Major: Unified Activity System with Multi-VIP Support & Enhanced Search/Filtering

## Overview
Complete architectural overhaul merging dual event systems into a unified activity model
with multi-VIP support, enhanced search capabilities, and improved UX throughout.

## Database & Schema Changes

### Unified Activity Model (Breaking Change)
- Merged Event/EventTemplate/EventAttendance into single ScheduleEvent model
- Dropped duplicate tables: Event, EventAttendance, EventTemplate
- Single source of truth for all activities (transport, meals, meetings, events)
- Migration: 20260131180000_drop_duplicate_event_tables

### Multi-VIP Support (Breaking Change)
- Changed schema from single vipId to vipIds array (String[])
- Enables multiple VIPs per activity (ridesharing, group events)
- Migration: 20260131122613_multi_vip_support
- Updated all backend services to handle multi-VIP queries

### Seed Data Updates
- Rebuilt seed.ts with unified activity model
- Added multi-VIP rideshare examples (3 VIPs in SUV, 4 VIPs in van)
- Includes mix of transport + non-transport activities
- Balanced VIP test data (50% OFFICE_OF_DEVELOPMENT, 50% ADMIN)

## Backend Changes

### Services Cleanup
- Removed deprecated common-events endpoints
- Updated EventsService for multi-VIP support
- Enhanced VipsService with multi-VIP activity queries
- Updated DriversService, VehiclesService for unified model
- Added add-vips-to-event.dto for bulk VIP assignment

### Abilities & Permissions
- Updated ability.factory.ts: Event → ScheduleEvent subject
- Enhanced guards for unified activity permissions
- Maintained RBAC (Administrator, Coordinator, Driver roles)

### DTOs
- Updated create-event.dto: vipId → vipIds array
- Updated update-event.dto: vipId → vipIds array
- Added add-vips-to-event.dto for bulk operations
- Removed obsolete event-template DTOs

## Frontend Changes

### UI/UX Improvements

**Renamed "Schedule" → "Activities" Throughout**
- More intuitive terminology for coordinators
- Updated navigation, page titles, buttons
- Changed "Schedule Events" to "Activities" in Admin Tools

**Activities Page Enhancements**
- Added comprehensive search bar (searches: title, location, description, VIP names, driver, vehicle)
- Added sortable columns: Title, Type, VIPs, Start Time, Status
- Visual sort indicators (↑↓ arrows)
- Real-time result count when searching
- Empty state with helpful messaging

**Admin Tools Updates**
- Balanced VIP test data: 10 OFFICE_OF_DEVELOPMENT + 10 ADMIN
- More BSA-relevant organizations (Coca-Cola, AT&T, Walmart vs generic orgs)
- BSA leadership titles (National President, Chief Scout Executive, Regional Directors)
- Relabeled "Schedule Events" → "Activities"

### Component Updates

**EventList.tsx (Activities Page)**
- Added search state management with real-time filtering
- Implemented multi-field sorting with direction toggle
- Enhanced empty states for search + no data scenarios
- Filter tabs + search work together seamlessly

**VIPSchedule.tsx**
- Updated for multi-VIP schema (vipIds array)
- Shows complete itinerary timeline per VIP
- Displays all activities for selected VIP
- Groups by day with formatted dates

**EventForm.tsx**
- Updated to handle vipIds array instead of single vipId
- Multi-select VIP assignment
- Maintains backward compatibility

**AdminTools.tsx**
- New balanced VIP test data (10/10 split)
- BSA-context organizations
- Updated button labels ("Add Test Activities")

### Routing & Navigation
- Removed /common-events routes
- Updated navigation menu labels
- Maintained protected route structure
- Cleaner URL structure

## New Features

### Multi-VIP Activity Support
- Activities can have multiple VIPs (ridesharing, group events)
- Efficient seat utilization tracking (3/6 seats, 4/12 seats)
- Better coordination for shared transport

