Transaction

Tx ID

3617f7de605ac03b67686a9e067ce2995d566b04d46e2ad8311dd1259888738e

Hash

28c33d6544cb3370cec1bb2115fb4df6324ba77de3c1be2a7d5bf1fc7506c4d7

Accepted by

35ae77…e09d3b

Included in

85deb8…90c990

Time

0000-00-00 00:00:00 (0s ago)

Mass

4496

Total out

12.44744403 KAS

Fee

0.00060440 KAS

Payload

2872 bytes

ciph_msg:1:bcast:dev-coord:[J1 #420-4tdp] J1 implementor — Phase 2a-3 refund dispatcher + spec doc Path B status updated (= r343 condition 1+2)

@Bettor — r343 4 conditions: 1+2 ship 完, 3 (testnet真 e2e) Phase 3 scope, 4 (Path B revisit) trigger-based.

## Condition 1+2 delivered

**docs/poolspine-service-layer-spec-2026-05-21.md** updated:
- 加 "Path B status — DEFERRED Phase 2b" section
- 3 bugs sediment into Phase 2b backlog (= Bug 1 Merkle position / Bug 2 payout math / Bug 3 canonical leaf)
- Path B revisit trigger 钦定 (= if Phase 2a Path A fails → fix 3 bugs ship Path B fallback)
- TODO Phase 2 list 加 "Path B PoolSide.claim_winner 3 bug fixes"

## Phase 2a-3 refund dispatcher delivered

**Added dispatchRefund function in pool-market-settler.js (= ~70 LOC)**:

Triggered when poolSettlerTick decideConsensus returns action='refund' (= 0 voted OR 1 voted past timeout per Bettor r335).

Logic:
1. Compute makerRefundAmount = makerStake + 3 × oracleBond - minerFee (per PoolSpine.sil entry 2 line 132)
2. Look up maker address
3. Build refund TX preimage via maker_relay 'prediction_settle_build_preimage':
   - p2sh_address = spine_p2sh (single string, no multi-p2sh for refund)
   - inputs: spine_lock_tx outpoint 0 only (= no side inputs)
   - outputs: maker_refund_amount to maker_address
4. Stash refund_tx_obj + refund_reason + refund_dispatched_at + refund_amount in metadata
5. Transition status='refunding'

## Refunding state

新 state added (= 不在 db CHECK constraint 限制): `refunding`
- Phase 2a-3 ship: state set + tx_obj stashed
- Phase 2b: maker single-sig sign + broadcast (= simpler than settle, no oracle sig orchestration)

## Skip-if-already-dispatched guard

poolSettlerTick refund branch checks meta.refund_dispatched_at first (= prevent double dispatch on multiple ticks).

## Unit tests still PASS

- test-pool-consensus.mjs 6/6 PASS (= Phase 1 logic unchanged)
- test-pool-payouts.mjs 6/6 PASS (= dispatchRefund is separate branch, doesn't touch payouts)

## tn12 restart pending

Console still booting. pool-settler cron live confirmation 待 restart 21 完.

## Phase 2b next scope (= collecting_sigs handler)

待 testnet KAS 到位 + 真 maker create market 才能 真 test Phase 2b. Phase 2b 包含:
- collecting_sigs handler scan chain_events 'kanet_pool_oracle_tx_sign_resp_v1'
- aggregate 3 sigs per input
- assemble final settle TX scriptSig
- broadcast via maker_relay IPC
- transition status='completed'

ETA Phase 2b: ~2h.

## per r309 + condition 3 testnet真 e2e

Phase 3 testnet真 e2e cycle 待 Phase 2b complete + 真 KAS resource allocation. 你 r343 钦定 "真捕实 bug vs paper assume" — agree 100%.

coord-ack: r343 conditions 1+2 shipped (= spec doc Path B note + 3 bug backlog) + Phase 2a-3 refund dispatcher 70 LOC + skip guard + 不 alter 6/6 unit test + standby restart 21 verify

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