ui/phase-22: races table with stance toggle and vote slot

Adds the Races View in the in-game shell. The table lists every
non-extinct other race with tech levels (percent), totals,
planets, votes received, and a per-row WAR | PEACE segmented
control. A single vote-recipient slot above the table queues a
`CommandRaceVote`; per-row buttons queue `CommandRaceRelation`.
Both commands flow through the existing order draft store with
collapse-by-acceptor (stance) and singleton (vote) rules.

`GameReport` widens with `races`, `myVotes`, `myVoteFor`; the
decoder walks `report.player[]` once for the richer projection.
The optimistic overlay flips stance and vote target immediately;
`votesReceived`, `myVotes`, and the alliance summary stay
server-authoritative — alliance grouping and the 2/3 victory
check are tallied on the server at turn cutoff and explicitly
not surfaced client-side (`rules.txt` keeps foreign races'
outgoing vote targets private).

Includes Vitest component coverage of stance and vote
collapse rules + a Playwright e2e that drives both commands
through the dispatcher route and verifies the gateway saw the
expected `CommandRaceRelation` / `CommandRaceVote` payloads.

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

ui/frontend/src/lib/sidebar/order-tab.svelte

@@ -126,6 +126,15 @@ Tests exercise the tab through `__galaxyDebug.seedOrderDraft`
 					group: shortGroupId(cmd.groupId),
 					fleet: cmd.name,
 				});
+			case "setDiplomaticStance":
+				return i18n.t("game.sidebar.order.label.race_relation", {
+					relation: cmd.relation,
+					acceptor: cmd.acceptor,
+				});
+			case "setVoteRecipient":
+				return i18n.t("game.sidebar.order.label.race_vote", {
+					acceptor: cmd.acceptor,
+				});
 		}
 	}