feat: use modals for creation across all pages + fix profile prompt

- Campaigns: add create modal (name, brand, team, dates, budget)
- PostProduction: add create modal (title, brand, campaign, assignee),
  auto-opens detail panel after creation
- Tasks: add create modal (title, project, priority, assignee),
  auto-opens detail panel after creation
- Fix profileComplete check: use !!user.name instead of !!user.team_role
  in /api/auth/me (was always showing profile prompt since team_role
  is now deprecated in favor of role_id)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/server.js

@@ -748,7 +748,7 @@ app.get('/api/auth/me', requireAuth, async (req, res) => {
       brands: user.brands, phone: user.phone,
       tutorial_completed: user.tutorial_completed,
       CreatedAt: user.CreatedAt, created_at: user.CreatedAt,
-      profileComplete: !!user.team_role,
+      profileComplete: !!user.name,
       modules,
     });
   } catch (err) {