Compound storage for tens of colours; stamper prep open to galvanics

User, October 2026: special designs will need tens of colours, so the
compound store needs far more space, with maybe a few silos for black and
the standard colours; and the wall between stamper prep and galvanics is
to go.

- pressing-line: "Compound storage" bullet (colour store with pallet
  racking, ~100 positions in the Payap model, estimate; outdoor silos
  proposed; compound stays on the ground floor, ~160 to 270 t a year at
  the mature fleet; sacks vs big bags decides the silo filling).
- galvanics: stamper prep open to galvanics, one clean zone.

docs/equipment/galvanics.md

@@ -94,6 +94,10 @@ What this changes in the plan:
   chemical day store at the duct head. The
   [Payap scenario model](../site-candidates.md#payap-scenario-model-october-2026) draws it as a 12 × 10 m building
   (estimate).
+- **Stamper prep open to galvanics (October 2026).** No wall between the
+  galvanics room and stamper prep: stampers go from the last bath straight
+  to the Sibert line inside one clean zone, as the
+  [Payap scenario model](../site-candidates.md#payap-scenario-model-october-2026) draws it.
 - **Space.** One of each unit is ~5.6 m² of footprint (PASU 1.56, PMPB
   1.23, PPPU 1.32, PDPU 1.44 m²), plus 500 mm service access behind the two
   tank units and working space around them: comfortably inside the 80 to

docs/equipment/pressing-line.md

@@ -138,6 +138,21 @@ What this changes in the plan:
   Classic at 28 s makes about 128 records/h, so roughly 2.5 to 5 kg/h of
   trim per press (estimate): one Granulator 400 at 200 to 250 kg/h runs in
   short batches, not continuously.
+- **Compound storage (October 2026).** Special designs will run in tens
+  of colours, so the compound store is sized for them:
+  - a colour store with pallet racking next to the regrind and conveying
+    room: about 100 pallet positions on four levels in the
+    [Payap scenario model](../site-candidates.md#payap-scenario-model-october-2026) (estimate);
+  - a few outdoor silos (proposed) for black and the standard colours,
+    filled from big bags or by bulk truck and conveyed to the extruders.
+
+  Compound is the heaviest material in the plant (~160 to 270 t a year at
+  the mature fleet: 1.0 to 1.5 million records at roughly 160 to 180 g
+  each with trim), so it
+  stays on the ground floor. The compound suppliers' answer on 25 kg sacks
+  versus big bags
+  ([Making Vinyl briefing](../suppliers/making-vinyl-europe-2026-exhibitors.md))
+  decides how the silos are filled.
 - **Hydraulics.** One central hydraulic supply for several systems is an
   option on the flyer and is now the plan, together with one shared
   compressed-air supply (see "Current plan" above); it changes the