Zabbix supply backend rebuild + data-driven model supplies

Rewrite the printer Zabbix integration (Bearer auth, host-by-IP, tag-based
supply lookup, ping) and replace the hardcoded toner table with a
modelsupplies table + CRUD + seed. Add mock Zabbix server, live test
harness, and the Playwright screenshot tooling.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

plugins/printers/models/__init__.py

@@ -2,9 +2,19 @@
 
 from .printer_extension import PrinterData  # Legacy model for Machine-based architecture
 from .printer import Printer, PrinterType  # New Asset-based models
+from .model_supply import (  # data-driven model -> toner/drum/waste mapping
+    ModelSupply,
+    SUPPLY_TYPES,
+    SUPPLY_COLORS,
+    CAPACITY_TIERS,
+)
 
 __all__ = [
     'PrinterData',  # Legacy
     'Printer',      # New
     'PrinterType',  # New
+    'ModelSupply',
+    'SUPPLY_TYPES',
+    'SUPPLY_COLORS',
+    'CAPACITY_TIERS',
 ]

plugins/printers/models/model_supply.py

@@ -0,0 +1,57 @@
+"""Model-to-supply mapping - data-driven toner/drum/waste part numbers.
+
+Replaces the old hardcoded part-number table. Each row maps one printer
+model to one supply part (a toner of a given color and capacity tier, or a
+drum/waste/maintenance item). Lets new models and their toners be added
+through the API/UI without a code change.
+"""
+
+from shopdb.extensions import db
+from shopdb.core.models.base import BaseModel
+
+
+# allowed values, surfaced to the UI via the /supplies/meta endpoint
+SUPPLY_TYPES = ('toner', 'drum', 'waste', 'maintenance')
+SUPPLY_COLORS = ('black', 'cyan', 'magenta', 'yellow', 'none')
+CAPACITY_TIERS = ('standard', 'high', 'extrahigh', 'metered', 'dmo')
+
+
+class ModelSupply(BaseModel):
+    """One supply part belonging to one printer model."""
+    __tablename__ = 'modelsupplies'
+
+    modelsupplyid = db.Column(db.Integer, primary_key=True)
+
+    modelnumberid = db.Column(
+        db.Integer,
+        db.ForeignKey('models.modelnumberid'),
+        nullable=False,
+    )
+
+    # toner, drum, waste, maintenance
+    supplytype = db.Column(db.String(20), nullable=False, default='toner')
+    # black, cyan, magenta, yellow, or none (drum/waste have no color)
+    color = db.Column(db.String(20), nullable=False, default='none')
+    # standard, high, extrahigh, metered, dmo
+    capacitytier = db.Column(db.String(20), nullable=False, default='standard')
+
+    partnumber = db.Column(db.String(50), nullable=False)
+    marketingname = db.Column(db.String(120))
+    pageyield = db.Column(db.Integer, comment='Rated page yield at 5 percent coverage')
+    notes = db.Column(db.Text)
+
+    model = db.relationship('Model', backref='supplies')
+
+    # one part number per model, no duplicates
+    __table_args__ = (
+        db.UniqueConstraint('modelnumberid', 'partnumber', name='uq_modelsupply_part'),
+    )
+
+    def __repr__(self):
+        return f"<ModelSupply {self.partnumber} ({self.color}/{self.capacitytier})>"
+
+    def to_dict(self):
+        data = super().to_dict()
+        if self.model:
+            data['modelnumber'] = self.model.modelnumber
+        return data