Backend improvements: views, fields_get, session, RPC stubs

- Improved auto-generated list/form/search views with priority fields,
  two-column form layout, statusbar widget, notebook for O2M fields
- Enhanced fields_get with currency_field, compute, related metadata
- Fixed session handling: handleSessionInfo/handleSessionCheck use real
  session from cookie instead of hardcoded values
- Added read_progress_bar and activity_format RPC stubs
- Improved bootstrap translations with lang_parameters
- Added "contacts" to session modules list

Server starts successfully: 14 modules, 93 models, 378 XML templates,
503 JS modules transpiled — all from local frontend/ directory.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

pkg/server/server.go

@@ -612,6 +612,12 @@ func (s *Server) dispatchORM(env *orm.Environment, params CallKWParams) (interfa
 		}
 		return nameResult, nil
 
+	case "read_progress_bar":
+		return map[string]interface{}{}, nil
+
+	case "activity_format":
+		return []interface{}{}, nil
+
 	case "action_archive":
 		ids := parseIDs(params.Args)
 		if len(ids) > 0 {
@@ -754,13 +760,20 @@ func (s *Server) handleAuthenticate(w http.ResponseWriter, r *http.Request) {
 }
 
 func (s *Server) handleSessionInfo(w http.ResponseWriter, r *http.Request) {
-	s.writeJSONRPC(w, nil, map[string]interface{}{
-		"uid":                  1,
-		"is_admin":             true,
-		"server_version":       "19.0-go",
-		"server_version_info":  []interface{}{19, 0, 0, "final", 0, "g"},
-		"db":                   s.config.DBName,
-	}, nil)
+	// Try context first, then fall back to cookie lookup
+	sess := GetSession(r)
+	if sess == nil {
+		if cookie, err := r.Cookie("session_id"); err == nil && cookie.Value != "" {
+			sess = s.sessions.Get(cookie.Value)
+		}
+	}
+	if sess == nil {
+		s.writeJSONRPC(w, nil, nil, &RPCError{
+			Code: 100, Message: "Session expired",
+		})
+		return
+	}
+	s.writeJSONRPC(w, nil, s.buildSessionInfo(sess), nil)
 }
 
 func (s *Server) handleDBList(w http.ResponseWriter, r *http.Request) {