diff --git a/backend/package.json b/backend/package.json
index accf690..957c4fa 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -8,10 +8,10 @@
     "typecheck": "tsc -p tsconfig.json --noEmit",
     "build": "tsc -p tsconfig.json && node scripts/copy-runtime-assets.ts",
     "test": "node --test tests/*.test.ts",
-    "test:integration": "node --test tests/integration/*.test.ts",
+    "test:integration": "node --test --test-concurrency=1 tests/integration/*.test.ts",
     "test:e2e": "node --test tests/e2e/*.test.ts",
     "test:all": "npm run test && npm run test:integration && npm run test:e2e",
-    "verify": "npm run typecheck && npm run lint && npm run check:esm-boundaries && npm run test",
+    "verify": "npm run typecheck && npm run lint && npm run check:esm-boundaries && npm run test:all",
     "check:esm-boundaries": "node scripts/check-esm-boundaries.ts",
     "check:public-access": "node scripts/check-public-access-hardening.ts",
     "fix:public-access": "node scripts/check-public-access-hardening.ts --fix",
diff --git a/backend/src/services/publish.ts b/backend/src/services/publish.ts
index 3b3e297..adb31c2 100644
--- a/backend/src/services/publish.ts
+++ b/backend/src/services/publish.ts
@@ -301,52 +301,45 @@ export default class PublishService {
     currentUser: PublishServiceCurrentUser | undefined,
     transaction: Transaction,
   ): Promise<PublishSummary> {
-    const [
-      sourcePages,
-      sourceAudioTracks,
-      sourceTransitionSettings,
-      sourceUiControlSettings,
-    ] = await Promise.all([
-      db.tour_pages.findAll({
+    const sourcePages = await db.tour_pages.findAll({
+      where: { projectId, environment: fromEnv },
+      transaction,
+    });
+    const sourceAudioTracks = await db.project_audio_tracks.findAll({
+      where: { projectId, environment: fromEnv },
+      transaction,
+    });
+    const sourceTransitionSettings =
+      await db.project_transition_settings.findOne({
         where: { projectId, environment: fromEnv },
         transaction,
-      }),
-      db.project_audio_tracks.findAll({
+      });
+    const sourceUiControlSettings =
+      await db.project_ui_control_settings.findOne({
         where: { projectId, environment: fromEnv },
         transaction,
-      }),
-      db.project_transition_settings.findOne({
-        where: { projectId, environment: fromEnv },
-        transaction,
-      }),
-      db.project_ui_control_settings.findOne({
-        where: { projectId, environment: fromEnv },
-        transaction,
-      }),
-    ]);
+      });
 
-    await Promise.all([
-      db.tour_pages.destroy({
-        where: { projectId, environment: toEnv },
-        transaction,
-        force: true,
-      }),
-      db.project_audio_tracks.destroy({
-        where: { projectId, environment: toEnv },
-        transaction,
-        force: true,
-      }),
-      db.project_transition_settings.destroy({
-        where: { projectId, environment: toEnv },
-        transaction,
-        force: true,
-      }),
-      db.project_ui_control_settings.destroy({
-        where: { projectId, environment: toEnv },
-        transaction,
-        force: true,
-      }),
-    ]);
+    await db.tour_pages.destroy({
+      where: { projectId, environment: toEnv },
+      transaction,
+      force: true,
+    });
+    await db.project_audio_tracks.destroy({
+      where: { projectId, environment: toEnv },
+      transaction,
+      force: true,
+    });
+    await db.project_transition_settings.destroy({
+      where: { projectId, environment: toEnv },
+      transaction,
+      force: true,
+    });
+    await db.project_ui_control_settings.destroy({
+      where: { projectId, environment: toEnv },
+      transaction,
+      force: true,
+    });
 
     const actorId = currentUser?.id || null;
 
diff --git a/backend/tests/check-permissions.test.ts b/backend/tests/check-permissions.test.ts
index 5ea07f5..89168c9 100644
--- a/backend/tests/check-permissions.test.ts
+++ b/backend/tests/check-permissions.test.ts
@@ -1,9 +1,15 @@
 import assert from 'node:assert/strict';
 import test from 'node:test';
+import { createRequest, createResponse } from 'node-mocks-http';
 
 import {
+  checkCrudPermissions,
