diff --git a/e2e/tests/us10-mitre-autocomplete.spec.ts b/e2e/tests/us10-mitre-autocomplete.spec.ts
new file mode 100644
index 0000000..dbb29a8
--- /dev/null
+++ b/e2e/tests/us10-mitre-autocomplete.spec.ts
@@ -0,0 +1,174 @@
+/**
+ * US-10 — MITRE ATT&CK autocomplete.
+ * Covers AC-10.1 → AC-10.5.
+ *
+ * AC-10.1 (make update-mitre CLI target) is not exercised from Playwright;
+ * the bundle is assumed present in the container image.
+ */
+import { test, expect } from '@playwright/test';
+import {
+  adminToken,
+  createEngagement,
+  deleteEngagement,
+  deleteUserByUsername,
+  ensureUser,
+  login,
+  makeClient,
+} from '../fixtures/api';
+import { seedTokenInStorage } from '../fixtures/auth';
+
+const REDTEAM_USER = 'us10-redteam';
+const PASS = 'us10-pass-strong';
+
+interface Simulation {
+  id: number;
+  [key: string]: unknown;
+}
+
+async function createSimulation(
+  token: string,
+  engagementId: number,
+  name = 'US-10 sim',
+): Promise<Simulation> {
+  const client = makeClient(token);
+  const r = await client.post(`/engagements/${engagementId}/simulations`, { name });
+  if (r.status !== 201) {
+    throw new Error(`create simulation failed: ${r.status} ${JSON.stringify(r.data)}`);
+  }
+  return r.data as Simulation;
+}
+
+async function deleteSimulation(token: string, simId: number): Promise<void> {
+  const client = makeClient(token);
+  await client.delete(`/simulations/${simId}`);
+}
+
+test.describe('US-10 — MITRE autocomplete', () => {
+  let redteamToken: string;
+  let engagementId: number;
+
+  test.beforeAll(async () => {
+    await ensureUser(REDTEAM_USER, PASS, 'redteam');
+    redteamToken = (await login(REDTEAM_USER, PASS)).token;
+    const eng = await createEngagement(redteamToken, {
+      name: 'US-10 Test Engagement',
+      start_date: '2026-01-01',
+    });
+    engagementId = eng.id;
+  });
+
+  test.afterAll(async () => {
+    try {
+      const tok = await adminToken();
+      await deleteEngagement(tok, engagementId);
+      await deleteUserByUsername(tok, REDTEAM_USER);
+    } catch {
+      /* noop */
+    }
+  });
+
+  test('AC-10.1 — bundle present in container (skipped: CLI-only, bundle assumed committed)', async () => {
+    // AC-10.1 is a Makefile target test. We verify the bundle is loaded
+    // indirectly by checking the API returns results (not 503).
+    const client = makeClient(redteamToken);
+    const r = await client.get('/mitre/techniques?q=T1059');
+    // If bundle not loaded, we'd get 503 — this confirms it loaded OK
+    expect(r.status).not.toBe(503);
+  });
+
+  test('AC-10.2 — GET /api/mitre/techniques?q= returns max 20 results with id/name/tactics', async () => {
+    const client = makeClient(redteamToken);
+
+    // Search by id prefix
+    const rId = await client.get('/mitre/techniques?q=T1059');
+    expect(rId.status).toBe(200);
+    expect(Array.isArray(rId.data)).toBe(true);
+    expect(rId.data.length).toBeGreaterThan(0);
+    expect(rId.data.length).toBeLessThanOrEqual(20);
+
+    const first = rId.data[0];
+    expect(first).toHaveProperty('id');
+    expect(first).toHaveProperty('name');
+    expect(first).toHaveProperty('tactics');
+    expect(Array.isArray(first.tactics)).toBe(true);
+
+    // Exact id match comes first
+    const exactMatch = rId.data.find((t: { id: string }) => t.id === 'T1059');
+    expect(exactMatch).toBeTruthy();
+    expect(rId.data[0].id).toBe('T1059');
+
+    // Search by name (case-insensitive)
+    const rName = await client.get(
+      '/mitre/techniques?q=command%20and%20scripting%20interpreter',
+    );
+    expect(rName.status).toBe(200);
+    expect(rName.data.length).toBeGreaterThan(0);
+    const nameMatch = rName.data.find((t: { name: string }) =>
+      t.name.toLowerCase().includes('command and scripting'),
+    );
+    expect(nameMatch).toBeTruthy();
+  });
+
+  test('AC-10.3 — 503 if bundle not loaded (verified by absence: bundle IS loaded)', async () => {
+    const client = makeClient(redteamToken);
+    // We can only test the happy path from e2e; 503 requires a container
+    // without the bundle. We verify the endpoint does NOT return 503,
+    // confirming the bundle is loaded.
+    const r = await client.get('/mitre/techniques?q=T1');
+    expect(r.status).toBe(200);
+  });
+
+  test('AC-10.4 — sub-techniques (T1059.001) included in search results', async () => {
+    const client = makeClient(redteamToken);
+    const r = await client.get('/mitre/techniques?q=T1059.001');
+    expect(r.status).toBe(200);
+    expect(r.data.length).toBeGreaterThan(0);
+    const subtech = r.data.find((t: { id: string }) => t.id === 'T1059.001');
+    expect(subtech).toBeTruthy();
+    expect(subtech.name).toBeTruthy();
+  });
+
+  test('AC-10.5 — MitreTechniquePicker: input, dropdown, keyboard nav, selection fills both fields', async ({
+    page,
+    context,
+  }) => {
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-10.5 sim');
+
+    await seedTokenInStorage(context, redteamToken);
+    await page.goto(`/engagements/${engagementId}/simulations/${sim.id}/edit`);
+
+    const picker = page.getByRole('combobox', { name: /mitre technique/i });
+    await expect(picker).toBeVisible();
+
+    // Type a query — after debounce (200ms) the dropdown opens with results
+    await picker.fill('T1059');
+    // Wait for dropdown to appear (debounce + network)
+    const listbox = page.getByRole('listbox', { name: /mitre techniques/i });
+    await expect(listbox).toBeVisible({ timeout: 5_000 });
+
+    // Options visible in expected format: "T1059 — Command and Scripting Interpreter (...)"
