feat: terminal sudo blocking, token tracking, mermaid & consumption UI

- Block sudo/doas commands when not running as root
- Add real token counting from API responses
- Track and display consumption by provider/day
- Add Mermaid diagram rendering in Shell and Studio
- Add copy-to-clipboard buttons for code blocks
- Support tables in AI message rendering
- Update system prompt with context (date, time, root status)

💘 Generated with Crush

Assisted-by: MiniMax-M2.7 via Crush <crush@charm.land>

internal/api/handlers_info.go

@@ -534,6 +534,39 @@ func (s *Server) handleProvidersQuota(w http.ResponseWriter, r *http.Request) {
 			q.Healthy = p.APIKey != ""
 			if p.APIKey == "" {
 				q.Error = "no API key"
+				results = append(results, q)
+				continue
+			}
+			mimoBase := p.BaseURL
+			if mimoBase == "" {
+				mimoBase = "https://token-plan-ams.xiaomimimo.com/v1"
+			}
+			req, _ := http.NewRequest("GET", strings.TrimRight(mimoBase, "/")+"/models", nil)
+			req.Header.Set("Authorization", "Bearer "+p.APIKey)
+			resp, err := client.Do(req)
+			if err != nil {
+				q.Error = err.Error()
+			} else {
+				body, _ := io.ReadAll(resp.Body)
+				resp.Body.Close()
+				var data map[string]interface{}
+				if json.Unmarshal(body, &data) == nil {
+					if modelList, ok := data["data"].([]interface{}); ok {
+						models := make([]map[string]interface{}, 0)
+						for _, m := range modelList {
+							if mm, ok := m.(map[string]interface{}); ok {
+								id, _ := mm["id"].(string)
+								if id != "" {
+									models = append(models, map[string]interface{}{
+										"model": id,
+									})
+								}
+							}
+						}
+						q.Data = map[string]interface{}{"models": models, "available": len(models)}
+						q.Healthy = true
+					}
+				}
 			}
 		case "claude", "anthropic":
 			// Claude Code n'a pas d'API externe, vérifier l'installation
@@ -551,6 +584,15 @@ func (s *Server) handleProvidersQuota(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, map[string]interface{}{"providers": results})
 }
 
+func (s *Server) handleProvidersConsumption(w http.ResponseWriter, r *http.Request) {
+	if r.Method != "GET" {
+		writeError(w, "GET only", http.StatusMethodNotAllowed)
+		return
+	}
+	data := s.consumption.GetAll()
+	writeJSON(w, map[string]interface{}{"providers": data})
+}
+
 func (s *Server) handleRecentCommands(w http.ResponseWriter, r *http.Request) {
 	home, _ := os.UserHomeDir()
 	type cmdEntry struct {