   getCrudPermissionName,
 } from '../src/middlewares/check-permissions.ts';
+import {
+  setCurrentUser,
+  setRuntimePublicRequest,
+} from '../src/utils/request-context.ts';
 
 void test('getCrudPermissionName honors explicit permission override', () => {
   assert.equal(
@@ -22,3 +28,44 @@ void test('getCrudPermissionName keeps default method-derived permission without
     'DELETE_PAGE_ELEMENTS',
   );
 });
+
+void test('checkCrudPermissions allows users to read their own user route without broad READ_USERS permission', async () => {
+  const req = createRequest({
+    method: 'GET',
+    url: '/user-1',
+    params: { id: 'user-1' },
+  });
+  const res = createResponse();
+  setCurrentUser(req, {
+    id: 'user-1',
+    app_role: {
+      name: 'Public',
+      permissions: [],
+    },
+  });
+
+  const error = await new Promise<Error | null>((resolve) => {
+    checkCrudPermissions('users')(req, res, (nextError?: unknown) => {
+      resolve(nextError instanceof Error ? nextError : null);
+    });
+  });
+
+  assert.equal(error, null);
+});
+
+void test('checkCrudPermissions allows runtime public reads for presentation entities', async () => {
+  const req = createRequest({
+    method: 'GET',
+    url: '/',
+  });
+  const res = createResponse();
+  setRuntimePublicRequest(req, true);
+
+  const error = await new Promise<Error | null>((resolve) => {
+    checkCrudPermissions('tour_pages')(req, res, (nextError?: unknown) => {
+      resolve(nextError instanceof Error ? nextError : null);
+    });
+  });
+
+  assert.equal(error, null);
+});
diff --git a/backend/tests/file-service.test.ts b/backend/tests/file-service.test.ts
new file mode 100644
index 0000000..8a7b40e
--- /dev/null
+++ b/backend/tests/file-service.test.ts
@@ -0,0 +1,57 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+
+import {
+  createErrorResponse,
+  generatePresignedUrls,
+  isValidPath,
+} from '../src/services/file.ts';
+
+void test('isValidPath allows relative storage keys and rejects traversal or protocol inputs', () => {
+  assert.equal(isValidPath('projects/demo/image.jpg'), true);
+  assert.equal(isValidPath('nested/folder/video.mp4'), true);
+
+  assert.equal(isValidPath('../secret.txt'), false);
+  assert.equal(isValidPath('folder/../../secret.txt'), false);
+  assert.equal(isValidPath('https://example.test/file.jpg'), false);
+  assert.equal(isValidPath('s3://bucket/file.jpg'), false);
+  assert.equal(isValidPath('folder//file.jpg'), false);
+  assert.equal(isValidPath('folder/\0/file.jpg'), false);
+  assert.equal(isValidPath('   '), false);
+  assert.equal(isValidPath(null), false);
+});
+
+void test('createErrorResponse returns a stable structured error payload', () => {
+  assert.deepEqual(
+    createErrorResponse('Invalid file paths detected', 'INVALID_PATH', {
+      invalidPaths: ['../secret.txt'],
+    }),
+    {
+      message: 'Invalid file paths detected',
+      code: 'INVALID_PATH',
+      details: {
+        invalidPaths: ['../secret.txt'],
+      },
+    },
+  );
+});
+
+void test('generatePresignedUrls returns backend download URLs for local storage provider', async () => {
+  const previousProvider = process.env.FILE_STORAGE_PROVIDER;
+  process.env.FILE_STORAGE_PROVIDER = 'local';
+  try {
+    assert.deepEqual(
+      await generatePresignedUrls(['projects/demo/image 1.jpg']),
+      {
+        'projects/demo/image 1.jpg':
+          '/api/file/download?privateUrl=projects%2Fdemo%2Fimage%201.jpg',
+      },
+    );
+  } finally {
+    if (previousProvider === undefined) {
+      delete process.env.FILE_STORAGE_PROVIDER;
+    } else {
+      process.env.FILE_STORAGE_PROVIDER = previousProvider;
+    }
+  }
+});
diff --git a/backend/tests/integration/auth-service.test.ts b/backend/tests/integration/auth-service.test.ts
new file mode 100644
index 0000000..4acb932
--- /dev/null
+++ b/backend/tests/integration/auth-service.test.ts
@@ -0,0 +1,184 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import type { TestContext } from 'node:test';
+import bcrypt from 'bcrypt';
+import type { Transaction } from 'sequelize';
+
+import config from '../../src/config.ts';
+import db from '../../src/db/models/index.ts';
+import UsersDBApi from '../../src/db/api/users.ts';