+    const options = listbox.getByRole('option');
+    await expect(options.first()).toBeVisible();
+    const firstText = await options.first().textContent();
+    expect(firstText).toMatch(/T1059/);
+    expect(firstText).toMatch(/—/);
+
+    // Keyboard navigation: ArrowDown selects item, Enter confirms
+    await picker.press('ArrowDown');
+    await picker.press('Enter');
+
+    // After selection the dropdown closes and input shows the selected value
+    await expect(listbox).not.toBeVisible();
+    const inputValue = await picker.inputValue();
+    expect(inputValue).toMatch(/T1059/);
+    expect(inputValue).toMatch(/—/);
+
+    // Escape closes the dropdown
+    await picker.fill('T1');
+    await expect(listbox).toBeVisible({ timeout: 5_000 });
+    await picker.press('Escape');
+    await expect(listbox).not.toBeVisible();
+
+    await deleteSimulation(redteamToken, sim.id);
+  });
+});
diff --git a/e2e/tests/us11-workflow-transitions.spec.ts b/e2e/tests/us11-workflow-transitions.spec.ts
new file mode 100644
index 0000000..b83ee29
--- /dev/null
+++ b/e2e/tests/us11-workflow-transitions.spec.ts
@@ -0,0 +1,245 @@
+/**
+ * US-11 — workflow transitions.
+ * Covers AC-11.1 → AC-11.5.
+ */
+import { test, expect } from '@playwright/test';
+import {
+  adminToken,
+  createEngagement,
+  deleteEngagement,
+  deleteUserByUsername,
+  ensureUser,
+  login,
+  makeClient,
+} from '../fixtures/api';
+import { seedTokenInStorage } from '../fixtures/auth';
+
+const REDTEAM_USER = 'us11-redteam';
+const SOC_USER = 'us11-soc';
+const PASS = 'us11-pass-strong';
+
+interface Simulation {
+  id: number;
+  status: string;
+  [key: string]: unknown;
+}
+
+async function createSimulation(
+  token: string,
+  engagementId: number,
+  name = 'US-11 sim',
+): Promise<Simulation> {
+  const client = makeClient(token);
+  const r = await client.post(`/engagements/${engagementId}/simulations`, { name });
+  if (r.status !== 201) {
+    throw new Error(`create simulation failed: ${r.status} ${JSON.stringify(r.data)}`);
+  }
+  return r.data as Simulation;
+}
+
+async function deleteSimulation(token: string, simId: number): Promise<void> {
+  const client = makeClient(token);
+  await client.delete(`/simulations/${simId}`);
+}
+
+test.describe('US-11 — workflow transitions', () => {
+  let redteamToken: string;
+  let socToken: string;
+  let engagementId: number;
+
+  test.beforeAll(async () => {
+    await ensureUser(REDTEAM_USER, PASS, 'redteam');
+    await ensureUser(SOC_USER, PASS, 'soc');
+    redteamToken = (await login(REDTEAM_USER, PASS)).token;
+    socToken = (await login(SOC_USER, PASS)).token;
+    const eng = await createEngagement(redteamToken, {
+      name: 'US-11 Test Engagement',
+      start_date: '2026-01-01',
+    });
+    engagementId = eng.id;
+  });
+
+  test.afterAll(async () => {
+    try {
+      const tok = await adminToken();
+      await deleteEngagement(tok, engagementId);
+      for (const u of [REDTEAM_USER, SOC_USER]) {
+        await deleteUserByUsername(tok, u);
+      }
+    } catch {
+      /* noop */
+    }
+  });
+
+  test('AC-11.1 — pending→review_required valid (redteam); invalid target → 409', async () => {
+    const rtClient = makeClient(redteamToken);
+
+    // pending → review_required: valid
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-11.1 sim');
+    const rOk = await rtClient.post(`/simulations/${sim.id}/transition`, {
+      to: 'review_required',
+    });
+    expect(rOk.status).toBe(200);
+    expect(rOk.data.status).toBe('review_required');
+
+    // Invalid target → 409
+    const simBad = await createSimulation(redteamToken, engagementId, 'AC-11.1 bad sim');
+    const rBad = await rtClient.post(`/simulations/${simBad.id}/transition`, {
+      to: 'done',
+    });
+    expect(rBad.status).toBe(409);
+    expect(rBad.data.error).toMatch(/invalid transition/i);
+
+    await deleteSimulation(redteamToken, sim.id);
+    await deleteSimulation(redteamToken, simBad.id);
+  });
+
+  test('AC-11.1 — in_progress→review_required valid (redteam)', async () => {
+    const rtClient = makeClient(redteamToken);
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-11.1 in_progress sim');
+
+    // Trigger in_progress via auto-transition
+    await rtClient.patch(`/simulations/${sim.id}`, { name: 'trigger' });
+    const r = await rtClient.post(`/simulations/${sim.id}/transition`, {
+      to: 'review_required',
+    });
+    expect(r.status).toBe(200);
+    expect(r.data.status).toBe('review_required');
+
+    await deleteSimulation(redteamToken, sim.id);
+  });
+
+  test('AC-11.2 — review_required→done valid for redteam and soc', async () => {
+    const rtClient = makeClient(redteamToken);
+    const socClient = makeClient(socToken);
+
+    // redteam can close
+    const simRT = await createSimulation(redteamToken, engagementId, 'AC-11.2 redteam close');
+    await rtClient.post(`/simulations/${simRT.id}/transition`, { to: 'review_required' });
+    const rRT = await rtClient.post(`/simulations/${simRT.id}/transition`, { to: 'done' });
+    expect(rRT.status).toBe(200);
+    expect(rRT.data.status).toBe('done');
+
+    // soc can close
+    const simSOC = await createSimulation(redteamToken, engagementId, 'AC-11.2 soc close');
+    await rtClient.post(`/simulations/${simSOC.id}/transition`, { to: 'review_required' });
+    const rSOC = await socClient.post(`/simulations/${simSOC.id}/transition`, { to: 'done' });
+    expect(rSOC.status).toBe(200);
+    expect(rSOC.data.status).toBe('done');
+
+    // done → review_required is invalid (409)
