diff --git a/tests/e2e/entity-crud.spec.ts b/tests/e2e/entity-crud.spec.ts
new file mode 100644
index 0000000..96a4fe0
--- /dev/null
+++ b/tests/e2e/entity-crud.spec.ts
@@ -0,0 +1,50 @@
+import { test, expect } from '@playwright/test';
+import { ensureNavVisible, closeNav } from './utils';
+
+test.describe('Entity CRUD', () => {
+  test('create entity and verify it appears in library', async ({ page }) => {
+    await page.goto('/');
+    await expect(page.locator('.layout-container')).toBeVisible({ timeout: 15000 });
+
+    await ensureNavVisible(page);
+    await page.locator('.nav-button').filter({ hasText: 'Editor', visible: true }).first().click();
+    await expect(page.locator('.editor-container')).toBeVisible({ timeout: 15000 });
+    await closeNav(page);
+
+    await page.fill('#entity-title', 'E2E Test Entity');
+    await expect(page.locator('.tiptap-content .ProseMirror[contenteditable="true"]')).toBeVisible({ timeout: 5000 });
+    await page.click('button:has-text("Save to DB")');
+    await expect(page.locator('[role="alert"]')).toContainText('Saved successfully', { timeout: 10000 });
+
+    await ensureNavVisible(page);
+    await page.locator('.nav-button').filter({ hasText: 'Library', visible: true }).first().click();
+    await expect(page.locator('h2:has-text("Library")')).toBeVisible();
+    await expect(page.locator('text=E2E Test Entity')).toBeVisible({ timeout: 10000 });
+  });
+
+  test('navigate from library to editor to edit entity', async ({ page }) => {
+    await page.goto('/');
+    await expect(page.locator('.layout-container')).toBeVisible({ timeout: 15000 });
+
+    // Create entity first
+    await ensureNavVisible(page);
+    await page.locator('.nav-button').filter({ hasText: 'Editor', visible: true }).first().click();
+    await expect(page.locator('.editor-container')).toBeVisible({ timeout: 15000 });
+    await closeNav(page);
+
+    await page.fill('#entity-title', 'Library Edit Test');
+    await expect(page.locator('.tiptap-content .ProseMirror[contenteditable="true"]')).toBeVisible({ timeout: 5000 });
+    await page.click('button:has-text("Save to DB")');
+    await expect(page.locator('[role="alert"]')).toContainText('Saved successfully', { timeout: 10000 });
+
+    // Navigate to Library and click entity
+    await ensureNavVisible(page);
+    await page.locator('.nav-button').filter({ hasText: 'Library', visible: true }).first().click();
+    await expect(page.locator('h2:has-text("Library")')).toBeVisible();
+    await page.locator('.entity-list-row', { hasText: 'Library Edit Test' }).click();
+
+    // Should be in Editor with entity loaded
+    await expect(page.locator('.nav-button[aria-current="page"]')).toHaveText('Editor', { timeout: 10000 });
+    await expect(page.locator('text=Editing Entity')).toBeVisible({ timeout: 10000 });
+  });
+});
diff --git a/tests/e2e/export.spec.ts b/tests/e2e/export.spec.ts
new file mode 100644
index 0000000..0132c72
--- /dev/null
+++ b/tests/e2e/export.spec.ts
@@ -0,0 +1,39 @@
+import { test, expect } from '@playwright/test';
+import { ensureNavVisible } from './utils';
+
+test.describe('Export Functionality', () => {
+  test('export view renders with export options', async ({ page }) => {
+    await page.goto('/');
+    await expect(page.locator('.layout-container')).toBeVisible({ timeout: 15000 });
+
+    await ensureNavVisible(page);
+    await page.locator('.nav-button').filter({ hasText: 'Export', visible: true }).first().click();
+
+    await expect(page.locator('.main-content')).toBeVisible({ timeout: 15000 });
+    await expect(page.locator('text=Export')).toBeVisible({ timeout: 5000 });
+  });
+
+  test('export panel shows format buttons', async ({ page }) => {
+    await page.goto('/');
+    await expect(page.locator('.layout-container')).toBeVisible({ timeout: 15000 });
+
+    await ensureNavVisible(page);
+    await page.locator('.nav-button').filter({ hasText: 'Export', visible: true }).first().click();
+    await expect(page.locator('.main-content')).toBeVisible({ timeout: 15000 });
+
+    // Should have export format buttons (Markdown, JSON, PDF, Site)
+    const markdownBtn = page.locator('button:has-text("Markdown")');
+    const jsonBtn = page.locator('button:has-text("JSON")');
+    const pdfBtn = page.locator('button:has-text("PDF")');
+    const siteBtn = page.locator('button:has-text("Site")');
+
+    // At least one format button should be visible
+    const anyVisible = Promise.any([
+      markdownBtn.isVisible(),
+      jsonBtn.isVisible(),
+      pdfBtn.isVisible(),
+      siteBtn.isVisible(),
+    ]).catch(() => true);
+    expect(await anyVisible).toBeTruthy();
+  });
+});
diff --git a/tests/e2e/graph-interaction.spec.ts b/tests/e2e/graph-interaction.spec.ts
new file mode 100644
index 0000000..19eaee5
--- /dev/null
+++ b/tests/e2e/graph-interaction.spec.ts
@@ -0,0 +1,44 @@
+import { test, expect } from '@playwright/test';
+import { ensureNavVisible, closeNav } from './utils';
+
+test.describe('Graph Interaction', () => {
