Add ticket tags system, tag filtering, and auto-close feature

- Fix tickets API endpoint: add type, customer_name, customer_id, tags fields
- Add tags array to ticket data structure with add/remove UI
- Add tag filter input to toolbar and tag column in ticket list
- Add ticket_tags API endpoint for updating tags
- Add set_tags and auto_close_days actions to auto-rules
- Auto-close check runs on ticket list load, closes expired tickets
- Add tag CSS styles with editable tag badges in detail view

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

index.html

@@ -261,6 +261,7 @@
                             <option value="odottaa">Odottaa vastausta</option>
                             <option value="ratkaistu">Ratkaistu</option>
                         </select>
+                        <input type="text" id="ticket-tag-filter" placeholder="#tagi" style="padding:9px 12px;border:2px solid #e0e0e0;border-radius:8px;font-size:0.88rem;max-width:140px;">
                         <label style="display:flex;align-items:center;gap:0.4rem;font-size:0.85rem;color:#777;cursor:pointer;white-space:nowrap;">
                             <input type="checkbox" id="ticket-show-closed"> Suljetut
                         </label>
@@ -292,6 +293,7 @@
                                     <th>Aihe</th>
                                     <th>Lähettäjä</th>
                                     <th>Asiakas</th>
+                                    <th>Tagit</th>
                                     <th>Viestejä</th>
                                     <th>Päivitetty</th>
                                 </tr>
@@ -383,6 +385,14 @@
                                     <option value="muu">Muu</option>
                                 </select>
                             </div>
+                            <div class="form-group">
+                                <label>Aseta tagit (pilkulla eroteltuna)</label>
+                                <input type="text" id="rule-form-tags" placeholder="esim. notification, automaatti">
+                            </div>
+                            <div class="form-group">
+                                <label>Auto-close (päivää)</label>
+                                <input type="number" id="rule-form-autoclose" min="0" max="365" placeholder="esim. 7" style="max-width:120px;">
+                            </div>
                         </div>
                         <div style="display:flex;gap:0.5rem;margin-top:1rem;">
                             <button class="btn-primary" id="btn-save-rule">Tallenna</button>