feat(studio): improve context compression UI and provider display

- Add visual indicator when messages are collapsed (folder icon)
- Add animation to token bar during compression (pulse effect)
- Token bar becomes more compact after compression with "· compressé" label
- Button "voir plus" to expand collapsed messages
- Add 24px spacing at end of feed to avoid last message clipping
- Simplify provider display: show name only, badge "active" instead of key status
- Dashboard: show provider name only without model suffix
- Studio /model: show just provider name, not model
- Z.AI (GLM): mark as crush-only, no external quota check
- Claude: check /usr/bin/claude installation instead of API

💘 Generated with Crush

internal/api/handlers_info.go

@@ -477,25 +477,16 @@ func (s *Server) handleProvidersQuota(w http.ResponseWriter, r *http.Request) {
 				}
 			}
 		case "zai":
-			if p.APIKey == "" {
-				q.Error = "no API key"
-				results = append(results, q)
-				continue
-			}
-			req, _ := http.NewRequest("GET", "https://api.z.ai/api/monitor/usage/quota/limit", nil)
-			req.Header.Set("Authorization", "Bearer "+p.APIKey)
-			req.Header.Set("Accept", "application/json")
-			resp, err := client.Do(req)
-			if err != nil {
-				q.Error = err.Error()
+			// Z.AI (GLM) est utilisé uniquement via Crush, pas de quota check externe
+			q.Healthy = true
+			q.Data = map[string]interface{}{"note": "crush-only"}
+		case "claude", "anthropic":
+			// Claude Code n'a pas d'API externe, vérifier l'installation
+			claudePath := "/usr/bin/claude"
+			if _, err := os.Stat(claudePath); err == nil {
+				q.Healthy = true
 			} else {
-				body, _ := io.ReadAll(resp.Body)
-				resp.Body.Close()
-				var data map[string]interface{}
-				if json.Unmarshal(body, &data) == nil {
-					q.Data = data
-					q.Healthy = true
-				}
+				q.Error = "claude code not installed"
 			}
 		default:
 			q.Error = "quota not supported"