+import AuthService from '../../src/services/auth.ts';
+import type { UserRecord } from '../../src/types/index.ts';
+
+const suffix = `${Date.now()}-${process.pid}`;
+
+void test.after(async () => {
+  await db.sequelize.close();
+});
+
+async function authenticateWithTimeout(timeoutMs = 1500): Promise<void> {
+  let timeoutId: NodeJS.Timeout | undefined;
+  const timeout = new Promise<never>((_, reject) => {
+    timeoutId = setTimeout(
+      () => reject(new Error(`Database unavailable after ${timeoutMs}ms`)),
+      timeoutMs,
+    );
+  });
+
+  try {
+    await Promise.race([db.sequelize.authenticate(), timeout]);
+  } finally {
+    if (timeoutId !== undefined) {
+      clearTimeout(timeoutId);
+    }
+  }
+}
+
+async function withTransaction(
+  t: TestContext,
+  callback: (transaction: Transaction) => Promise<void>,
+): Promise<void> {
+  try {
+    await authenticateWithTimeout();
+  } catch (error) {
+    const message = error instanceof Error ? error.message : 'unknown error';
+    t.skip(`Database unavailable: ${message}`);
+    return;
+  }
+
+  const transaction = await db.sequelize.transaction();
+  try {
+    await callback(transaction);
+  } finally {
+    await transaction.rollback();
+  }
+}
+
+async function createAuthUser(
+  email: string,
+  password: string,
+  transaction: Transaction,
+): Promise<UserRecord> {
+  const hashedPassword = await bcrypt.hash(password, config.bcrypt.saltRounds);
+
+  return db.users.create(
+    {
+      email,
+      password: hashedPassword,
+      emailVerified: false,
+      disabled: false,
+      provider: config.providers.LOCAL,
+      createdById: null,
+      updatedById: null,
+    },
+    { transaction },
+  );
+}
+
+async function getUserPassword(
+  id: string,
+  transaction: Transaction,
+): Promise<string> {
+  const user = await db.users.findByPk(id, { transaction });
+
+  if (!user?.password) {
+    throw new Error('Expected user password to exist.');
+  }
+
+  return user.password;
+}
+
+function requireEmail(user: UserRecord): string {
+  if (!user.email) {
+    throw new Error('Expected user email to exist.');
+  }
+
+  return user.email;
+}
+
+void test('passwordReset updates password for a valid reset token', async (t) => {
+  await withTransaction(t, async (transaction) => {
+    const user = await createAuthUser(
+      `reset-${suffix}@example.test`,
+      'old-password',
+      transaction,
+    );
+    const token = await UsersDBApi.generatePasswordResetToken(requireEmail(user), {
+      transaction,
+    });
+
+    await AuthService.passwordReset(token, 'new-password', { transaction });
+
+    const updatedPassword = await getUserPassword(user.id, transaction);
+    assert.equal(await bcrypt.compare('new-password', updatedPassword), true);
+    assert.equal(await bcrypt.compare('old-password', updatedPassword), false);
+  });
+});
+
+void test('passwordReset rejects invalid reset tokens', async (t) => {
+  await withTransaction(t, async (transaction) => {
+    await assert.rejects(
+      () =>
+        AuthService.passwordReset('invalid-token', 'new-password', {
+          transaction,
+        }),
+      /Password reset link is invalid or has expired/,
+    );
+  });
+});
+
+void test('passwordUpdate requires current password and rejects password reuse', async (t) => {
+  await withTransaction(t, async (transaction) => {
+    const user = await createAuthUser(
+      `update-${suffix}@example.test`,
+      'current-password',
+      transaction,
+    );
+    const currentPassword = await getUserPassword(user.id, transaction);
+
+    await assert.rejects(
+      () =>
+        AuthService.passwordUpdate('wrong-password', 'next-password', {
+          currentUser: {
+            id: user.id,
+            password: currentPassword,
+          },
+          transaction,
+        }),
+      /credentials/,
+    );
+
+    await assert.rejects(
+      () =>
+        AuthService.passwordUpdate('current-password', 'current-password', {
+          currentUser: {
+            id: user.id,
+            password: currentPassword,
+          },
+          transaction,
+        }),
+      /same password/i,
+    );
+  });
+});
+
+void test('verifyEmail marks users as verified for a valid email token', async (t) => {