+    const rBack = await rtClient.post(`/simulations/${simRT.id}/transition`, {
+      to: 'review_required',
+    });
+    expect(rBack.status).toBe(409);
+
+    await deleteSimulation(redteamToken, simRT.id);
+    await deleteSimulation(redteamToken, simSOC.id);
+  });
+
+  test('AC-11.3 — no backward transitions; no →pending or →in_progress via endpoint', async () => {
+    const rtClient = makeClient(redteamToken);
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-11.3 sim');
+
+    // done → pending: invalid
+    await rtClient.post(`/simulations/${sim.id}/transition`, { to: 'review_required' });
+    await rtClient.post(`/simulations/${sim.id}/transition`, { to: 'done' });
+    const rPending = await rtClient.post(`/simulations/${sim.id}/transition`, {
+      to: 'pending',
+    });
+    expect(rPending.status).toBe(409);
+    expect(rPending.data.error).toMatch(/invalid transition/i);
+
+    // →in_progress via endpoint is always invalid
+    const simNew = await createSimulation(redteamToken, engagementId, 'AC-11.3 in_progress');
+    const rIP = await rtClient.post(`/simulations/${simNew.id}/transition`, {
+      to: 'in_progress',
+    });
+    expect(rIP.status).toBe(409);
+
+    await deleteSimulation(redteamToken, sim.id);
+    await deleteSimulation(redteamToken, simNew.id);
+  });
+
+  test('AC-11.4 — workflow buttons visible per role+status in UI', async ({
+    page,
+    context,
+  }) => {
+    const rtClient = makeClient(redteamToken);
+
+    // pending → "Marquer en revue" visible for redteam; "Clôturer" hidden
+    const simPending = await createSimulation(
+      redteamToken,
+      engagementId,
+      'AC-11.4 pending UI',
+    );
+    await seedTokenInStorage(context, redteamToken);
+    await page.goto(`/engagements/${engagementId}/simulations/${simPending.id}/edit`);
+    await expect(page.getByRole('button', { name: /marquer en revue/i })).toBeVisible();
+    await expect(page.getByRole('button', { name: /clôturer/i })).toHaveCount(0);
+
+    // in_progress → "Marquer en revue" visible
+    const simIP = await createSimulation(redteamToken, engagementId, 'AC-11.4 in_progress UI');
+    await rtClient.patch(`/simulations/${simIP.id}`, { name: 'trigger' });
+    await page.goto(`/engagements/${engagementId}/simulations/${simIP.id}/edit`);
+    await expect(page.getByRole('button', { name: /marquer en revue/i })).toBeVisible();
+    await expect(page.getByRole('button', { name: /clôturer/i })).toHaveCount(0);
+
+    // review_required → "Clôturer" visible for redteam; "Marquer en revue" hidden
+    const simRR = await createSimulation(redteamToken, engagementId, 'AC-11.4 review UI');
+    await rtClient.post(`/simulations/${simRR.id}/transition`, { to: 'review_required' });
+    await page.goto(`/engagements/${engagementId}/simulations/${simRR.id}/edit`);
+    await expect(page.getByRole('button', { name: /clôturer/i })).toBeVisible();
+    await expect(page.getByRole('button', { name: /marquer en revue/i })).toHaveCount(0);
+
+    // review_required → "Clôturer" also visible for SOC
+    await seedTokenInStorage(context, socToken);
+    await page.goto(`/engagements/${engagementId}/simulations/${simRR.id}/edit`);
+    await expect(page.getByRole('button', { name: /clôturer/i })).toBeVisible();
+
+    // done → both buttons hidden
+    await rtClient.post(`/simulations/${simRR.id}/transition`, { to: 'done' });
+    await seedTokenInStorage(context, redteamToken);
+    await page.goto(`/engagements/${engagementId}/simulations/${simRR.id}/edit`);
+    await expect(page.getByRole('button', { name: /marquer en revue/i })).toHaveCount(0);
+    await expect(page.getByRole('button', { name: /clôturer/i })).toHaveCount(0);
+
+    await deleteSimulation(redteamToken, simPending.id);
+    await deleteSimulation(redteamToken, simIP.id);
+    await deleteSimulation(redteamToken, simRR.id);
+  });
+
+  test('AC-11.5 — after transition, badge updates in UI (TanStack Query invalidation)', async ({
+    page,
+    context,
+  }) => {
+    const rtClient = makeClient(redteamToken);
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-11.5 badge sim');
+
+    await seedTokenInStorage(context, redteamToken);
+    await page.goto(`/engagements/${engagementId}/simulations/${sim.id}/edit`);
+
+    // Initially pending
+    const badge = page.getByTestId('simulation-status-badge');
+    await expect(badge).toHaveAttribute('data-status', 'pending');
+
+    // Click "Marquer en revue"
+    await page.getByRole('button', { name: /marquer en revue/i }).click();
+
+    // Badge updates to review_required without page reload
+    await expect(badge).toHaveAttribute('data-status', 'review_required', { timeout: 5_000 });
+
+    // "Clôturer" now visible; click it
+    await page.getByRole('button', { name: /clôturer/i }).click();
+    await expect(badge).toHaveAttribute('data-status', 'done', { timeout: 5_000 });
+
+    // Verify list is also updated: navigate to engagement detail and check badge there
+    await page.goto(`/engagements/${engagementId}`);
+    const listBadge = page
+      .getByRole('row', { name: /AC-11.5 badge sim/i })
+      .getByTestId('simulation-status-badge');
+    await expect(listBadge).toHaveAttribute('data-status', 'done');
+
+    await deleteSimulation(redteamToken, sim.id);
+  });
+});
diff --git a/e2e/tests/us12-simulation-delete.spec.ts b/e2e/tests/us12-simulation-delete.spec.ts
new file mode 100644
index 0000000..344d735
--- /dev/null
+++ b/e2e/tests/us12-simulation-delete.spec.ts
@@ -0,0 +1,153 @@
+/**
+ * US-12 — simulation delete (RBAC + cascade + confirm modal).
