diff --git a/dashboard/tests/e2e/apps/apps.spec.ts b/dashboard/tests/e2e/apps/apps.spec.ts
index d58554a..5bd7df7 100644
--- a/dashboard/tests/e2e/apps/apps.spec.ts
+++ b/dashboard/tests/e2e/apps/apps.spec.ts
@@ -2,6 +2,36 @@ import { expect, type Page } from '@playwright/test';
 import { test } from '../fixtures/ids';
 import { CleanupRegistry } from '../fixtures/cleanup';
 import { adminApi } from '../fixtures/api';
+import { loginAsUserToken, pageWithUserToken } from '../fixtures/role-page';
+
+const MEMBER_PW = 'e2e-member-pw';
+
+async function seedAppAndMember(opts: {
+	slug: string;
+	username: string;
+	role: 'viewer' | 'editor' | 'app_admin';
+}): Promise<{ appId: string; userId: string }> {
+	const api = await adminApi();
+	try {
+		const appRes = await api.post('/api/v1/admin/apps', {
+			data: { slug: opts.slug, name: opts.slug }
+		});
+		expect(appRes.ok()).toBe(true);
+		const appId = ((await appRes.json()) as { id: string }).id;
+		const userRes = await api.post('/api/v1/admin/admins', {
+			data: { username: opts.username, password: MEMBER_PW, instance_role: 'member' }
+		});
+		expect(userRes.ok()).toBe(true);
+		const userId = ((await userRes.json()) as { id: string }).id;
+		const memberRes = await api.post(`/api/v1/admin/apps/${opts.slug}/members`, {
+			data: { user_id: userId, role: opts.role }
+		});
+		expect(memberRes.ok()).toBe(true);
+		return { appId, userId };
+	} finally {
+		await api.dispose();
+	}
+}
 
 // Phase B2 — Apps Lifecycle. Create, view, edit, delete, plus the
 // historical-slug takeover flow and adversarial inputs.
@@ -224,3 +254,82 @@ test.describe('B2 apps adversarial', () => {
 		await expect(page.getByRole('button', { name: 'Settings' })).toBeVisible();
 	});
 });
+
+test.describe('B2 apps role shadowing', () => {
+	test('viewer member sees no "New app" on the apps list', async ({
+		browser,
+		uniqueSlug,
+		uniqueUsername
+	}) => {
+		const slug = uniqueSlug('vlist');
+		const username = uniqueUsername('viewer');
+		const { userId } = await seedAppAndMember({ slug, username, role: 'viewer' });
+		cleanup.app(slug);
+		cleanup.adminUser(userId);
+
+		const token = await loginAsUserToken(username, MEMBER_PW);
+		const page = await pageWithUserToken(browser, token);
+		try {
+			await page.goto('/admin/apps');
+			// Member can see the apps list (just the one they belong to)
+			// but the create-app affordance is hidden.
+			await expect(page.getByRole('link', { name: new RegExp(slug) })).toBeVisible();
+			await expect(page.getByRole('button', { name: /^New app$/ })).toHaveCount(0);
+		} finally {
+			await page.context().close();
+		}
+	});
+
+	test('viewer sees no Add domain form and no Settings tab on app detail', async ({
+		browser,
+		uniqueSlug,
+		uniqueUsername
+	}) => {
+		const slug = uniqueSlug('vdom');
+		const username = uniqueUsername('viewer');
+		const { userId } = await seedAppAndMember({ slug, username, role: 'viewer' });
+		cleanup.app(slug);
+		cleanup.adminUser(userId);
+
+		const token = await loginAsUserToken(username, MEMBER_PW);
+		const page = await pageWithUserToken(browser, token);
+		try {
+			await page.goto(`/admin/apps/${slug}`);
+			await expect(
+				page.getByRole('button', { name: /^Scripts \(\d+\)$/ })
+			).toBeVisible();
+			// Settings tab is absent.
+			await expect(page.getByRole('button', { name: /^Settings$/ })).toHaveCount(0);
+			// Domains tab still listable, but no Add-domain submit.
+			await page.getByRole('button', { name: /^Domains \(\d+\)$/ }).click();
+			await expect(page.getByRole('button', { name: /^Add domain$/ })).toHaveCount(0);
+		} finally {
+			await page.context().close();
+		}
+	});
+
+	test('editor sees New script but no Settings tab', async ({
+		browser,
+		uniqueSlug,
+		uniqueUsername
+	}) => {
+		const slug = uniqueSlug('edit');
+		const username = uniqueUsername('editor');
+		const { userId } = await seedAppAndMember({ slug, username, role: 'editor' });
+		cleanup.app(slug);
+		cleanup.adminUser(userId);
+
+		const token = await loginAsUserToken(username, MEMBER_PW);
+		const page = await pageWithUserToken(browser, token);
+		try {
+			await page.goto(`/admin/apps/${slug}`);
+			await expect(page.getByRole('button', { name: /^New script$/ })).toBeVisible();
+			await expect(page.getByRole('button', { name: /^Settings$/ })).toHaveCount(0);
+			await expect(
+				page.getByRole('button', { name: /^Members \(\d+\)$/ })
+			).toHaveCount(0);
+		} finally {
+			await page.context().close();
+		}
+	});
+});
diff --git a/dashboard/tests/e2e/fixtures/role-page.ts b/dashboard/tests/e2e/fixtures/role-page.ts
new file mode 100644
index 0000000..8a5ef93
--- /dev/null
+++ b/dashboard/tests/e2e/fixtures/role-page.ts
@@ -0,0 +1,46 @@
+// Helpers for tests that drive the dashboard as a non-bootstrap admin
+// (member with an app-membership row, custom InstanceRole, etc.).
+//
+// `loginAsUserToken` exchanges username/password for a bearer token
+// via the admin API. `pageWithUserToken` opens a fresh browser
+// context, seeds the dashboard's localStorage entry, and returns the
+// page ready to navigate. Callers are responsible for closing the
+// returned page's context.
+
+import { expect, request, type Browser, type Page } from '@playwright/test';
+
+const API_BASE = process.env.E2E_API_BASE ?? 'http://127.0.0.1:18080';
+
+export async function loginAsUserToken(
+	username: string,
+	password: string
+): Promise<string> {
+	const probe = await request.newContext({ baseURL: API_BASE });
+	try {
+		const res = await probe.post('/api/v1/admin/auth/login', {
+			data: { username, password },
+			headers: { 'content-type': 'application/json' }
+		});
+		expect(res.ok()).toBe(true);
+		return ((await res.json()) as { token: string }).token;
+	} finally {
+		await probe.dispose();
+	}
+}
+
+export async function pageWithUserToken(
+	browser: Browser,
+	token: string
+): Promise<Page> {
+	const ctx = await browser.newContext({ storageState: undefined });
+	const page = await ctx.newPage();
+	// Seed localStorage on the right origin, then navigate normally.
+	await page.goto('/admin/login');
+	await page.evaluate(
+		([key, value]) => {
+			localStorage.setItem(key, value);
+		},
+		['picloud.admin.token', token]
+	);
+	return page;
+}
diff --git a/dashboard/tests/e2e/members/members.spec.ts b/dashboard/tests/e2e/members/members.spec.ts
index 8d20af5..07c2e56 100644
--- a/dashboard/tests/e2e/members/members.spec.ts
+++ b/dashboard/tests/e2e/members/members.spec.ts
@@ -1,14 +1,13 @@
-import { expect, type Browser, type Page } from '@playwright/test';
+import { expect } from '@playwright/test';
 import { test } from '../fixtures/ids';
 import { CleanupRegistry } from '../fixtures/cleanup';
 import { adminApi } from '../fixtures/api';
+import { loginAsUserToken, pageWithUserToken } from '../fixtures/role-page';
 
 // Phase B5 — App Members. Setup creates one or two extra admin
 // users via the API; tests drive the Members tab through the
 // dashboard like a real app admin would.
