Date: 2026-04-28
Run ID: 2026-04-28T11-35-44_magellan-pay
Plugin: Magellan Pay v1.0.0 — WooCommerce sandbox payment gateway with transaction logging and refund support
Goal: Full-surface evaluation of the Sonnet Manager + Sonnet Planner + Haiku Tester stack on magellan-pay (second plugin in the Pilot 17 series). Compare recall vs Pilot 17c (same stack, same plugin, 6/10 recall) after amendments from Pilot 17c were shipped.
| Role | Model | Variant |
|---|---|---|
| Manager | Claude Sonnet 4.6 | main conversation |
| Static analysis (Phase 1.5) | Claude Sonnet 4.6 | planner-sonnet subagent |
| Charter generation (Phase 3) | Claude Sonnet 4.6 | planner-sonnet subagent |
| Recon scout (Phase 2) | Claude Haiku 4.5 | tester-haiku subagent |
| Wave Testers (Phase 4) | Claude Haiku 4.5 | tester-haiku subagent |
| Meta-review (Phase 5.4) | Claude Sonnet 4.6 | general-purpose subagent |
| Escape-analysis (Phase 5.5) | Claude Sonnet 4.6 | general-purpose subagent |
Browser driver: playwright-cli-headless — Playwright CLI (npx @playwright/cli), no MCP server. Each Tester is an isolated subprocess; tool calls do NOT serialize.
| Phase | Description | Agent | Notes |
|---|---|---|---|
| 0 | Dependency check | shell script | All deps OK |
| 1 | Mission intake + run setup | Sonnet manager | missions/magellan-pay.md |
| 1.5 | Static analysis | Sonnet planner | 9 features, 15 hot hypotheses, parity passes |
| 2 | Recon | Haiku tester | 7 surprises (S1–S7), 10 turns, 63k tokens |
| 3 | Charter generation | Sonnet planner | 6 charters, full-surface mode |
| 4 | Wave dispatch (critical + high) | Haiku testers × 4 | gateway-settings-cluster failed (macOS socket EINVAL), retry succeeded |
| 5.1–5.3 | Aggregation + token capture | scripts | 13P / 3Q / 9I / 8! |
| 5.4 | Meta-review (pass 1) | Sonnet | 5 HIGH gaps → supplementary Tester dispatched |
| 5.4b | gateway-settings-cluster retry | Haiku tester | Succeeded; 2P |
| 5.4c | Meta-review (pass 2) | Sonnet | 2 HIGH gaps remain (accepted); session closed |
| 5.5 | Escape-analysis | Sonnet | 8/10 recall; 2 misses; 2 amendments proposed |
| Charter | Type | Priority | Status | Findings |
|---|---|---|---|---|
gateway-settings-cluster |
hypothesis-cluster | critical | complete (retry) | 2P 0Q 0I 2! |
payment-processing-andlist |
andlist | critical | complete | 6P 1Q 5I 3! |
refund-processing-cluster |
hypothesis-cluster | critical | complete | 2P 0Q 2I 1! |
transaction-log-cluster |
hypothesis-cluster | high | complete | 3P 2Q 2I 2! |
activation-lifecycle-cluster |
hypothesis-cluster | medium | pending | — |
breadth-tour |
breadth | medium | pending | — |
| # | Issue | Verdict | Session |
|---|---|---|---|
| 1 | No test mode indicator on checkout | missed | — |
| 2 | Transaction log no pagination | caught-exact | transaction-log-cluster |
| 3 | Refund button works for wrong gateway | caught-exact | refund-processing-cluster |
| 4 | Test mode toggle doesn't clear/separate API keys | caught-exact | gateway-settings-cluster |
| 5 | Float rounding errors on transaction amounts | caught-exact | payment-processing-andlist |
| 6 | Empty API key saves silently in live mode | caught-exact | gateway-settings-cluster |
| 7 | API keys visible in page source as plain text | missed | — |
| 8 | Stock reduced before payment confirmation | caught-exact | payment-processing-andlist |
| 9 | Zero-total orders sent to gateway (error) | caught-exact | payment-processing-andlist |
| 10 | Double-click creates duplicate orders | caught-semantically | payment-processing-andlist (source only — Amendment I drift #5) |
| Severity | Title | Session |
|---|---|---|
| critical | Stock decremented BEFORE payment validation; not restored on decline | payment-processing-andlist |
| critical | Zero-total orders (100% coupon) rejected by payment gateway | payment-processing-andlist |
| critical | Provider-identity guard missing: process_refund() accepts refunds for any payment method | refund-processing-cluster |
