Run ID: 2026-04-28T11-46-58_magellan-checkout-editor
Plugin: magellan-checkout-editor v1.0.0 — WooCommerce extension for custom checkout fields (drag+drop, 7 field types, conditional logic, validation, order-meta, email injection, JSON import/export)
Ecosystem: woocommerce
Stack: Sonnet 4.6 Manager + Sonnet 4.6 Planner × 2 + Haiku 4.5 Testers × 5 (recon also Haiku)
Driver: playwright-cli-headless (Playwright CLI, no MCP — project default). 1 charter overrode to chrome-devtools-headless (Chrome DevTools MCP). See driver section below.
Dispatch: 5 charters in one concurrent wave (2 critical + 3 high; 2 medium pending). Playwright CLI = true parallel (separate processes).
Wallclock: ~22 min end-to-end (Phase 0–5 including recon + static analysis + charter gen + 5 concurrent Testers)
- Recall: 3/10 (1 caught-exact + 1 caught-semantically + 1 caught-bundled; 7 missed). Regression from Pilot 8's 6/10 on same plugin — but both misses are environmental, not coverage-taxonomy gaps.
- Two session failures eliminated 5 charters worth of planted-issue coverage:
export-artifact-andlist(Playwright CLI EINVAL, KI-001 — same macOS socket-path failure as Pilot 17b/17c on magellan-pay);admin-fields-cluster(browser auth failure + WP-CLI Phar error, likely Studio+SQLite+WooCommerce instability). - Save-persistence blockage was the run's "big bug subsumes small bugs" failure: custom fields never persisted to
wp_optionsafter Save, blocking the entire end-to-end flow (checkout render → order → email). All downstream issues (1, 3, 6, 8, 9) could not be probed regardless of session health. - Functioning sessions delivered strong signal: 1 critical stored XSS, block-checkout incompatibility (2nd confirmation — same class as Pilot 8's bonus find), import-layer capability bypass, unbounded field growth (empirical 50→100 confirmation).
- Issue 7 regression reversal: Pilot 8 missed the import AJAX capability check via b6-aggregate drift. The Haiku
import-clusterTester caught it correctly — validation that the b6-per-handler tightening carried forward. - Proposed amendments: none to probe taxonomy (environment failures dominated). Three process rules: (1) Tester turn-budget-triage gate on env blockers, (2) Manager driver-failure re-dispatch rule, (3) file source-pattern Problem even when empirical probe is blocked.
Cross-pilot arc (this plugin):
| Pilot | Date | Stack | Recall | Session failures | Notes |
|---|---|---|---|---|---|
| 2 (first WC pilot, checkout-editor) | 2026-04-23 | Sonnet Testers | — | — | Early pipeline iteration |
| 8 | 2026-04-24 | Sonnet Manager + Sonnet Testers (Chrome DevTools MCP) | 6/10 | 0 | Amendment K first clean fire |
| 18 | 2026-04-28 | Sonnet Manager/Planner + Haiku Testers (playwright-cli) | 3/10 | 2 | KI-001 + auth failure cascade |
Broader Haiku cost-floor arc:
| Pilot | Plugin | Stack | Recall | Cost | vs Opus baseline |
|---|---|---|---|---|---|
| 17 | magellan-backups | Sonnet Manager + Sonnet Planner + Haiku Testers | 9/10 | ~$19.5 | −69% |
| 17b | magellan-pay | Sonnet Manager + Sonnet Planner + Haiku Testers | 6/10 | ~$26 | ~−60% |
| 17c | magellan-pay | same | 6/10 | ~$26 | ~−60% |
| 17d | magellan-pay | same | 6/10 | ~$44 | ~−55% |
| 18 | magellan-checkout-editor | same | 3/10* | ~$44 | ~−55% |
* 3/10 is environment-dominated; 2 of 5 sessions produced 0 flows.
