Replace internal todos with Vikunja API wrapper

- New app/vikunja.py: get_tasks, create_task, update_task, delete_task
- /todos page now reads from and writes to Vikunja (create, mark done, delete)
- Auto-todos (clean build plate, filament low) post to Vikunja after DB commit
- /api/todos router proxies to Vikunja
- .env.install: VIKUNJA_URL, VIKUNJA_API_TOKEN, VIKUNJA_PROJECT_ID

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

.env.install

@@ -6,6 +6,9 @@ MYSQL_PASSWORD=
 STL_UPLOAD_DIR=/data/stl
 TZ=Europe/Berlin
 FILAMENTDB_URL=https://web.filamentdb.orb.local
+VIKUNJA_URL=https://vikunja.example.com
+VIKUNJA_API_TOKEN=
+VIKUNJA_PROJECT_ID=
 VAT_RATE=19
 FILAMENT_PRICE_PER_KG=15
 MATERIAL_FACTOR=0.50

app/routers/todos.py

@@ -1,21 +1,24 @@
-from fastapi import APIRouter, Depends
+from fastapi import APIRouter
-from sqlalchemy.orm import Session
+from app.vikunja import create_task, delete_task, get_tasks, update_task
-
-from app.db import get_db
-from app.models.todo import Todo
 
 router = APIRouter(prefix="/todos", tags=["todos"])
 
 
 @router.get("/")
-def list_todos(db: Session = Depends(get_db)):
+def list_todos():
-    return [t.to_dict() for t in db.query(Todo).all()]
+    return get_tasks()
 
 
-@router.get("/{todo_id}")
+@router.post("/")
-def get_todo(todo_id: int, db: Session = Depends(get_db)):
+def create_todo(body: dict):
-    todo = db.query(Todo).filter(Todo.id == todo_id).first()
+    return create_task(body.get("title", ""))
-    if not todo:
+
-        from fastapi import HTTPException
+
-        raise HTTPException(status_code=404, detail="Todo not found")
+@router.post("/{task_id}")
-    return todo.to_dict()
+def update_todo(task_id: int, body: dict):
+    update_task(task_id, **body)
+
+
+@router.delete("/{task_id}")
+def delete_todo(task_id: int):
+    delete_task(task_id)

app/routers/ui.py

@@ -20,7 +20,7 @@ from app.models.printer import Printer, PrinterStatus
 from app.models.printer_log import PrinterLog
 from app.models.printer_type import PrinterType
 from app.models.pricing import PricingConfig
-from app.models.todo import Todo
+from app.vikunja import create_task as vikunja_create, delete_task as vikunja_delete, get_tasks as vikunja_tasks, update_task as vikunja_update
 from app.constants import COLORS, MATERIALS
 from app.estimation import estimate  # also used in start_job
 from app.filamentdb import (available_colors, available_materials, find_matching_ams_roll,
@@ -353,6 +353,7 @@ def start_job(job_id: int, printer_id: int = Form(...), db: Session = Depends(ge
             if roll:
                 note = (f"POPS {job.job_uuid[:8] if job.job_uuid else job.id}: "
                         f"{job.file_name or job.name} on {printer.name}")
+                filament_low = False
                 if log_print_on_roll(roll["roll_id"], weight_g, note):
                     db.add(JobLog(job_id=job_id, message=(
                         f"FilamentDB: logged {weight_g} g against roll #{roll['roll_id']} "
@@ -360,7 +361,7 @@ def start_job(job_id: int, printer_id: int = Form(...), db: Session = Depends(ge
                         f"{roll['weight_remaining_g']} g remaining, least-full roll selected)"
                     )))
                     if roll["weight_remaining_g"] - weight_g < 100:
-                        db.add(Todo(title="Check filament status"))
+                        filament_low = True
                 else:
                     db.add(JobLog(job_id=job_id, message=f"FilamentDB: print log failed for roll #{roll['roll_id']}"))
             else:
@@ -369,6 +370,8 @@ def start_job(job_id: int, printer_id: int = Form(...), db: Session = Depends(ge
                 )))
 
     db.commit()
+    if filament_low:
+        vikunja_create("Check filament status")
     return RedirectResponse(url=f"/jobs/{job_id}", status_code=HTTP_303_SEE_OTHER)
 
