Steam and cooling, plant operation: show the launch plant (1 Duplex + 1 Classic)

User (October 2026): "launch plant should be 1x duplex system and 1x
classic". The calculator already did; these two pages did not.

- steam-cooling.html: default case is now "Launch plant" (D1-A, D1-B,
  Classic; B-1 and B-2; CH-1 and CH-2: 450 to 540 kg/h on 1,000 kg/h,
  391.5 kW on 500 kW). Other cases: Duplex first (commissioning), Second
  Duplex (growth option, five presses), One module down (launch plant
  with B-2 and CH-2 out). Idle boxes say "reserved position" / "growth
  option". Phasing table: launch plant, second Duplex, options;
  galvanics cooling is launch scope. Five-press figures labelled as the
  growth case or backbone sizing; chiller cost per the CSV 2-module row.
- plant-operation.html: the launch plant: Classic C2 removed everywhere
  (press, trimmer, routes, conveyor, lamps, texts), Classic re-centred;
  one PDPU (2 cells) as in total-investment; boilers 2 x 500 kg/h,
  chillers 2 x 250 kW; title arrivals scaled to three presses; phone
  legend in one column.
- Landing entries and README bullets for both pages.

Verified headless (Edge): skill checks pw_sc_check and pw_plant_check
with launch-plant expectations, 90-day runs, perf unchanged; 390 / 1024
/ 1440 px dark and light without page errors or overflow.

site/public/index.html

@@ -72,9 +72,9 @@ document.documentElement.setAttribute("data-theme",t);})();
     <li>
       <a href="demos/plant-operation/">
         <strong>Plant overview (simulated SCADA)</strong>
-        <span>The mature plant animated at real cycle times: Newbilt Duplex
-        and Classic presses, Pheenix Alpha electroforming and Sibert stamper
-        prep, from PVC intake and the material lab through pressing,
+        <span>The launch plant animated at real cycle times: one Newbilt
+        Duplex system and one Classic press, Pheenix Alpha electroforming and
+        Sibert stamper prep, from PVC intake and the material lab through pressing,
         inspection, packaging and fulfillment, with the artist gates,
         utilities and energy alongside. Real time up to a day in 24 s;
         every station is clickable; on a phone, turn it sideways and pinch
@@ -97,11 +97,13 @@ document.documentElement.setAttribute("data-theme",t);})();
     <li>
       <a href="demos/steam-cooling/">
         <strong>Steam and cooling plant</strong>
-        <span>The utilities for the five-press fleet as a clickable process
-        diagram: boiler bank, steam header and condensate return, chiller
-        bank, plate heat exchanger and a branch to every press. Switch
-        between the launch press, the full fleet and one module down to see
-        demand against installed capacity.</span>
+        <span>The utilities for the launch plant (one Duplex system and one
+        Classic on two boiler and two chiller modules, rooms built for four)
+        as a clickable process diagram: boiler bank, steam header and
+        condensate return, chiller bank, plate heat exchanger and a branch to
+        every press position. Switch between the launch plant, the Duplex
+        commissioned first, the second Duplex growth option and one module
+        down to see demand against installed capacity.</span>
       </a>
     </li>
     <li>