| Phase | Role | Model | Subagent type |
|---|---|---|---|
| Phase 0 | Dependency check | — | Bash only |
| Phase 1 | Manager — mission intake, manifest | Claude Sonnet 4.6 | main conversation |
| Phase 1.5 | Static analysis | Claude Sonnet 4.6 | planner-sonnet |
| Phase 2 | Recon scout | Claude Haiku 4.5 | tester-haiku |
| Phase 3 | Charter generation | Claude Sonnet 4.6 | planner-sonnet |
| Phase 4 | Testers × 5 | Claude Haiku 4.5 | tester-haiku |
| Phase 5 | Aggregation (scripts) | — | Node.js scripts |
| Phase 5.5 | Escape-analysis classifier | Claude Sonnet 4.6 | general-purpose |
| Driver | Family | MCP? | Charters |
|---|---|---|---|
playwright-cli-headless |
Playwright CLI (@playwright/cli) |
No — subprocess, true process isolation | export-artifact-andlist, import-cluster, admin-fields-cluster, conditional-validation-cluster (run default) |
chrome-devtools-headless |
Chrome DevTools MCP | Yes — shared MCP server, --experimental-page-id-routing |
order-email-cluster (Tester overrode run default) |
No playwright-mcp (playwright-headless / playwright-headed) was used in this run. The project default is playwright-cli-headless (Playwright CLI subprocess) which gives true per-Tester process isolation and genuine wave parallelism. The playwright-* MCP is legacy compatibility only.
6 Problems · 7 Questions · 3 Improvements · 2 Praises (across 3 completed + 2 failed sessions)
| Charter | Priority | Status | P | Q | I | ! | Turns | Tool uses | Duration |
|---|---|---|---|---|---|---|---|---|---|
export-artifact-andlist |
critical | failed (KI-001 driver) | 0 | 0 | 0 | 0 | 0/12 | 25 | 2:01 |
import-cluster |
critical | complete | 3 | 1 | 2 | 0 | 8/8 | 56 | 6:06 |
admin-fields-cluster |
high | failed (auth) | 0 | 1 | 0 | 0 | 8/8 | 38 | 4:05 |
conditional-validation-cluster |
high | complete | 1 | 3 | 0 | 1 | 7/8 | 47 | 4:59 |
order-email-cluster |
high | complete | 2 | 2 | 1 | 1 | 8/8 | 48 | 4:46 |
| Totals | 6 | 7 | 3 | 2 | 214 |
| # | Planted issue | Verdict | Matched to |
|---|---|---|---|
| 1 | Date picker class mismatch (.mce-date-picker vs .mce-datepicker) |
missed | save-persistence blockage prevented checkout reach |
| 2 | Position badges don't update after drag | missed | admin-fields-cluster auth failure (0 flows) — same miss as Pilot 8 |
| 3 | Conditional logic only evaluates on page load (no change-event) | missed | admin-fields-cluster failed; conditional-validation-cluster filed H2 as Question — empirical probe blocked by save-persistence |
| 4 | Wrong validation error message (always "is required") | missed | admin-fields-cluster failed; source evidence existed in hypotheses_status notes but not filed as Problem |
| 5 | Import appends via array_merge (no dedup) |
caught-exact | import-cluster [major] — empirical 50→100 field count; class-mce-import-export.php:43-44 identified |
| 6 | Orphaned _mce_* postmeta when field removed |
missed | order placement blocked; field-save broken |
| 7 | Import AJAX handler lacks current_user_can() |
caught-semantically | import-cluster [major] — import handler nonce-only; export has cap check, import doesn't. Regression reversal from Pilot 8 (b6-aggregate drift corrected) |
| 8 | Custom fields absent from Customer Completed Order email | missed | order-email-cluster blocked from order placement |
| 9 | Custom-select fields not keyboard accessible | missed | no session reached checkout frontend |
| 10 | HTML-entity round-trip corruption on JSON export | missed | export-artifact-andlist KI-001 failure (0 flows) — same miss as Pilot 8, different failure mode |
3/10 strict. 7 misses. Environment failures (2 session failures + save-persistence blockage) account for all 7 missed issues.
