fix: repaired rebuild from filesystem

tests/engine/MetaEngine.test.ts

@@ -731,19 +731,19 @@ describe('MetaEngine', () => {
       expect(metaDir).toContain('/custom/data/path');
     });
 
-    it('should sync dataPath from project.json to database if different', async () => {
+    it('should sync dataPath from database to project.json if different', async () => {
       const metaDir = metaEngine.getMetaDir();
       mockFiles.set(normalizePath(`${metaDir}/project.json`), JSON.stringify({
         name: 'Project',
-        dataPath: '/custom/path/from/file',
+        dataPath: '/old/path/from/file',
       }));
       
-      // Database has different or missing dataPath
+      // Database has the currently selected (authoritative) path
       mockProject = {
         id: 'test-project',
         name: 'Project',
         description: null,
-        dataPath: null,
+        dataPath: '/new/path/from/database',
         slug: 'project',
         createdAt: new Date(),
         updatedAt: new Date(),
@@ -752,8 +752,11 @@ describe('MetaEngine', () => {
       
       await metaEngine.syncOnStartup();
       
-      // Should have synced (database update called)
-      expect(mockLocalDb.select).toHaveBeenCalled();
+      const savedProjectJson = mockFiles.get(normalizePath(`${metaDir}/project.json`));
+      expect(savedProjectJson).toBeDefined();
+      const parsed = JSON.parse(savedProjectJson!);
+      expect(parsed.dataPath).toBe('/new/path/from/database');
+      expect(mockLocalDb.update).not.toHaveBeenCalled();
     });
   });
 });

tests/ipc/handlers.test.ts

@@ -48,6 +48,7 @@ const mockPostEngine = {
   isSlugAvailable: vi.fn(),
   generateUniqueSlug: vi.fn(),
   rebuildDatabaseFromFiles: vi.fn(),
+  reindexText: vi.fn(),
   searchPosts: vi.fn(),
   getPostsFiltered: vi.fn(),
   getAvailableTags: vi.fn(),
@@ -629,6 +630,28 @@ describe('IPC Handlers', () => {
         expect(result).toEqual(linkedPosts);
       });
     });
+
+    describe('posts:rebuildFromFiles', () => {
+      it('should propagate rebuild errors to the caller', async () => {
+        const rebuildError = new Error('rebuild failed');
+        mockPostEngine.rebuildDatabaseFromFiles.mockRejectedValue(rebuildError);
+        mockProjectEngine.getActiveProject.mockResolvedValue(null);
+
+        await expect(invokeHandler('posts:rebuildFromFiles')).rejects.toThrow('rebuild failed');
+        expect(mockPostEngine.rebuildDatabaseFromFiles).toHaveBeenCalled();
+      });
+    });
+
+    describe('posts:reindexText', () => {
+      it('should propagate reindex errors to the caller', async () => {
+        const reindexError = new Error('post reindex failed');
+        mockPostEngine.reindexText.mockRejectedValue(reindexError);
+        mockProjectEngine.getActiveProject.mockResolvedValue(null);
+
+        await expect(invokeHandler('posts:reindexText')).rejects.toThrow('post reindex failed');
+        expect(mockPostEngine.reindexText).toHaveBeenCalled();
+      });
+    });
   });
 
   // ============ Media Handlers ============
@@ -790,6 +813,27 @@ describe('IPC Handlers', () => {
         expect(result).toEqual(thumbnailDataUrl);
       });
     });
+
+    describe('media:rebuildFromFiles', () => {
+      it('should propagate rebuild errors to the caller', async () => {
+        const rebuildError = new Error('media rebuild failed');
+        mockMediaEngine.rebuildDatabaseFromFiles.mockRejectedValue(rebuildError);
+        mockProjectEngine.getActiveProject.mockResolvedValue(null);
+
+        await expect(invokeHandler('media:rebuildFromFiles')).rejects.toThrow('media rebuild failed');
+        expect(mockMediaEngine.rebuildDatabaseFromFiles).toHaveBeenCalled();
+      });
+    });
+
+    describe('media:reindexText', () => {
+      it('should propagate reindex errors to the caller', async () => {
+        const reindexError = new Error('media reindex failed');
+        mockMediaEngine.reindexText.mockRejectedValue(reindexError);
+
+        await expect(invokeHandler('media:reindexText')).rejects.toThrow('media reindex failed');
+        expect(mockMediaEngine.reindexText).toHaveBeenCalled();
+      });
+    });
   });
 
   // ============ Meta Handlers ============