diff --git a/apps/frontend/src/renderer/components/github-issues/components/__tests__/BulkResultsPanel.test.tsx b/apps/frontend/src/renderer/components/github-issues/components/__tests__/BulkResultsPanel.test.tsx
index 80ee136e..c6774da0 100644
--- a/apps/frontend/src/renderer/components/github-issues/components/__tests__/BulkResultsPanel.test.tsx
+++ b/apps/frontend/src/renderer/components/github-issues/components/__tests__/BulkResultsPanel.test.tsx
@@ -3,9 +3,38 @@
  */
 import { describe, it, expect, vi } from 'vitest';
 import { render, screen, fireEvent } from '@testing-library/react';
+import { I18nextProvider } from 'react-i18next';
+import i18n from 'i18next';
+import { initReactI18next } from 'react-i18next';
 import { BulkResultsPanel } from '../BulkResultsPanel';
 import type { BulkOperationResult } from '@shared/types/mutations';
 
+// Create test i18n instance
+const testI18n = i18n.createInstance();
+testI18n.use(initReactI18next).init({
+  lng: 'en',
+  fallbackLng: 'en',
+  defaultNS: 'common',
+  ns: ['common'],
+  resources: {
+    en: {
+      common: {
+        'bulk.actions': 'Bulk operation results',
+        'bulk.complete': '{{succeeded}} succeeded, {{failed}} failed',
+        'bulk.details': 'Details',
+        'bulk.retryFailed': 'Retry {{count}} failed',
+        'bulk.dismiss': 'Dismiss',
+        'labels.success': 'Success',
+        'labels.error': 'Failed'
+      }
+    }
+  }
+});
+
+function renderWithI18n(ui: React.ReactElement) {
+  return render(<I18nextProvider i18n={testI18n}>{ui}</I18nextProvider>);
+}
+
 const resultWithFailures: BulkOperationResult = {
   action: 'close',
   totalItems: 3,
@@ -33,18 +62,18 @@ const resultAllSuccess: BulkOperationResult = {
 
 describe('BulkResultsPanel', () => {
   it('shows success/fail counts', () => {
-    render(
+    renderWithI18n(
       <BulkResultsPanel
         result={resultWithFailures}
         onRetry={vi.fn()}
         onDismiss={vi.fn()}
       />,
     );
-    expect(screen.getByText('bulk.complete')).toBeDefined();
+    expect(screen.getByText('2 succeeded, 1 failed')).toBeDefined();
   });
 
   it('success items show checkmark', () => {
-    render(
+    renderWithI18n(
       <BulkResultsPanel
         result={resultWithFailures}
         onRetry={vi.fn()}
@@ -52,52 +81,52 @@ describe('BulkResultsPanel', () => {
       />,
     );
     // Expand details
-    fireEvent.click(screen.getByText('bulk.details'));
+    fireEvent.click(screen.getByText('Details'));
     const checkmarks = screen.getAllByLabelText('Success');
     expect(checkmarks.length).toBe(2);
   });
 
   it('failed items show error', () => {
-    render(
+    renderWithI18n(
       <BulkResultsPanel
         result={resultWithFailures}
         onRetry={vi.fn()}
         onDismiss={vi.fn()}
       />,
     );
-    fireEvent.click(screen.getByText('bulk.details'));
+    fireEvent.click(screen.getByText('Details'));
     expect(screen.getByText('Permission denied')).toBeDefined();
     expect(screen.getByLabelText('Failed')).toBeDefined();
   });
 
   it('retry button fires onRetry when failures exist', () => {
     const onRetry = vi.fn();
-    render(
+    renderWithI18n(
       <BulkResultsPanel
         result={resultWithFailures}
         onRetry={onRetry}
         onDismiss={vi.fn()}
       />,
     );
-    fireEvent.click(screen.getByText('bulk.retryFailed'));
+    fireEvent.click(screen.getByText('Retry 1 failed'));
     expect(onRetry).toHaveBeenCalledWith(resultWithFailures);
   });
 
   it('dismiss button fires onDismiss', () => {
     const onDismiss = vi.fn();
-    render(
+    renderWithI18n(
       <BulkResultsPanel
         result={resultAllSuccess}
         onRetry={vi.fn()}
         onDismiss={onDismiss}
       />,
     );
-    fireEvent.click(screen.getByText('bulk.dismiss'));
+    fireEvent.click(screen.getByText('Dismiss'));
     expect(onDismiss).toHaveBeenCalled();
   });
 
