chore: enforce lint across codebase and ban "maybe" in identifiers

Remove member-ordering and complexity eslint-disable comments by reordering
class members and applying targeted fixes. Add metoyou/no-maybe-in-naming,
type-safe WebRTC e2e harness helpers, and resolve remaining lint errors so
npm run lint exits cleanly.

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

server/src/websocket/broadcast.spec.ts

@@ -62,7 +62,9 @@ describe('broadcastToServer', () => {
     expect((connA2.ws as WebSocket & { sentMessages: string[] }).sentMessages).toHaveLength(1);
     expect((connB.ws as WebSocket & { sentMessages: string[] }).sentMessages).toHaveLength(1);
     expect(connectedUsers.get('conn-a1')?.ws).toBeDefined();
-    expect((connectedUsers.get('conn-a1')!.ws as WebSocket & { sentMessages: string[] }).sentMessages).toHaveLength(0);
+    const connA1Passive = connectedUsers.get('conn-a1')?.ws as WebSocket & { sentMessages: string[] } | undefined;
+
+    expect(connA1Passive?.sentMessages).toHaveLength(0);
   });
 
   it('excludes every connection for an identity when excludeIdentityOderId is set', () => {

server/src/websocket/handler-multi-client.spec.ts

@@ -94,12 +94,13 @@ describe('server websocket handler - multi-client sessions', () => {
   });
 
   it('relays voice_state to other connections for the same user', async () => {
-    const sender = createConnectedUser('conn-a1', {
+    createConnectedUser('conn-a1', {
       authenticated: true,
       oderId: 'user-1',
       serverIds: new Set(['server-1']),
       clientInstanceId: 'device-a'
     });
+
     const passive = createConnectedUser('conn-a2', {
       authenticated: true,
       oderId: 'user-1',
@@ -129,7 +130,7 @@ describe('server websocket handler - multi-client sessions', () => {
   });
 
   it('forwards RTC offers to the voice-active connection for the target user', async () => {
-    const sender = createConnectedUser('conn-sender', {
+    createConnectedUser('conn-sender', {
       authenticated: true,
       oderId: 'user-2',
       serverIds: new Set(['server-1'])
@@ -228,6 +229,7 @@ describe('server websocket handler - multi-client sessions', () => {
       serverIds: new Set(['server-1']),
       clientInstanceId: 'device-a'
     });
+
     const receiver = createConnectedUser('conn-a2', {
       authenticated: true,
       oderId: 'user-1',