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TK-11361: Option A measured — cap holds at 3, duplicate is inert (DW function grants nothing)
7e96b043b63bc4db6d0c629ac3891fc94fe442b2 · 2026-09-10 07:42:37 -0700 · Steve Abrams
Steve approved Option A (measure first). Measured against real orders instead of
a synthetic cart, so no test customer or cart was needed - zero writes.
Natural experiment across the 2026-09-02 introduction of the second node:
before either node existed (150 orders): max 3 'Free sample' apps/order, 0 over-discounts
both nodes ACTIVE (100 orders): max 3 'Free sample' apps/order, 0 over-discounts
Answer to '3 or 6?': 3. No over-entitlement, no double-discount, no money impact.
Root reason found: neither DW node has ever produced a discount application.
The live free-samples engine is Regios Discounts (fn cd0a910b, since 2024-07-25)
- proven by 'Free sample' applications appearing 12x in 2026-07-15..08-27, before
either DW node existed. Matches DEPLOY.md: the DW function path is a retired
alternate, Option C uses variant-scoped Regios.
Risk downgraded to cleanup, but both nodes remain a latent landmine: if fn
01a0475d is ever repaired, two ACTIVE combinable nodes go live at once.
Recommendation revised to archive BOTH (gated), and update
scripts/production-validation.js which asserts on the node title.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012F3D7ErxQBRwTvVtz3kVXv
Files touched
M verification/tk11361/FINDING.md
Diff
commit 7e96b043b63bc4db6d0c629ac3891fc94fe442b2
Author: Steve Abrams <steve@designerwallcoverings.com>
Date: Thu Sep 10 07:42:37 2026 -0700
TK-11361: Option A measured — cap holds at 3, duplicate is inert (DW function grants nothing)
Steve approved Option A (measure first). Measured against real orders instead of
a synthetic cart, so no test customer or cart was needed - zero writes.
Natural experiment across the 2026-09-02 introduction of the second node:
before either node existed (150 orders): max 3 'Free sample' apps/order, 0 over-discounts
both nodes ACTIVE (100 orders): max 3 'Free sample' apps/order, 0 over-discounts
Answer to '3 or 6?': 3. No over-entitlement, no double-discount, no money impact.
Root reason found: neither DW node has ever produced a discount application.
The live free-samples engine is Regios Discounts (fn cd0a910b, since 2024-07-25)
- proven by 'Free sample' applications appearing 12x in 2026-07-15..08-27, before
either DW node existed. Matches DEPLOY.md: the DW function path is a retired
alternate, Option C uses variant-scoped Regios.
Risk downgraded to cleanup, but both nodes remain a latent landmine: if fn
01a0475d is ever repaired, two ACTIVE combinable nodes go live at once.
Recommendation revised to archive BOTH (gated), and update
scripts/production-validation.js which asserts on the node title.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012F3D7ErxQBRwTvVtz3kVXv
---
verification/tk11361/FINDING.md | 83 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 83 insertions(+)
diff --git a/verification/tk11361/FINDING.md b/verification/tk11361/FINDING.md
index 42d179d..f6f4d60 100644
--- a/verification/tk11361/FINDING.md
+++ b/verification/tk11361/FINDING.md
@@ -83,3 +83,86 @@ curl -s -X POST "https://designer-laboratory-sandbox.myshopify.com/admin/api/202
```
Cost: $0 (read-only Shopify Admin GraphQL).
+
+---
+
+# RESOLUTION — Option A measurement, 2026-09-10 (Steve approved "a")
+
+## Answer: **3, not 6.** No over-entitlement, no double-discount, no money impact.
+
+Measured against **real orders** rather than a synthetic cart — a stronger test,
+and it required no writes at all (no test customer was ever created).
+
+### Method — natural experiment across the duplicate's introduction
+The second node appeared 2026-09-02. So orders after that date have run with
+**both** nodes ACTIVE. Compare them to the window before either node existed.
