Connect paired E3 Skills without Nexus and retain native arrival independence

Reuse original paired roster validation with plain all14 native setup and optional independent cards. Preserve real coalition, trained death and Mentat paths; extend the existing paid Ambassador/Terror queue to paired Skills and card-only factions. Frozen29-file323/323, types/lint/build, native programmes and390px entry pass. No save conversion or deployment.

game/leader-skill-profile.ts

@@ -166,6 +166,10 @@ export function mixedE1E2NexusLeaderSkillsProfile(game: LeaderSkillProfile): boo
 export function pairedE3NexusLeaderSkillsProfile(game: LeaderSkillProfile): boolean {
   if (game.expansions.length !== 1 || game.expansions[0] !== 'ecaz' ||
     !nexusLeaderSkillModulesSupported(game, game.advanced === true, true)) return false;
+  return pairedE3LeaderSkillRoster(game);
+}
+
+function pairedE3LeaderSkillRoster(game: LeaderSkillProfile): boolean {
   const players = game.players!;
   let ecaz = false, moritani = false;
   for (let i = 0; i < players.length; i++) {
@@ -184,6 +188,20 @@ export function pairedE3NexusLeaderSkillsProfile(game: LeaderSkillProfile): bool
   return ecaz && moritani;
 }
 
+/** Both original E3 natives without an unrelated module; independent cards are optional. */
+export function pairedE3LeaderSkillsProfile(game: LeaderSkillProfile): boolean {
+  if (game.expansions.length !== 1 || game.expansions[0] !== 'ecaz' ||
+      typeof game.advanced !== 'boolean' || !game.players ||
+      game.players.length < 2 || game.players.length > 6 ||
+      (!noOtherLeaderSkillModules(game) && !independentTreacheryLeaderSkillsProfile(game)) ||
+      game.discoveryStash || game.greatMaker || game.semutaPreview || game.advancedPreview ||
+      (game.moritaniAssassinatePreview && !game.advanced) ||
+      game.kullPreview || game.nexusKullPreview || game.guildBetrayalPreview ||
+      game.richeseBetrayalPreview || game.nexusIxianReplacementPreview ||
+      game.nexusIxianBetrayalPreview || game.nexusHarkonnenBetrayalPreview) return false;
+  return pairedE3LeaderSkillRoster(game);
+}
+
 /** Original two/three selected families with native E3, Nexus and optional original modules. */
 export function mixedE3NexusLeaderSkillsProfile(game: LeaderSkillProfile): boolean {
   return nexusLeaderSkillModulesSupported(game, game.advanced === true, true) &&
@@ -304,6 +322,7 @@ export function strongholdLeaderSkillsProfile(game: LeaderSkillProfile): boolean
 
 /** Bounded integration of the ordinary Moritani roster, not Advanced assassination. */
 export function basicMoritaniLeaderSkillsProfile(game: LeaderSkillProfile): boolean {
+  if (game.advanced === false && pairedE3LeaderSkillsProfile(game)) return true;
   return game.advanced === false && game.expansions.length === 1 &&
     game.expansions[0] === 'ecaz' && e3LeaderSkillModulesSupported(game) &&
     !!game.players?.some(player => player.faction === 'moritani') &&
@@ -313,6 +332,7 @@ export function basicMoritaniLeaderSkillsProfile(game: LeaderSkillProfile): bool
 
 /** Existing bounded Advanced assassination roster, composed with native skills. */
 export function advancedMoritaniLeaderSkillsProfile(game: LeaderSkillProfile): boolean {
+  if (game.advanced === true && pairedE3LeaderSkillsProfile(game)) return true;
   const players = game.players;
   if (game.advanced !== true || game.expansions.length !== 1 ||
     game.expansions[0] !== 'ecaz' || !players || players.length < 2 || players.length > 6 ||
@@ -338,6 +358,7 @@ export function advancedMoritaniLeaderSkillsProfile(game: LeaderSkillProfile): b
 
 /** Ecaz's five native discs; the separate temporarily controlled Duke is not an assignment disc. */
 export function nativeEcazLeaderSkillsProfile(game: LeaderSkillProfile): boolean {
+  if (pairedE3LeaderSkillsProfile(game)) return true;
   const players = game.players;
   if (typeof game.advanced !== 'boolean' || game.expansions.length !== 1 ||
     game.expansions[0] !== 'ecaz' || !players || players.length < 2 || players.length > 6 ||
@@ -508,7 +529,7 @@ export function homeworldLeaderSkillsProfile(game: LeaderSkillProfile): boolean
   return true;
 }
 
-/** Independent cards with classic, selected E1/E2 or standalone E3 all14 setup. */
+/** Independent cards with classic, selected E1/E2 or standalone/paired E3 all14 setup. */
 export function independentTreacheryLeaderSkillsProfile(game: LeaderSkillProfile): boolean {
   const e3 = game.expansions.length === 1 && game.expansions[0] === 'ecaz';
   if (game.ecazTreachery !== true || game.expansions.length > 2 ||
@@ -525,21 +546,21 @@ export function independentTreacheryLeaderSkillsProfile(game: LeaderSkillProfile
     for (let j = 0; j < i; j++) if (game.expansions[j] === game.expansions[i]) return false;
   }
   const players = game.players;
-  let e3Natives = 0;
+  let nativeE3 = false;
   for (let i = 0; i < players.length; i++) {
     for (let j = 0; j < i; j++) if (players[j].faction === players[i].faction) return false;
     let selected = false;
     for (const faction of FACTIONS)
       if (faction.id === players[i].faction) {
         selected = faction.expansion === 'base' || game.expansions.includes(faction.expansion);
-        if (faction.expansion === 'ecaz') e3Natives++;
+        if (faction.expansion === 'ecaz') nativeE3 = true;
         break;
       }
     if (!selected) return false;
   }
-  // Preserve the original standalone native Skills/Duke roster boundaries.
-  if (e3 && (e3Natives > 1 || (e3Natives > 0 && game.advanced &&
-      players.some(player => player.faction === 'harkonnen')))) return false;
+  // Preserve the native Advanced Skills/Harkonnen and shared-Duke boundaries.
+  if (e3 && nativeE3 && game.advanced &&
+      players.some(player => player.faction === 'harkonnen')) return false;
   if (game.moritaniAssassinatePreview && (!e3 || !game.advanced ||
       !players.some(player => player.faction === 'moritani'))) return false;
   return true;