feat(players): NPC disposition types and launch-with-players session tokens

Add Hostile/Neutral/Friendly ring types with session-only inactive overrides on control, plus launch-with-players flow and live player tokens on the map.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/main/players/scenePlayerTokensSessionStore.test.ts

@@ -0,0 +1,39 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+
+import { ScenePlayerTokensSessionStore } from './scenePlayerTokensSessionStore';
+
+void test('ScenePlayerTokensSessionStore selection and show/hide', () => {
+  const store = new ScenePlayerTokensSessionStore();
+  store.dispatch({ kind: 'setSelection', playerIds: ['a', 'b', 'a'] });
+  assert.deepEqual(store.getState().selectedPlayerIds, ['a', 'b']);
+  assert.equal(store.getState().visible, false);
+
+  store.dispatch({ kind: 'show', sizeN: 0.08 });
+  assert.equal(store.getState().visible, true);
+  assert.equal(Object.keys(store.getState().byPlayerId).length, 2);
+  assert.ok(store.getState().byPlayerId.a);
+  assert.equal(store.getState().byPlayerId.a?.ny, 0.88);
+
+  store.dispatch({ kind: 'setVisible', visible: false });
+  assert.equal(store.getState().visible, false);
+  assert.ok(store.getState().byPlayerId.a);
+
+  store.dispatch({ kind: 'clearPlacements' });
+  assert.equal(store.getState().visible, false);
+  assert.deepEqual(store.getState().byPlayerId, {});
+  assert.deepEqual(store.getState().selectedPlayerIds, ['a', 'b']);
+});
+
+void test('ScenePlayerTokensSessionStore move and reset', () => {
+  const store = new ScenePlayerTokensSessionStore();
+  store.dispatch({ kind: 'setSelection', playerIds: ['p1'] });
+  store.dispatch({ kind: 'show', sizeN: 0.1 });
+  const s1 = store.dispatch({ kind: 'move', playerId: 'p1', nx: 0.3, ny: 0.4 });
+  assert.equal(s1.byPlayerId.p1?.nx, 0.3);
+  assert.equal(s1.byPlayerId.p1?.ny, 0.4);
+  const s2 = store.reset();
+  assert.deepEqual(s2.selectedPlayerIds, []);
+  assert.equal(s2.visible, false);
+  assert.deepEqual(s2.byPlayerId, {});
+});