+ * Covers AC-12.1 → AC-12.4.
+ */
+import { test, expect } from '@playwright/test';
+import {
+  adminToken,
+  createEngagement,
+  deleteEngagement,
+  deleteUserByUsername,
+  ensureUser,
+  login,
+  makeClient,
+} from '../fixtures/api';
+import { seedTokenInStorage } from '../fixtures/auth';
+
+const REDTEAM_USER = 'us12-redteam';
+const SOC_USER = 'us12-soc';
+const PASS = 'us12-pass-strong';
+
+interface Simulation {
+  id: number;
+  engagement_id: number;
+  name: string;
+  status: string;
+  [key: string]: unknown;
+}
+
+async function createSimulation(
+  token: string,
+  engagementId: number,
+  name = 'US-12 sim',
+): Promise<Simulation> {
+  const client = makeClient(token);
+  const r = await client.post(`/engagements/${engagementId}/simulations`, { name });
+  if (r.status !== 201) {
+    throw new Error(`create simulation failed: ${r.status} ${JSON.stringify(r.data)}`);
+  }
+  return r.data as Simulation;
+}
+
+test.describe('US-12 — simulation delete', () => {
+  let redteamToken: string;
+  let socToken: string;
+  let engagementId: number;
+
+  test.beforeAll(async () => {
+    await ensureUser(REDTEAM_USER, PASS, 'redteam');
+    await ensureUser(SOC_USER, PASS, 'soc');
+    redteamToken = (await login(REDTEAM_USER, PASS)).token;
+    socToken = (await login(SOC_USER, PASS)).token;
+    const eng = await createEngagement(redteamToken, {
+      name: 'US-12 Test Engagement',
+      start_date: '2026-01-01',
+    });
+    engagementId = eng.id;
+  });
+
+  test.afterAll(async () => {
+    try {
+      const tok = await adminToken();
+      await deleteEngagement(tok, engagementId);
+      for (const u of [REDTEAM_USER, SOC_USER]) {
+        await deleteUserByUsername(tok, u);
+      }
+    } catch {
+      /* noop */
+    }
+  });
+
+  test('AC-12.1 — DELETE /api/simulations/<sid> (redteam) → 204, then 404', async () => {
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-12.1 to delete');
+    const client = makeClient(redteamToken);
+
+    const rDel = await client.delete(`/simulations/${sim.id}`);
+    expect(rDel.status).toBe(204);
+
+    const rGet = await client.get(`/simulations/${sim.id}`);
+    expect(rGet.status).toBe(404);
+  });
+
+  test('AC-12.2 — soc → 403 on DELETE', async () => {
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-12.2 soc blocked');
+    const socClient = makeClient(socToken);
+
+    const r = await socClient.delete(`/simulations/${sim.id}`);
+    expect(r.status).toBe(403);
+
+    // Clean up
+    const rtClient = makeClient(redteamToken);
+    await rtClient.delete(`/simulations/${sim.id}`);
+  });
+
+  test('AC-12.3 — cascade: deleting engagement deletes its simulations', async () => {
+    const adminTok = await adminToken();
+    const adminClient = makeClient(adminTok);
+
+    // Create a fresh engagement with simulations
+    const eng = await createEngagement(redteamToken, {
+      name: 'US-12 cascade test',
+      start_date: '2026-01-01',
+    });
+    const s1 = await createSimulation(redteamToken, eng.id, 'cascade sim 1');
+    const s2 = await createSimulation(redteamToken, eng.id, 'cascade sim 2');
+
+    // Delete the engagement
+    await deleteEngagement(redteamToken, eng.id);
+
+    // Simulations must be gone
+    const rS1 = await adminClient.get(`/simulations/${s1.id}`);
+    expect(rS1.status).toBe(404);
+    const rS2 = await adminClient.get(`/simulations/${s2.id}`);
+    expect(rS2.status).toBe(404);
+  });
+
+  test('AC-12.4 — delete button visible for redteam, confirmation modal, deletes and redirects', async ({
+    page,
+    context,
+  }) => {
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-12.4 UI delete');
+
+    await seedTokenInStorage(context, redteamToken);
+    await page.goto(`/engagements/${engagementId}/simulations/${sim.id}/edit`);
+
+    // Delete button is visible for redteam
+    const deleteBtn = page.getByRole('button', { name: /supprimer/i });
+    await expect(deleteBtn).toBeVisible();
+
+    // SOC should NOT see delete button
+    await seedTokenInStorage(context, socToken);
+    await page.goto(`/engagements/${engagementId}/simulations/${sim.id}/edit`);
+    await expect(page.getByRole('button', { name: /supprimer/i })).toHaveCount(0);
+
+    // Back to redteam — click delete, confirm modal appears
+    await seedTokenInStorage(context, redteamToken);
+    await page.goto(`/engagements/${engagementId}/simulations/${sim.id}/edit`);
+    await page.getByRole('button', { name: /supprimer/i }).click();
+
+    // Confirmation dialog must appear
+    const dialog = page.getByRole('dialog');
+    await expect(dialog).toBeVisible();
+    await expect(dialog.getByText(/supprimer la simulation/i)).toBeVisible();
+
+    // Confirm deletion
+    await dialog.getByRole('button', { name: /supprimer/i }).click();
+
+    // Should navigate back to engagement detail
+    await page.waitForURL(new RegExp(`/engagements/${engagementId}$`));
+
+    // Simulation no longer in list
+    await expect(page.getByRole('row', { name: /AC-12.4 UI delete/i })).toHaveCount(0);
+  });
+});
diff --git a/e2e/tests/us7-simulation-create.spec.ts b/e2e/tests/us7-simulation-create.spec.ts
new file mode 100644
index 0000000..e174151
--- /dev/null
+++ b/e2e/tests/us7-simulation-create.spec.ts
@@ -0,0 +1,192 @@
+/**
+ * US-7 — redteam creates a simulation inside an engagement.