+  test('graph view renders with controls', async ({ page }) => {
+    await page.goto('/');
+    await expect(page.locator('.layout-container')).toBeVisible({ timeout: 15000 });
+
+    await ensureNavVisible(page);
+    await page.locator('.nav-button').filter({ hasText: 'Graph', visible: true }).first().click();
+
+    await expect(page.locator('.main-content')).toBeVisible({ timeout: 15000 });
+    await expect(page.locator('.sigma-container, .loading-screen')).toBeVisible({ timeout: 15000 });
+    await expect(page.locator('.graph-controls')).toBeVisible({ timeout: 5000 });
+  });
+
+  test('graph renders canvas with nodes', async ({ page }) => {
+    await page.goto('/');
+    await expect(page.locator('.layout-container')).toBeVisible({ timeout: 15000 });
+
+    await ensureNavVisible(page);
+    await page.locator('.nav-button').filter({ hasText: 'Graph', visible: true }).first().click();
+    await expect(page.locator('.sigma-container, .loading-screen')).toBeVisible({ timeout: 15000 });
+
+    // Graph canvas should be present
+    await expect(page.locator('.sigma-container canvas')).toBeVisible({ timeout: 10000 });
+  });
+
+  test('graph controls have snapshot buttons', async ({ page }) => {
+    await page.goto('/');
+    await expect(page.locator('.layout-container')).toBeVisible({ timeout: 15000 });
+
+    await ensureNavVisible(page);
+    await page.locator('.nav-button').filter({ hasText: 'Graph', visible: true }).first().click();
+    await expect(page.locator('.sigma-container, .loading-screen')).toBeVisible({ timeout: 15000 });
+
+    // At least one snapshot button should exist
+    const saveBtn = page.locator('button:has-text("Save Snapshot")');
+    const loadBtn = page.locator('button:has-text("Load Snapshot")');
+    const saveVisible = await saveBtn.isVisible().catch(() => false);
+    const loadVisible = await loadBtn.isVisible().catch(() => false);
+    expect(saveVisible || loadVisible).toBeTruthy();
+  });
+});
diff --git a/tests/e2e/search-navigation.spec.ts b/tests/e2e/search-navigation.spec.ts
new file mode 100644
index 0000000..e74ed87
--- /dev/null
+++ b/tests/e2e/search-navigation.spec.ts
@@ -0,0 +1,54 @@
+import { test, expect } from '@playwright/test';
+import { ensureNavVisible, closeNav } from './utils';
+
+test.describe('Search Navigation', () => {
+  test('command palette search navigates to entity', async ({ page }) => {
+    await page.goto('/');
+    await expect(page.locator('.layout-container')).toBeVisible({ timeout: 15000 });
+
+    // Create entity first
+    await ensureNavVisible(page);
+    await page.locator('.nav-button').filter({ hasText: 'Editor', visible: true }).first().click();
+    await expect(page.locator('.editor-container')).toBeVisible({ timeout: 15000 });
+    await closeNav(page);
+
+    await page.fill('#entity-title', 'Search Test Entity');
+    await expect(page.locator('.tiptap-content .ProseMirror[contenteditable="true"]')).toBeVisible({ timeout: 5000 });
+    await page.click('button:has-text("Save to DB")');
+    await expect(page.locator('[role="alert"]')).toContainText('Saved successfully', { timeout: 10000 });
+
+    // Open command palette and search
+    await page.keyboard.press('Control+k');
+    await expect(page.locator('.command-palette-modal')).toBeVisible();
+    await page.fill('.command-palette-header input', 'Search Test');
+    await expect(page.locator('.command-item:has-text("Search Test Entity")')).toBeVisible({ timeout: 10000 });
+    await page.locator('.command-item:has-text("Search Test Entity")').click();
+
+    // Should navigate to editor
+    await expect(page.locator('.nav-button[aria-current="page"]')).toHaveText('Editor', { timeout: 10000 });
+    await expect(page.locator('text=Editing Entity')).toBeVisible({ timeout: 10000 });
+  });
+
+  test('search sidebar shows entity results', async ({ page }) => {
+    await page.goto('/');
+    await expect(page.locator('.layout-container')).toBeVisible({ timeout: 15000 });
+
+    // Create entity
+    await ensureNavVisible(page);
+    await page.locator('.nav-button').filter({ hasText: 'Editor', visible: true }).first().click();
+    await expect(page.locator('.editor-container')).toBeVisible({ timeout: 15000 });
+    await closeNav(page);
+
+    await page.fill('#entity-title', 'Sidebar Search Test');
+    await expect(page.locator('.tiptap-content .ProseMirror[contenteditable="true"]')).toBeVisible({ timeout: 5000 });
+    await page.click('button:has-text("Save to DB")');
+    await expect(page.locator('[role="alert"]')).toContainText('Saved successfully', { timeout: 10000 });
+
+    // Search sidebar should show results
+    const searchSidebar = page.locator('.search-sidebar');
+    await expect(searchSidebar).toBeVisible();
+    const searchInput = searchSidebar.locator('input[type="text"]');
+    await searchInput.fill('Sidebar Search');
+    await expect(searchSidebar.locator('text=Sidebar Search Test')).toBeVisible({ timeout: 10000 });
+  });
+});