Keeping last project open

src/App.svelte

@@ -21,6 +21,7 @@
     templateRegistry,
     type CsoundTemplate,
   } from "./lib/templates/template-registry";
+  import { loadLastProjectId } from "./lib/project-system/persistence";
   import { createAppContext, setAppContext } from "./lib/contexts/app-context";
   import type { ProjectMode } from "./lib/project-system/types";
   import {
@@ -53,20 +54,43 @@
   onMount(async () => {
     await projectManager.init();
 
-    const result = await projectManager.getAllProjects();
-    if (result.success && result.data.length === 0) {
-      const classicTemplate = templateRegistry.getById("classic");
-      if (classicTemplate) {
-        await projectManager.createProject({
-          title: "Welcome",
-          author: "System",
-          content: classicTemplate.content,
-          tags: [],
-          mode: classicTemplate.mode,
-        });
+    const lastProjectId = loadLastProjectId();
+    let projectToLoad: CsoundProject | null = null;
+
+    if (lastProjectId) {
+      const result = await projectManager.getProject(lastProjectId);
+      if (result.success) {
+        projectToLoad = result.data;
       }
     }
 
+    if (!projectToLoad) {
+      const allProjectsResult = await projectManager.getAllProjects();
+      if (allProjectsResult.success) {
+        if (allProjectsResult.data.length > 0) {
+          projectToLoad = allProjectsResult.data[0];
+        } else {
+          const classicTemplate = templateRegistry.getById("classic");
+          if (classicTemplate) {
+            const createResult = await projectManager.createProject({
+              title: "Welcome",
+              author: "System",
+              content: classicTemplate.content,
+              tags: [],
+              mode: classicTemplate.mode,
+            });
+            if (createResult.success) {
+              projectToLoad = createResult.data;
+            }
+          }
+        }
+      }
+    }
+
+    if (projectToLoad) {
+      projectEditor.loadProject(projectToLoad);
+    }
+
     logsUnsubscribe = csoundDerived.logs.subscribe((logs) => {
       interpreterLogs = logs;
     });
@@ -344,6 +368,7 @@
         onExecute={handleExecute}
         logs={interpreterLogs}
         {editorSettings}
+        mode={projectEditor.currentProject?.mode || 'composition'}
       />
     </div>