 
@@ -426,15 +429,18 @@ def finish_job(job_id: int, db: Session = Depends(get_db)):
     db.add(JobLog(job_id=job_id, message=f"Job finished on {printer_name}"))
 
     # Every 3rd completed print on this printer → cleaning reminder
+    cleaning_todo = False
     if job.printer_id:
         done_count = db.query(PrintJob).filter(
             PrintJob.printer_id == job.printer_id,
             PrintJob.status == JobStatus.done,
         ).count()
         if (done_count + 1) % 3 == 0:
-            db.add(Todo(title=f"Clean build plate on {printer_name}", printer_id=job.printer_id))
+            cleaning_todo = True
 
     db.commit()
+    if cleaning_todo:
+        vikunja_create(f"Clean build plate on {printer_name}")
     return RedirectResponse(url=f"/jobs/{job_id}", status_code=HTTP_303_SEE_OTHER)
 
 
@@ -485,17 +491,37 @@ def bracket_detail_redirect(bracket_id: int):
     return RedirectResponse(url=f"/jobs?bracket_id={bracket_id}", status_code=HTTP_303_SEE_OTHER)
 
 
-# ── To-Do ──────────────────────────────────────────────────────────────────────
+# ── To-Do (Vikunja) ────────────────────────────────────────────────────────────
 
 @router.get("/todos", response_class=HTMLResponse)
-def todos_page(request: Request, db: Session = Depends(get_db)):
+def todos_page(request: Request):
+    tasks = vikunja_tasks()
+    tasks.sort(key=lambda t: (t.get("done", False), t.get("created", "")), reverse=False)
     return templates.TemplateResponse("todos.html", {
         "request": request,
         "active": "todos",
-        "todos": db.query(Todo).order_by(Todo.done, Todo.created_at.desc()).all(),
+        "todos": tasks,
     })
 
 
+@router.post("/todos")
+def create_todo(title: str = Form(...)):
+    vikunja_create(title.strip())
+    return RedirectResponse(url="/todos", status_code=HTTP_303_SEE_OTHER)
+
+
+@router.post("/todos/{task_id}/done")
+def done_todo(task_id: int):
+    vikunja_update(task_id, done=True)
+    return RedirectResponse(url="/todos", status_code=HTTP_303_SEE_OTHER)
+
+
+@router.post("/todos/{task_id}/delete")
+def delete_todo(task_id: int):
+    vikunja_delete(task_id)
+    return RedirectResponse(url="/todos", status_code=HTTP_303_SEE_OTHER)
+
+
 # ── Pricing ────────────────────────────────────────────────────────────────────
 
 @router.get("/pricing", response_class=HTMLResponse)

