Initial commit: establish deterministic rod-string solver stack.

Set up the C solver core, Node API orchestration, TS GUI workflow, and engineering documentation with cleaned repo hygiene for private Git hosting.

Made-with: Cursor

gui-ts/src/ui/tabs/PumpTab.tsx

@@ -0,0 +1,70 @@
+import type { CaseStore } from "../../state/useCaseStore";
+import { Fieldset } from "../common/Fieldset";
+import { Row } from "../common/Row";
+import { NumberField } from "../common/NumberField";
+import { SelectField } from "../common/SelectField";
+
+type Props = { store: CaseStore };
+
+export function PumpTab({ store }: Props) {
+  const { state, update } = store;
+  return (
+    <div className="tab-grid two">
+      <Fieldset legend="Pump Geometry">
+        <Row
+          label="Plunger Diameter"
+          htmlFor="plungerDiam"
+          hint="mm in base-case XML (converted to m if > 2)"
+        >
+          <NumberField
+            id="plungerDiam"
+            value={state.pumpDiameter}
+            step={0.25}
+            onChange={(v) => update("pumpDiameter", v)}
+          />
+        </Row>
+        <Row label="Pump Friction" htmlFor="pumpFric" hint="lbf (imperial)">
+          <NumberField
+            id="pumpFric"
+            value={state.pumpFriction}
+            step={10}
+            onChange={(v) => update("pumpFriction", v)}
+          />
+        </Row>
+        <Row label="Pump Intake Pressure" htmlFor="pumpIntake" hint="psi (imperial)">
+          <NumberField
+            id="pumpIntake"
+            value={state.pumpIntakePressure}
+            step={1}
+            onChange={(v) => update("pumpIntakePressure", v)}
+          />
+        </Row>
+      </Fieldset>
+
+      <Fieldset legend="Fillage">
+        <Row label="Pump Fillage Option" htmlFor="fillageOpt">
+          <SelectField
+            id="fillageOpt"
+            value={state.pumpFillageOption}
+            onChange={(v) => update("pumpFillageOption", v)}
+            options={[
+              { value: 0, label: "0 — auto" },
+              { value: 1, label: "1 — specified" },
+              { value: 2, label: "2 — incomplete fillage" }
+            ]}
+          />
+        </Row>
+        <Row label="Percent Pump Fillage (%)" htmlFor="pctFill">
+          <NumberField
+            id="pctFill"
+            value={state.percentPumpFillage}
+            step={1}
+            min={0}
+            max={100}
+            onChange={(v) => update("percentPumpFillage", v)}
+          />
+        </Row>
+      </Fieldset>
+    </div>
+  );
+}