 
-const API_BASE = process.env.E2E_API_BASE ?? 'http://127.0.0.1:18080';
-
 const cleanup = new CleanupRegistry();
 test.afterEach(async () => {
 	await cleanup.run();
@@ -38,36 +37,6 @@ async function createMemberUser(username: string): Promise<string> {
 	}
 }
 
-async function loginAsUserToken(username: string, password: string): Promise<string> {
-	const probe = await (await import('@playwright/test')).request.newContext({
-		baseURL: API_BASE
-	});
-	try {
-		const res = await probe.post('/api/v1/admin/auth/login', {
-			data: { username, password },
-			headers: { 'content-type': 'application/json' }
-		});
-		expect(res.ok()).toBe(true);
-		return ((await res.json()) as { token: string }).token;
-	} finally {
-		await probe.dispose();
-	}
-}
-
-async function pageWithUserToken(browser: Browser, token: string): Promise<Page> {
-	const ctx = await browser.newContext({ storageState: undefined });
-	const page = await ctx.newPage();
-	// Seed localStorage on the right origin, then navigate normally.
-	await page.goto('/admin/login');
-	await page.evaluate(
-		([key, value]) => {
-			localStorage.setItem(key, value);
-		},
-		['picloud.admin.token', token]
-	);
-	return page;
-}
-
 test.describe('B5 app members', () => {
 	test('invite a member-role user, then remove them', async ({ page, uniqueSlug, uniqueUsername }) => {
 		const slug = uniqueSlug('mem');
diff --git a/dashboard/tests/e2e/scripts/scripts.spec.ts b/dashboard/tests/e2e/scripts/scripts.spec.ts
index 19a964a..1477abf 100644
--- a/dashboard/tests/e2e/scripts/scripts.spec.ts
+++ b/dashboard/tests/e2e/scripts/scripts.spec.ts
@@ -2,6 +2,41 @@ import { expect, type Page } from '@playwright/test';
 import { test } from '../fixtures/ids';
 import { CleanupRegistry } from '../fixtures/cleanup';
 import { adminApi } from '../fixtures/api';
+import { loginAsUserToken, pageWithUserToken } from '../fixtures/role-page';
+
+const MEMBER_PW = 'e2e-member-pw';
+
+async function seedAppScriptAndMember(opts: {
+	slug: string;
+	username: string;
+	role: 'viewer' | 'editor';
+}): Promise<{ scriptId: string; userId: string }> {
+	const api = await adminApi();
+	try {
+		const appRes = await api.post('/api/v1/admin/apps', {
+			data: { slug: opts.slug, name: opts.slug }
+		});
+		expect(appRes.ok()).toBe(true);
+		const appId = ((await appRes.json()) as { id: string }).id;
+		const scriptRes = await api.post('/api/v1/admin/scripts', {
+			data: { app_id: appId, name: `${opts.slug}-sc`, source: HELLO_RHAI }
+		});
+		expect(scriptRes.ok()).toBe(true);
+		const scriptId = ((await scriptRes.json()) as { id: string }).id;
+		const userRes = await api.post('/api/v1/admin/admins', {
+			data: { username: opts.username, password: MEMBER_PW, instance_role: 'member' }
+		});
+		expect(userRes.ok()).toBe(true);
+		const userId = ((await userRes.json()) as { id: string }).id;
+		const memberRes = await api.post(`/api/v1/admin/apps/${opts.slug}/members`, {
+			data: { user_id: userId, role: opts.role }
+		});
+		expect(memberRes.ok()).toBe(true);
+		return { scriptId, userId };
+	} finally {
+		await api.dispose();
+	}
+}
 
 // Phase B3 — Scripts CRUD + Editor. The script editor lives at
 // /admin/scripts/{id}. Setup uses the API to create the app (and
@@ -175,6 +210,105 @@ test.describe('B3 settings', () => {
 	});
 });
 
+test.describe('B3 scripts role shadowing', () => {
+	test('viewer: no Delete header, no Save/Format on Edit, no Add route on Routing', async ({
+		browser,
+		uniqueSlug,
+		uniqueUsername
+	}) => {
+		const slug = uniqueSlug('vscr');
+		const username = uniqueUsername('viewer');
+		const { scriptId, userId } = await seedAppScriptAndMember({
+			slug,
+			username,
+			role: 'viewer'
+		});
+		cleanup.app(slug);
+		cleanup.adminUser(userId);
+
+		const token = await loginAsUserToken(username, MEMBER_PW);
+		const page = await pageWithUserToken(browser, token);
+		try {
+			await page.goto(`/admin/scripts/${scriptId}`);
+			// Header Delete is hidden for non-admins.