| Severity | Finding | Session |
|---|---|---|
| CRITICAL | Stored XSS in checkout field labels via import — json_decode → array_merge → update_option with zero per-field sanitization; bypasses sanitize_text_field on normal save path |
import-cluster |
| MAJOR | Custom checkout fields completely absent on WooCommerce block-based checkout (WC 8.2+ default); plugin only hooks woocommerce_checkout_fields (classic API), no Store API extension |
conditional-validation-cluster |
| MAJOR | Field configuration does not persist after Save Fields — mce_fields option never set; CLI returns "Option not found" |
order-email-cluster |
| MAJOR | Unbounded field growth on repeated imports — array_merge($existing, $import) with no dedup or count cap; likely autoloaded |
import-cluster |
| MINOR | PHP Warning: Undefined array key itemmeta from SQLite integration on checkout page |
order-email-cluster |
Two environmental session failures dominated the recall gap:
-
export-artifact-andlist— Playwright CLI EINVAL (KI-001: macOS Unix socket path > 104 chars on deeply nested Studio path). Third consecutive occurrence across Pilot 17b/17c/18. No re-dispatch rule currently enforced. -
admin-fields-cluster— Browser auth failure + WP-CLI Phar signature error. Studio+SQLite+WooCommerce stack instability (same integration that produceditemmetaPHP warning). Tester exhausted 8-turn budget on env debugging instead of writingstatus: failedearly.
Save-persistence blockage was the run's "big bug subsumes small bugs" cascade: field-save broken → checkout doesn't render custom fields → order can't be placed → email can't be tested → 5 planted issues unreachable from any session.
Three proposed changes (none are new probe-class amendments):
| # | Change | Target file | New? |
|---|---|---|---|
| 1 | Tester turn-budget-triage gate: write status: failed after 2-3 env-recovery turns |
.claude/agents/tester.md |
New rule |
| 2 | Manager driver-failure re-dispatch: KI-001 → re-dispatch with fallback driver | .claude/commands/test-plugin.md Phase 4 |
Extension |
| 3 | Source-pattern Problem when empirical probe blocked: visible source defect → file Problem (confidence ≤ 0.8) even if probe can't run | skills/tester-mindset/SKILL.md |
Extension of c2 |
Positive signal — Issue 7 regression reversal: Pilot 8 missed the import AJAX capability check (b6-aggregate drift — Tester scored the admin-post.php handler Y and didn't separately verify the AJAX handler). Haiku import-cluster Tester correctly identified the per-handler gap in this pilot. b6-per-handler tightening is working.
From Agent tool return values (most reliable; token-usage.json window overlapped with prior magellan-pay pilots running in the same Claude Code session).
| Phase | Subagent | Model | Total tokens | Tool uses | Duration |
|---|---|---|---|---|---|
| Phase 1.5 | planner-sonnet (static analysis) | Sonnet 4.6 | 55,000 | 23 | 2:22 |
| Phase 2 | tester-haiku (recon) | Haiku 4.5 | 68,078 | 24 | 4:27 |
| Phase 3 | planner-sonnet (charter gen) | Sonnet 4.6 | 96,961 | 22 | 7:36 |
| Phase 4 | tester-haiku × 5 | Haiku 4.5 | 474,920 | 214 | ~22m wave |
| Phase 5.5 | general-purpose (classifier) | Sonnet 4.6 | 74,400 | 14 | 2:26 |
| Total subagents | 769,359 | 297 |
Manager (main conversation, Sonnet 4.6): 263 messages in session.
Note on cost figure: token-usage.json reports $43.79 but the window captures prior magellan-pay pilots (17b/17c/17d) that ran in the same Claude Code session earlier today. The figure is an overestimate for this run alone; actual cost for this run is lower. Agent-tool-return tokens above are the authoritative per-run figure.
- Re-run
export-artifact-andlistwithchrome-devtools-headlessdriver to get a1–a6 + a7 round-trip coverage (KI-001 workaround) - Run the 2 pending medium breadth charters (
breadth-tour-admin,breadth-tour-frontend) —magellan resume 2026-04-28T11-46-58_magellan-checkout-editor - Ship amendment: driver-failure re-dispatch rule in
.claude/commands/test-plugin.md— KI-001 has appeared in 3 consecutive pilots - Fix plugin bug (if evaluating real): field-save persistence broken — entire plugin non-functional for basic use case
- Fix critical XSS: import handler must apply
sanitize_text_fieldper field, same as the save handler