either (a) confirms T-091's "stale image" diagnosis (recreate fixes it) or (b) escalates I-006 to a real runtime bug β†’ its own T-NNN.

Out of scope

  • Auto-redeploy on each :main build β†’ already tracked at T-091.
  • Cleanup of the orphaned eop-app Container Manager row (Exited (1) at 2026-06-22T07:45:07Z, started 06-21 18:08) β€” a 1-line docker rm after confirming nothing depends on its mounts; fold into your next NAS visit, no task needed.
  • Runbook drift (the runbook's DSM=…account=…password=… cred format doesn't match the live session env, which exposes DSM (URL only) + separate DSM_account / DSM_password) β€” Records (Infrastructure) will patch the runbook in a separate docs-only commit.

Decision log

2026-06-22 β€” opened (todo)

  • βœ… Attestation (Records (Infrastructure)): read AGENTS.md; scope-scanned the board β€” no existing task covers "root-exec channel restoration". T-091 is the sibling "auto-redeploy" task; T-084 is the cron migration that most likely caused this; this task is the narrow infra fix for the dispatcher itself.
  • Source: Records (Infrastructure) Β· https://claude.ai/code/session_018RDB37kCqfouHdygVXTAtD
  • Proposed by: Records (Infrastructure), as the diagnostic blocker for I-006.
  • Approved by: the owner, 2026-06-22.
  • Owner, 2026-06-22 (verbatim):

    "It's the 'Accounting [Infrastructure Development]' agent. Do you wanna draft a message for it and enquire in regards?" "Actually I'm unable to copy and paste your message, so can you actually create an issue task on the task board and I'll point the agent there to work on the task instead"

  • Rationale: the original ask was an enquiry message to the deploy-running agent. Owner can't copy/paste chat output, so the task file IS the message β€” same evidence, same asks, on the board where the agent already operates. T-NNN (not I-NNN) because the symptom is infra/structural (a scheduler-execution break), not an in-app transaction issue.
  • Linkage: I-006 is the symptom that exposed this; T-091 is the related auto-deploy task. Cross-linked both directions.

2026-06-23 β€” renumbered T-092 β†’ T-096 (cross-agent UID collision: nightly vs main)

  • βœ… Attestation (Accounting [Infrastructure Development]): read AGENTS.md; following the "UID collisions across parallel branches β€” renumber on merge" rule. The owner asked me to proceed with the lockstep merges between main and nightly; this renumber unblocks the next main↔nightly reconciliation by removing the T-092 add/add collision.
  • Source (edit): Accounting [Infrastructure Development] Β· https://claude.ai/code/session_015P6KzVYsQCLgEmUjR9bMwM (I'm editing another agent's task β€” Records (Infrastructure) opened this. The rename changes only the file path + frontmatter uid + the forward reference in I-006.md. Content and all prior dated entries stay intact per AGENTS.md.)
  • What changed:
  • docs/eop-tasks/tasks/T-092.md β†’ T-096.md (frontmatter uid: T-092 β†’ uid: T-096)
  • docs/eop-tasks/tickets/I-006.md β€” task: T-092 β†’ task: T-096 (the only forward ref)
  • docs/eop-tasks/README.md β€” next-free T-096 β†’ T-097
  • Why: origin/main carries a different T-092 ("WOPC β€” render per-line-item notes under the fee type", opened by Document Rendering Fine-Tuning via PR #787 β†’ close-out #788/#789, status done). origin/nightly carries this T-092 (Records (Infrastructure)'s "Restore the Claude↔NAS root-exec channel"). When a future merge in either direction tried to reconcile, the add/add collision blocked the lockstep ff. WOPC's T-092 is done (immutable per close-the-loop), so this task (still todo, no implementation yet) is the one that renumbers. T-096 chosen because it's nightly's README next-free at the moment of renumber.
  • Immutable history preserved: every prior dated entry, the verbatim owner quotes, the diagnostic evidence with task_id=4 references, the runbook pointers β€” all still say T-092. Per AGENTS.md "only forward references move; the historical record stays as-is."
  • Cross-refs left as-is (historical): T-094.md mentions T-092 in the context of its own earlier rename; T-095.md + I-007.md mention T-092 in their dated entries quoting prior owner direction. None of those are forward refs to the Claude↔NAS task β€” they reference the collision history.

2026-07-01 β€” moved to blocked (owner)

Moved todo->blocked per owner. Premise partly eroded (app moved to Vercel so the NAS app-container this channel wanted to debug is gone; local agents now have direct NAS SSH) β€” but BLOCKED not dropped, pending a decision on whether the DSM root-exec channel is still wanted for the scraper box / cloud agents. I-006 stays blocked on this (not closed). blocked_on: owner decision on whether the DSM channel is still needed post-Vercel. [owner: 'T-096, let's move it to blocked'] - Source (edit): EOP Local Assistance (fork) Β· session edb0abc7-6373-449b-8e31-379fd38d391b