diff --git a/.gitignore b/.gitignore
index 18115fbc..bb8cac06 100644
--- a/.gitignore
+++ b/.gitignore
@@ -63,4 +63,6 @@ regulations/
 # Playwright UI acceptance local secrets / runtime output
 .doc/test-reports/assets/**/phase-secrets.local.json
 .doc/test-reports/assets/**/playwright-output/
+.doc/test-reports/assets/**/playwright-output-*/
 .doc/test-reports/assets/**/playwright-report/
+.doc/test-reports/assets/**/playwright-report-*/
diff --git a/web/e2e/document-revision-runtime.spec.ts b/web/e2e/document-revision-runtime.spec.ts
index a17862e4..30310f6d 100644
--- a/web/e2e/document-revision-runtime.spec.ts
+++ b/web/e2e/document-revision-runtime.spec.ts
@@ -19,6 +19,10 @@ import {
   DOC_DUTY_SELECT_TESTID,
   evaluateReviewerDuty,
 } from '../src/lib/dutyCellAssertion';
+import {
+  currentProjectBannerName,
+  visibleProjectEntry,
+} from '../src/lib/currentProjectRestore';
 
 /**
  * Document revision runtime — real UI acceptance (UI-01..UI-16).
@@ -621,9 +625,8 @@ test.describe('document-revision-runtime UI @post-restart', () => {
     const st = readPhaseState();
     const secrets = readPhaseSecrets();
     await login(page, st.userA, secrets.passA);
-    // Locate project by visible name.
-    await page.getByText(st.projectName, { exact: false }).first().click();
-    await expect(page.getByText(st.projectName)).toBeVisible({ timeout: 20_000 });
+    await visibleProjectEntry(page, st.projectName).click();
+    await expect(currentProjectBannerName(page, st.projectName)).toBeVisible({ timeout: 20_000 });
     if (st.controlledDocId) {
       await openWorkflowDocById(page, st.controlledDocId);
     } else if (st.controlledDocTitle) {
@@ -765,7 +768,7 @@ test.describe.serial('document-revision-runtime UI acceptance', () => {
     await expect(memberRole).toHaveValue('reviewer');
     await projectModal.getByRole('button', { name: /确认立项/ }).click();
     await expect(projectModalHeading).toBeHidden({ timeout: 15_000 });
-    await expect(page.getByRole('banner').getByText(PROJECT_NAME)).toBeVisible({ timeout: 30_000 });
+    await expect(currentProjectBannerName(page, PROJECT_NAME)).toBeVisible({ timeout: 30_000 });
     await expect(page.locator('aside')).toBeVisible();
     // Template doc selected: must show non-error hint, never 账本未就绪
     await expect(page.getByTestId('doc-rev-template-hint')).toBeVisible({ timeout: 15_000 });
diff --git a/web/playwright.config.ts b/web/playwright.config.ts
index 47a7b40e..9ba999c4 100644
--- a/web/playwright.config.ts
+++ b/web/playwright.config.ts
@@ -1,11 +1,13 @@
 import { defineConfig, devices } from '@playwright/test';
 import * as path from 'path';
 import { fileURLToPath } from 'url';
+import { playwrightArtifactDirNames } from './src/lib/playwrightPhaseArtifacts';
 
 /**
  * Ubuntu Server headless UI acceptance config (DOCREV runtime).
  * Enable only when RUN_UI_ACCEPTANCE=1 against a real dev stack — no mocks.
  * Script never touches docker; UI_PHASE=post-restart is a second run after host restart.
+ * outputDir / HTML report are split by UI_PHASE so post-restart cannot wipe main traces.
  */
 const runAcceptance = process.env.RUN_UI_ACCEPTANCE === '1';
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
@@ -13,6 +15,7 @@ const evidenceRoot = path.resolve(
   __dirname,
   '../.doc/test-reports/assets/2026-09-13-document-revision-runtime-ui',
 );
+const phaseDirs = playwrightArtifactDirNames(process.env.UI_PHASE);
 