+  await withTransaction(t, async (transaction) => {
+    const user = await createAuthUser(
+      `verify-${suffix}@example.test`,
+      'password',
+      transaction,
+    );
+    const token = await UsersDBApi.generateEmailVerificationToken(requireEmail(user), {
+      transaction,
+    });
+
+    assert.equal(
+      await AuthService.verifyEmail(token, { transaction }),
+      true,
+    );
+
+    const reloaded = await db.users.findByPk(user.id, { transaction });
+    assert.equal(reloaded?.emailVerified, true);
+  });
+});
diff --git a/backend/tests/integration/publish-service.test.ts b/backend/tests/integration/publish-service.test.ts
new file mode 100644
index 0000000..9b593f2
--- /dev/null
+++ b/backend/tests/integration/publish-service.test.ts
@@ -0,0 +1,456 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import type { TestContext } from 'node:test';
+import type { Transaction } from 'sequelize';
+
+import db from '../../src/db/models/index.ts';
+import PublishService from '../../src/services/publish.ts';
+import type {
+  ProjectCreatePayload,
+  ProjectModelRecord,
+  ProjectTransitionSettingsFieldMapping,
+  ProjectUiControlSettingsFieldMapping,
+  PublishCloneData,
+  PublishClonePayload,
+  PublishCloneSource,
+  RuntimeEnvironment,
+  TourPageCreatePayload,
+} from '../../src/types/index.ts';
+
+const suffix = `${Date.now()}-${process.pid}`;
+const actorId = '094121b9-c567-469a-b256-ba221b7fd5d6';
+
+void test.after(async () => {
+  await db.sequelize.close();
+});
+
+async function authenticateWithTimeout(timeoutMs = 1500): Promise<void> {
+  let timeoutId: NodeJS.Timeout | undefined;
+  const timeout = new Promise<never>((_, reject) => {
+    timeoutId = setTimeout(
+      () => reject(new Error(`Database unavailable after ${timeoutMs}ms`)),
+      timeoutMs,
+    );
+  });
+
+  try {
+    await Promise.race([db.sequelize.authenticate(), timeout]);
+  } finally {
+    if (timeoutId !== undefined) {
+      clearTimeout(timeoutId);
+    }
+  }
+}
+
+async function withTransaction(
+  t: TestContext,
+  callback: (transaction: Transaction) => Promise<void>,
+): Promise<void> {
+  try {
+    await authenticateWithTimeout();
+  } catch (error) {
+    const message = error instanceof Error ? error.message : 'unknown error';
+    t.skip(`Database unavailable: ${message}`);
+    return;
+  }
+
+  const transaction = await db.sequelize.transaction();
+  try {
+    await callback(transaction);
+  } finally {
+    await transaction.rollback();
+  }
+}
+
+async function createProject(
+  slug: string,
+  transaction: Transaction,
+): Promise<ProjectModelRecord> {
+  const data: ProjectCreatePayload = {
+    id: undefined,
+    name: `Publish Test ${slug}`,
+    slug,
+    description: undefined,
+    logo_url: undefined,
+    favicon_url: undefined,
+    og_image_url: undefined,
+    design_width: undefined,
+    design_height: undefined,
+    production_presentation_visibility: 'public',
+    importHash: null,
+    createdById: null,
+    updatedById: null,
+  };
+
+  return db.projects.create(data, { transaction });
+}
+
+interface TourPageSeed {
+  projectId: string;
+  environment: RuntimeEnvironment;
+  name: string;
+  slug: string;
+  sortOrder: number;
+}
+
+function createTourPage(
+  data: TourPageSeed,
+  transaction: Transaction,
+) {
+  const payload: TourPageCreatePayload = {
+    id: undefined,
+    projectId: data.projectId,
+    environment: data.environment,
+    source_key: null,
+    name: data.name,
+    slug: data.slug,
+    sort_order: data.sortOrder,
+    background_image_url: `${data.environment}/${data.slug}.jpg`,
+    background_video_url: null,
+    background_embed_url: null,
+    background_audio_url: null,
+    background_audio_autoplay: true,
+    background_audio_loop: true,
+    background_audio_start_time: null,
+    background_audio_end_time: null,
+    background_loop: false,
+    background_video_autoplay: true,
+    background_video_loop: true,
+    background_video_muted: true,
+    background_video_start_time: null,
+    background_video_end_time: null,
+    design_width: null,
+    design_height: null,
+    requires_auth: false,
+    ui_schema_json: {