+ * Covers AC-7.1 → AC-7.6.
+ */
+import { test, expect } from '@playwright/test';
+import {
+  adminToken,
+  createEngagement,
+  deleteEngagement,
+  deleteUserByUsername,
+  ensureUser,
+  login,
+  makeClient,
+} from '../fixtures/api';
+import { seedTokenInStorage } from '../fixtures/auth';
+
+const REDTEAM_USER = 'us7-redteam';
+const SOC_USER = 'us7-soc';
+const PASS = 'us7-pass-strong';
+
+interface Simulation {
+  id: number;
+  engagement_id: number;
+  name: string;
+  status: string;
+  created_at: string;
+  [key: string]: unknown;
+}
+
+async function createSimulation(
+  token: string,
+  engagementId: number,
+  payload: { name: string },
+): Promise<Simulation> {
+  const client = makeClient(token);
+  const r = await client.post(`/engagements/${engagementId}/simulations`, payload);
+  if (r.status !== 201) {
+    throw new Error(`create simulation failed: ${r.status} ${JSON.stringify(r.data)}`);
+  }
+  return r.data as Simulation;
+}
+
+async function deleteSimulation(token: string, simId: number): Promise<void> {
+  const client = makeClient(token);
+  await client.delete(`/simulations/${simId}`);
+}
+
+test.describe('US-7 — simulation create', () => {
+  let redteamToken: string;
+  let socToken: string;
+  let engagementId: number;
+
+  test.beforeAll(async () => {
+    await ensureUser(REDTEAM_USER, PASS, 'redteam');
+    await ensureUser(SOC_USER, PASS, 'soc');
+    redteamToken = (await login(REDTEAM_USER, PASS)).token;
+    socToken = (await login(SOC_USER, PASS)).token;
+    const eng = await createEngagement(redteamToken, {
+      name: 'US-7 Test Engagement',
+      start_date: '2026-01-01',
+    });
+    engagementId = eng.id;
+  });
+
+  test.afterAll(async () => {
+    try {
+      const tok = await adminToken();
+      await deleteEngagement(tok, engagementId);
+      for (const u of [REDTEAM_USER, SOC_USER]) {
+        await deleteUserByUsername(tok, u);
+      }
+    } catch {
+      /* noop */
+    }
+  });
+
+  test('AC-7.1 — POST creates simulation with status pending, name required', async () => {
+    const sim = await createSimulation(redteamToken, engagementId, { name: 'Test sim 7.1' });
+    expect(sim.id).toBeTruthy();
+    expect(sim.engagement_id).toBe(engagementId);
+    expect(sim.name).toBe('Test sim 7.1');
+    expect(sim.status).toBe('pending');
+    expect(sim.created_at).toBeTruthy();
+
+    // name required: blank name → 400
+    const client = makeClient(redteamToken);
+    const r = await client.post(`/engagements/${engagementId}/simulations`, { name: '' });
+    expect(r.status).toBe(400);
+
+    await deleteSimulation(redteamToken, sim.id);
+  });
+
+  test('AC-7.2 — soc role → 403 on POST', async () => {
+    const client = makeClient(socToken);
+    const r = await client.post(`/engagements/${engagementId}/simulations`, {
+      name: 'soc-blocked',
+    });
+    expect(r.status).toBe(403);
+  });
+
+  test('AC-7.3 — unknown engagement → 404; existing engagement with no sims → empty list', async () => {
+    const client = makeClient(redteamToken);
+
+    const r404 = await client.post('/engagements/999999/simulations', { name: 'ghost' });
+    expect(r404.status).toBe(404);
+
+    // Create a fresh engagement with no sims and verify list is empty
+    const freshEng = await createEngagement(redteamToken, {
+      name: 'US-7 empty engagement',
+      start_date: '2026-01-01',
+    });
+    const listR = await client.get(`/engagements/${freshEng.id}/simulations`);
+    expect(listR.status).toBe(200);
+    expect(listR.data).toEqual([]);
+
+    await deleteEngagement(redteamToken, freshEng.id);
+  });
+
+  test('AC-7.4 — GET list returns sims ordered by created_at desc', async () => {
+    const client = makeClient(redteamToken);
+
+    const s1 = await createSimulation(redteamToken, engagementId, { name: 'First sim' });
+    // Small delay so created_at timestamps differ
+    await new Promise((r) => setTimeout(r, 50));
+    const s2 = await createSimulation(redteamToken, engagementId, { name: 'Second sim' });
+
+    const listR = await client.get(`/engagements/${engagementId}/simulations`);
+    expect(listR.status).toBe(200);
+    const list: Simulation[] = listR.data;
+    expect(list.length).toBeGreaterThanOrEqual(2);
+    // Most recent first
+    const ids = list.map((s) => s.id);
+    expect(ids.indexOf(s2.id)).toBeLessThan(ids.indexOf(s1.id));
+
+    await deleteSimulation(redteamToken, s1.id);
+    await deleteSimulation(redteamToken, s2.id);
+  });
+
+  test('AC-7.5 — /engagements/:eid shows Simulations section with list + "Nouvelle simulation" button for redteam', async ({
+    page,
+    context,
+  }) => {
+    const sim = await createSimulation(redteamToken, engagementId, { name: 'Visible sim' });
+
+    await seedTokenInStorage(context, redteamToken);
+    await page.goto(`/engagements/${engagementId}`);
+
+    // Simulations section visible
+    await expect(page.getByRole('heading', { name: /simulations/i })).toBeVisible();
