Serialize duplicate publication items within batches

[hxy91819]

Summary

• serialize publication events for the same targetRepo#itemNumber across batch commits
• return the live dashboard and workflow caps to the last safe batch size, 4
• preserve FIFO eligibility for deferred duplicate-item events
• record both failed size-8 production signals and the recovery gates in the rollout plan

Root cause

The first size-8 production claim contained two distinct queue events for openclaw/openclaw#108676. Their queue identities and revisions were independent, but both prepared mutations for the same durable record path. Combining those plans in one state commit raised StateMutationConflictError before state was written.

Batch claim admission now selects at most one event for each logical durable item. A later event remains pending and can be selected by the next batch.

The separate failure in run 29890705127 (commit_refs rejection followed by an inner invalid_batch_state_writer_identity) is documented as an independent re-advance gate rather than attributed to this root cause.

Validation

• fixed Node 24 container: full pnpm run check passed
• focused unit run: 91 files passed, including the duplicate-item regression and 24-publisher admission coverage
• local committed-range ClawSweeper review: complete, high confidence, no actionable correctness or security findings

After deployment, the rollout remains at size 4 until a safe live recovery sample proves duplicate-target serialization and deferred consumption. Size 8 will return in a separate reviewed PR only after that gate passes.

[chatgpt-codex-connector]

You have reached your Codex usage limits for code reviews. You can see your limits in the Codex usage dashboard.

[clawsweeper]

ClawSweeper status: review started.

I am starting a fresh review of this pull request: Serialize duplicate publication items within batches This is item 1/1 in the current shard. Shard 0/1.

This placeholder means the worker is alive and reading the current context. I will edit this same comment with the actual review when the claws are done clicking.

Crustacean status: shell secured, claws on keyboard, evidence pebbles being sorted.