Add independent alignment for custom roles (#217)

* Initial plan

* Add independent alignment: constants, validation, UI, and CSS

Co-authored-by: AlecM33 <24642328+AlecM33@users.noreply.github.com>

* Add unit tests for independent alignment validation

Co-authored-by: AlecM33 <24642328+AlecM33@users.noreply.github.com>

* Fix remaining binary alignment checks in role display

Co-authored-by: AlecM33 <24642328+AlecM33@users.noreply.github.com>

* Add independent player container and game-role-independent CSS

Co-authored-by: AlecM33 <24642328+AlecM33@users.noreply.github.com>

* fix a couple bugs, tweak colors

* remove import

* remove duplicate tag

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: AlecM33 <24642328+AlecM33@users.noreply.github.com>
Co-authored-by: AlecM33 <leohfx@gmail.com>

spec/unit/server/model/GameCreationRequest_Spec.js

@@ -0,0 +1,104 @@
+const GameCreationRequest = require('../../../../server/model/GameCreationRequest');
+const { ALIGNMENT } = require('../../../../server/config/globals');
+
+describe('GameCreationRequest', () => {
+    describe('#deckIsValid', () => {
+        it('should accept a deck with good, evil, and independent roles', () => {
+            const deck = [
+                {
+                    role: 'Villager',
+                    team: ALIGNMENT.GOOD,
+                    description: 'A simple villager',
+                    custom: false,
+                    quantity: 2
+                },
+                {
+                    role: 'Werewolf',
+                    team: ALIGNMENT.EVIL,
+                    description: 'A werewolf',
+                    custom: false,
+                    quantity: 1
+                },
+                {
+                    role: 'Tanner',
+                    team: ALIGNMENT.INDEPENDENT,
+                    description: 'An independent role',
+                    custom: true,
+                    quantity: 1
+                }
+            ];
+
+            expect(GameCreationRequest.deckIsValid(deck)).toBe(true);
+        });
+
+        it('should accept a deck with only good roles', () => {
+            const deck = [
+                {
+                    role: 'Villager',
+                    team: ALIGNMENT.GOOD,
+                    description: 'A simple villager',
+                    custom: false,
+                    quantity: 3
+                }
+            ];
+
+            expect(GameCreationRequest.deckIsValid(deck)).toBe(true);
+        });
+
+        it('should accept a deck with only evil roles', () => {
+            const deck = [
+                {
+                    role: 'Werewolf',
+                    team: ALIGNMENT.EVIL,
+                    description: 'A werewolf',
+                    custom: false,
+                    quantity: 2
+                }
+            ];
+
+            expect(GameCreationRequest.deckIsValid(deck)).toBe(true);
+        });
+
+        it('should accept a deck with only independent roles', () => {
+            const deck = [
+                {
+                    role: 'Tanner',
+                    team: ALIGNMENT.INDEPENDENT,
+                    description: 'An independent role',
+                    custom: true,
+                    quantity: 1
+                }
+            ];
+
+            expect(GameCreationRequest.deckIsValid(deck)).toBe(true);
+        });
+
+        it('should reject a deck with invalid team values', () => {
+            const deck = [
+                {
+                    role: 'InvalidRole',
+                    team: 'invalid',
+                    description: 'Invalid team',
+                    custom: true,
+                    quantity: 1
+                }
+            ];
+
+            expect(GameCreationRequest.deckIsValid(deck)).toBe(false);
+        });
+
+        it('should reject a deck with missing required fields', () => {
+            const deck = [
+                {
+                    role: 'Villager',
+                    // missing team
+                    description: 'A simple villager',
+                    custom: false,
+                    quantity: 1
+                }
+            ];
+
+            expect(GameCreationRequest.deckIsValid(deck)).toBe(false);
+        });
+    });
+});