Show environment selector when loading project request into empty tab

src/request_tab_widget.py

@@ -41,6 +41,7 @@ class RequestTabWidget(Gtk.Box):
         self.selected_environment_id = selected_environment_id
         self.project_manager = None  # Will be injected from window
         self.environment_dropdown = None  # Will be created if project_id is set
+        self.environment_selector_box = None  # Will store the environment selector UI box
         self.undefined_variables = set()  # Track undefined variables for visual feedback
         self._update_indicators_timeout_id = None  # Debounce timer for indicator updates
 
@@ -90,9 +91,9 @@ class RequestTabWidget(Gtk.Box):
         self.append(url_clamp)
 
         # Environment Selector (only if project_id is set)
-        env_selector = self._build_environment_selector()
-        if env_selector:
-            self.append(env_selector)
+        # Store reference for potential later insertion
+        if self.project_id:
+            self._show_environment_selector()
 
         # Vertical Paned: Main Content | History Panel
         vpane = Gtk.Paned(orientation=Gtk.Orientation.VERTICAL)
@@ -666,6 +667,26 @@ class RequestTabWidget(Gtk.Box):
         # Update indicators after environment is set
         self._update_variable_indicators()
 
+    def _show_environment_selector(self):
+        """Show environment selector (create if it doesn't exist)."""
+        # If selector already exists, nothing to do
+        if self.environment_selector_box:
+            return
+
+        # Create the selector
+        self.environment_selector_box = self._build_environment_selector()
+
+        # Insert it after the URL box (which is the first child)
+        # Get the first child (url_clamp) to insert after it
+        first_child = self.get_first_child()
+        if first_child:
+            # Insert after the first child
+            self.insert_child_after(self.environment_selector_box, first_child)
+
+        # Populate if project_manager is available
+        if self.project_manager:
+            self._populate_environment_dropdown()
+
     def _on_environment_changed(self, dropdown, _param):
         """Handle environment selection change."""
         if not hasattr(self, 'environment_ids'):

src/window.py

@@ -925,8 +925,8 @@ class RosterWindow(Adw.ApplicationWindow):
                     # Update widget with project context
                     widget.project_id = project_id
                     widget.selected_environment_id = default_env_id
-                    if project_id and hasattr(widget, '_populate_environment_dropdown'):
-                        widget._populate_environment_dropdown()
+                    if project_id and hasattr(widget, '_show_environment_selector'):
+                        widget._show_environment_selector()
 
                     # Update the tab page title
                     page.set_title(tab_name)