Make all user menu items functional

- res.users.action_get() RPC: returns preferences action (form dialog)
- /web/session/account endpoint: returns Odoo.com account URL
- /web/session/logout: clears session, redirects to login (was already done)
- support_url set to odoo.com/help (enables Help menu item)
- notification_type + display_switch_company_menu in session_info
- Image handler: path-style URL parsing for avatars

All user dropdown items now work:
  Help → opens odoo.com/help
  Shortcuts → opens command palette (client-side)
  My Preferences → opens user form dialog
  My Odoo.com Account → opens accounts.odoo.com
  Log out → clears session, redirects to login

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

pkg/server/server.go

@@ -119,8 +119,9 @@ func (s *Server) registerRoutes() {
 	// File upload
 	s.mux.HandleFunc("/web/binary/upload_attachment", s.handleUpload)
 
-	// Logout
+	// Logout & Account
 	s.mux.HandleFunc("/web/session/logout", s.handleLogout)
+	s.mux.HandleFunc("/web/session/account", s.handleSessionAccount)
 
 	// Health check
 	s.mux.HandleFunc("/health", s.handleHealth)
@@ -628,6 +629,20 @@ func (s *Server) dispatchORM(env *orm.Environment, params CallKWParams) (interfa
 	case "activity_format":
 		return []interface{}{}, nil
 
+	case "action_get":
+		// res.users.action_get() — returns the preference action
+		// Mirrors: odoo/addons/base/models/res_users.py action_get()
+		return map[string]interface{}{
+			"type":      "ir.actions.act_window",
+			"name":      "Change My Preferences",
+			"res_model": "res.users",
+			"view_mode": "form",
+			"views":     [][]interface{}{{false, "form"}},
+			"target":    "new",
+			"res_id":    env.UID(),
+			"context":   map[string]interface{}{},
+		}, nil
+
 	case "action_archive":
 		ids := parseIDs(params.Args)
 		if len(ids) > 0 {
@@ -799,6 +814,12 @@ func (s *Server) handleVersionInfo(w http.ResponseWriter, r *http.Request) {
 	}, nil)
 }
 
+// handleSessionAccount returns the Odoo.com account URL.
+// Mirrors: odoo/addons/web/controllers/home.py session_account()
+func (s *Server) handleSessionAccount(w http.ResponseWriter, r *http.Request) {
+	s.writeJSONRPC(w, nil, "https://accounts.odoo.com/account", nil)
+}
+
 // handleLogout destroys the session and redirects to login.
 // Mirrors: odoo/addons/web/controllers/home.py Home.web_logout()
 func (s *Server) handleLogout(w http.ResponseWriter, r *http.Request) {