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/server.go

@@ -39,7 +39,12 @@ func (s *Server) routes() {
 	s.mux.HandleFunc("/api/preferences", s.handleUpdatePreferences)
 	s.mux.HandleFunc("/api/terminal", s.handleTerminal)
 	s.mux.HandleFunc("/api/ws/terminal", s.handleTerminalWS)
+	s.mux.HandleFunc("/api/terminal/sessions", s.handleTerminalSessions)
+	s.mux.HandleFunc("/api/terminal/sessions/", s.handleTerminalSessionsDelete)
 	s.mux.HandleFunc("/api/mcp/configure", s.handleMCPConfigure)
+	s.mux.HandleFunc("/api/config/profile", s.handleSaveProfile)
+	s.mux.HandleFunc("/api/config/provider", s.handleSaveProvider)
+	s.mux.HandleFunc("/api/update/run", s.handleRunUpdate)
 }
 
 func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {