Add USB, Notifications, Network plugins and reusable EmployeeSearch component

New Plugins:
- USB plugin: Device checkout/checkin with employee lookup, checkout history
- Notifications plugin: Announcements with types, scheduling, shopfloor display
- Network plugin: Network device management with subnets and VLANs
- Equipment and Computers plugins: Asset type separation

Frontend:
- EmployeeSearch component: Reusable employee lookup with autocomplete
- USB views: List, detail, checkout/checkin modals
- Notifications views: List, form with recognition mode
- Network views: Device list, detail, form
- Calendar view with FullCalendar integration
- Shopfloor and TV dashboard views
- Reports index page
- Map editor for asset positioning
- Light/dark mode fixes for map tooltips

Backend:
- Employee search API with external lookup service
- Collector API for PowerShell data collection
- Reports API endpoints
- Slides API for TV dashboard
- Fixed AppVersion model (removed BaseModel inheritance)
- Added checkout_name column to usbcheckouts table

Styling:
- Unified detail page styles
- Improved pagination (page numbers instead of prev/next)
- Dark/light mode theme improvements

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

scripts/migration/fix_legacy_schema.sql

@@ -0,0 +1,88 @@
+-- =============================================================================
+-- Legacy Schema Migration Script
+-- Adds missing columns to make VBScript ShopDB compatible with Flask ShopDB
+-- =============================================================================
+
+-- -----------------------------------------------------------------------------
+-- appowners table
+-- -----------------------------------------------------------------------------
+ALTER TABLE appowners
+  ADD COLUMN IF NOT EXISTS email VARCHAR(100) NULL,
+  ADD COLUMN IF NOT EXISTS phone VARCHAR(50) NULL,
+  ADD COLUMN IF NOT EXISTS createddate DATETIME DEFAULT NOW(),
+  ADD COLUMN IF NOT EXISTS modifieddate DATETIME DEFAULT NOW(),
+  ADD COLUMN IF NOT EXISTS isactive TINYINT(1) DEFAULT 1;
+
+-- -----------------------------------------------------------------------------
+-- pctypes / computertypes alignment
+-- -----------------------------------------------------------------------------
+-- The Flask app uses pctype table but expects certain columns
+ALTER TABLE pctype
+  ADD COLUMN IF NOT EXISTS createddate DATETIME DEFAULT NOW(),
+  ADD COLUMN IF NOT EXISTS modifieddate DATETIME DEFAULT NOW();
+
+-- Ensure isactive is correct type
+ALTER TABLE pctype MODIFY COLUMN isactive TINYINT(1) DEFAULT 1;
+
+-- -----------------------------------------------------------------------------
+-- statuses table (if needed - Flask uses assetstatuses)
+-- -----------------------------------------------------------------------------
+-- assetstatuses already populated earlier
+
+-- -----------------------------------------------------------------------------
+-- subnets table
+-- -----------------------------------------------------------------------------
+ALTER TABLE subnets
+  ADD COLUMN IF NOT EXISTS createddate DATETIME DEFAULT NOW(),
+  ADD COLUMN IF NOT EXISTS modifieddate DATETIME DEFAULT NOW(),
+  ADD COLUMN IF NOT EXISTS isactive TINYINT(1) DEFAULT 1;
+
+-- -----------------------------------------------------------------------------
+-- vlans table
+-- -----------------------------------------------------------------------------
+ALTER TABLE vlans
+  ADD COLUMN IF NOT EXISTS createddate DATETIME DEFAULT NOW(),
+  ADD COLUMN IF NOT EXISTS modifieddate DATETIME DEFAULT NOW(),
+  ADD COLUMN IF NOT EXISTS isactive TINYINT(1) DEFAULT 1;
+
+-- -----------------------------------------------------------------------------
+-- usbdevices table
+-- -----------------------------------------------------------------------------
+ALTER TABLE usbdevices
+  ADD COLUMN IF NOT EXISTS createddate DATETIME DEFAULT NOW(),
+  ADD COLUMN IF NOT EXISTS modifieddate DATETIME DEFAULT NOW(),
+  ADD COLUMN IF NOT EXISTS isactive TINYINT(1) DEFAULT 1;
+
+-- -----------------------------------------------------------------------------
+-- usbcheckouts table
+-- -----------------------------------------------------------------------------
+ALTER TABLE usbcheckouts
+  ADD COLUMN IF NOT EXISTS createddate DATETIME DEFAULT NOW(),
+  ADD COLUMN IF NOT EXISTS modifieddate DATETIME DEFAULT NOW();
+
+-- -----------------------------------------------------------------------------
+-- notifications table
+-- -----------------------------------------------------------------------------
+ALTER TABLE notifications
+  ADD COLUMN IF NOT EXISTS createddate DATETIME DEFAULT NOW(),
+  ADD COLUMN IF NOT EXISTS modifieddate DATETIME DEFAULT NOW();
+
+-- Copy dates from existing columns if they exist
+UPDATE notifications SET createddate = startdate WHERE createddate IS NULL;
+UPDATE notifications SET modifieddate = startdate WHERE modifieddate IS NULL;
+
+-- -----------------------------------------------------------------------------
+-- Verify key counts
+-- -----------------------------------------------------------------------------
+SELECT 'Migration complete. Record counts:' as status;
+SELECT 'vendors' as tbl, COUNT(*) as cnt FROM vendors
+UNION ALL SELECT 'models', COUNT(*) FROM models
+UNION ALL SELECT 'machinetypes', COUNT(*) FROM machinetypes
+UNION ALL SELECT 'operatingsystems', COUNT(*) FROM operatingsystems
+UNION ALL SELECT 'businessunits', COUNT(*) FROM businessunits
+UNION ALL SELECT 'applications', COUNT(*) FROM applications
+UNION ALL SELECT 'machines', COUNT(*) FROM machines
+UNION ALL SELECT 'printers', COUNT(*) FROM printers
+UNION ALL SELECT 'assets', COUNT(*) FROM assets
+UNION ALL SELECT 'knowledgebase', COUNT(*) FROM knowledgebase
+UNION ALL SELECT 'notifications', COUNT(*) FROM notifications;