+      elements: [{ id: `${data.slug}-button`, type: 'button' }],
+    },
+    global_ui_controls_settings_json: {
+      sound: { enabled: true },
+    },
+    importHash: null,
+    createdById: null,
+    updatedById: null,
+  };
+
+  return db.tour_pages.create(
+    payload,
+    { transaction },
+  );
+}
+
+async function countPages(
+  projectId: string,
+  environment: RuntimeEnvironment,
+  transaction: Transaction,
+): Promise<number> {
+  const result = await db.tour_pages.findAndCountAll({
+    where: { projectId, environment },
+    include: [],
+    distinct: true,
+    order: [['createdAt', 'ASC']],
+    transaction,
+  });
+
+  return result.count;
+}
+
+function createDevAudioTrack(
+  data: {
+    projectId: string;
+    name: string;
+    slug: string;
+    url: string;
+    loop: boolean;
+    volume: number;
+    sort_order: number;
+    is_enabled: boolean;
+  },
+  transaction: Transaction,
+): Promise<PublishCloneSource> {
+  return db.project_audio_tracks.create(
+    {
+      ...data,
+      environment: 'dev',
+      createdById: actorId,
+      updatedById: actorId,
+    },
+    { transaction },
+  );
+}
+
+interface TargetAudioTrackSeed {
+  projectId: string;
+  environment: 'stage' | 'production';
+  name: string;
+  slug: string;
+  url: string;
+}
+
+function createTargetAudioTrack(
+  data: TargetAudioTrackSeed,
+  transaction: Transaction,
+): Promise<void> {
+  const payload: PublishClonePayload = {
+    ...data,
+    source_key: 'old-source',
+    createdById: null,
+    updatedById: null,
+  };
+
+  return db.project_audio_tracks.bulkCreate(
+    [payload],
+    { transaction, returning: false },
+  );
+}
+
+function createTransitionSettings(
+  projectId: string,
+  environment: RuntimeEnvironment,
+  data: Omit<ProjectTransitionSettingsFieldMapping, 'id' | 'source_key'>,
+  transaction: Transaction,
+) {
+  return db.project_transition_settings.create(
+    {
+      id: undefined,
+      source_key: null,
+      ...data,
+      projectId,
+      environment,
+      createdById: null,
+      updatedById: null,
+    },
+    { transaction },
+  );
+}
+
+function createUiControlSettings(
+  projectId: string,
+  environment: RuntimeEnvironment,
+  data: Omit<ProjectUiControlSettingsFieldMapping, 'id' | 'source_key'>,
+  transaction: Transaction,
+) {
+  return db.project_ui_control_settings.create(
+    {
+      id: undefined,
+      source_key: null,
+      ...data,
+      projectId,
+      environment,
+      createdById: null,
+      updatedById: null,
+    },
+    { transaction },
+  );
+}
+
+function cloneData(record: PublishCloneSource | null): PublishCloneData {
+  if (!record) {
+    throw new Error('Expected clone record to exist.');
+  }
+
+  return record.toJSON();
+}
+
+void test('copyDevToStage replaces stage content with dev pages, audio, and settings', async (t) => {
+  await withTransaction(t, async (transaction) => {
+    const project = await createProject(
+      `publish-copy-dev-stage-${suffix}`,
+      transaction,
+    );
+    const sourcePage = await createTourPage(
+      {
+        projectId: project.id,
+        environment: 'dev',
+        name: 'Dev Lobby',
+        slug: 'lobby',
+        sortOrder: 1,
+      },
+      transaction,
+    );
+    await createTourPage(
+      {
+        projectId: project.id,
+        environment: 'stage',
+        name: 'Old Stage Lobby',
+        slug: 'old-lobby',
+        sortOrder: 99,
+      },
+      transaction,
+    );
+    const sourceAudio = await createDevAudioTrack(
+      {
+        projectId: project.id,
+        name: 'Narration',
+        slug: 'narration',
+        url: 'audio/narration.mp3',
+        loop: true,
+        volume: 0.7,
+        sort_order: 1,
+        is_enabled: true,
+      },
+      transaction,
+    );
+    await createTargetAudioTrack(
+      {
+        projectId: project.id,
+        environment: 'stage',
+        name: 'Old Stage Audio',
+        slug: 'old-stage-audio',
+        url: 'audio/old.mp3',
+      },
+      transaction,
+    );
+    const sourceTransition = await createTransitionSettings(
+      project.id,
+      'dev',
+      {
+        transition_type: 'fade',
+        duration_ms: 450,
+        easing: 'linear',