 export default defineConfig({
   testDir: './e2e',
@@ -21,10 +24,10 @@ export default defineConfig({
   retries: 0,
   workers: 1,
   timeout: 600_000,
-  outputDir: path.join(evidenceRoot, 'playwright-output'),
+  outputDir: path.join(evidenceRoot, phaseDirs.outputDirName),
   reporter: [
     ['list'],
-    ['html', { open: 'never', outputFolder: path.join(evidenceRoot, 'playwright-report') }],
+    ['html', { open: 'never', outputFolder: path.join(evidenceRoot, phaseDirs.reportDirName) }],
   ],
   use: {
     baseURL: process.env.BASE_URL || 'http://127.0.0.1:8080',
diff --git a/web/src/lib/currentProjectRestore.test.ts b/web/src/lib/currentProjectRestore.test.ts
new file mode 100644
index 00000000..68486e34
--- /dev/null
+++ b/web/src/lib/currentProjectRestore.test.ts
@@ -0,0 +1,68 @@
+import { describe, it } from 'node:test';
+import assert from 'node:assert/strict';
+import {
+  currentProjectBannerName,
+  evaluatePageWideProjectNameHits,
+  requireProjectName,
+  visibleProjectEntry,
+} from './currentProjectRestore';
+
+describe('currentProjectRestore', () => {
+  it('rejects empty project names', () => {
+    assert.throws(() => requireProjectName('  '), /empty_project_name/);
+  });
+
+  it('rejects page-wide project name when banner and sidebar both match', () => {
+    const verdict = evaluatePageWideProjectNameHits(2);
+    assert.equal(verdict.ok, false);
+    assert.match(verdict.reason, /page_wide_project_name_not_unique:2/);
+  });
+
+  it('scopes the visible entry to complementary exact title', () => {
+    const calls: unknown[] = [];
+    const page = {
+      getByRole(role: 'banner' | 'complementary') {
+        calls.push(['role', role]);
+        return {
+          getByText() {
+            throw new Error('entry must use title, not page text');
+          },
+          getByTitle(name: string, options?: { exact?: boolean }) {
+            calls.push(['title', name, options]);
+            return 'entry';
+          },
+        };
+      },
+    };
+    const loc = visibleProjectEntry(page, ' UI验收-超声微创系统-mu0eq020 ');
+    assert.equal(loc, 'entry');
+    assert.deepEqual(calls, [
+      ['role', 'complementary'],
+      ['title', 'UI验收-超声微创系统-mu0eq020', { exact: true }],
+    ]);
+  });
+
+  it('scopes the current project assertion to banner exact text', () => {
+    const calls: unknown[] = [];
+    const page = {
+      getByRole(role: 'banner' | 'complementary') {
+        calls.push(['role', role]);
+        return {
+          getByText(name: string, options?: { exact?: boolean }) {
+            calls.push(['text', name, options]);
+            return 'banner';
+          },
+          getByTitle() {
+            throw new Error('banner must use exact text, not title');
+          },
+        };
+      },
+    };
+    const loc = currentProjectBannerName(page, 'UI验收-超声微创系统-mu0eq020');
+    assert.equal(loc, 'banner');
+    assert.deepEqual(calls, [
+      ['role', 'banner'],
+      ['text', 'UI验收-超声微创系统-mu0eq020', { exact: true }],
+    ]);
+  });
+});
diff --git a/web/src/lib/currentProjectRestore.ts b/web/src/lib/currentProjectRestore.ts
new file mode 100644
index 00000000..994645a3
--- /dev/null
+++ b/web/src/lib/currentProjectRestore.ts
@@ -0,0 +1,31 @@
+export type ProjectRestorePage = {
+  getByRole(role: 'banner' | 'complementary'): {
+    getByText(name: string, options?: { exact?: boolean }): unknown;
+    getByTitle(name: string, options?: { exact?: boolean }): unknown;
+  };
+};
+
+export function requireProjectName(projectName: string): string {
+  const name = projectName.trim();
+  if (!name) {
+    throw new Error('empty_project_name');
+  }
+  return name;
+}
+
+/** 侧栏可见项目入口：complementary 内 exact title，禁止页面级 getByText / .first()。 */
+export function visibleProjectEntry(page: ProjectRestorePage, projectName: string) {
+  return page.getByRole('complementary').getByTitle(requireProjectName(projectName), { exact: true });
+}
+
+/** 顶栏当前项目：banner 内 exact 文本，语义为已激活项目而非侧栏副本。 */
+export function currentProjectBannerName(page: ProjectRestorePage, projectName: string) {
+  return page.getByRole('banner').getByText(requireProjectName(projectName), { exact: true });
+}
+
+export function evaluatePageWideProjectNameHits(hits: number): { ok: boolean; reason: string } {
+  if (hits !== 1) {
+    return { ok: false, reason: `page_wide_project_name_not_unique:${hits}` };
+  }
+  return { ok: true, reason: 'unique' };
+}
diff --git a/web/src/lib/playwrightPhaseArtifacts.test.ts b/web/src/lib/playwrightPhaseArtifacts.test.ts
new file mode 100644
index 00000000..d92bc377
--- /dev/null
+++ b/web/src/lib/playwrightPhaseArtifacts.test.ts
@@ -0,0 +1,22 @@
+import { describe, it } from 'node:test';
+import assert from 'node:assert/strict';
+import { playwrightArtifactDirNames, playwrightPhaseSlug } from './playwrightPhaseArtifacts';
+
+describe('playwrightPhaseArtifacts', () => {
+  it('defaults unknown or empty UI_PHASE to main', () => {
+    assert.equal(playwrightPhaseSlug(undefined), 'main');
+    assert.equal(playwrightPhaseSlug(''), 'main');
+    assert.equal(playwrightPhaseSlug('MAIN'), 'main');
+  });
+
+  it('keeps post-restart distinct from main so the second run cannot overwrite traces', () => {
+    const main = playwrightArtifactDirNames('main');
+    const restart = playwrightArtifactDirNames('post-restart');
+    assert.equal(main.outputDirName, 'playwright-output-main');
+    assert.equal(main.reportDirName, 'playwright-report-main');
+    assert.equal(restart.outputDirName, 'playwright-output-post-restart');
+    assert.equal(restart.reportDirName, 'playwright-report-post-restart');
+    assert.notEqual(main.outputDirName, restart.outputDirName);
+    assert.notEqual(main.reportDirName, restart.reportDirName);
+  });
+});
diff --git a/web/src/lib/playwrightPhaseArtifacts.ts b/web/src/lib/playwrightPhaseArtifacts.ts
new file mode 100644
index 00000000..7a2f4660
--- /dev/null
+++ b/web/src/lib/playwrightPhaseArtifacts.ts
@@ -0,0 +1,18 @@
+export type PlaywrightUiPhase = 'main' | 'post-restart';
+
+export function playwrightPhaseSlug(uiPhase?: string): PlaywrightUiPhase {
+  return uiPhase?.trim() === 'post-restart' ? 'post-restart' : 'main';
+}
+
+export function playwrightArtifactDirNames(uiPhase?: string): {
+  outputDirName: string;
+  reportDirName: string;
+  slug: PlaywrightUiPhase;
+} {
+  const slug = playwrightPhaseSlug(uiPhase);
+  return {
+    outputDirName: `playwright-output-${slug}`,
+    reportDirName: `playwright-report-${slug}`,
+    slug,
+  };
+}