Update CHANGELOG and documentation for Task Hygiene improvements; enhance error handling in anycubic_lan.py; add Anycubic task display in wand.html.

CHANGELOG.md

@@ -6,8 +6,10 @@ Alle Änderungen an Grotti. Format nach [Keep a Changelog](https://keepachangelo
 
 ### Neu
 
+- Task-Hygiene wie Rinkhals (Kobra 3 und S1): `ensure_task_free` vor MQTT- und Moonraker-Start; bei Report **10101** einmal cancel + Retry; klarere Codes (**10101**, **10107**); LAN-Ausfall weich (negativer Cache).
+- Live-Snapshot `anycubic_task` (gkapi-State/task_id) auf der Wand.
 - Cursor-Regel `.cursor/rules/grotti.mdc` (Changelog, Doku, Version, Sicherheit).
-- Doku [Anycubic-Stack](docs/Anycubic-Stack.md): Schichten gklib/gkapi/Rinkhals, MQTT Start/Stop/10101, ACE/`.acm`, FIRMWARE_RESTART — aus Klipper-go und Rinkhals-Quellcode.
+- Doku [Anycubic-Stack](docs/Anycubic-Stack.md): Schichten gklib/gkapi/Rinkhals, MQTT Start/Stop/10101, ACE/`.acm`, FIRMWARE_RESTART — aus Klipper-go und Rinkhals-Quellcode; Abschnitt Task-Hygiene.
 - Doku [Glossar](docs/Glossar.md): Moonraker, Mainsail, gklib, Rinkhals, OctoPrint und Nachbarn.
 
 ## [2.0.0] – 2026-10-15

docs/Anycubic-Stack.md

@@ -65,6 +65,21 @@ Aus Rinkhals-Doku `firmware/mqtt.md` und `kobra.py`:
 
 Moonraker `/printer/print/cancel` trifft nur gklib (`print_stats` → `cancelled`). Der Anycubic-Task in gkapi bleibt → nächster MQTT-Start mit **code 10101** („Print task already exists“ / chinesische Meldung). Rinkhals `mqtt_print_file` kennt 10101 und **retryt einmal**; Grotti sendet bei Abbruch Moonraker-cancel **und** MQTT-stop.
 
+### Task-Hygiene (wie Rinkhals)
+
+Vorbild: `kobra.py` `mqtt_print_file` + `firmware/mqtt.md`. **Kobra 3 und Kobra S1** — dieselbe gkapi-API (`:18910` / MQTTS `:9883`). Gemessen 15.10.2026: S1 `modelId` 20025 / `state: free`, K3 `modelId` 20024; `project: null` zählt nicht als busy. Abräumen-Ablauf bleibt nur Kobra 3.
+
+| Schritt | Verhalten in Grotti |
+| --- | --- |
+| Vor MQTT-Start | `ensure_task_free`: `info/query`; wenn `state` nicht free oder `project` gesetzt → MQTT-stop, bis zu 3× pollen |
+| Vor Moonraker-`print/start` | dieselbe Hygiene best-effort (Rinkhals wandelt Start oft intern zu MQTT um) |
+| gkapi kurz weg | `print_info` → `None`, negativer Cache ~45 s; Start über Moonraker läuft weiter |
+| Report **10101** | einmal cancel + 1,5 s Pause + erneuter Start |
+| Report **10107** | klare Filament-Meldung |
+| Live | Snapshot-Feld `anycubic_task` (`state`, `task_id`, `filename`) aus gecachtem `print_info` (TTL ~10 s); Wand zeigt die Zeile |
+
+Codes und Retry: `grotti/anycubic_lan.py` (`message_for_code`, `ensure_task_free`, `start_print`).
+
 ### Report-Timeout
 
 `kobra.py` wartet max. 30 s auf `print/report`. Nach Bettnetz/`auto_leveling` kann der Report später kommen, der Druck trotzdem laufen (`info/query` → `project.task_id`). Grotti prüft bei Timeout deshalb `print_info` (MQTT `info/query`).