+        overlay_color: '#111111',
+      },
+      transaction,
+    );
+    const sourceTransitionPlain = sourceTransition.get({ plain: true });
+    const sourceUiControls = await createUiControlSettings(
+      project.id,
+      'dev',
+      {
+        settings_json: {
+          fullscreen: { enabled: false },
+          sound: { enabled: true },
+        },
+      },
+      transaction,
+    );
+    const sourceUiControlsPlain = sourceUiControls.get({ plain: true });
+    await createUiControlSettings(
+      project.id,
+      'stage',
+      {
+        settings_json: { old: true },
+      },
+      transaction,
+    );
+
+    const summary = await PublishService.copyDevToStage(
+      project.id,
+      { id: actorId },
+      transaction,
+    );
+
+    assert.deepEqual(summary, {
+      pages_copied: 1,
+      audios_copied: 1,
+      transition_settings_copied: 1,
+      ui_control_settings_copied: 1,
+    });
+    assert.equal(await countPages(project.id, 'dev', transaction), 1);
+    assert.equal(await countPages(project.id, 'stage', transaction), 1);
+
+    const copiedPage = await db.tour_pages.findOne({
+      where: {
+        projectId: project.id,
+        environment: 'stage',
+        slug: 'lobby',
+      },
+      transaction,
+    });
+    assert.ok(copiedPage);
+    assert.notEqual(copiedPage.id, sourcePage.id);
+    assert.equal(copiedPage.source_key, sourcePage.id);
+    assert.deepEqual(copiedPage.ui_schema_json, {
+      elements: [{ id: 'lobby-button', type: 'button' }],
+    });
+
+    const stageAudios = await db.project_audio_tracks.findAll({
+      where: { projectId: project.id, environment: 'stage' },
+      transaction,
+    });
+    const copiedAudio = stageAudios.map((row) => row.toJSON()).find(
+      (row) => row.slug === 'narration',
+    );
+    assert.ok(copiedAudio);
+    assert.equal(copiedAudio.source_key, sourceAudio.id);
+    assert.equal(copiedAudio.url, 'audio/narration.mp3');
+
+    const copiedTransition = cloneData(
+      await db.project_transition_settings.findOne({
+        where: { projectId: project.id, environment: 'stage' },
+        transaction,
+      }),
+    );
+    assert.equal(copiedTransition.source_key, sourceTransitionPlain.id);
+    assert.equal(copiedTransition.duration_ms, 450);
+
+    const copiedUiControls = cloneData(
+      await db.project_ui_control_settings.findOne({
+        where: { projectId: project.id, environment: 'stage' },
+        transaction,
+      }),
+    );
+    assert.equal(copiedUiControls.source_key, sourceUiControlsPlain.id);
+    assert.deepEqual(copiedUiControls.settings_json, {
+      fullscreen: { enabled: false },
+      sound: { enabled: true },
+    });
+  });
+});
+
+void test('copyStageToProduction leaves stage content intact while replacing production', async (t) => {
+  await withTransaction(t, async (transaction) => {
+    const project = await createProject(
+      `publish-copy-stage-production-${suffix}`,
+      transaction,
+    );
+    const sourcePage = await createTourPage(
+      {
+        projectId: project.id,
+        environment: 'stage',
+        name: 'Stage Intro',
+        slug: 'intro',
+        sortOrder: 1,
+      },
+      transaction,
+    );
+    await createTourPage(
+      {
+        projectId: project.id,
+        environment: 'production',
+        name: 'Old Production Intro',
+        slug: 'old-intro',
+        sortOrder: 1,
+      },
+      transaction,
+    );
+
+    const summary = await PublishService.copyStageToProduction(
+      project.id,
+      undefined,
+      transaction,
+    );
+
+    assert.deepEqual(summary, {
+      pages_copied: 1,
+      audios_copied: 0,
+      transition_settings_copied: 0,
+      ui_control_settings_copied: 0,
+    });
+    assert.equal(await countPages(project.id, 'stage', transaction), 1);
+    assert.equal(await countPages(project.id, 'production', transaction), 1);
+
+    const productionPage = await db.tour_pages.findOne({
+      where: {
+        projectId: project.id,
+        environment: 'production',
+        slug: 'intro',
+      },
+      transaction,
+    });
+
+    assert.ok(productionPage);
+    assert.notEqual(productionPage.id, sourcePage.id);
