Magellan Pilot 17b — magellan-pay run metrics (Sonnet Manager + Sonnet Planner + Haiku Testers)

pilot-17b-magellan-pay-metrics.md

Magellan Pilot 17b — magellan-pay run metrics

Stack: Sonnet 4.6 Manager · Sonnet 4.6 Planner · Haiku 4.5 Testers
Run ID: 2026-04-28T08-59-25_magellan-pay
Plugin: magellan-pay v1.0.0 (WooCommerce sandbox payment gateway, 10 planted bugs)
Driver: playwright-cli-headless (2 charters re-dispatched via chrome-devtools-headless — KI-001)

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Wall clock

Phase	Duration
Phase 0–1 (deps + mission intake)	~2 min
Phase 1.5 + Phase 2 (static analysis + recon, concurrent)	~5 min
Phase 3 (charter generation)	~2 min
Phase 4 wave — initial 6 charters (parallel)	~9 min
Phase 4b — 2× r2 re-dispatches (KI-001 workaround)	~11 min
Phase 5 (aggregation → final-report)	~2 min
/meta-review	~4 min
/meta-review supplementary re-dispatch (breadth-tour-admin)	~3 min
Total end-to-end	37 min

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Charters

Charter	Priority	Status	Tool uses	Duration	P / Q / I / Pr
payment-destructive-andlist	critical	complete	50	6m 04s	3 / 1 / 4 / 1
refund-destructive-andlist	critical	FAILED (KI-001)	15	2m 24s	—
gateway-settings-cluster	high	FAILED (KI-001)	21	2m 32s	—
checkout-validation-cluster	high	complete	47	8m 34s	2 / 2 / 3 / 0
transaction-log-cluster	high	complete	61	4m 38s	4 / 1 / 0 / 1
breadth-tour-checkout	critical	complete	40	7m 08s	2 / 2 / 3 / 2
refund-destructive-andlist-r2	critical	complete (chrome-devtools)	44	10m 34s	4 / 2 / 0 / 0
gateway-settings-cluster-r2	high	complete (chrome-devtools)	59	10m 05s	1 / 0 / 1 / 3
breadth-tour-admin	medium	complete (supplementary, post-meta-review)	44	3m 27s	1 / 0 / 1 / 0
Totals		7 complete · 2 failed	381		17 / 8 / 12 / 7

KI-001: macOS Unix socket path > 104 chars → playwright-cli EINVAL on deeply nested Studio site directories.

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PQIP findings

Severity	Count
Problems — critical	4
Problems — major	11
Problems — minor	2
Problems total	17
Questions	8
Improvements	12
Praises	7
Total findings	44

Top 4 critical problems

1. Stock reduced before payment confirmation — wc_reduce_stock_levels() called before gateway API; not restored on failure. (Planted Issue 8)
2. process_refund() always returns true — unconditional return true at line 159; no amount, state, or capability validation. (Root cause of planted Issue 3 + bonus Issues below)
3. Excessive refund ($9999.99) silently accepted on $25 order — financial compliance failure. (Planted Issues 3/bonus)
4. Magellan Pay fields missing from classic shortcode checkout — checkout page renders as cart; payment form absent. (Bonus finding, confidence 0.90 — possible test-automation artifact, flagged for human review)

9 bonus findings not in answer key

Block-checkout incompatibility (WC Store API payment method not registered), HPOS-incompatible legacy order URLs (post.php vs wc-orders), duplicate refund succeeds with no guard, full refund logs $0.00 instead of order total, missing lifecycle hooks (register_uninstall_hook), unprepared get_count() SQL, unescaped transaction ID output, API keys plaintext in HTML source (caught-exact for planted Issue 7).

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Token consumption

By tier

Tier	Tokens	Notes
Input (fresh)	20,042	Actual new prompt tokens
Output	246,999
Cache write (5 min)	3,436,910	Haiku + Sonnet subagents
Cache write (1 hr)	784,762	Manager Sonnet + Opus residual
Cache read	78,421,527	Dominant cost driver (~52% of spend)