docs/Senden-Queue.md

@@ -1,6 +1,6 @@
 # Grotti: Senden und Start dauert
 
-Stand **14.10.2026** (Stack-Quellen 15.10.2026 in [Anycubic-Stack](Anycubic-Stack)). Spulen kommen vom Ziel-Drucker zur Startzeit (`ace_map` + eingelegte Rolle), nicht aus einem freien Dropdown. `sends` speichert `ace_map` und Bettnetz für „Nochmal“.
+Stand **15.10.2026** (Stack-Quellen und Task-Hygiene in [Anycubic-Stack](Anycubic-Stack)). Spulen kommen vom Ziel-Drucker zur Startzeit (`ace_map` + eingelegte Rolle), nicht aus einem freien Dropdown. `sends` speichert `ace_map` und Bettnetz für „Nochmal“.
 
 ## Warum Sekunden / Minuten
 
@@ -71,6 +71,10 @@ Credentials holt Grotti ohne SSH: `GET :18910/info` → signiertes `POST :18910/
 
 **Abbruch:** Grotti `abbrechen` = Moonraker `/printer/print/cancel` **plus** MQTT `action: stop` / `taskid: "-1"` (gleicher Topic wie Start). Nur Moonraker-cancel lässt den Anycubic-Task stehen → nächster MQTT-Start mit **10101**. 13.10.2026: Gridfinity auf da26 so hängen geblieben, per MQTT-stop freigemacht (`data.state: free`).
 
+### Task-Hygiene vor dem Start (15.10.2026)
+
+Vor jedem Start (MQTT und reiner Moonraker-Pfad) räumt Grotti einen hängenden gkapi-Task best-effort — **Kobra 3 und S1**: `print_info` → ggf. MQTT-stop → poll. Kommt trotzdem **10101**, einmal cancel + 1,5 s + Retry (wie Rinkhals). Ist gkapi kurz unerreichbar, läuft der Moonraker-Start trotzdem (negativer Cache ~45 s). Live zeigt die Wand `anycubic_task` aus demselben `info/query` (Cache ~10 s). Details: [Anycubic-Stack](Anycubic-Stack) Abschnitt Task-Hygiene.
+
 **Start-Report verspätet:** 13.10.2026 ~21:35, A2 (`10.10.1.59`), Ablauf 2/5 direkt nach der Bettnetz-Prüfung. Innerhalb von 30 s kam kein `print/report`, der Druck lief trotzdem an. `info/query` (Topic `…/slicer/printer/{modelId}/{deviceId}/info`, Antwort auf `…/info/report`) zeigte `project.task_id` = Grotti-`taskid`, `state: auto_leveling`. Moonraker meldet in dieser Phase noch `print_stats.state: complete` vom Vorauftrag. Grotti prüft deshalb bei einem Start-Timeout bis zu dreimal `info/query`. Steht dort die eigene `taskid`, gilt der Start als erfolgreich (`anycubic_lan.print_info`).
 
 Fallback ohne MQTT: global in Rinkhals Touch → Manage apps → 40-moonraker → Auto leveling (gilt dann für alle Moonraker-Starts inkl. Mainsail/Orca).

grotti/anycubic_lan.py

@@ -24,13 +24,23 @@ from cryptography.hazmat.primitives import padding
 from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
 
 CRED_TTL = 300
+INFO_TTL = 10
+FAIL_TTL = 45
 _CRED_CACHE = {}
+_INFO_CACHE = {}
+_FAIL_CACHE = {}
+
+# Anycubic MQTT-Report-Codes (Rinkhals kobra.py / mqtt.md)
+# Gilt für Kobra 3 und Kobra S1 (gleiche gkapi-Ports :18910 / :9883).
+CODE_TASK_ACTIVE = 10101
+CODE_FILAMENT = 10107
 
 
 class LanError(Exception):
-    def __init__(self, message):
+    def __init__(self, message, code=None):
         super().__init__(message)
         self.message = message
+        self.code = code
 
 
 def _info(host):
@@ -141,17 +151,103 @@ def normalize_ams(ams_settings):
     return {"use_ams": True, "ams_box_mapping": entries}
 
