feat: add multi-tab terminal with SSH support, config editing, and dashboard redesign

- Terminal: multi-tab sessions, SSH connections, shell detection (zsh/bash/fish/wsl/powershell)
- Config: inline profile & provider editing, system update management
- Dashboard: grid layout with inline tools/notifications/workflows sections
- Add lucide-react icons, i18n keys (FR/EN), and new CSS components

💾 Generated with Crush

Assisted-by: GLM-5-Turbo via Crush <crush@charm.land>

internal/api/handlers.go

@@ -325,3 +325,142 @@ Be concise, actionable, and structured. When proposing a plan, use clear numbere
 	}
 	writeJSON(w, map[string]string{"content": result})
 }
+
+func (s *Server) handleSaveProfile(w http.ResponseWriter, r *http.Request) {
+	if r.Method != "PUT" {
+		writeError(w, "PUT only", http.StatusMethodNotAllowed)
+		return
+	}
+	if s.config == nil {
+		writeError(w, "no config", http.StatusNotFound)
+		return
+	}
+	var body struct {
+		Name     string `json:"name"`
+		Pseudo   string `json:"pseudo"`
+		Email    string `json:"email"`
+		Editor   string `json:"editor"`
+		Shell    string `json:"shell"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
+		writeError(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+	if body.Name != "" {
+		s.config.Profile.Name = body.Name
+	}
+	if body.Pseudo != "" {
+		s.config.Profile.Pseudo = body.Pseudo
+	}
+	if body.Email != "" {
+		s.config.Profile.Email = body.Email
+	}
+	if body.Editor != "" {
+		s.config.Profile.Preferences.Editor = body.Editor
+	}
+	if body.Shell != "" {
+		s.config.Profile.Preferences.Shell = body.Shell
+	}
+	if err := config.Save(s.config); err != nil {
+		writeError(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	writeJSON(w, map[string]string{"status": "ok"})
+}
+
+func (s *Server) handleSaveProvider(w http.ResponseWriter, r *http.Request) {
+	if r.Method != "PUT" {
+		writeError(w, "PUT only", http.StatusMethodNotAllowed)
+		return
+	}
+	if s.config == nil {
+		writeError(w, "no config", http.StatusNotFound)
+		return
+	}
+	var body struct {
+		Name    string `json:"name"`
+		APIKey  string `json:"api_key"`
+		Model   string `json:"model"`
+		BaseURL string `json:"base_url"`
+		Active  *bool  `json:"active"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
+		writeError(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+	if body.Name == "" {
+		writeError(w, "name required", http.StatusBadRequest)
+		return
+	}
+	found := false
+	for i := range s.config.AI.Providers {
+		if s.config.AI.Providers[i].Name == body.Name {
+			if body.APIKey != "" {
+				s.config.AI.Providers[i].APIKey = body.APIKey
+			}
+			if body.Model != "" {
+				s.config.AI.Providers[i].Model = body.Model
+			}
+			if body.BaseURL != "" {
+				s.config.AI.Providers[i].BaseURL = body.BaseURL
+			}
+			if body.Active != nil {
+				if *body.Active {
+					for j := range s.config.AI.Providers {
+						s.config.AI.Providers[j].Active = false
+					}
+				}
+				s.config.AI.Providers[i].Active = *body.Active
+			}
+			found = true
+			break
+		}
+	}
+	if !found {
+		writeError(w, "provider not found", http.StatusNotFound)
+		return
+	}
+	if err := config.Save(s.config); err != nil {
+		writeError(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	writeJSON(w, map[string]string{"status": "ok"})
+}
+
+func (s *Server) handleRunUpdate(w http.ResponseWriter, r *http.Request) {
+	if r.Method != "POST" {
+		writeError(w, "POST only", http.StatusMethodNotAllowed)
+		return
+	}
+	var body struct {
+		Tool string `json:"tool"`
+	}
+	json.NewDecoder(r.Body).Decode(&body)
+
+	result := scanner.ScanSystem()
+	statuses := updater.CheckUpdates(result)
+
+	if body.Tool != "" {
+		for _, u := range statuses {
+			if u.Tool == body.Tool && u.NeedsUpdate {
+				updater.RunAutoUpdate([]updater.UpdateStatus{u})
+			}
+		}
+		writeJSON(w, map[string]string{"status": "ok", "tool": body.Tool})
+		return
+	}
+
+	needsUpdate := make([]updater.UpdateStatus, 0)
+	for _, u := range statuses {
+		if u.NeedsUpdate {
+			needsUpdate = append(needsUpdate, u)
+		}
+	}
+	if len(needsUpdate) > 0 {
+		updater.RunAutoUpdate(needsUpdate)
+	}
+	writeJSON(w, map[string]interface{}{
+		"status":  "ok",
+		"updated": len(needsUpdate),
+	})
+}