Switche: optionaler SSH-Port statt fest 22

- Neue Spalte switches.ssh_port (nullable INTEGER), Migration für
  bestehende DBs in _ensure_schema(), Feld in create_db.py ergänzt.
- Formular (Anlegen/Bearbeiten): optionales SSH-Port-Feld, Validierung
  1-65535, leer -> NULL (= Standard 22 überall, SWITCH_DEFAULT_SSH_PORT).
  Switch-Liste zeigt den effektiven Port inkl. "(Standard)"-Hinweis.
- generate_ips.py liefert den effektiven Port (Fallback 22) als eigenes
  Pipe-Feld an poe.sh; poe.sh übernimmt es in disable_poe/enable_poe und
  reicht es als "ssh -p <port>" an die expect-Skripte durch (Default
  weiterhin 22 falls Parameter fehlt).
- Web-Terminal (Verbindungstest) sendet den im Formular eingetragenen
  Port statt hartkodiert 22.
- Live getestet: gültiger/leerer/ungültiger Port beim Anlegen, korrekte
  Weitergabe durch generate_ips.py inkl. Feldreihenfolge, die poe.sh
'read' erwartet.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

srv/poe_manager/templates/switches.html

@@ -37,15 +37,20 @@
       <tr>
         <th data-sort-key="hostname">Hostname</th>
         <th data-sort-key="ip">IP-Adresse</th>
+        <th data-sort-key="ssh_port">SSH-Port</th>
         <th data-sort-key="credential">Zugangsdaten</th>
         <th style="width:1%;">Aktionen</th>
       </tr>
     </thead>
     <tbody>
       {% for s in switches %}
-      <tr data-sort-hostname="{{ s['hostname']|lower }}" data-sort-ip="{{ s['ip']|lower }}" data-sort-credential="{{ (s['credential_name'] or '')|lower }}">
+      <tr data-sort-hostname="{{ s['hostname']|lower }}" data-sort-ip="{{ s['ip']|lower }}" data-sort-ssh_port="{{ s['ssh_port'] or 22 }}" data-sort-credential="{{ (s['credential_name'] or '')|lower }}">
         <td class="cell-name">{{ s['hostname'] }}</td>
         <td class="mono">{{ s['ip'] }}</td>
+        <td class="mono">
+          {{ s['ssh_port'] or 22 }}
+          {% if not s['ssh_port'] %}<span class="text-faint" style="font-size:11px;">(Standard)</span>{% endif %}
+        </td>
         <td>
           {% if s['credential_name'] %}
           {{ s['credential_name'] }} <span class="text-faint mono" style="font-size:11.5px;">({{ s['credential_username'] }})</span>
@@ -89,6 +94,10 @@
                 <input type="text" name="ip" value="{{ s['ip'] }}" required placeholder="z.B. 192.168.1.100">
                 <div class="invalid-feedback">Bitte eine gültige IP-Adresse eingeben.</div>
               </div>
+              <div class="field"><label>SSH-Port</label>
+                <input type="number" name="ssh_port" value="{{ s['ssh_port'] or '' }}" min="1" max="65535" placeholder="22 (Standard)">
+                <div class="field-hint">Leer lassen, wenn der Switch den Standard-Port 22 verwendet.</div>
+              </div>
               <div class="field">
                 <label>Zugangsdaten</label>
                 <select name="credential_choice" class="credential-select" onchange="toggleNewCredentialFields(this)">
@@ -127,7 +136,7 @@
       </div>
       {% endif %}
       {% else %}
-      <tr class="empty-row"><td colspan="4">Noch keine Switche vorhanden.</td></tr>
+      <tr class="empty-row"><td colspan="5">Noch keine Switche vorhanden.</td></tr>
       {% endfor %}
     </tbody>
   </table>
@@ -152,6 +161,10 @@
           <input type="text" name="ip" required placeholder="z.B. 192.168.1.100">
           <div class="invalid-feedback">Bitte eine gültige IP-Adresse eingeben.</div>
         </div>
+        <div class="field"><label>SSH-Port</label>
+          <input type="number" name="ssh_port" min="1" max="65535" placeholder="22 (Standard)">
+          <div class="field-hint">Leer lassen, wenn der Switch den Standard-Port 22 verwendet.</div>
+        </div>
         <div class="field">
           <label>Zugangsdaten</label>
           <select name="credential_choice" class="credential-select" onchange="toggleNewCredentialFields(this)">
@@ -300,6 +313,7 @@ function getCredentialInfo(form) {
 
 function openTerminal(form) {
     const host = (form.querySelector("input[name='ip']") || {}).value?.trim();
+    const port = parseInt((form.querySelector("input[name='ssh_port']") || {}).value, 10) || 22;
     const { username, passwordInput } = getCredentialInfo(form);
     activePasswordInput = passwordInput;
 
@@ -311,7 +325,7 @@ function openTerminal(form) {
     PoeUI.openModal("terminalModal");
     ensureTerminal();
     term.reset();
-    document.getElementById("termTarget").innerText = `${username}@${host}`;
+    document.getElementById("termTarget").innerText = `${username}@${host}:${port}`;
     setTermStatus("Verbinde…", "unknown");
     setTimeout(() => fitAddon && fitAddon.fit(), 60);
 
@@ -321,7 +335,7 @@ function openTerminal(form) {
     termSocket = new WebSocket(`${proto}//${location.host}/ws/ssh_terminal`);
 
     termSocket.onopen = () => {
-        termSocket.send(JSON.stringify({ host, username, port: 22 }));
+        termSocket.send(JSON.stringify({ host, username, port }));
         setTermStatus("Verbunden", "online");
     };
     termSocket.onmessage = (event) => term.write(event.data);