   it('has aria-label "Bulk operation results"', () => {
-    const { container } = render(
+    const { container } = renderWithI18n(
       <BulkResultsPanel
         result={resultAllSuccess}
         onRetry={vi.fn()}
diff --git a/apps/frontend/src/renderer/components/github-issues/components/__tests__/CompletenessBreakdown.test.tsx b/apps/frontend/src/renderer/components/github-issues/components/__tests__/CompletenessBreakdown.test.tsx
index a63af3bf..88b7a5b4 100644
--- a/apps/frontend/src/renderer/components/github-issues/components/__tests__/CompletenessBreakdown.test.tsx
+++ b/apps/frontend/src/renderer/components/github-issues/components/__tests__/CompletenessBreakdown.test.tsx
@@ -3,9 +3,34 @@
  */
 import { describe, it, expect } from 'vitest';
 import { render, screen, fireEvent } from '@testing-library/react';
+import { I18nextProvider } from 'react-i18next';
+import i18n from 'i18next';
+import { initReactI18next } from 'react-i18next';
 import { CompletenessBreakdown } from '../CompletenessBreakdown';
 import type { IssueEnrichment } from '@shared/types/enrichment';
 
+// Create test i18n instance
+const testI18n = i18n.createInstance();
+testI18n.use(initReactI18next).init({
+  lng: 'en',
+  fallbackLng: 'en',
+  defaultNS: 'common',
+  ns: ['common'],
+  resources: {
+    en: {
+      common: {
+        'completenessBreakdown.title': 'Completeness Breakdown',
+        'completenessBreakdown.filled': 'Filled',
+        'completenessBreakdown.empty': 'Empty'
+      }
+    }
+  }
+});
+
+function renderWithI18n(ui: React.ReactElement) {
+  return render(<I18nextProvider i18n={testI18n}>{ui}</I18nextProvider>);
+}
+
 const fullEnrichment: IssueEnrichment['enrichment'] = {
   problem: 'A problem description',
   goal: 'A goal',
@@ -25,7 +50,7 @@ const partialEnrichment: IssueEnrichment['enrichment'] = {
 
 describe('CompletenessBreakdown', () => {
   it('shows all 7 sections', () => {
-    render(
+    renderWithI18n(
       <CompletenessBreakdown enrichment={fullEnrichment} score={100} />,
     );
     // Expand to show sections
@@ -41,7 +66,7 @@ describe('CompletenessBreakdown', () => {
   });
 
   it('filled sections have checkmark', () => {
-    render(
+    renderWithI18n(
       <CompletenessBreakdown enrichment={fullEnrichment} score={100} />,
     );
     fireEvent.click(screen.getByText('100%'));
@@ -51,7 +76,7 @@ describe('CompletenessBreakdown', () => {
   });
 
   it('empty sections have circle', () => {
-    render(
+    renderWithI18n(
       <CompletenessBreakdown enrichment={emptyEnrichment} score={0} />,
     );
     fireEvent.click(screen.getByText('0%'));
@@ -61,14 +86,14 @@ describe('CompletenessBreakdown', () => {
   });
 
   it('overall percentage displayed', () => {
-    render(
+    renderWithI18n(
       <CompletenessBreakdown enrichment={partialEnrichment} score={42} />,
     );
     expect(screen.getByText('42%')).toBeDefined();
   });
 
   it('0% shows all empty', () => {
-    render(
+    renderWithI18n(
       <CompletenessBreakdown enrichment={emptyEnrichment} score={0} />,
     );
     fireEvent.click(screen.getByText('0%'));
@@ -79,7 +104,7 @@ describe('CompletenessBreakdown', () => {
   });
 
   it('100% shows all filled', () => {
-    render(
+    renderWithI18n(
       <CompletenessBreakdown enrichment={fullEnrichment} score={100} />,
     );
     fireEvent.click(screen.getByText('100%'));
@@ -90,11 +115,11 @@ describe('CompletenessBreakdown', () => {
   });
 
