Merge pull request 'fix DOWN enum: Kuma heartbeat 0=down (was 2)' (#5) from ic-builder/status-enum into main

Live-path debug found the bridge silently ignored real Kuma down-events:
Kuma heartbeat.status is 0=down/1=up/2=pending, not the webhook-doc
guess used earlier. DOWN now keyed on 0.
Ticket: https://projects.knownelement.com/issues/824

cmd/bridge/main.go

@@ -199,7 +199,7 @@ func (b *bridge) handle(w http.ResponseWriter, r *http.Request) {
 	b.mu.Lock()
 	defer b.mu.Unlock()
 	switch status {
-	case 2: // DOWN (0=unknown,1=up,2=down per Kuma webhook)
+	case 0: // Kuma heartbeat status: 0=down, 1=up, 2=pending, 3=maintenance
 		if _, exists := b.open[k.Monitor.Name]; !exists {
 			tid, err := b.glpi.openTicketFor(k.Monitor.Name)
 			if err == nil && tid == 0 {
@@ -216,7 +216,11 @@ func (b *bridge) handle(w http.ResponseWriter, r *http.Request) {
 	case 1: // UP
 		tid, exists := b.open[k.Monitor.Name]
 		if !exists {
-			return
+			// restarts wipe the in-memory map; search GLPI for an open ticket
+			tid, _ = b.glpi.openTicketFor(k.Monitor.Name)
+			if tid == 0 {
+				return
+			}
 		}
 		delete(b.open, k.Monitor.Name)
 		go func() {
@@ -224,7 +228,7 @@ func (b *bridge) handle(w http.ResponseWriter, r *http.Request) {
 			if err := b.glpi.followup(tid, fu); err != nil {
 				log.Printf("followup failed (continuing to solve): %v", err)
 			}
-			if err := b.glpi.do("POST", fmt.Sprintf("/Ticket/%d", tid), map[string]any{"input": map[string]any{"status": 11}}, nil); err != nil { // 11 = solved
+			if err := b.glpi.do("PUT", fmt.Sprintf("/Ticket/%d", tid), map[string]any{"input": map[string]any{"status": 5}}, nil); err != nil { // ticket status 5 = solved
 				log.Printf("solve failed: %v", err)
 			}
 		}()