feat: overhaul groups management, remove global team_admin and isolate group administration

frontend/src/lib/api.ts

@@ -723,6 +723,13 @@ export const api = {
     });
   },
 
+  async updateTeam(teamId: string, name: string, description = ''): Promise<Team> {
+    return request<Team>(`/api/v1/teams/${teamId}`, {
+      method: 'PUT',
+      body: JSON.stringify({ name, description }),
+    });
+  },
+
   async deleteTeam(teamId: string): Promise<void> {
     await request(`/api/v1/teams/${teamId}`, { method: 'DELETE' });
   },
@@ -742,6 +749,17 @@ export const api = {
     });
   },
 
+  async updateTeamMemberRole(
+    teamId: string,
+    userId: string,
+    role: 'admin' | 'member'
+  ): Promise<void> {
+    await request(`/api/v1/teams/${teamId}/members/${userId}`, {
+      method: 'PUT',
+      body: JSON.stringify({ role }),
+    });
+  },
+
   async removeTeamMember(teamId: string, userId: string): Promise<void> {
     await request(`/api/v1/teams/${teamId}/members/${userId}`, { method: 'DELETE' });
   },

frontend/src/lib/types.ts

@@ -1,6 +1,6 @@
 export type ThoughtStatus = 'inbox' | 'kept' | 'discarded' | 'converted';
 export type PriorityLevel = 'low' | 'normal' | 'high' | 'urgent';
-export type UserRole = 'admin' | 'team_admin' | 'member';
+export type UserRole = 'admin' | 'member';
 
 export interface AuthStatus {
   needsSetup: boolean;
@@ -119,7 +119,7 @@ export interface Organization {
 
 export interface Team {
   id: string;
-  orgId: string;
+  orgId?: string;
   name: string;
   description: string;
   members?: TeamMember[];
@@ -131,7 +131,7 @@ export interface TeamMember {
   userId: string;
   displayName: string;
   email: string;
-  role: 'owner' | 'team_admin' | 'editor' | 'member' | 'viewer';
+  role: 'admin' | 'member';
   joinedAt: string;
 }