Migrate PC form + collector off legacy Machine onto the asset/computer model

- PCForm saves/loads via computersApi (asset core + computer extension +
  primary IP in one call); PC Type now uses the dedicated computertypes table
  instead of MachineType, fixing the cross-table id mismatch.
- Collector (/api/collector/*) writes the Computer model: lookup by hostname
  or asset number, update loggedinuser/lastreporteddate/lastboottime + asset
  serial, installed apps via ComputerInstalledApp.
- Add computers.vendorid + modelnumberid (PCs carry make/model) and
  computerinstalledapps.installedversion; computer GET now includes
  communications. Wire COLLECTOR_API_KEY into config.

Retires the last write paths to the Machine model for PCs (ADR-001).

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

plugins/computers/models/computer.py

@@ -62,6 +62,18 @@ class Computer(BaseModel):
         nullable=True
     )
 
+    # Hardware make/model (PCs carry vendor + model like equipment)
+    vendorid = db.Column(
+        db.Integer,
+        db.ForeignKey('vendors.vendorid'),
+        nullable=True
+    )
+    modelnumberid = db.Column(
+        db.Integer,
+        db.ForeignKey('models.modelnumberid'),
+        nullable=True
+    )
+
     # Status tracking
     loggedinuser = db.Column(db.String(100), nullable=True)
     lastreporteddate = db.Column(db.DateTime, nullable=True)
@@ -93,6 +105,8 @@ class Computer(BaseModel):
     )
     computertype = db.relationship('ComputerType', backref='computers')
     operatingsystem = db.relationship('OperatingSystem', backref='computers')
+    vendor = db.relationship('Vendor')
+    model = db.relationship('Model')
 
     # Installed applications (one-to-many)
     installedapps = db.relationship(
@@ -120,6 +134,10 @@ class Computer(BaseModel):
             result['computertypename'] = self.computertype.computertype
         if self.operatingsystem:
             result['osname'] = self.operatingsystem.osname
+        if self.vendor:
+            result['vendorname'] = self.vendor.vendor
+        if self.model:
+            result['modelname'] = self.model.modelnumber
 
         return result
 
@@ -149,6 +167,8 @@ class ComputerInstalledApp(db.Model):
         db.ForeignKey('appversions.appversionid'),
         nullable=True
     )
+    # Raw version string from automated collection (when no curated AppVersion)
+    installedversion = db.Column(db.String(100), nullable=True)
     isactive = db.Column(db.Boolean, default=True, nullable=False)
     installeddate = db.Column(db.DateTime, default=db.func.now())