Press hall: five Duplex bays and four Classic positions (balanced at 60 % specials)

User (October 2026): "change the hall layout" after the finding that the
60/40 floor split leaves the Classics about half loaded at 60 %+
specials (specials run only on the Duplex systems).

- Press hall now keeps five Duplex bays (four along the visitor
  corridor, the fifth at the head of the second row) and four Classic
  positions: 550 + 200 = ~750 m2 of ~870 m2, ~73/27 by floor, 10 to 4 by
  presses; launch plant fills one of each, growth adds Duplex first.
- Full hall: ~2.9 to 4.4M records a year at 60 % specials, Classics ~80
  to 100 % loaded (60/40 gave ~2.3 to 3.6M); ~3.2 to 4.4M at ~20 %;
  fourteen presses as before: ~2.1 to 2.5 t/h steam, up to ~1.8 MW
  cooling, a utility phase of its own.
- pressing-line.md, scale.md, site-candidates.md, crane-workshop-tours.md,
  roadmap.md, README (FreeCAD model still the earlier layout, not
  redrawn); calculator preset "Full hall (5 D + 4 C)" and ladder; plant
  view reserves 5 Duplex bays and 4 Classic positions; business plan
  draft 0.2 rebuilt.

Checks: renderer 720 checks and functional checks pass, calculator
regression 0 fails, level checks clean; PDF 47 pages, TOC filled.

docs/site-candidates.md

@@ -122,8 +122,8 @@ dropped. Source record with the zone's full rules and annex:
 5. **Plot fit.** Shape and size against the 60 × 25 m building, the
    detached utility yard and the phase 2 footprint (6 to 8 rai). The
    Payap scenario model below needs a 150 m square (14.1 rai) as drawn,
-   with a press hall laid out 60/40 for Duplex systems, a colour store and
-   a reserve.
+   with a press hall laid out for Duplex systems, a colour store and a
+   reserve.
 6. **Galvanics on a campus.** Phase 5 electroplating needs the lessor's
    written consent; the zero-discharge design
    ([sustainability](sustainability.md)) becomes a lease condition, not
@@ -180,12 +180,13 @@ and every equipment envelope is an estimate.
     that special designs need, about 100 positions on four levels
     (estimate), with weighing and mixing and a vacuum conveying station
     ([pressing line](equipment/pressing-line.md)).
-  - **Press hall** (~870 m²), laid out 60/40 by floor for Duplex systems
-    because the plant focuses on special pressings (October 2026,
-    [pressing line](equipment/pressing-line.md)): four Duplex bays, each
-    for two HRP 12 presses with an EX 50 and an EX 35, along the visitor
-    corridor, and six Classic positions in the second row; the launch
-    plant fills one of each. The FreeCAD model still draws the earlier
+  - **Press hall** (~870 m²), laid out for Duplex systems because the
+    plant focuses on special pressings (October 2026, ~73/27 by floor,
+    [pressing line](equipment/pressing-line.md)): five Duplex bays, each
+    for two HRP 12 presses with an EX 50 and an EX 35, four of them along
+    the visitor corridor and the fifth at the head of the second row,
+    followed by four Classic positions; the launch plant fills one of
+    each. The FreeCAD model still draws the earlier
     layout (two Duplex systems, the Classic and ten more Classic
     positions). Each Duplex is one operator's cell of about
     5 × 3 m at Newbilt's machine sizes: presses either side turned