refactor(new_editor): tighten app dependency boundaries

new_editor/app/State/EditorSession.h

@@ -0,0 +1,73 @@
+#pragma once
+
+#include <cstdint>
+#include <filesystem>
+#include <string>
+#include <string_view>
+#include <vector>
+
+namespace XCEngine::UI::Editor {
+
+class UIEditorWorkspaceController;
+
+} // namespace XCEngine::UI::Editor
+
+namespace XCEngine::UI::Editor::App {
+
+enum class EditorRuntimeMode : std::uint8_t {
+    Edit = 0,
+    Play,
+    Paused
+};
+
+enum class EditorActionRoute : std::uint8_t {
+    None = 0,
+    Hierarchy,
+    Project,
+    Inspector,
+    Console,
+    Scene,
+    Game
+};
+
+enum class EditorSelectionKind : std::uint8_t {
+    None = 0,
+    HierarchyNode,
+    ProjectItem
+};
+
+struct EditorSelectionState {
+    EditorSelectionKind kind = EditorSelectionKind::None;
+    std::string itemId = {};
+    std::string displayName = {};
+    std::filesystem::path absolutePath = {};
+    bool directory = false;
+    std::uint64_t stamp = 0u;
+};
+
+struct EditorConsoleEntry {
+    std::string channel = {};
+    std::string message = {};
+};
+
+struct EditorSession {
+    std::filesystem::path repoRoot = {};
+    std::filesystem::path projectRoot = {};
+    std::string activePanelId = {};
+    EditorRuntimeMode runtimeMode = EditorRuntimeMode::Edit;
+    EditorActionRoute activeRoute = EditorActionRoute::None;
+    EditorSelectionState selection = {};
+    std::vector<EditorConsoleEntry> consoleEntries = {};
+};
+
+std::string_view GetEditorRuntimeModeName(EditorRuntimeMode mode);
+std::string_view GetEditorActionRouteName(EditorActionRoute route);
+std::string_view GetEditorSelectionKindName(EditorSelectionKind kind);
+
+EditorActionRoute ResolveEditorActionRoute(std::string_view panelId);
+
+void SyncEditorSessionFromWorkspace(
+    EditorSession& session,
+    const UIEditorWorkspaceController& controller);
+
+} // namespace XCEngine::UI::Editor::App