+			await expect(page.getByRole('button', { name: /^Delete$/ })).toHaveCount(0);
+			// Save/Format on the Edit tab are hidden for viewers.
+			await expect(page.getByRole('button', { name: /^Save$/ })).toHaveCount(0);
+			await expect(
+				page.locator('.editor-header').getByRole('button', { name: 'Format' })
+			).toHaveCount(0);
+			// Test invoke is still visible (everyone with read access).
+			await expect(page.getByRole('button', { name: /^Send$/ })).toBeVisible();
+			// Routing tab loads, no +Add route.
+			await page.getByRole('button', { name: /Routing/ }).click();
+			await expect(page.getByRole('button', { name: /\+ Add route/ })).toHaveCount(0);
+			// Settings tab is absent for non-admins.
+			await expect(page.getByRole('button', { name: /^Settings$/ })).toHaveCount(0);
+		} finally {
+			await page.context().close();
+		}
+	});
+
+	test('viewer: CodeMirror is read-only', async ({
+		browser,
+		uniqueSlug,
+		uniqueUsername
+	}) => {
+		const slug = uniqueSlug('vro');
+		const username = uniqueUsername('viewer');
+		const { scriptId, userId } = await seedAppScriptAndMember({
+			slug,
+			username,
+			role: 'viewer'
+		});
+		cleanup.app(slug);
+		cleanup.adminUser(userId);
+
+		const token = await loginAsUserToken(username, MEMBER_PW);
+		const page = await pageWithUserToken(browser, token);
+		try {
+			await page.goto(`/admin/scripts/${scriptId}`);
+			const cm = page.locator('.cm-content').first();
+			await expect(cm).toBeVisible();
+			// CodeMirror sets contenteditable=false when EditorView.editable.of(false)
+			// is in effect; that's the canonical signal for read-only mode.
+			await expect(cm).toHaveAttribute('contenteditable', 'false');
+		} finally {
+			await page.context().close();
+		}
+	});
+
+	test('editor: Save visible, Delete header hidden', async ({
+		browser,
+		uniqueSlug,
+		uniqueUsername
+	}) => {
+		const slug = uniqueSlug('escr');
+		const username = uniqueUsername('editor');
+		const { scriptId, userId } = await seedAppScriptAndMember({
+			slug,
+			username,
+			role: 'editor'
+		});
+		cleanup.app(slug);
+		cleanup.adminUser(userId);
+
+		const token = await loginAsUserToken(username, MEMBER_PW);
+		const page = await pageWithUserToken(browser, token);
+		try {
+			await page.goto(`/admin/scripts/${scriptId}`);
+			// Editor sees Save (disabled until the buffer changes — that's fine).
+			await expect(page.getByRole('button', { name: /^Save$/ })).toBeVisible();
+			// Delete stays admin-only.
+			await expect(page.getByRole('button', { name: /^Delete$/ })).toHaveCount(0);
+			// Settings stays admin-only.
+			await expect(page.getByRole('button', { name: /^Settings$/ })).toHaveCount(0);
+		} finally {
+			await page.context().close();
+		}
+	});
+});
+
 test.describe('B3 adversarial', () => {
 	test('infinite loop script hits the sandbox timeout', async ({ page, uniqueSlug }) => {
 		const slug = uniqueSlug('loop');