| critical | Amount validation missing: process_refund() accepts null, zero, negative, and over-amount refunds | refund-processing-cluster |
| major | API credentials shared between test and live mode | gateway-settings-cluster |
| major | Gateway settings form saves with empty API credentials in live mode without validation error | gateway-settings-cluster |
| major | Payment submission form lacks client-side safeguards (no disable-on-click) | payment-processing-andlist |
| major | Transaction and payment-state operations not wrapped in database transaction | payment-processing-andlist |
| major | FLOAT column for monetary amounts causes IEEE-754 precision loss | payment-processing-andlist |
| major | Card payment form validates only card number length; ignores expiry and CVC | payment-processing-andlist |
| major | Transaction log page loads all 99,999 rows into PHP memory with no pagination UI | transaction-log-cluster |
| major | Order column links use legacy post.php URL, breaking on WooCommerce HPOS stores | transaction-log-cluster |
| minor | Transaction ID column rendered without HTML escaping | transaction-log-cluster |
- Refund amount validation absent — critical (null/zero/negative/over-amount all accepted)
- DB operations lack transaction wrapping — major (partial-failure leaves inconsistent state)
- HPOS-incompatible order URLs — major (post.php?post= 404s on WC 8.0+)
- Card expiry and CVC not validated — major
- Transaction ID unescaped in log output — minor
| Role | Model | Input | Output | Cache write | Cache read | Cost |
|---|---|---|---|---|---|---|
| Manager | Sonnet 4.6 | 9,712 | 222,644 | 1,340,779 (1h) | 25,974,367 | $19.21 |
| Planners + meta-review | Sonnet 4.6 | 245 | 96,893 | 1,514,765 (5m) | 7,398,173 | $9.35 |
| Haiku Testers (×5 + recon) | Haiku 4.5 | 33,675 | 232,615 | 3,440,809 (5m) | 100,148,370 | $15.51 |
| Total | $44.07 |
29 subagent calls total. Wave wallclock: ~6 min (4 parallel Testers, playwright-cli → no MCP serialization).
- Issue 1 (no test-mode indicator at checkout) — 3rd consecutive miss. Mode-toggle surface tour charter step wasn't concrete enough for Haiku Testers.
- Issue 7 (API keys as plain-text inputs) — regression from Pilot 17b catch. Amendment F (view-source) exists but wasn't anchored to credential field type probe.
- activation-lifecycle-cluster + breadth-tour — medium charters, not dispatched this wave.
Two amendments applied to skills/tester-mindset/SKILL.md, committed with references to this run + issue numbers:
-
Mode-indicator probe for mode-toggle surfaces — new section "Probe mode-indicator presence on customer-facing surfaces". Rule: charter must include a literal probe step to visit the customer-facing surface while toggle is active and verify the UI communicates active mode. Closes Issue 1 miss class (3-pilot miss). Generalizes to test/live, sandbox/production, dry-run/commit, demo/real on any web app.
-
Credential input field type probe — sub-clause added under "Inspect HTML source, not just parsed DOM". Rule: for any settings form with API keys, secrets, or passwords, view page source and verify
type="password"on credential inputs. Closes Issue 7 regression. Reinforces Amendment F with a specific credential-field anchor.
Amendment I drift (Issue 10) informational — 5th occurrence. Hard classification gate already exists in skill file from Pilot 17c. No new amendment; pattern noted.
| Pilot | Stack | Plugin | Recall | Cost |
|---|---|---|---|---|
| 17 | Sonnet+Haiku | magellan-backups | 9/10 (90%) | ~$47 |
| 17b | Sonnet+Haiku | magellan-pay | ~7/10 | — |
| 17c | Sonnet+Haiku | magellan-pay | 6/10 (60%) | $26.04 |
| 17d | Sonnet+Haiku | magellan-pay | 8/10 (80%) | $44.07 |
Recall improvement from 17c→17d (60%→80%) driven by: (1) gateway-settings-cluster supplementary retry succeeding, (2) Pilot 17c amendments (Step 8.12 provider-identity, Step 8.9 settings-path, c2 classification gate) firing correctly. Remaining misses are Issues 1 and 7, both covered by amendments shipped this pilot.