ui/phase-15: planet inspector production controls + order-draft collapse

Adds the second end-to-end command (`setProductionType`) with a
collapse-by-`planetNumber` rule on the order draft, the segmented
production-controls component on the planet inspector, the FBS
encoder/decoder pair for `CommandPlanetProduce`, and the
`localShipClass` projection on `GameReport`. Forecast number is
deferred and tracked in the new `ui/docs/calc-bridge.md`.

ui/frontend/tests/e2e/fixtures/report-fbs.ts

@@ -8,8 +8,11 @@
 // fixture with the optional rich planet fields (size, resources,
 // stockpiles, population, industry, colonists, production, free
 // industry) so the inspector e2e can drive the read-only display
-// against realistic values. Later phases extend the helper as ships,
-// fleets, sciences, etc. land.
+// against realistic values. Phase 15 adds a minimal `LocalShipClass`
+// projection so the planet inspector's Build-Ship sub-picker has data
+// in e2e specs (`name` only — Phase 17 widens this when ship-class
+// CRUD lands). Later phases extend the helper as fleets, sciences,
+// etc. land.
 
 import { Builder } from "flatbuffers";
 
@@ -17,6 +20,7 @@ import {
 	LocalPlanet,
 	OtherPlanet,
 	Report,
+	ShipClass,
 	UnidentifiedPlanet,
 	UninhabitedPlanet,
 } from "../../../src/proto/galaxy/fbs/report";
@@ -44,6 +48,10 @@ export interface OtherPlanetFixture extends InhabitedFixture {
 	owner: string;
 }
 
+export interface ShipClassFixture {
+	name: string;
+}
+
 export interface ReportFixture {
 	turn: number;
 	mapWidth?: number;
@@ -52,6 +60,7 @@ export interface ReportFixture {
 	otherPlanets?: OtherPlanetFixture[];
 	uninhabitedPlanets?: PlanetFixture[];
 	unidentifiedPlanets?: { number: number; x: number; y: number }[];
+	localShipClass?: ShipClassFixture[];
 }
 
 export function buildReportPayload(fixture: ReportFixture): Uint8Array {
@@ -131,6 +140,13 @@ export function buildReportPayload(fixture: ReportFixture): Uint8Array {
 		},
 	);
 
+	const localShipClassOffsets = (fixture.localShipClass ?? []).map((cls) => {
+		const name = builder.createString(cls.name);
+		ShipClass.startShipClass(builder);
+		ShipClass.addName(builder, name);
+		return ShipClass.endShipClass(builder);
+	});
+
 	const localVec =
 		localOffsets.length === 0
 			? null
@@ -147,6 +163,10 @@ export function buildReportPayload(fixture: ReportFixture): Uint8Array {
 		unidentifiedOffsets.length === 0
 			? null
 			: Report.createUnidentifiedPlanetVector(builder, unidentifiedOffsets);
+	const localShipClassVec =
+		localShipClassOffsets.length === 0
+			? null
+			: Report.createLocalShipClassVector(builder, localShipClassOffsets);
 
 	const totalPlanets =
 		(fixture.localPlanets ?? []).length +
@@ -163,6 +183,8 @@ export function buildReportPayload(fixture: ReportFixture): Uint8Array {
 	if (otherVec !== null) Report.addOtherPlanet(builder, otherVec);
 	if (uninhabitedVec !== null) Report.addUninhabitedPlanet(builder, uninhabitedVec);
 	if (unidentifiedVec !== null) Report.addUnidentifiedPlanet(builder, unidentifiedVec);
+	if (localShipClassVec !== null)
+		Report.addLocalShipClass(builder, localShipClassVec);
 	const reportOff = Report.endReport(builder);
 	builder.finish(reportOff);
 	return builder.asUint8Array();