app/templates/todos.html

@@ -2,39 +2,63 @@
 {% block title %}To-Do — POPS{% endblock %}
 
 {% block content %}
-<h5 class="text-white mb-4">To-Do</h5>
+<div class="d-flex align-items-center justify-content-between mb-4">
+  <h5 class="text-white mb-0">To-Do</h5>
+</div>
+
+{# ── Add task ── #}
+<form method="POST" action="/todos" class="mb-3 d-flex gap-2" style="max-width:480px">
+  <input type="text" name="title" required
+         class="form-control form-control-sm bg-dark border-secondary text-white"
+         placeholder="New task…">
+  <button type="submit" class="btn btn-sm btn-primary px-3">Add</button>
+</form>
+
 <div class="card">
   {% if todos %}
-  <table class="table table-dark table-hover mb-0 align-middle">
+  <table class="table table-dark table-hover mb-0 align-middle" style="font-size:.875rem">
     <thead>
       <tr class="text-secondary small">
+        <th class="fw-normal" style="width:32px"></th>
         <th class="fw-normal">Task</th>
-        <th class="fw-normal">Printer</th>
-        <th class="fw-normal text-center">Done</th>
         <th class="fw-normal text-end">Created</th>
+        <th class="fw-normal" style="width:40px"></th>
       </tr>
     </thead>
     <tbody>
     {% for t in todos %}
-    <tr class="{% if t.done %}opacity-50{% endif %}">
+    {% set done = t.done %}
-      <td class="{% if t.done %}text-decoration-line-through text-secondary{% else %}text-white{% endif %}">
+    <tr class="{% if done %}opacity-50{% endif %}">
-        {{ t.title }}
+      <td>
-      </td>
+        {% if done %}
-      <td class="text-secondary small">{{ t.printer.name if t.printer else '—' }}</td>
-      <td class="text-center">
-        {% if t.done %}
           <i class="bi bi-check-circle-fill text-success"></i>
         {% else %}
-          <i class="bi bi-circle text-secondary"></i>
+        <form method="POST" action="/todos/{{ t.id }}/done" class="m-0">
+          <button type="submit" class="btn btn-link p-0 text-secondary" title="Mark done">
+            <i class="bi bi-circle"></i>
+          </button>
+        </form>
         {% endif %}
       </td>
-      <td class="text-secondary small text-end">{{ t.created_at.strftime('%d.%m.%Y') }}</td>
+      <td class="{% if done %}text-decoration-line-through text-secondary{% else %}text-white{% endif %}">
+        {{ t.title }}
+      </td>
+      <td class="text-secondary small text-end text-nowrap">
+        {{ t.created[:10] if t.created else '—' }}
+      </td>
+      <td>
+        <form method="POST" action="/todos/{{ t.id }}/delete" class="m-0 text-end">
+          <button type="submit" class="btn btn-link p-0 text-secondary" title="Delete">
+            <i class="bi bi-trash3"></i>
+          </button>
+        </form>
+      </td>
     </tr>
     {% endfor %}
     </tbody>
   </table>
   {% else %}
-  <div class="card-body text-secondary">No to-do items yet.</div>
+  <div class="card-body text-secondary">No tasks. Nice.</div>
   {% endif %}
 </div>
 {% endblock %}

app/vikunja.py

@@ -0,0 +1,81 @@
+"""Vikunja task API client."""
+import logging
+import os
+
+import httpx
+
+logger = logging.getLogger("pops")
+
+
+def _base() -> str:
+    return os.environ.get("VIKUNJA_URL", "").rstrip("/")
+
+
+def _headers() -> dict:
+    return {
+        "Authorization": f"Bearer {os.environ.get('VIKUNJA_API_TOKEN', '')}",
+        "Content-Type": "application/json",
+    }
+
+
+def _project_id() -> int:
+    return int(os.environ.get("VIKUNJA_PROJECT_ID", 0))
+
+
+def get_tasks() -> list[dict]:
+    try:
+        r = httpx.get(
+            f"{_base()}/api/v1/projects/{_project_id()}/tasks",
+            headers=_headers(),
+            params={"sort_by": "created", "order_by": "desc"},
+            timeout=5,
+        )
+        r.raise_for_status()
+        return r.json() or []
+    except Exception:
+        logger.warning("Vikunja: failed to fetch tasks")
+        return []
+
+
+def create_task(title: str) -> dict | None:
+    try:
+        r = httpx.put(
+            f"{_base()}/api/v1/projects/{_project_id()}/tasks",
+            headers=_headers(),
+            json={"title": title},
+            timeout=5,
+        )
+        r.raise_for_status()
+        return r.json()
+    except Exception:
+        logger.warning("Vikunja: failed to create task %r", title)
+        return None
+
+
+def update_task(task_id: int, **fields) -> bool:
+    try:
+        r = httpx.post(
+            f"{_base()}/api/v1/tasks/{task_id}",
+            headers=_headers(),
+            json=fields,
+            timeout=5,
+        )
+        r.raise_for_status()
+        return True
+    except Exception:
+        logger.warning("Vikunja: failed to update task %s", task_id)
+        return False
+
+
+def delete_task(task_id: int) -> bool:
+    try:
+        r = httpx.delete(
+            f"{_base()}/api/v1/tasks/{task_id}",
+            headers=_headers(),
+            timeout=5,
+        )
+        r.raise_for_status()
+        return True
+    except Exception:
+        logger.warning("Vikunja: failed to delete task %s", task_id)
+        return False