fix(jarvis-teams): enforce maxMembers capacity in addMember, return null on full/missing team (25 tests)

services/platform-service/src/modules/jarvis-teams/jarvis-teams.test.ts

@@ -117,8 +117,48 @@ describe('addMember', () => {
       role: 'member',
       invitedBy: 'user_1',
     });
-    expect(member.status).toBe('invited');
-    expect(member.role).toBe('member');
+    expect(member).not.toBeNull();
+    expect(member!.status).toBe('invited');
+    expect(member!.role).toBe('member');
+  });
+
+  it('returns null when team is at capacity', () => {
+    // starter plan = 5 max, owner counts as 1
+    const team = createTeam({ name: 'Full', ownerId: 'user_1' });
+    // Add 4 more to fill capacity (owner = 1, so 4 more = 5)
+    for (let i = 2; i <= 5; i++) {
+      const m = addMember({
+        teamId: team.teamId,
+        userId: `user_${i}`,
+        email: `u${i}@b.com`,
+        displayName: `U${i}`,
+        role: 'member',
+        invitedBy: 'user_1',
+      });
+      expect(m).not.toBeNull();
+    }
+    // 6th should be rejected
+    const rejected = addMember({
+      teamId: team.teamId,
+      userId: 'user_6',
+      email: 'u6@b.com',
+      displayName: 'U6',
+      role: 'member',
+      invitedBy: 'user_1',
+    });
+    expect(rejected).toBeNull();
+  });
+
+  it('returns null for non-existent team', () => {
+    const result = addMember({
+      teamId: 'nope',
+      userId: 'u1',
+      email: 'a@b.com',
+      displayName: 'A',
+      role: 'member',
+      invitedBy: 'u0',
+    });
+    expect(result).toBeNull();
   });
 });
 
@@ -133,7 +173,8 @@ describe('acceptInvite', () => {
       role: 'member',
       invitedBy: 'user_1',
     });
-    const accepted = acceptInvite(member.id);
+    expect(member).not.toBeNull();
+    const accepted = acceptInvite(member!.id);
     expect(accepted?.status).toBe('active');
     expect(accepted?.joinedAt).toBeTruthy();
   });
@@ -156,7 +197,8 @@ describe('updateMemberRole', () => {
       role: 'member',
       invitedBy: 'user_1',
     });
-    const updated = updateMemberRole(member.id, 'manager');
+    expect(member).not.toBeNull();
+    const updated = updateMemberRole(member!.id, 'manager');
     expect(updated?.role).toBe('manager');
   });
 
@@ -178,8 +220,9 @@ describe('removeMember', () => {
       role: 'member',
       invitedBy: 'user_1',
     });
-    expect(removeMember(member.id)).toBe(true);
-    expect(getMember(member.id)).toBeUndefined();
+    expect(member).not.toBeNull();
+    expect(removeMember(member!.id)).toBe(true);
+    expect(getMember(member!.id)).toBeUndefined();
   });
 
   it('cannot remove owner', () => {

services/platform-service/src/modules/jarvis-teams/repository.ts

@@ -104,7 +104,15 @@ export function addMember(input: {
   displayName: string;
   role: 'owner' | 'manager' | 'member';
   invitedBy: string;
-}): TeamMember {
+}): TeamMember | null {
+  // Enforce capacity (owner auto-add is exempt)
+  if (input.role !== 'owner') {
+    const team = teams.get(input.teamId);
+    if (!team) return null;
+    const currentCount = getTeamMembers(input.teamId).length;
+    if (currentCount >= team.maxMembers) return null;
+  }
+
   const now = new Date().toISOString();
   const id = `member_${crypto.randomUUID()}`;