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>

plugins/printers/models/printer.py

@@ -0,0 +1,122 @@
+"""Printer plugin models - new Asset-based architecture."""
+
+from shopdb.extensions import db
+from shopdb.core.models.base import BaseModel
+
+
+class PrinterType(BaseModel):
+    """
+    Printer type classification.
+
+    Examples: Laser, Inkjet, Label, MFP, Plotter, etc.
+    """
+    __tablename__ = 'printertypes'
+
+    printertypeid = db.Column(db.Integer, primary_key=True)
+    printertype = db.Column(db.String(100), unique=True, nullable=False)
+    description = db.Column(db.Text)
+    icon = db.Column(db.String(50), comment='Icon name for UI')
+
+    def __repr__(self):
+        return f"<PrinterType {self.printertype}>"
+
+
+class Printer(BaseModel):
+    """
+    Printer-specific extension data (new Asset architecture).
+
+    Links to core Asset table via assetid.
+    Stores printer-specific fields like type, Windows name, share name, etc.
+    """
+    __tablename__ = 'printers'
+
+    printerid = db.Column(db.Integer, primary_key=True)
+
+    # Link to core asset
+    assetid = db.Column(
+        db.Integer,
+        db.ForeignKey('assets.assetid', ondelete='CASCADE'),
+        unique=True,
+        nullable=False,
+        index=True
+    )
+
+    # Printer classification
+    printertypeid = db.Column(
+        db.Integer,
+        db.ForeignKey('printertypes.printertypeid'),
+        nullable=True
+    )
+
+    # Vendor
+    vendorid = db.Column(
+        db.Integer,
+        db.ForeignKey('vendors.vendorid'),
+        nullable=True
+    )
+    modelnumberid = db.Column(
+        db.Integer,
+        db.ForeignKey('models.modelnumberid'),
+        nullable=True
+    )
+
+    # Network identity
+    hostname = db.Column(
+        db.String(100),
+        index=True,
+        comment='Network hostname'
+    )
+
+    # Windows/Network naming
+    windowsname = db.Column(
+        db.String(255),
+        comment='Windows printer name (e.g., \\\\server\\printer)'
+    )
+    sharename = db.Column(
+        db.String(100),
+        comment='CSF/share name'
+    )
+
+    # Installation
+    iscsf = db.Column(db.Boolean, default=False, comment='Is CSF printer')
+    installpath = db.Column(db.String(255), comment='Driver install path')
+
+    # Printer PIN (for secure print)
+    pin = db.Column(db.String(20))
+
+    # Features
+    iscolor = db.Column(db.Boolean, default=False, comment='Color capable')
+    isduplex = db.Column(db.Boolean, default=False, comment='Duplex capable')
+    isnetwork = db.Column(db.Boolean, default=True, comment='Network connected')
+
+    # Relationships
+    asset = db.relationship(
+        'Asset',
+        backref=db.backref('printer', uselist=False, lazy='joined')
+    )
+    printertype = db.relationship('PrinterType', backref='printers')
+    vendor = db.relationship('Vendor', backref='printer_items')
+    model = db.relationship('Model', backref='printer_items')
+
+    __table_args__ = (
+        db.Index('idx_printer_type', 'printertypeid'),
+        db.Index('idx_printer_hostname', 'hostname'),
+        db.Index('idx_printer_windowsname', 'windowsname'),
+    )
+
+    def __repr__(self):
+        return f"<Printer {self.hostname or self.assetid}>"
+
+    def to_dict(self):
+        """Convert to dictionary with related names."""
+        result = super().to_dict()
+
+        # Add related object names
+        if self.printertype:
+            result['printertype_name'] = self.printertype.printertype
+        if self.vendor:
+            result['vendor_name'] = self.vendor.vendor
+        if self.model:
+            result['model_name'] = self.model.modelnumber
+
+        return result