### Advanced Search & Filtering
- Full-text search across multiple fields
- Instant filtering as you type
- Search + type filters work together
- Clear visual feedback (result counts)

### Sortable Data Tables
- Click column headers to sort
- Toggle ascending/descending
- Visual indicators for active sort
- Sorts persist with search/filter

### Enhanced Admin Tools
- One-click test data generation
- Realistic BSA Jamboree scenario data
- Balanced department representation
- Complete 3-day itineraries per VIP

## Testing & Validation

### Playwright E2E Tests
- Added e2e/ directory structure
- playwright.config.ts configured
- PLAYWRIGHT_GUIDE.md documentation
- Ready for comprehensive E2E testing

### Manual Testing Performed
- Multi-VIP activity creation ✓
- Search across all fields ✓
- Column sorting (all fields) ✓
- Filter tabs + search combination ✓
- Admin Tools data generation ✓
- Database migrations ✓

## Breaking Changes & Migration

**Database Schema Changes**
1. Run migrations: `npx prisma migrate deploy`
2. Reseed database: `npx prisma db seed`
3. Existing data incompatible (dev environment - safe to nuke)

**API Changes**
- POST /events now requires vipIds array (not vipId string)
- GET /events returns vipIds array
- GET /vips/:id/schedule updated for multi-VIP
- Removed /common-events/* endpoints

**Frontend Type Changes**
- ScheduleEvent.vipIds: string[] (was vipId: string)
- EventFormData updated accordingly
- All pages handle array-based VIP assignment

## File Changes Summary

**Added:**
- backend/prisma/migrations/20260131180000_drop_duplicate_event_tables/
- backend/src/events/dto/add-vips-to-event.dto.ts
- frontend/src/components/InlineDriverSelector.tsx
- frontend/e2e/ (Playwright test structure)
- Documentation: NAVIGATION_UX_IMPROVEMENTS.md, PLAYWRIGHT_GUIDE.md

**Modified:**
- 30+ backend files (schema, services, DTOs, abilities)
- 20+ frontend files (pages, components, types)
- Admin tools, seed data, navigation

**Removed:**
- Event/EventAttendance/EventTemplate database tables
- Common events frontend pages
- Obsolete event template DTOs

## Next Steps

**Pending (Phase 3):**
- Activity Templates for bulk event creation
- Operations Dashboard (today's activities + conflicts)
- Complete workflow testing with real users
- Additional E2E test coverage

## Notes
- Development environment - no production data affected
- Database can be reset anytime: `npx prisma migrate reset`
- All servers tested and running successfully
- HMR working correctly for frontend changes