+
+    // Required columns
+    for (const col of ['Name', 'MITRE', 'Status', 'Executed at']) {
+      await expect(page.getByRole('columnheader', { name: new RegExp(col, 'i') })).toBeVisible();
+    }
+
+    // The created simulation row is visible
+    await expect(page.getByRole('row', { name: /Visible sim/i })).toBeVisible();
+
+    // "Nouvelle simulation" button visible for redteam
+    await expect(
+      page.getByRole('link', { name: /nouvelle simulation/i }),
+    ).toBeVisible();
+
+    // SOC should NOT see "Nouvelle simulation" button
+    await seedTokenInStorage(context, socToken);
+    await page.goto(`/engagements/${engagementId}`);
+    await expect(page.getByRole('link', { name: /nouvelle simulation/i })).toHaveCount(0);
+
+    await deleteSimulation(redteamToken, sim.id);
+  });
+
+  test('AC-7.6 — clicking a simulation row navigates to /engagements/:eid/simulations/:sid/edit', async ({
+    page,
+    context,
+  }) => {
+    const sim = await createSimulation(redteamToken, engagementId, { name: 'Click me sim' });
+
+    await seedTokenInStorage(context, redteamToken);
+    await page.goto(`/engagements/${engagementId}`);
+
+    // Click the sim name link
+    await page.getByRole('link', { name: 'Click me sim' }).click();
+    await page.waitForURL(
+      new RegExp(`/engagements/${engagementId}/simulations/${sim.id}/edit`),
+    );
+    await expect(page.url()).toContain(
+      `/engagements/${engagementId}/simulations/${sim.id}/edit`,
+    );
+
+    await deleteSimulation(redteamToken, sim.id);
+  });
+});
diff --git a/e2e/tests/us8-simulation-redteam-fill.spec.ts b/e2e/tests/us8-simulation-redteam-fill.spec.ts
new file mode 100644
index 0000000..a8f91c2
--- /dev/null
+++ b/e2e/tests/us8-simulation-redteam-fill.spec.ts
@@ -0,0 +1,216 @@
+/**
+ * US-8 — redteam fills technical details of a simulation.
+ * Covers AC-8.1 → AC-8.6 (AC-8.6 defers to US-10 for the autocomplete UI detail).
+ */
+import { test, expect } from '@playwright/test';
+import {
+  adminToken,
+  createEngagement,
+  deleteEngagement,
+  deleteUserByUsername,
+  ensureUser,
+  login,
+  makeClient,
+} from '../fixtures/api';
+import { seedTokenInStorage } from '../fixtures/auth';
+
+const REDTEAM_USER = 'us8-redteam';
+const SOC_USER = 'us8-soc';
+const PASS = 'us8-pass-strong';
+
+interface Simulation {
+  id: number;
+  engagement_id: number;
+  name: string;
+  status: string;
+  [key: string]: unknown;
+}
+
+async function createSimulation(
+  token: string,
+  engagementId: number,
+  name = 'US-8 sim',
+): Promise<Simulation> {
+  const client = makeClient(token);
+  const r = await client.post(`/engagements/${engagementId}/simulations`, { name });
+  if (r.status !== 201) {
+    throw new Error(`create simulation failed: ${r.status} ${JSON.stringify(r.data)}`);
+  }
+  return r.data as Simulation;
+}
+
+async function deleteSimulation(token: string, simId: number): Promise<void> {
+  const client = makeClient(token);
+  await client.delete(`/simulations/${simId}`);
+}
+
+test.describe('US-8 — redteam fill simulation details', () => {
+  let redteamToken: string;
+  let socToken: string;
+  let engagementId: number;
+
+  test.beforeAll(async () => {
+    await ensureUser(REDTEAM_USER, PASS, 'redteam');
+    await ensureUser(SOC_USER, PASS, 'soc');
+    redteamToken = (await login(REDTEAM_USER, PASS)).token;
+    socToken = (await login(SOC_USER, PASS)).token;
+    const eng = await createEngagement(redteamToken, {
+      name: 'US-8 Test Engagement',
+      start_date: '2026-01-01',
+    });
+    engagementId = eng.id;
+  });
+
+  test.afterAll(async () => {
+    try {
+      const tok = await adminToken();
+      await deleteEngagement(tok, engagementId);
+      for (const u of [REDTEAM_USER, SOC_USER]) {
+        await deleteUserByUsername(tok, u);
+      }
+    } catch {
+      /* noop */
+    }
+  });
+
+  test('AC-8.1 — PATCH accepts all redteam fields (partial OK)', async () => {
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-8.1 sim');
+    const client = makeClient(redteamToken);
+
+    const patch = {
+      name: 'Updated name',
+      mitre_technique_id: 'T1059',
+      mitre_technique_name: 'Command and Scripting Interpreter',
+      description: 'Some description',
+      commands: 'cmd /c whoami\ncmd /c ipconfig',
+      prerequisites: 'Admin shell',
+      executed_at: '2026-05-01T12:00:00',
+      execution_result: 'Success',
+    };
+    const r = await client.patch(`/simulations/${sim.id}`, patch);
+    expect(r.status).toBe(200);
+    expect(r.data.name).toBe('Updated name');
+    expect(r.data.mitre_technique_id).toBe('T1059');
+    expect(r.data.mitre_technique_name).toBe('Command and Scripting Interpreter');
+    expect(r.data.description).toBe('Some description');
+    expect(r.data.commands).toBe('cmd /c whoami\ncmd /c ipconfig');
+    expect(r.data.prerequisites).toBe('Admin shell');
+    expect(r.data.execution_result).toBe('Success');