 
-def _report_error(body, default_message):
+def _parse_code(value):
-    code = body.get("code")
+    if value is None or value == "":
-    if code == 10107:
+        return None
-        return "Filament gerissen. Bitte neues laden. (code 10107)"
+    try:
-    if code == 10101:
+        return int(value)
+    except (TypeError, ValueError):
+        return value
+
+
+def message_for_code(code, default_message="Druckbefehl abgelehnt"):
+    """MQTT-Report-Code → deutsche Meldung (für Tests und UI)."""
+    parsed = _parse_code(code)
+    if parsed == CODE_FILAMENT:
+        return "Filament gerissen oder leer. Bitte neues laden. (code 10107)"
+    if parsed == CODE_TASK_ACTIVE:
         return (
-            "Alter Druckauftrag noch aktiv (Anycubic-MQTT). "
+            "Alter Druckauftrag noch aktiv (Anycubic-Task). "
-            "Bitte zuerst abbrechen. (code 10101)"
+            "Wird geräumt und ggf. erneut gestartet. (code 10101)"
+        )
+    message = str(default_message or "Druckbefehl abgelehnt")
+    if parsed is None:
+        return message
+    return "%s (code %s)" % (message, parsed)
+
+
+def _report_error(body, default_message):
+    code = _parse_code(body.get("code"))
+    raw = str(body.get("msg") or "").strip()
+    if code in (CODE_FILAMENT, CODE_TASK_ACTIVE):
+        text = message_for_code(code, default_message)
+    elif raw:
+        text = "%s%s" % (raw, (" (code %s)" % code) if code is not None else "")
+    else:
+        text = message_for_code(code, default_message)
+    return text, code
+
+
+def _task_busy(info):
+    """True, wenn gkapi einen laufenden/hängenden Task meldet."""
+    if not isinstance(info, dict):
+        return False
+    state = str(info.get("state") or "").strip().lower()
+    if state and state not in ("free", "idle", "done", ""):
+        return True
+    project = info.get("project")
+    if isinstance(project, dict) and (project.get("task_id") or project.get("filename")):
+        return True
+    return False
+
+
+def task_summary(info):
+    """Kompaktes Live-Feld aus print_info-data."""
+    if not isinstance(info, dict):
+        return None
+    project = info.get("project") if isinstance(info.get("project"), dict) else {}
+    state = str(info.get("state") or "").strip() or None
+    task_id = project.get("task_id")
+    if task_id is not None:
+        task_id = str(task_id)
+    filename = project.get("filename") or project.get("name") or None
+    if isinstance(filename, str):
+        filename = filename.replace("\\", "/").rsplit("/", 1)[-1] or None
+    if not state and not task_id and not filename:
+        return None
+    return {
+        "state": state,
+        "task_id": task_id,
+        "filename": filename,
+    }
+
+
+def ensure_task_free(host, attempts=3, wait_s=1.5):
+    """Hängenden Anycubic-Task best-effort räumen (Stop + poll).
+
+    Kobra 3 und S1. Ohne erreichbares gkapi: None (kein Fehler) — Moonraker-Start
+    darf nicht an LAN-Ausfall scheitern.
+    """
+    info = print_info(host, timeout=8, use_cache=False)
+    if info is None or not _task_busy(info):
+        return info
+    last_err = None
+    for _ in range(max(1, int(attempts))):
+        try:
+            cancel_print(host, timeout=12)
+        except LanError as exc:
+            last_err = exc
+        time.sleep(max(0.5, float(wait_s)))
+        info = print_info(host, timeout=8, use_cache=False)
+        if info is None or not _task_busy(info):
+            return info
+    raise LanError(
+        last_err.message if last_err else (
+            "Anycubic-Task ließ sich nicht freimachen (state=%s)."
+            % ((info or {}).get("state") or "?")
+        ),
+        code=getattr(last_err, "code", CODE_TASK_ACTIVE),
     )
-    message = str(body.get("msg") or default_message)
-    return "%s%s" % (message, (" (code %s)" % code) if code else "")
 
 
 def _mqtt_print(host, request, timeout=30, timeout_message="Timeout bei MQTT-Druckbefehl."):
@@ -165,7 +261,7 @@ def _mqtt_print(host, request, timeout=30, timeout_message="Timeout bei MQTT-Dru
         model_id, device_id,
     )
 
-    state = {"done": False, "error": None, "report": None}
+    state = {"done": False, "error": None, "code": None, "report": None}
 
     def on_connect(client, userdata, flags, reason_code, properties=None):
         if getattr(reason_code, "is_failure", False):
@@ -184,9 +280,13 @@ def _mqtt_print(host, request, timeout=30, timeout_message="Timeout bei MQTT-Dru
         report = str(body.get("state") or "")
         action = str(request.get("action") or "")
         if action == "start" and report in ("failed", "stoped", "stopped"):
-            state["error"] = _report_error(body, "Druckstart abgelehnt")
+            text, code = _report_error(body, "Druckstart abgelehnt")
+            state["error"] = text
+            state["code"] = code
         elif action == "stop" and report in ("failed",):
-            state["error"] = _report_error(body, "Druckabbruch abgelehnt")
+            text, code = _report_error(body, "Druckabbruch abgelehnt")
+            state["error"] = text
+            state["code"] = code
         # start: heating / leveling / printing / preheating = angenommen
         # stop: stoped / stopped / done = angenommen
         state["done"] = True
@@ -221,16 +321,26 @@ def _mqtt_print(host, request, timeout=30, timeout_message="Timeout bei MQTT-Dru
             pass
 
     if state["error"]:
-        raise LanError(state["error"])
+        raise LanError(state["error"], code=state.get("code"))
     return state["report"]
 
 
 def start_print(host, filename, auto_leveling=True, ams_settings=None, timeout=30):
-    """MQTT-Start wie Rinkhals, mit task_settings.auto_leveling 1/0."""
+    """MQTT-Start wie Rinkhals: Task freimachen, bei 10101 einmal Retry."""
     name = (filename or "").replace("\\", "/").split("/")[-1]
     if not name:
         raise LanError("Dateiname fehlt.")
 
+    try:
+        ensure_task_free(host)
+    except LanError:
+        # freimachen fehlgeschlagen — Start trotzdem versuchen (Retry fängt 10101)
+        pass
+
+    ams = normalize_ams(ams_settings)
+    timeout_message = "Timeout beim MQTT-Druckstart."
+    last_exc = None
+    for attempt in range(2):
         data = {
             "filename": name,
             "filepath": "/",
@@ -243,10 +353,8 @@ def start_print(host, filename, auto_leveling=True, ams_settings=None, timeout=3
                 "flow_calibration": 0,
             },
         }
-    ams = normalize_ams(ams_settings)
         if ams:
             data["ams_settings"] = ams
-
         request = {
             "type": "print",
             "action": "start",
@@ -254,26 +362,52 @@ def start_print(host, filename, auto_leveling=True, ams_settings=None, timeout=3
             "timestamp": int(time.time() * 1000),
             "data": data,
         }
-    timeout_message = "Timeout beim MQTT-Druckstart."
         try:
             _mqtt_print(host, request, timeout=timeout, timeout_message=timeout_message)
-    except LanError as exc:
-        # Nach Bettnetz-Prüfung kam das Start-Report schon > 30 s zu spät, der Druck lief trotzdem.
-        if exc.message != timeout_message:
-            raise
-        for attempt in range(3):
-            project = (print_info(host) or {}).get("project") or {}
-            if str(project.get("task_id") or "") == data["taskid"]:
-                break
-            time.sleep(5)
-        else:
-            raise
             return {"filename": name, "auto_leveling": bool(auto_leveling)}
+        except LanError as exc:
+            last_exc = exc
+            if exc.message == timeout_message:
+                for _ in range(3):
+                    project = (print_info(host, use_cache=False) or {}).get("project") or {}
+                    if str(project.get("task_id") or "") == data["taskid"]:
+                        return {"filename": name, "auto_leveling": bool(auto_leveling)}
+                    time.sleep(5)
+                raise
+            if exc.code == CODE_TASK_ACTIVE and attempt == 0:
+                try:
+                    cancel_print(host, timeout=12)
+                except LanError:
+                    pass
+                time.sleep(1.5)
+                continue
+            raise
+    if last_exc:
+        raise last_exc
+    raise LanError("Druckstart fehlgeschlagen.")
 
 
-def print_info(host, timeout=10):
+def print_info(host, timeout=10, use_cache=True):
-    """MQTT info/query, liefert data aus info/report (project.task_id, state …)."""
+    """MQTT info/query, liefert data aus info/report (project.task_id, state …).
+
+    Bei LAN-/MQTT-Fehler: None (kein Raise), kurz negativ cachen — Live-Wand und
+    Moonraker-Start bleiben für Kobra 3 und S1 nutzbar, wenn gkapi kurz weg ist.
+    """
+    now = time.time()
+    if use_cache:
+        cached = _INFO_CACHE.get(host)
+        if cached and now - cached[0] < INFO_TTL:
+            return cached[1]
+        fail_at = _FAIL_CACHE.get(host)
+        if fail_at and now - fail_at < FAIL_TTL:
+            return None
+
+    try:
         cred = credentials(host)
+    except LanError:
+        _FAIL_CACHE[host] = time.time()
+        return None
+
     model_id = cred["modelId"]
     device_id = cred["deviceId"]
     topic_query = "anycubic/anycubicCloud/v1/slicer/printer/%s/%s/info" % (model_id, device_id)
@@ -316,6 +450,7 @@ def print_info(host, timeout=10):
     try:
         client.connect(host, 9883, keepalive=30)
     except OSError:
+        _FAIL_CACHE[host] = time.time()
         return None
     deadline = time.time() + max(3, int(timeout))
     try:
@@ -326,9 +461,22 @@ def print_info(host, timeout=10):
             client.disconnect()
         except Exception:
             pass
+    if state["data"] is None:
+        _FAIL_CACHE[host] = time.time()
+        return None
+    _FAIL_CACHE.pop(host, None)
+    _INFO_CACHE[host] = (time.time(), state["data"])
     return state["data"]
 
 
+def anycubic_task(host, use_cache=True):
+    """Live-Zusammenfassung des gkapi-Tasks (cached), oder null."""
+    try:
+        return task_summary(print_info(host, timeout=6, use_cache=use_cache))
+    except Exception:
+        return None
+
+
 def cancel_print(host, timeout=15):
     """MQTT-Stop wie Rinkhals Docs: action stop, taskid -1 (Anycubic-Task)."""
     request = {
@@ -344,4 +492,5 @@ def cancel_print(host, timeout=15):
         timeout=timeout,
         timeout_message="Timeout beim MQTT-Druckabbruch.",
     )
+    _INFO_CACHE.pop(host, None)
     return {"mqtt": "stop", "report": report}

grotti/moonraker.py

@@ -246,12 +246,14 @@ def start_print(host, filename, bed_leveling=False, ams_settings=None):
     MQTT selbst (auto_leveling aus App-Property; ams_settings aus .acm /
     Identity-Fallback). Bei bed_leveling oder gesetzter Grotti-ams_settings
     startet Grotti per MQTTS :9883 und legt die Map explizit in die Payload.
+
+    Vor dem reinen Moonraker-Pfad: best-effort ensure_task_free — Rinkhals
+    wandelt Start oft intern zu MQTT um; hängende gkapi-Tasks (10101) blocken.
     """
     use_mqtt = bool(bed_leveling) or bool(ams_settings)
-    if not use_mqtt:
-        return post_json(host, "/printer/print/start", {"filename": filename})
     from grotti import anycubic_lan
 
+    if use_mqtt:
         try:
             return anycubic_lan.start_print(
                 host,
@@ -262,6 +264,12 @@ def start_print(host, filename, bed_leveling=False, ams_settings=None):
         except anycubic_lan.LanError as exc:
             raise PrinterError(exc.message) from exc
 
+    try:
+        anycubic_lan.ensure_task_free(host)
+    except Exception:
+        pass
+    return post_json(host, "/printer/print/start", {"filename": filename})
+
 
 def command(host, action):
     path = {
@@ -908,9 +916,20 @@ def query(host):
         "extrude_factor": extrude_factor,
         "slots": slots(host, status),
         "exclude": exclude_status(host),
+        "anycubic_task": _anycubic_task_field(host),
     }
 
 
+def _anycubic_task_field(host):
+    """gkapi-Task aus print_info (TTL-Cache in anycubic_lan), best-effort."""
+    try:
+        from grotti import anycubic_lan
+
+        return anycubic_lan.anycubic_task(host)
+    except Exception:
+        return None
+
+
 def snapshot(printers):
     def one(printer):
         card = {
@@ -935,6 +954,7 @@ def snapshot(printers):
                 "speed_factor": None,
                 "extrude_factor": None,
                 "slots": [],
+                "anycubic_task": None,
             })
             card.update(mesh_fields(printer["host"]))
         return card

grotti/version.py

@@ -1,3 +1,3 @@
 """Version von Grotti (SemVer). Bei jeder Änderung CHANGELOG.md mitführen."""
 
-__version__ = "2.0.0"
+__version__ = "2.1.0"

tests/test_anycubic_lan.py

@@ -0,0 +1,195 @@
+"""Unit-Tests für Anycubic-MQTT-Codes, Task-Hygiene und 10101-Retry."""
+
+import sys
+import time
+import unittest
+from pathlib import Path
+from unittest import mock
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT))
+
+from grotti import anycubic_lan
+from grotti.anycubic_lan import (
+    CODE_FILAMENT,
+    CODE_TASK_ACTIVE,
+    LanError,
+    ensure_task_free,
+    message_for_code,
+    start_print,
+    task_summary,
+)
+
+
+class MessageForCodeTests(unittest.TestCase):
+    def test_10101(self):
+        text = message_for_code(CODE_TASK_ACTIVE)
+        self.assertIn("10101", text)
+        self.assertIn("aktiv", text.lower())
+
+    def test_10107(self):
+        text = message_for_code(CODE_FILAMENT)
+        self.assertIn("10107", text)
+        self.assertIn("Filament", text)
+
+    def test_unknown_with_default(self):
+        text = message_for_code(99999, "Druckstart abgelehnt")
+        self.assertIn("99999", text)
+        self.assertIn("Druckstart abgelehnt", text)
+
+    def test_string_code(self):
+        self.assertEqual(
+            message_for_code("10107"),
+            message_for_code(10107),
+        )
+
+
+class ReportErrorTests(unittest.TestCase):
+    def test_report_carries_code(self):
+        text, code = anycubic_lan._report_error(
+            {"code": 10101, "msg": "Print task already exists"},
+            "Druckstart abgelehnt",
+        )
+        self.assertEqual(code, 10101)
+        self.assertIn("10101", text)
+
+    def test_raw_msg_unknown_code(self):
+        text, code = anycubic_lan._report_error(
+            {"code": 42, "msg": "irgendwas"},
+            "Druckstart abgelehnt",
+        )
+        self.assertEqual(code, 42)
+        self.assertIn("irgendwas", text)
+        self.assertIn("42", text)
+
+
+class TaskSummaryTests(unittest.TestCase):
+    def test_free(self):
+        summary = task_summary({"state": "free", "project": {}})
+        self.assertEqual(summary["state"], "free")
+        self.assertIsNone(summary["task_id"])
+
+    def test_busy_project(self):
+        summary = task_summary({
+            "state": "printing",
+            "project": {"task_id": 12345, "filename": "/tmp/foo.gcode"},
+        })
+        self.assertEqual(summary["task_id"], "12345")
+        self.assertEqual(summary["filename"], "foo.gcode")
+
+    def test_empty(self):
+        self.assertIsNone(task_summary({}))
+        self.assertIsNone(task_summary(None))
+
+
+class TaskBusyTests(unittest.TestCase):
+    def test_free_idle(self):
+        self.assertFalse(anycubic_lan._task_busy({"state": "free"}))
+        self.assertFalse(anycubic_lan._task_busy({"state": "idle"}))
+
+    def test_s1_style_null_project(self):
+        # S1 liefert project: null + last_project; last_project zählt nicht.
+        self.assertFalse(anycubic_lan._task_busy({
+            "state": "free",
+            "project": None,
+            "last_project": {"task_id": "old"},
+        }))
+
+    def test_busy_state(self):
+        self.assertTrue(anycubic_lan._task_busy({"state": "printing"}))
+        self.assertTrue(anycubic_lan._task_busy({"state": "auto_leveling"}))
+
+    def test_busy_project(self):
+        self.assertTrue(anycubic_lan._task_busy({
+            "state": "free",
+            "project": {"task_id": "9"},
+        }))
+
+
+class PrintInfoSoftFailTests(unittest.TestCase):
+    def tearDown(self):
+        anycubic_lan._FAIL_CACHE.clear()
+        anycubic_lan._INFO_CACHE.clear()
+
+    @mock.patch("grotti.anycubic_lan.credentials", side_effect=LanError("weg"))
+    def test_credentials_fail_returns_none(self, _cred):
+        self.assertIsNone(anycubic_lan.print_info("10.0.0.9", use_cache=False))
+        self.assertIn("10.0.0.9", anycubic_lan._FAIL_CACHE)
+
+    @mock.patch("grotti.anycubic_lan.credentials", side_effect=LanError("weg"))
+    def test_fail_cache_skips_retry(self, cred):
+        anycubic_lan._FAIL_CACHE["10.0.0.9"] = time.time()
+        self.assertIsNone(anycubic_lan.print_info("10.0.0.9", use_cache=True))
+        cred.assert_not_called()
+
+    @mock.patch("grotti.anycubic_lan.print_info", return_value=None)
+    def test_ensure_free_when_lan_down(self, _info):
+        self.assertIsNone(ensure_task_free("10.0.0.9"))
+
+
+class EnsureTaskFreeTests(unittest.TestCase):
+    @mock.patch("grotti.anycubic_lan.time.sleep", return_value=None)
+    @mock.patch("grotti.anycubic_lan.cancel_print")
+    @mock.patch("grotti.anycubic_lan.print_info")
+    def test_already_free(self, print_info, cancel_print, _sleep):
+        print_info.return_value = {"state": "free", "project": {}}
+        info = ensure_task_free("10.0.0.1")
+        self.assertEqual(info["state"], "free")
+        cancel_print.assert_not_called()
+
+    @mock.patch("grotti.anycubic_lan.time.sleep", return_value=None)
+    @mock.patch("grotti.anycubic_lan.cancel_print")
+    @mock.patch("grotti.anycubic_lan.print_info")
+    def test_clears_busy(self, print_info, cancel_print, _sleep):
+        print_info.side_effect = [
+            {"state": "printing", "project": {"task_id": "1"}},
+            {"state": "free", "project": {}},
+        ]
+        info = ensure_task_free("10.0.0.1", attempts=3, wait_s=0.01)
+        self.assertEqual(info["state"], "free")
+        cancel_print.assert_called_once()
+
+    @mock.patch("grotti.anycubic_lan.time.sleep", return_value=None)
+    @mock.patch("grotti.anycubic_lan.cancel_print")
+    @mock.patch("grotti.anycubic_lan.print_info")
+    def test_raises_when_stuck(self, print_info, cancel_print, _sleep):
+        print_info.return_value = {"state": "printing", "project": {"task_id": "1"}}
+        with self.assertRaises(LanError) as ctx:
+            ensure_task_free("10.0.0.1", attempts=2, wait_s=0.01)
+        self.assertEqual(cancel_print.call_count, 2)
+        self.assertIn("freimachen", ctx.exception.message)
+
+
+class StartPrintRetryTests(unittest.TestCase):
+    @mock.patch("grotti.anycubic_lan.time.sleep", return_value=None)
+    @mock.patch("grotti.anycubic_lan.ensure_task_free")
+    @mock.patch("grotti.anycubic_lan.cancel_print")
+    @mock.patch("grotti.anycubic_lan._mqtt_print")
+    def test_retry_on_10101(self, mqtt_print, cancel_print, ensure_free, _sleep):
+        ensure_free.return_value = {"state": "free"}
+        mqtt_print.side_effect = [
+            LanError(message_for_code(CODE_TASK_ACTIVE), code=CODE_TASK_ACTIVE),
+            {"state": "printing"},
+        ]
+        result = start_print("10.0.0.1", "demo.gcode", auto_leveling=False)
+        self.assertEqual(result["filename"], "demo.gcode")
+        self.assertEqual(mqtt_print.call_count, 2)
+        cancel_print.assert_called_once()
+
+    @mock.patch("grotti.anycubic_lan.time.sleep", return_value=None)
+    @mock.patch("grotti.anycubic_lan.ensure_task_free")
+    @mock.patch("grotti.anycubic_lan._mqtt_print")
+    def test_no_retry_on_filament(self, mqtt_print, ensure_free, _sleep):
+        ensure_free.return_value = {"state": "free"}
+        mqtt_print.side_effect = LanError(
+            message_for_code(CODE_FILAMENT),
+            code=CODE_FILAMENT,
+        )
+        with self.assertRaises(LanError) as ctx:
+            start_print("10.0.0.1", "demo.gcode")
+        self.assertEqual(ctx.exception.code, CODE_FILAMENT)
+        self.assertEqual(mqtt_print.call_count, 1)
+
+
+if __name__ == "__main__":
+    unittest.main()

web/templates/wand.html

@@ -435,11 +435,26 @@ function factsHtml(printer) {
     ${chamberFan ? "<span class=\"fact-ico\">" + icon("fan-chamber") + " Bauraum <b>" + chamberFan + "</b></span>" : ""}
     ${auxFan ? "<span class=\"fact-ico\">" + icon("fan-aux") + " Aux <b>" + auxFan + "</b></span>" : ""}
     ${speed ? "<span>Speed <b>" + speed + "</b></span>" : ""}
+    ${anycubicTaskLine(printer)}
     <span>Host <b>${escapeHtml(printer.host)}</b></span>
     ${printer.message && printer.ok === false ? `<p class="msg">${escapeHtml(printer.message)}</p>` : ""}
   `;
 }
 
+function anycubicTaskLine(printer) {
+  const task = printer.anycubic_task;
+  if (!task || typeof task !== "object") return "";
+  const state = String(task.state || "").trim();
+  const tid = task.task_id != null && String(task.task_id).trim() ? String(task.task_id) : "";
+  const file = task.filename ? String(task.filename) : "";
+  if (!state && !tid && !file) return "";
+  const bits = [];
+  if (state) bits.push(state);
+  if (tid) bits.push("task " + tid);
+  if (file) bits.push(file);
+  return "<span>Anycubic <b>" + escapeHtml(bits.join(" · ")) + "</b></span>";
+}
+
 function jobLineVisible(printer, state) {
   return !!printer.filename && state !== "standby" && state !== "offline";
 }