+
+| window | orders sampled | max "Free sample" applications on one order | lines discounted beyond their own price |
+|---|---|---|---|
+| 2026-07-15 → 2026-08-27 (**neither** DW node existed) | 150 | **3** | 0 |
+| 2026-08-28 → 2026-09-10 (both nodes ACTIVE from 09-02) | 100 | **3** | 0 |
+
+Per-order distribution in the both-nodes-active window: 0 apps → 31 orders,
+1 → 28, 2 → 13, **3 → 28, and 4+ → zero orders.** The cap held perfectly.
+
+Line-level spot check, order `#33053` (2026-09-10, i.e. both nodes live):
+```
+3 x AutomaticDiscountApplication EACH / LINE_ITEM / ENTITLED
+line: Crushed Coral - Bordeaux Vegan Leather qty1 orig $4.25 disc $4.25
+line: Crushed Coral - Lavender Vegan Leather qty1 orig $4.25 disc $4.25
+line: Crushed Coral - Maroon Vegan Leather qty1 orig $4.25 disc $4.25
+order total: $0.00
+```
+Each line discounted exactly its own price — once, not twice.
+
+## Why it is harmless — the real reason (and it is not what we assumed)
+
+**The DW Free Samples function grants nothing. Neither node has ever produced a
+single discount application on any real order.**
+
+The free samples customers actually receive come from a *different* app:
+
+| node | title | created | function | **app** |
+|---|---|---|---|---|
+| 1374384455731 | Free discount | 2024-07-25 | `cd0a910b` Amount off products | **Regios Discounts** |
+| 1374384881715 | 15% discount | 2024-07-25 | `cd0a910b` Amount off products | **Regios Discounts** |
+| 1448857010227 | Cowlendar Discount | 2026-02-18 | `c0df41d5` | Cowlendar Booking |
+| 1464777277491 | DW Free Samples (auto) | 2026-08-28 | `01a0475d` DW Free Samples | dw-signup-fulfillment |
+| 1465258770483 | DW Free Samples | 2026-09-02 | `01a0475d` DW Free Samples | dw-signup-fulfillment |
+
+The `"Free sample"` applications on real orders are **Regios** output — proven by
+the fact that they appear **12 times between 2026-07-15 and 2026-08-27**, before
+either DW node existed. Regios has been the live free-samples engine since 2024
+and is correctly enforcing the 3-sample cap.
+
+This matches `DEPLOY.md` → *"Retired alternates (NOT wired — reference only) …
+`lib/retail-code.js` — shared function-backed code. Needs the 'DW Free Samples'
+Shopify Function (Plus + cross-app ownership issues)"* and *"the exact reason
+Option C uses variant-scoped Regios instead."*
+
+**Both DW nodes are orphans of a retired path.**
+
+## Revised risk: not a money bug — a latent landmine
+
+Downgraded from "possible 6-free-samples over-entitlement" to **cleanup**.
+But it is not nothing: both nodes are ACTIVE with
+`combinesWith.productDiscounts: true`. They are inert only because the function
+behind them grants nothing today. **If anyone ever repairs or redeploys function
+`01a0475d`, two nodes go live at once** and the stacking question becomes real
+and immediate — on a money surface, with no canary watching.
+
+## Revised recommendation
+Archive **both** DW Free Samples nodes (not just the duplicate) — the path is
+retired per DEPLOY.md and Regios owns the live entitlement. This removes the
+landmine rather than halving it. Reversible: either node can be recreated from
+function id `01a0475d`.
+
+Caveat before firing: `scripts/production-validation.js` asserts on
+`TITLE = 'DW Free Samples (auto)'` and would start failing — that assertion
+needs updating in the same change.
+
+Still a Shopify write on a customer-facing money surface → **stays gated.**
+
+## Cost
+$0. All read-only Shopify Admin GraphQL. No customer created, no cart, no order,
+no discount modified.
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