Add printer types with bed volume + add-printer UI

- PrinterType model: name, bed_x_mm/y/z, linked to Printer via type_id
- Migration 0002: creates printer_types, adds type_id to printers, drops model
- /printer-types page: table + Add Type modal form
- /printers page: Add Printer modal with type dropdown (disabled if no types)
- API: GET/POST/DELETE /api/printer-types

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/routers/printer_types.py

@@ -0,0 +1,39 @@
+from fastapi import APIRouter, Depends, HTTPException
+from pydantic import BaseModel
+from sqlalchemy.orm import Session
+
+from app.db import get_db
+from app.models.printer_type import PrinterType
+
+router = APIRouter(prefix="/printer-types", tags=["printer-types"])
+
+
+class PrinterTypeCreate(BaseModel):
+    name: str
+    bed_x_mm: int
+    bed_y_mm: int
+    bed_z_mm: int
+
+
+@router.get("/")
+def list_printer_types(db: Session = Depends(get_db)):
+    return [t.to_dict() for t in db.query(PrinterType).order_by(PrinterType.name).all()]
+
+
+@router.post("/")
+def create_printer_type(data: PrinterTypeCreate, db: Session = Depends(get_db)):
+    pt = PrinterType(**data.model_dump())
+    db.add(pt)
+    db.commit()
+    db.refresh(pt)
+    return pt.to_dict()
+
+
+@router.delete("/{type_id}")
+def delete_printer_type(type_id: int, db: Session = Depends(get_db)):
+    pt = db.query(PrinterType).filter(PrinterType.id == type_id).first()
+    if not pt:
+        raise HTTPException(status_code=404, detail="Printer type not found")
+    db.delete(pt)
+    db.commit()
+    return {"ok": True}

app/routers/ui.py

@@ -1,12 +1,14 @@
-from fastapi import APIRouter, Depends, Request
-from fastapi.responses import HTMLResponse
+from fastapi import APIRouter, Depends, Form, Request
+from fastapi.responses import HTMLResponse, RedirectResponse
 from fastapi.templating import Jinja2Templates
 from sqlalchemy.orm import Session
+from starlette.status import HTTP_303_SEE_OTHER
 
 from app.db import get_db
 from app.models.filament import Filament
 from app.models.print_job import JobStatus, PrintJob
 from app.models.printer import Printer, PrinterStatus
+from app.models.printer_type import PrinterType
 from app.models.pricing import PricingConfig
 from app.models.todo import Todo
 
@@ -37,9 +39,50 @@ def printers_page(request: Request, db: Session = Depends(get_db)):
         "request": request,
         "active": "printers",
         "printers": db.query(Printer).order_by(Printer.name).all(),
+        "printer_types": db.query(PrinterType).order_by(PrinterType.name).all(),
     })
 
 
+@router.post("/printers")
+def create_printer(
+    name: str = Form(...),
+    location: str = Form(""),
+    type_id: str = Form(""),
+    db: Session = Depends(get_db),
+):
+    printer = Printer(
+        name=name.strip(),
+        location=location.strip() or None,
+        type_id=int(type_id) if type_id else None,
+    )
+    db.add(printer)
+    db.commit()
+    return RedirectResponse(url="/printers", status_code=HTTP_303_SEE_OTHER)
+
+
+@router.get("/printer-types", response_class=HTMLResponse)
+def printer_types_page(request: Request, db: Session = Depends(get_db)):
+    return templates.TemplateResponse("printer_types.html", {
+        "request": request,
+        "active": "printers",
+        "printer_types": db.query(PrinterType).order_by(PrinterType.name).all(),
+    })
+
+
+@router.post("/printer-types")
+def create_printer_type(
+    name: str = Form(...),
+    bed_x_mm: int = Form(...),
+    bed_y_mm: int = Form(...),
+    bed_z_mm: int = Form(...),
+    db: Session = Depends(get_db),
+):
+    pt = PrinterType(name=name.strip(), bed_x_mm=bed_x_mm, bed_y_mm=bed_y_mm, bed_z_mm=bed_z_mm)
+    db.add(pt)
+    db.commit()
+    return RedirectResponse(url="/printer-types", status_code=HTTP_303_SEE_OTHER)
+
+
 @router.get("/jobs", response_class=HTMLResponse)
 def jobs_page(request: Request, db: Session = Depends(get_db)):
     return templates.TemplateResponse("jobs.html", {