+
+    // Partial PATCH (only name) should also work
+    const rPartial = await client.patch(`/simulations/${sim.id}`, { name: 'Partial update' });
+    expect(rPartial.status).toBe(200);
+    expect(rPartial.data.name).toBe('Partial update');
+
+    await deleteSimulation(redteamToken, sim.id);
+  });
+
+  test('AC-8.2 — auto-transition pending→in_progress on PATCH with non-empty redteam field', async () => {
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-8.2 sim');
+    expect(sim.status).toBe('pending');
+    const client = makeClient(redteamToken);
+
+    // PATCH with a non-empty redteam field triggers auto-transition
+    const r = await client.patch(`/simulations/${sim.id}`, { name: 'trigger transition' });
+    expect(r.status).toBe(200);
+    expect(r.data.status).toBe('in_progress');
+
+    await deleteSimulation(redteamToken, sim.id);
+  });
+
+  test('AC-8.2 — auto-transition does NOT trigger for soc PATCH', async () => {
+    // Create sim then transition it to review_required so SOC can patch it
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-8.2 soc no-trigger');
+    const rtClient = makeClient(redteamToken);
+    // Move to in_progress first
+    await rtClient.patch(`/simulations/${sim.id}`, { name: 'AC-8.2 soc no-trigger' });
+    // Move to review_required
+    const tr = await rtClient.post(`/simulations/${sim.id}/transition`, {
+      to: 'review_required',
+    });
+    expect(tr.status).toBe(200);
+
+    // Now SOC patches soc-only fields — status must NOT change
+    const socClient = makeClient(socToken);
+    const rSoc = await socClient.patch(`/simulations/${sim.id}`, { soc_comment: 'noted' });
+    expect(rSoc.status).toBe(200);
+    expect(rSoc.data.status).toBe('review_required');
+
+    await deleteSimulation(redteamToken, sim.id);
+  });
+
+  test('AC-8.3 — commands stored and returned as raw multiline string', async () => {
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-8.3 sim');
+    const client = makeClient(redteamToken);
+    const cmds = 'cmd1\ncmd2\ncmd3';
+    const r = await client.patch(`/simulations/${sim.id}`, { commands: cmds });
+    expect(r.status).toBe(200);
+    expect(r.data.commands).toBe(cmds);
+
+    await deleteSimulation(redteamToken, sim.id);
+  });
+
+  test('AC-8.4 — invalid executed_at → 400; null clears field', async () => {
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-8.4 sim');
+    const client = makeClient(redteamToken);
+
+    const rBad = await client.patch(`/simulations/${sim.id}`, {
+      executed_at: 'not-a-date',
+    });
+    expect(rBad.status).toBe(400);
+    expect(rBad.data.error).toMatch(/invalid executed_at/i);
+
+    // Valid ISO 8601
+    const rOk = await client.patch(`/simulations/${sim.id}`, {
+      executed_at: '2026-05-01T09:00:00',
+    });
+    expect(rOk.status).toBe(200);
+
+    // Null clears the field
+    const rNull = await client.patch(`/simulations/${sim.id}`, { executed_at: null });
+    expect(rNull.status).toBe(200);
+
+    await deleteSimulation(redteamToken, sim.id);
+  });
+
+  test('AC-8.5 — edit page shows Red Team and SOC sections; redteam sees both editable, name validation', async ({
+    page,
+    context,
+  }) => {
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-8.5 sim');
+
+    await seedTokenInStorage(context, redteamToken);
+    await page.goto(`/engagements/${engagementId}/simulations/${sim.id}/edit`);
+
+    // Both sections visible
+    await expect(page.getByRole('heading', { name: /red team/i })).toBeVisible();
+    await expect(page.getByRole('heading', { name: /soc/i })).toBeVisible();
+
+    // Name field is present and enabled for redteam
+    const nameField = page.locator('#sim-name');
+    await expect(nameField).toBeVisible();
+    await expect(nameField).toBeEnabled();
+
+    // Clear the name, try to save → client validation error
+    await nameField.fill('');
+    await page.getByRole('button', { name: /save red team/i }).click();
+    await expect(page.getByText(/name is required/i)).toBeVisible();
+
+    await deleteSimulation(redteamToken, sim.id);
+  });
+
+  test('AC-8.6 — MITRE technique picker is present on the edit form', async ({
+    page,
+    context,
+  }) => {
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-8.6 sim');
+
+    await seedTokenInStorage(context, redteamToken);
+    await page.goto(`/engagements/${engagementId}/simulations/${sim.id}/edit`);
+
+    // MitreTechniquePicker renders an input with combobox role
+    await expect(page.getByRole('combobox', { name: /mitre technique/i })).toBeVisible();
+
+    await deleteSimulation(redteamToken, sim.id);
+  });
+});
diff --git a/e2e/tests/us9-soc-restricted-edit.spec.ts b/e2e/tests/us9-soc-restricted-edit.spec.ts
new file mode 100644
index 0000000..d8459c7
--- /dev/null
+++ b/e2e/tests/us9-soc-restricted-edit.spec.ts
@@ -0,0 +1,200 @@
+/**
+ * US-9 — SOC analyst fills their part; redteam fields blocked.
+ * Covers AC-9.1 → AC-9.4.