+    assert.equal(productionPage.source_key, sourcePage.id);
+  });
+});
diff --git a/backend/tests/request-validation.test.ts b/backend/tests/request-validation.test.ts
index 65d039c..0b3e95d 100644
--- a/backend/tests/request-validation.test.ts
+++ b/backend/tests/request-validation.test.ts
@@ -8,6 +8,8 @@ import { commonErrorHandler } from '../src/helpers.ts';
 import { validateRequest } from '../src/middlewares/validate-request.ts';
 import {
   crud,
+  file,
+  publish,
   projects,
   tourPages,
   users,
@@ -37,6 +39,14 @@ function runMiddleware(
   });
 }
 
+function getBodyRecord(req: Request): Record<string, unknown> {
+  const body: unknown = req.body;
+  if (body !== null && typeof body === 'object' && !Array.isArray(body)) {
+    return Object.fromEntries(Object.entries(body));
+  }
+  throw new TypeError('Expected request body to be an object.');
+}
+
 void test('validateRequest applies converted sanitized values to request parts', async () => {
   const req = createRequest({
     query: {
@@ -145,3 +155,102 @@ void test('validateRequest rejects invalid schema maps during route setup', () =
     /Unsupported request validation part/,
   );
 });
+
+void test('publish schemas reject malformed project ids before service calls', async () => {
+  const publishError = await runMiddleware(
+    validateRequest(publish.publish),
+    createRequest({
+      body: {
+        projectId: 'not-a-uuid',
+        title: 'Production',
+      },
+    }),
+  );
+  const saveToStageError = await runMiddleware(
+    validateRequest(publish.saveToStage),
+    createRequest({
+      body: {
+        projectId: 'not-a-uuid',
+      },
+    }),
+  );
+
+  assert.equal(publishError?.isRequestValidation, true);
+  assert.equal(saveToStageError?.isRequestValidation, true);
+});
+
+void test('file presign schema enforces non-empty capped URL batches', async () => {
+  const emptyError = await runMiddleware(
+    validateRequest(file.presign),
+    createRequest({ body: { urls: [] } }),
+  );
+  const tooManyError = await runMiddleware(
+    validateRequest(file.presign),
+    createRequest({
+      body: {
+        urls: Array.from({ length: 51 }, (_value, index) => `asset-${index}.jpg`),
+      },
+    }),
+  );
+
+  assert.equal(emptyError?.isRequestValidation, true);
+  assert.equal(tooManyError?.isRequestValidation, true);
+});
+
+void test('file upload schemas validate path params and convert chunk index', async () => {
+  const uploadError = await runMiddleware(
+    validateRequest(file.upload),
+    createRequest({
+      params: {
+        table: '../assets',
+        field: 'image',
+      },
+    }),
+  );
+  const chunkReq = createRequest({
+    params: {
+      sessionId: '094121b9-c567-469a-b256-ba221b7fd5d6',
+      chunkIndex: '7',
+    },
+  });
+  const chunkError = await runMiddleware(validateRequest(file.chunk), chunkReq);
+
+  assert.equal(uploadError?.isRequestValidation, true);
+  assert.equal(chunkError, null);
+  assert.equal(chunkReq.params.chunkIndex, 7);
+});
+
+void test('tour page reorder schema defaults dev environment and requires ordered ids', async () => {
+  const validReq = createRequest({
+    body: {
+      data: {
+        projectId: '094121b9-c567-469a-b256-ba221b7fd5d6',
+        orderedPageIds: ['6a373ead-7ff4-4f1c-9a69-29ff1e97420d'],
+      },
+    },
+  });
+  const validError = await runMiddleware(validateRequest(tourPages.reorder), validReq);
+  const missingOrderError = await runMiddleware(
+    validateRequest(tourPages.reorder),
+    createRequest({
+      body: {
+        data: {
+          projectId: '094121b9-c567-469a-b256-ba221b7fd5d6',
+        },
+      },
+    }),
+  );
+
+  assert.equal(validError, null);
+  const validatedData = getBodyRecord(validReq).data;
+  assert.equal(
+    validatedData !== null &&
+      typeof validatedData === 'object' &&
+      !Array.isArray(validatedData) &&
+      'environment' in validatedData
+      ? validatedData.environment
+      : undefined,
+    'dev',
+  );
+  assert.equal(missingOrderError?.isRequestValidation, true);
+});
diff --git a/backend/tests/runtime-public.test.ts b/backend/tests/runtime-public.test.ts
new file mode 100644
index 0000000..f7f6fbd
--- /dev/null