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

frontend/package-lock.json

@@ -11,6 +11,7 @@
         "@auth0/auth0-react": "^2.2.4",
         "@casl/ability": "^6.8.0",
         "@casl/react": "^5.0.1",
+        "@heroicons/react": "^2.2.0",
         "@tanstack/react-query": "^5.17.19",
         "axios": "^1.6.5",
         "clsx": "^2.1.0",
@@ -23,6 +24,8 @@
         "tailwind-merge": "^2.2.0"
       },
       "devDependencies": {
+        "@axe-core/playwright": "^4.11.0",
+        "@playwright/test": "^1.58.1",
         "@types/react": "^18.2.48",
         "@types/react-dom": "^18.2.18",
         "@typescript-eslint/eslint-plugin": "^6.19.0",
@@ -75,6 +78,19 @@
         "es-cookie": "~1.3.2"
       }
     },
+    "node_modules/@axe-core/playwright": {
+      "version": "4.11.0",
+      "resolved": "https://registry.npmjs.org/@axe-core/playwright/-/playwright-4.11.0.tgz",
+      "integrity": "sha512-70vBT/Ylqpm65RQz2iCG2o0JJCEG/WCNyefTr2xcOcr1CoSee60gNQYUMZZ7YukoKkFLv26I/jjlsvwwp532oQ==",
+      "dev": true,
+      "license": "MPL-2.0",
+      "dependencies": {
+        "axe-core": "~4.11.0"
+      },
+      "peerDependencies": {
+        "playwright-core": ">= 1.0.0"
+      }
+    },
     "node_modules/@babel/code-frame": {
       "version": "7.28.6",
       "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.28.6.tgz",
@@ -879,6 +895,15 @@
         "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
       }
     },
+    "node_modules/@heroicons/react": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/@heroicons/react/-/react-2.2.0.tgz",
+      "integrity": "sha512-LMcepvRaS9LYHJGsF0zzmgKCUim/X3N/DQKc4jepAXJ7l8QxJ1PmxJzqplF2Z3FE4PqBAIGyJAQ/w4B5dsqbtQ==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react": ">= 16 || ^19.0.0-rc"
+      }
+    },
     "node_modules/@humanwhocodes/config-array": {
       "version": "0.13.0",
       "resolved": "https://registry.npmjs.org/@humanwhocodes/config-array/-/config-array-0.13.0.tgz",
@@ -1029,6 +1054,22 @@
         "node": ">= 8"
       }
     },
+    "node_modules/@playwright/test": {
+      "version": "1.58.1",
+      "resolved": "https://registry.npmjs.org/@playwright/test/-/test-1.58.1.tgz",
+      "integrity": "sha512-6LdVIUERWxQMmUSSQi0I53GgCBYgM2RpGngCPY7hSeju+VrKjq3lvs7HpJoPbDiY5QM5EYRtRX5fvrinnMAz3w==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "playwright": "1.58.1"
+      },
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/@remix-run/router": {
       "version": "1.23.2",
       "resolved": "https://registry.npmjs.org/@remix-run/router/-/router-1.23.2.tgz",
@@ -1933,6 +1974,16 @@
         "postcss": "^8.1.0"
       }
     },
+    "node_modules/axe-core": {
+      "version": "4.11.1",
+      "resolved": "https://registry.npmjs.org/axe-core/-/axe-core-4.11.1.tgz",
+      "integrity": "sha512-BASOg+YwO2C+346x3LZOeoovTIoTrRqEsqMa6fmfAV0P+U9mFr9NsyOEpiYvFjbc64NMrSswhV50WdXzdb/Z5A==",
+      "dev": true,
+      "license": "MPL-2.0",
+      "engines": {
+        "node": ">=4"
+      }
+    },
     "node_modules/axios": {
       "version": "1.13.2",
       "resolved": "https://registry.npmjs.org/axios/-/axios-1.13.2.tgz",
@@ -3732,6 +3783,54 @@
         "node": ">= 6"
       }
     },
+    "node_modules/playwright": {
+      "version": "1.58.1",
+      "resolved": "https://registry.npmjs.org/playwright/-/playwright-1.58.1.tgz",
+      "integrity": "sha512-+2uTZHxSCcxjvGc5C891LrS1/NlxglGxzrC4seZiVjcYVQfUa87wBL6rTDqzGjuoWNjnBzRqKmF6zRYGMvQUaQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "playwright-core": "1.58.1"
+      },
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "optionalDependencies": {
+        "fsevents": "2.3.2"
+      }
+    },
+    "node_modules/playwright-core": {
+      "version": "1.58.1",
+      "resolved": "https://registry.npmjs.org/playwright-core/-/playwright-core-1.58.1.tgz",
+      "integrity": "sha512-bcWzOaTxcW+VOOGBCQgnaKToLJ65d6AqfLVKEWvexyS3AS6rbXl+xdpYRMGSRBClPvyj44njOWoxjNdL/H9UNg==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "peer": true,
+      "bin": {
+        "playwright-core": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/playwright/node_modules/fsevents": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
+      "integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
+      "dev": true,
+      "hasInstallScript": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
+      }
+    },
     "node_modules/postcss": {
       "version": "8.5.6",
       "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.6.tgz",