Record the Making Vinyl feedback on traceability

Most people the team talked to in Haarlem were strongly interested in the
full-traceability approach. For Sibert it was one of the reasons to talk to
us at all; without it their representative would strongly advise against
the plan, and seeing buildfor.life's development and data work convinced
him the project comes from the right direction.

Exhibitor briefing gets an "After the show" section (feedback, what has
been filed since); traceability.md opens with the market signal; roadmap
item 1 notes it as supply-side evidence, with buyer prices still missing;
README project status updated (show attended, Payap lead).

README.md

@@ -42,13 +42,20 @@ steps are open planning items.
 
 ## Project Status
 
-**Planning stage** (as of mid-2026).
+**Planning stage** (as of October 2026).
 
 - Industry outreach has been ongoing for several years: equipment vendors,
   material suppliers, and independent consultants.
-- Alexander and Simona will soon travel to
-  [Making Vinyl](https://makingvinyl.com/) in Haarlem, Netherlands, to gather
-  further insights from the pressing industry.
+- Alexander and Simona attended
+  [Making Vinyl Europe 2026](https://makingvinyl.com/) in Haarlem (30
+  September to 2 October). Most people they talked to were strongly
+  interested in the full-traceability approach, and for Sibert it was a
+  reason to engage at all (notes in the
+  [exhibitor briefing](docs/suppliers/making-vinyl-europe-2026-exhibitors.md#after-the-show)).
+- Payap University (Chiang Mai) has offered land on lease and wants to
+  build joint student programmes with the plant
+  ([site candidates](docs/site-candidates.md),
+  [Payap partnership](docs/payap-partnership.md)).
 - A collaboration with [ResurRec](https://www.resurrec.com/) is under
   discussion.
 

docs/roadmap.md

@@ -17,7 +17,11 @@ These three run in parallel and gate everything downstream:
    recorded in the revenue model. The prices disagree with the model on
    per-title services and run size; the tour showed no plating and no
    HVAC anywhere in the incumbent's operation, which is the strongest
-   argument yet for pulling galvanics forward from Phase 5. Carry the
+   argument yet for pulling galvanics forward from Phase 5. Making Vinyl
+   Europe 2026 added supply-side evidence (strong interest in the
+   traceability approach, see the
+   [exhibitor briefing](suppliers/making-vinyl-europe-2026-exhibitors.md#after-the-show)),
+   but no buyer prices yet. Carry the
    open run-size question into these conversations. The
    [artist platform](artist-platform.md)'s price calculator, published
    early with indicative prices and an interest list but no payments,

docs/suppliers/making-vinyl-europe-2026-exhibitors.md

@@ -11,6 +11,24 @@ Company facts are from vendor sites and the Making Vinyl channels, checked
 are written against this repo's open items (roadmap Phase 1 quotes, the
 traceability spec, the steam decision, the Thai PVC lead, the 50/50 fleet).
 
+## After the show
+
+- **Traceability drew the strongest reaction.** Most people Alexander
+  talked to in Haarlem were very interested in the plan's full traceability
+  ([traceability](../traceability.md), [digital factory](../digital-factory.md)).
+- **Sibert**: traceability was one of the reasons Sibert's representative
+  was willing to talk to us at all; without it he would strongly advise
+  against the plan. Seeing buildfor.life's software development and data
+  work made it clear to him that the project comes from the right
+  direction. For the pitch to suppliers and investors, the data and
+  control side is what makes a newcomer credible, so it leads.
+- **Filed since**: the Newbilt flyers
+  ([pressing line](../equipment/pressing-line.md)), Sibert's VS
+  specifications and Pheenix Alpha's electroforming flyers
+  ([galvanics and stamper prep](../equipment/galvanics.md)).
+
+The briefing below is kept as written before the show.
+
 ## Priority order for the three days
 
 1. **Newbilt** and **Pheenix Alpha**: the pressing-line decision. Both must

docs/traceability.md

@@ -5,6 +5,13 @@ traceable end to end for the customer. This is a set requirement, and it is
 the core specification for the factory software this repository will
 eventually host.
 
+It is also the part of the plan the industry responds to. At Making Vinyl
+Europe 2026 most people the team talked to were strongly interested in it,
+and Sibert's representative named it as a reason to work with a newcomer
+he would otherwise have advised against building a plant; buildfor.life's
+development and data work settled the question for him (see the
+[exhibitor briefing](suppliers/making-vinyl-europe-2026-exhibitors.md#after-the-show)).
+
 ## What a customer can trace
 
 For any order, the customer can follow the full chain: