Multiple printers, printer/slot in Spoolman, kept in sync

- One worker per printer (name, IP, CC2 Control URL, own pinned host key);
  a spool sits in at most one slot of one printer, moves between printers
- Spoolman: location "<printer> Slot N" plus extra fields "drucker"/"slot"
  (created by the bridge), cleared and "Lager" on removal
- Full comparison every minute: the printer wins over manual edits of loaded
  spools; stale printer locations go to storage; own locations untouched
- Automatic migration of v1 settings, state and host key
- Status hint when a tag is still in a tray but unmapped (e.g. after
  "Take out" in CC2 Control)
- SSH test: connection drops during exec give a clean error, not a 500
- Mock environment with several printers; tests for all of the above

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014GcEk5tkfFSYD6NTF66NkC

app/templates/status.html

@@ -2,8 +2,7 @@
 {% block title %}CC2 Bridge – Status{% endblock %}
 {% block content %}
 <div id="banners"></div>
-<h2>Canvas-Slots</h2>
-<div class="grid" id="slots"><div class="panel muted">Lade …</div></div>
+<div id="printers"><div class="panel muted">Lade …</div></div>
 <p class="small muted" id="lastpoll"></p>
 <h2>Protokoll</h2>
 <div class="panel table-wrap">
@@ -21,7 +20,7 @@ function colorOf(ch) {
   return /^[0-9a-f]{6}$/i.test(c) ? c : null;
 }
 
-function slotCard(s) {
+function slotCard(p, s) {
   const ch = s.record.channel || {};
   const tray = TRAY[s.tray_status];
   const col = colorOf(ch);
@@ -37,9 +36,11 @@ function slotCard(s) {
       : (m.cc2 ? '<span class="tag warn">nicht zugewiesen</span>' : '<span class="tag warn">noch nicht angelegt</span>');
   }
   if (s.cc2_question) assign += ` <span class="tag warn">CC2 fragt: ${esc(s.cc2_question)}</span>`;
+  const orphan = !m && s.record.spool_id != null && (s.tray_status === 1 || s.tray_status === 2);
   const lb = s.last_booking;
   return `<div class="panel">
     <h3>Slot ${s.slot + 1} ${tray ? `<span class="tag ${tray[1]}">${tray[0]}</span>` : ''}</h3>
+    <p class="small muted" style="margin:-4px 0 8px">Ort in Spoolman: ${esc(s.location)}</p>
     <dl class="kv">
       <dt>Tag</dt><dd>${tag}</dd>
       <dt>Tag-ID</dt><dd>${s.record.spool_id ?? '<span class="muted">–</span>'}</dd>
@@ -48,25 +49,30 @@ function slotCard(s) {
       <dt>CC2 Control</dt><dd>${cc ? esc(cc.name) + ` <span class="small muted">Rest ${Number(cc.remaining).toFixed(1)} g</span><br>` : ''}${assign}</dd>
       <dt>Buchung</dt><dd>${lb ? `${lb.grams.toFixed(2)} g <span class="small muted">${fmtTime(lb.time)}</span>` : '<span class="muted">–</span>'}</dd>
     </dl>
+    ${orphan ? `<p class="small" style="margin:10px 0 0;color:var(--warn)">Tag ${s.record.spool_id} steckt noch, ist aber keinem Slot zugeordnet
+      (z. B. nach „Take out“ in CC2 Control). Verbrauch wird so nicht gezählt – zum Zuordnen die Spule neu einlegen und scannen.</p>` : ''}
     ${m ? `<div class="row" style="margin-top:10px">
-      <button onclick="slotAction(${s.slot}, 'reassign')">Zuordnung erneut senden</button>
-      <button class="danger" onclick="slotAction(${s.slot}, 'release')">Aufheben</button></div>` : ''}
+      <button onclick="slotAction('${p.id}', ${s.slot}, 'reassign')">Zuordnung erneut senden</button>
+      <button class="danger" onclick="slotAction('${p.id}', ${s.slot}, 'release')">Aufheben</button></div>` : ''}
   </div>`;
 }
 
-async function slotAction(slot, action) {
+let NAMES = {};
+async function slotAction(pid, slot, action) {
+  const name = NAMES[pid] || pid;
   const text = action === 'release'
-    ? `Zuordnung von Slot ${slot + 1} aufheben? Die Spule wird in Spoolman ins Lager gebucht.`
-    : `Zuordnung von Slot ${slot + 1} erneut an CC2 Control senden?`;
+    ? `${name}: Zuordnung von Slot ${slot + 1} aufheben? Die Spule wird in Spoolman ins Lager gebucht.`
+    : `${name}: Zuordnung von Slot ${slot + 1} erneut an CC2 Control senden?`;
   if (!confirm(text)) return;
-  try { await api('POST', `/api/slots/${slot}/${action}`); toast('Eingereiht'); setTimeout(load, 800); }
+  try { await api('POST', `/api/printers/${pid}/slots/${slot}/${action}`); toast('Eingereiht'); setTimeout(load, 800); }
   catch (e) { toast(e.message); }
 }
 
-async function enableCC2() {
-  if (!confirm('Spulenverwaltung in CC2 Control einschalten?\n\nAb dann zählt CC2 Control den Verbrauch je Slot.')) return;
+async function enableCC2(pid) {
+  const name = NAMES[pid] || pid;
+  if (!confirm(`Spulenverwaltung in CC2 Control von ${name} einschalten?\n\nAb dann zählt CC2 Control den Verbrauch je Slot.`)) return;
   try {
-    const r = await api('POST', '/api/cc2/enable', { confirm: true });
+    const r = await api('POST', `/api/printers/${pid}/cc2/enable`, { confirm: true });
     toast(r.dry_run ? 'Dry-Run: nur protokolliert' : 'Wird eingeschaltet');
     setTimeout(load, 1500);
   } catch (e) { toast(e.message); }
@@ -79,12 +85,19 @@ async function load() {
   const b = [];
   if (st.dry_run) b.push('<div class="banner dry">Dry-Run aktiv: Schreibaktionen werden nur protokolliert („würde …“). Umschalten unter Einstellungen.</div>');
   if (!st.ssh_key) b.push('<div class="banner warn">Kein SSH-Schlüssel hinterlegt. <a href="/settings">Einstellungen</a></div>');
-  else if (!st.host_key) b.push('<div class="banner warn">Host-Key des Druckers noch nicht bestätigt. <a href="/settings">Verbindung testen</a></div>');
-  if (st.cc2_enabled === false) b.push('<div class="banner err"><b>Spulenverwaltung in CC2 Control ist ausgeschaltet.</b> Verbrauch wird nicht gezählt. <button class="primary" onclick="enableCC2()">Einschalten …</button></div>');
-  if (st.job_active) b.push('<div class="banner ok">Druck läuft – Verbrauch wird nach dem Druck gebucht.</div>');
-  for (const [k, v] of Object.entries(st.errors || {})) if (v) b.push(`<div class="banner err">${esc(v)}</div>`);
+  if (st.spoolman_error) b.push(`<div class="banner err">${esc(st.spoolman_error)}</div>`);
   $('banners').innerHTML = b.join('');
-  if (st.slots) $('slots').innerHTML = st.slots.map(slotCard).join('');
+  NAMES = Object.fromEntries((st.printers || []).map((p) => [p.id, p.name]));
+  if (st.printers) $('printers').innerHTML = st.printers.map((p) => {
+    const pb = [];
+    if (!p.enabled) pb.push('<div class="banner warn">Abfrage pausiert (in den Einstellungen deaktiviert).</div>');
+    else if (st.ssh_key && !p.host_key) pb.push('<div class="banner warn">Host-Key noch nicht bestätigt. <a href="/settings">Verbindung testen</a></div>');
+    if (p.cc2_enabled === false) pb.push(`<div class="banner err"><b>Spulenverwaltung in CC2 Control ist ausgeschaltet.</b> Verbrauch wird nicht gezählt. <button class="primary" onclick="enableCC2('${p.id}')">Einschalten …</button></div>`);
+    if (p.job_active) pb.push('<div class="banner ok">Druck läuft – Verbrauch wird nach dem Druck gebucht.</div>');
+    for (const v of Object.values(p.errors || {})) if (v) pb.push(`<div class="banner err">${esc(v)}</div>`);
+    return `<h2>${esc(p.name)} <span class="small muted" style="font-weight:400">${esc(p.host)}</span></h2>${pb.join('')}
+      <div class="grid">${p.slots.map((s) => slotCard(p, s)).join('')}</div>`;
+  }).join('') || '<div class="panel muted">Kein Drucker eingerichtet. <a href="/settings">Einstellungen</a></div>';
   $('lastpoll').textContent = st.last_poll ? 'Letzte Abfrage: ' + fmtTime(st.last_poll) : 'Noch keine Abfrage';
   $('log').innerHTML = (st.log || []).map((e) => {
     const l = LEVEL[e.level] || [e.level, ''];