Connect native Discovery setup and nested force paths

game/discovery-module-profile.ts

@@ -0,0 +1,45 @@
+import { FACTIONS } from './catalog';
+import type { FactionModuleProfile } from './faction-module-profile';
+
+/** Public unused-lobby admission only. The original initializer owns physical
+ * decks, tokens, leader/force inventories and all mandatory setup choices. */
+export function discoveryModuleProfile(game: FactionModuleProfile): boolean {
+  return !game.discoveries && !game.discoveryStash && !game.greatMaker &&
+    discoveryModeSupported(game);
+}
+
+/** The same roster/module contract during play; live Discovery frames are expected. */
+export function discoveryModeSupported(game: FactionModuleProfile): boolean {
+  if (typeof game.advanced !== 'boolean' || game.discoveryEnabled !== true ||
+    game.players.length < 2 || game.players.length > 6 ||
+    (game.techTokens && game.players.length < 3) || game.expansions.length > 2 ||
+    game.strongholdCards || game.leaderSkills || game.homeworlds || game.nexusCards ||
+    game.ecazTreachery ||
+    game.semutaPreview || game.advancedPreview || game.kullPreview || game.nexusKullPreview ||
+    game.guildBetrayalPreview || game.richeseBetrayalPreview ||
+    game.nexusIxianReplacementPreview || game.nexusIxianBetrayalPreview || game.nexusHarkonnenBetrayalPreview)
+    return false;
+  const e3 = game.expansions.length === 1 && game.expansions[0] === 'ecaz';
+  for (let i = 0; i < game.expansions.length; i++) {
+    const expansion = game.expansions[i];
+    if (e3 ? expansion !== 'ecaz' : expansion !== 'ix' && expansion !== 'choam') return false;
+    for (let j = 0; j < i; j++) if (game.expansions[j] === expansion) return false;
+  }
+  let native = 0, moritani = false, harkonnen = false;
+  for (let i = 0; i < game.players.length; i++) {
+    const player = game.players[i];
+    for (let j = 0; j < i; j++) if (game.players[j].faction === player.faction) return false;
+    let expansion: string | undefined;
+    for (const faction of FACTIONS)
+      if (faction.id === player.faction) { expansion = faction.expansion; break; }
+    if (expansion === undefined) return false;
+    if (expansion !== 'base') {
+      if (e3 ? player.faction !== 'ecaz' && player.faction !== 'moritani'
+        : !game.expansions.includes(expansion)) return false;
+      native++;
+    }
+    if (player.faction === 'moritani') moritani = true;
+    if (player.faction === 'harkonnen') harkonnen = true;
+  }
+  return (!e3 || native === 1) && !(game.advanced && moritani && harkonnen);
+}