feat(model+ui): F8-05 — race on OtherGroup, real attribution + N×M label

Issue #48 п.32 ("Stationed ship groups") shipped with a fragile race
fallback: when a foreign group sat on a non-`other`-kind planet the
inspector printed a generic "foreign" label, which collapsed the
race dropdown to a single uninformative bucket. The engine FBS
contract did not carry per-group race either, so live games hit the
same gap. This patch carries race authoritatively from the engine
through every layer down to the inspector.

Wire format & engine
- `pkg/schema/fbs/report.fbs`: add `race:string` to `OtherGroup` and
  `LocalGroup` (additive — old clients ignore).
- `pkg/schema/fbs/report/`: regenerated Go bindings.
- `ui/frontend/src/proto/galaxy/fbs/report/`: regenerated TS bindings.
- `pkg/model/report.OtherGroup.Race`: new field; carried through
  `LocalGroup` via the embedded `OtherGroup`.
- `pkg/transcoder/report.go`: encode + decode `race` on both
  `LocalGroup` and `OtherGroup`.
- `game/internal/controller/report.go.otherGroup`: set `v.Race`
  from `c.g.Race[c.RaceIndex(sg.OwnerID)].Name` so every emitted
  group — own or foreign — carries the resolved race name.

Legacy parser
- `tools/local-dev/legacy-report/parser.go`: capture the
  `<Race> Groups` header into `pendingOtherGroup.race`, fill local
  group `Race` from `p.rep.Race`, propagate both into the
  `report.OtherGroup` rows.
- Tests + smoke counts updated; regenerated `KNNTS{039,041}.json`
  fixtures so the synthetic loader carries the new field.

UI
- `ui/frontend/src/api/`: `ReportShipGroupBase.race` field;
  synthetic loader + FBS decoder populate it.
- `ui/frontend/src/lib/inspectors/planet/ship-groups.svelte`: the
  stationed-groups inspector picks race directly from
  `group.race` (own falls back to `localRace`, both finally to the
  `race.unknown` placeholder). The planet-owner / "foreign"
  heuristic is gone.
- Row label changes from "N ships mass M" to a compact
  `<class>` | `<N ×>` | `<mass>` three-column layout: the count
  cell is right-aligned tabular, the mass cell is right-aligned
  monospace + tabular, matching the inspector / calculator number
  conventions. Stale i18n keys removed
  (`ship_groups.row.count`, `.row.mass`, `.race.foreign`).
- All affected unit tests (8 files) carry the new `race` field.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

pkg/schema/fbs/report/LocalGroup.go

@@ -194,8 +194,16 @@ func (rcv *LocalGroup) Fleet() []byte {
 	return nil
 }
 
+func (rcv *LocalGroup) Race() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(30))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
 func LocalGroupStart(builder *flatbuffers.Builder) {
-	builder.StartObject(13)
+	builder.StartObject(14)
 }
 func LocalGroupAddNumber(builder *flatbuffers.Builder, number uint64) {
 	builder.PrependUint64Slot(0, number, 0)
@@ -241,6 +249,9 @@ func LocalGroupAddState(builder *flatbuffers.Builder, state flatbuffers.UOffsetT
 func LocalGroupAddFleet(builder *flatbuffers.Builder, fleet flatbuffers.UOffsetT) {
 	builder.PrependUOffsetTSlot(12, flatbuffers.UOffsetT(fleet), 0)
 }
+func LocalGroupAddRace(builder *flatbuffers.Builder, race flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(13, flatbuffers.UOffsetT(race), 0)
+}
 func LocalGroupEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
 	return builder.EndObject()
 }