+++ b/backend/tests/runtime-public.test.ts
@@ -0,0 +1,164 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import type { NextFunction, Request, RequestHandler } from 'express';
+import { createRequest, createResponse } from 'node-mocks-http';
+
+import {
+  blockNonPublicRuntimeListEndpoints,
+  sanitizePublicRuntimeListResponse,
+} from '../src/middlewares/runtime-public.ts';
+import { setRuntimePublicRequest } from '../src/utils/request-context.ts';
+
+function runMiddleware(
+  middleware: RequestHandler,
+  req: Request,
+): Promise<boolean> {
+  const res = createResponse();
+
+  return new Promise((resolve, reject) => {
+    const next: NextFunction = (error?: unknown) => {
+      if (error) {
+        reject(
+          error instanceof Error
+            ? error
+            : new Error('Middleware returned a non-Error callback value.'),
+        );
+        return;
+      }
+      resolve(true);
+    };
+
+    middleware(req, res, next);
+
+    if (res._isEndCalled()) {
+      resolve(false);
+    }
+  });
+}
+
+void test('blockNonPublicRuntimeListEndpoints blocks public runtime CSV exports', () => {
+  const req = createRequest({
+    method: 'GET',
+    url: '/?filetype=csv',
+    query: { filetype: 'csv' },
+  });
+  setRuntimePublicRequest(req, true);
+  const res = createResponse();
+  let nextCalled = false;
+
+  blockNonPublicRuntimeListEndpoints('projects')(req, res, () => {
+    nextCalled = true;
+  });
+
+  assert.equal(nextCalled, false);
+  assert.equal(res.statusCode, 404);
+  assert.deepEqual(res._getData(), { message: 'Not found' });
+});
+
+void test('blockNonPublicRuntimeListEndpoints blocks non-allowed public runtime paths', () => {
+  const req = createRequest({
+    method: 'GET',
+    url: '/autocomplete',
+  });
+  setRuntimePublicRequest(req, true);
+  const res = createResponse();
+  let nextCalled = false;
+
+  blockNonPublicRuntimeListEndpoints('projects')(req, res, () => {
+    nextCalled = true;
+  });
+
+  assert.equal(nextCalled, false);
+  assert.equal(res.statusCode, 404);
+});
+
+void test('blockNonPublicRuntimeListEndpoints allows configured runtime project settings path', async () => {
+  const req = createRequest({
+    method: 'GET',
+    url: '/project/094121b9-c567-469a-b256-ba221b7fd5d6/env/production',
+  });
+  setRuntimePublicRequest(req, true);
+
+  assert.equal(
+    await runMiddleware(
+      blockNonPublicRuntimeListEndpoints('project_transition_settings'),
+      req,
+    ),
+    true,
+  );
+});
+
+void test('sanitizePublicRuntimeListResponse strips non-public fields from rows and records', () => {
+  const listReq = createRequest({
+    method: 'GET',
+    url: '/',
+  });
+  setRuntimePublicRequest(listReq, true);
+  const listRes = createResponse();
+
+  sanitizePublicRuntimeListResponse('projects')(listReq, listRes, () => {});
+  listRes.send({
+    rows: [
+      {
+        id: 'project-1',
+        name: 'Lobby',
+        slug: 'lobby',
+        secret: 'do-not-leak',
+      },
+    ],
+    count: 1,
+  });
+
+  assert.deepEqual(listRes._getData(), {
+    rows: [
+      {
+        id: 'project-1',
+        name: 'Lobby',
+        slug: 'lobby',
+      },
+    ],
+    count: 1,
+  });
+
+  const recordReq = createRequest({
+    method: 'GET',
+    url: '/',
+  });
+  setRuntimePublicRequest(recordReq, true);
+  const recordRes = createResponse();
+
+  sanitizePublicRuntimeListResponse('tour_pages')(recordReq, recordRes, () => {});
+  recordRes.send({
+    id: 'page-1',
+    slug: 'intro',
+    ui_schema_json: { elements: [] },
+    internal_note: 'do-not-leak',
+  });
+
+  assert.deepEqual(recordRes._getData(), {
+    id: 'page-1',
+    slug: 'intro',
+    ui_schema_json: { elements: [] },
+  });
+});
+
+void test('sanitizePublicRuntimeListResponse does not affect authenticated admin requests', () => {
+  const req = createRequest({
+    method: 'GET',
+    url: '/',
+  });
+  const res = createResponse();
+
+  sanitizePublicRuntimeListResponse('projects')(req, res, () => {});
+  res.send({
+    id: 'project-1',
+    slug: 'lobby',
+    secret: 'visible-to-admin-path',
+  });
+
+  assert.deepEqual(res._getData(), {
+    id: 'project-1',
+    slug: 'lobby',
+    secret: 'visible-to-admin-path',
+  });
+});