+ */
+import { test, expect } from '@playwright/test';
+import {
+  adminToken,
+  createEngagement,
+  deleteEngagement,
+  deleteUserByUsername,
+  ensureUser,
+  login,
+  makeClient,
+} from '../fixtures/api';
+import { seedTokenInStorage } from '../fixtures/auth';
+
+const REDTEAM_USER = 'us9-redteam';
+const SOC_USER = 'us9-soc';
+const PASS = 'us9-pass-strong';
+
+interface Simulation {
+  id: number;
+  status: string;
+  [key: string]: unknown;
+}
+
+async function createSimulation(
+  token: string,
+  engagementId: number,
+  name = 'US-9 sim',
+): Promise<Simulation> {
+  const client = makeClient(token);
+  const r = await client.post(`/engagements/${engagementId}/simulations`, { name });
+  if (r.status !== 201) {
+    throw new Error(`create simulation failed: ${r.status} ${JSON.stringify(r.data)}`);
+  }
+  return r.data as Simulation;
+}
+
+async function deleteSimulation(token: string, simId: number): Promise<void> {
+  const client = makeClient(token);
+  await client.delete(`/simulations/${simId}`);
+}
+
+async function advanceToReviewRequired(
+  redteamToken: string,
+  simId: number,
+): Promise<void> {
+  const client = makeClient(redteamToken);
+  // Trigger auto-transition to in_progress
+  await client.patch(`/simulations/${simId}`, { name: 'ready' });
+  // Transition to review_required
+  const r = await client.post(`/simulations/${simId}/transition`, {
+    to: 'review_required',
+  });
+  if (r.status !== 200) {
+    throw new Error(`transition to review_required failed: ${r.status}`);
+  }
+}
+
+test.describe('US-9 — SOC restricted edit', () => {
+  let redteamToken: string;
+  let socToken: string;
+  let engagementId: number;
+
+  test.beforeAll(async () => {
+    await ensureUser(REDTEAM_USER, PASS, 'redteam');
+    await ensureUser(SOC_USER, PASS, 'soc');
+    redteamToken = (await login(REDTEAM_USER, PASS)).token;
+    socToken = (await login(SOC_USER, PASS)).token;
+    const eng = await createEngagement(redteamToken, {
+      name: 'US-9 Test Engagement',
+      start_date: '2026-01-01',
+    });
+    engagementId = eng.id;
+  });
+
+  test.afterAll(async () => {
+    try {
+      const tok = await adminToken();
+      await deleteEngagement(tok, engagementId);
+      for (const u of [REDTEAM_USER, SOC_USER]) {
+        await deleteUserByUsername(tok, u);
+      }
+    } catch {
+      /* noop */
+    }
+  });
+
+  test('AC-9.1 — soc PATCH with redteam field → 403 soc cannot edit redteam fields', async () => {
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-9.1 sim');
+    await advanceToReviewRequired(redteamToken, sim.id);
+
+    const socClient = makeClient(socToken);
+
+    // Redteam field in payload → 403
+    const r = await socClient.patch(`/simulations/${sim.id}`, {
+      name: 'SOC tries to change name',
+    });
+    expect(r.status).toBe(403);
+    expect(r.data.error).toMatch(/soc cannot edit redteam fields/i);
+
+    // SOC-only fields → 200
+    const rOk = await socClient.patch(`/simulations/${sim.id}`, {
+      soc_comment: 'Detected',
+      log_source: 'SIEM',
+      logs: 'log entry',
+      incident_number: 'INC-001',
+    });
+    expect(rOk.status).toBe(200);
+
+    await deleteSimulation(redteamToken, sim.id);
+  });
+
+  test('AC-9.2 — soc PATCH blocked when status is pending or in_progress', async () => {
+    const socClient = makeClient(socToken);
+
+    // pending → 403
+    const simPending = await createSimulation(redteamToken, engagementId, 'AC-9.2 pending');
+    const rPending = await socClient.patch(`/simulations/${simPending.id}`, {
+      soc_comment: 'too early',
+    });
+    expect(rPending.status).toBe(403);
+    expect(rPending.data.error).toMatch(/simulation not ready for SOC review/i);
+
+    // in_progress → 403
+    const simInProgress = await createSimulation(
+      redteamToken,
+      engagementId,
+      'AC-9.2 in_progress',
+    );
+    const rtClient = makeClient(redteamToken);
+    await rtClient.patch(`/simulations/${simInProgress.id}`, { name: 'trigger' });
+    const rInProgress = await socClient.patch(`/simulations/${simInProgress.id}`, {
+      soc_comment: 'still too early',
+    });
+    expect(rInProgress.status).toBe(403);
+    expect(rInProgress.data.error).toMatch(/simulation not ready for SOC review/i);
+
+    await deleteSimulation(redteamToken, simPending.id);
+    await deleteSimulation(redteamToken, simInProgress.id);
+  });
+
+  test('AC-9.3 — edit page for soc: RT section read-only, SOC section editable when review_required', async ({
+    page,
+    context,
+  }) => {
+    const sim = await createSimulation(redteamToken, engagementId, 'AC-9.3 sim');
+    await advanceToReviewRequired(redteamToken, sim.id);
+
+    await seedTokenInStorage(context, socToken);
+    await page.goto(`/engagements/${engagementId}/simulations/${sim.id}/edit`);
+
+    // RT fields are disabled
+    await expect(page.locator('#sim-name')).toBeDisabled();
+    await expect(page.locator('#sim-description')).toBeDisabled();
+    await expect(page.locator('#sim-commands')).toBeDisabled();
+
+    // SOC fields are enabled
+    await expect(page.locator('#sim-log-source')).toBeEnabled();
+    await expect(page.locator('#sim-logs')).toBeEnabled();
+    await expect(page.locator('#sim-soc-comment')).toBeEnabled();
+    await expect(page.locator('#sim-incident')).toBeEnabled();
+
+    await deleteSimulation(redteamToken, sim.id);
+  });
+
+  test('AC-9.4 — soc visits pending/in_progress simulation: banner visible, SOC fields disabled', async ({
+    page,
+    context,
+  }) => {
+    // Test with pending status
+    const simPending = await createSimulation(redteamToken, engagementId, 'AC-9.4 pending');
+
+    await seedTokenInStorage(context, socToken);
+    await page.goto(`/engagements/${engagementId}/simulations/${simPending.id}/edit`);
+
+    // Banner must be visible
+    await expect(page.getByTestId('soc-blocked-banner')).toBeVisible();
+    await expect(
+      page.getByText(/simulation pas encore en revue/i),
+    ).toBeVisible();
+
+    // SOC fields are disabled
+    await expect(page.locator('#sim-log-source')).toBeDisabled();
+    await expect(page.locator('#sim-soc-comment')).toBeDisabled();
+
+    // Test with in_progress status
+    const simIP = await createSimulation(redteamToken, engagementId, 'AC-9.4 in_progress');
+    const rtClient = makeClient(redteamToken);
+    await rtClient.patch(`/simulations/${simIP.id}`, { name: 'trigger' });
+
+    await page.goto(`/engagements/${engagementId}/simulations/${simIP.id}/edit`);
+    await expect(page.getByTestId('soc-blocked-banner')).toBeVisible();
+    await expect(page.locator('#sim-log-source')).toBeDisabled();
+
+    await deleteSimulation(redteamToken, simPending.id);
+    await deleteSimulation(redteamToken, simIP.id);
+  });
+});