By agent / model

Agent	Model	Messages	Input	Output	Cache write	Cache read	Cost
Manager	Sonnet 4.6	118	9,484	73,018	766,364 (1h)	14,225,357	$9.99
Manager (early turns)	Opus 4.7	12	42	10,218	18,398 (1h)	3,101,748	$1.99
Manager subtotal		130	9,526	83,236	784,762	17,327,105	$11.98
Recon scout	Sonnet 4.6	82	86	10,500	166,325 (5m)	5,556,348	$2.45
Planner-sonnet (static analysis)	Sonnet 4.6	31	39	7,157	133,112 (5m)	928,636	$0.89
Planner-sonnet (charters)	Sonnet 4.6	22	32	22,352	228,136 (5m)	898,928	$1.46
Meta-reviewer	Sonnet 4.6	22	30	6,045	168,554 (5m)	643,587	$0.92
Sonnet subagents subtotal		157	187	46,054	696,127	8,027,499	$5.72
payment-destructive-andlist	Haiku 4.5	93	340	19,012	242,356 (5m)	6,481,601	$1.05
refund-destructive-andlist (FAILED)	Haiku 4.5	30	8,580	4,529	67,727 (5m)	1,627,555	$0.28
gateway-settings-cluster (FAILED)	Haiku 4.5	39	170	4,975	71,781 (5m)	2,174,595	$0.33
checkout-validation-cluster	Haiku 4.5	91	94	22,596	110,491 (5m)	5,666,825	$0.82
transaction-log-cluster	Haiku 4.5	99	265	12,749	298,235 (5m)	9,711,495	$1.41
breadth-tour-checkout	Haiku 4.5	77	124	18,076	197,839 (5m)	5,569,093	$0.89
refund-destructive-andlist-r2	Haiku 4.5	84	327	12,314	421,680 (5m)	7,484,677	$1.34
gateway-settings-cluster-r2	Haiku 4.5	114	265	12,590	244,884 (5m)	8,196,594	$1.19
breadth-tour-admin (supplementary)	Haiku 4.5	79	164	10,868	301,028 (5m)	6,154,488	$1.05
Haiku subagents subtotal		706	10,329	117,709	1,956,021	53,066,923	$8.36
Grand total		993	20,042	246,999	3,436,910	78,421,527	$26.04

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Cost breakdown

Category	USD
Manager (Sonnet 4.6 + early Opus 4.7)	$11.98 (46%)
Sonnet subagents (recon + planners + meta-reviewer)	$5.72 (22%)
Haiku Testers (7 complete + 2 failed)	$8.36 (32%)
Total	$26.04

Cost efficiency metric	Value
Cost per planted bug caught (6/10)	$4.34
Cost per bonus finding	$2.89
Cost per any bug (6 planted + 9 bonus)	$1.74
Cost per PQIP finding (44 total)	$0.59

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Escape analysis (recall vs planted answer key)

#	Issue	Severity	Verdict
1	No test mode indicator on checkout	Easy / UI	missed
2	Transaction log has no pagination	Easy / UI	caught-semantically
3	Refund button works for wrong gateway	Medium / Logic	caught-semantically
4	Test mode toggle doesn't clear/separate API keys	Medium / Logic	missed
5	Float rounding errors on transaction amounts	Medium / Data	caught-exact
6	Empty API key saves silently in live mode	Medium / UX	missed
7	API keys visible in page source as plain text	Hard / Security	caught-exact
8	Stock reduced before payment confirmation	Hard / Logic	caught-exact
9	Zero-total orders sent to gateway	Hard / Edge Case	missed
10	Double-click creates duplicate orders	Hard / Race Condition	caught-semantically (source-inspection, no empirical probe)

Recall: 6/10 (60%)

Miss root causes

Issue	Root cause class	Proposed amendment
1 (no test-mode badge)	Absence-of-feature blind spot	Mode-state visibility probe — verify every mode-affected surface shows a visible indicator
4 (shared API keys across modes)	Single-feature bias	Configuration-toggle × dependent-fields — enter values, switch toggle, assert per-mode storage
6 (empty keys save silently)	Absence-of-feature blind spot	Required-field validation absence probe — extends Amendment 2 to admin credentials forms
9 (zero-total to gateway)	Data-state bias	Payment amount edge-state probe — zero-total, fractional-cent, very large amount — extends Amendment B

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Notes

• KI-001 workaround worked: both r2 re-dispatches completed cleanly with chrome-devtools-headless.
• Checkout critical finding (Problem 4) has confidence 0.90 — may be a test-automation artifact (classic checkout page may not have been properly set up). Flagged for human verification.
• Issue 10 (double-click race condition) caught semantically but only via source inspection; Amendment I (empirical-probe-mandatory) continues to leak on rapid-double-submit — third occurrence of this drift pattern, reinforcement candidate.
• c2 Reinforcement 3 (scale-sensitive source-pattern) may not have fully closed the pagination-as-scale framing; Issue 2 caught semantically rather than as a dedicated pagination-UX problem.