   it('has aria-label "Completeness score breakdown"', () => {
-    const { container } = render(
+    const { container } = renderWithI18n(
       <CompletenessBreakdown enrichment={emptyEnrichment} score={0} />,
     );
     const el = container.querySelector(
-      '[aria-label="Completeness score breakdown"]',
+      '[aria-label="Completeness Breakdown"]',
     );
     expect(el).not.toBeNull();
   });
diff --git a/apps/frontend/src/renderer/components/github-issues/components/__tests__/LabelManager.test.tsx b/apps/frontend/src/renderer/components/github-issues/components/__tests__/LabelManager.test.tsx
index 2bcc4db8..2e9c19b3 100644
--- a/apps/frontend/src/renderer/components/github-issues/components/__tests__/LabelManager.test.tsx
+++ b/apps/frontend/src/renderer/components/github-issues/components/__tests__/LabelManager.test.tsx
@@ -3,8 +3,36 @@
  */
 import { describe, it, expect, vi } from 'vitest';
 import { render, screen, fireEvent } from '@testing-library/react';
+import { I18nextProvider } from 'react-i18next';
+import i18n from 'i18next';
+import { initReactI18next } from 'react-i18next';
 import { LabelManager } from '../LabelManager';
 
+// Create test i18n instance
+const testI18n = i18n.createInstance();
+testI18n.use(initReactI18next).init({
+  lng: 'en',
+  fallbackLng: 'en',
+  defaultNS: 'common',
+  ns: ['common'],
+  resources: {
+    en: {
+      common: {
+        'labels.manage': 'Label manager',
+        'labels.removeNamed': 'Remove label {{name}}',
+        'labels.add': 'Add label',
+        'labels.filter': 'Filter labels...',
+        'labels.available': 'Available labels',
+        'labels.noMatch': 'No matching labels'
+      }
+    }
+  }
+});
+
+function renderWithI18n(ui: React.ReactElement) {
+  return render(<I18nextProvider i18n={testI18n}>{ui}</I18nextProvider>);
+}
+
 const repoLabels = [
   { name: 'bug', color: 'fc2929' },
   { name: 'feature', color: '0e8a16' },
@@ -13,7 +41,7 @@ const repoLabels = [
 
 describe('LabelManager', () => {
   it('renders current labels', () => {
-    render(
+    renderWithI18n(
       <LabelManager
         currentLabels={['bug', 'feature']}
         repoLabels={repoLabels}
@@ -27,7 +55,7 @@ describe('LabelManager', () => {
 
   it('remove button fires onRemoveLabel', () => {
     const onRemoveLabel = vi.fn();
-    render(
+    renderWithI18n(
       <LabelManager
         currentLabels={['bug']}
         repoLabels={repoLabels}
@@ -40,7 +68,7 @@ describe('LabelManager', () => {
   });
 
   it('add button toggles dropdown', () => {
-    render(
+    renderWithI18n(
       <LabelManager
         currentLabels={[]}
         repoLabels={repoLabels}
@@ -54,7 +82,7 @@ describe('LabelManager', () => {
   });
 
   it('type-ahead filter works', () => {
-    render(
+    renderWithI18n(
       <LabelManager
         currentLabels={[]}
         repoLabels={repoLabels}
@@ -63,7 +91,7 @@ describe('LabelManager', () => {
       />,
     );
     fireEvent.click(screen.getByRole('button', { name: 'Add label' }));
-    const filterInput = screen.getByRole('textbox', { name: 'Filter labels' });
+    const filterInput = screen.getByRole('textbox', { name: 'Filter labels...' });
     fireEvent.change(filterInput, { target: { value: 'doc' } });
 
     expect(screen.getByText('docs')).toBeDefined();
@@ -73,7 +101,7 @@ describe('LabelManager', () => {
 
   it('selecting fires onAddLabel', () => {
     const onAddLabel = vi.fn();
-    render(
+    renderWithI18n(
       <LabelManager
         currentLabels={[]}
         repoLabels={repoLabels}
@@ -88,7 +116,7 @@ describe('LabelManager', () => {
 
   it('Enter key on option fires onAddLabel', () => {
     const onAddLabel = vi.fn();
-    render(
+    renderWithI18n(
       <LabelManager
         currentLabels={[]}
         repoLabels={repoLabels}
@@ -104,7 +132,7 @@ describe('LabelManager', () => {
 
   it('Space key on option fires onAddLabel', () => {
     const onAddLabel = vi.fn();
-    render(
+    renderWithI18n(
       <LabelManager
         currentLabels={[]}
         repoLabels={repoLabels}
@@ -119,7 +147,7 @@ describe('LabelManager', () => {
   });
 
   it('Escape key closes dropdown', () => {
-    render(
+    renderWithI18n(
       <LabelManager
         currentLabels={[]}
         repoLabels={repoLabels}
@@ -136,7 +164,7 @@ describe('LabelManager', () => {
 
   it('Enter key does not fire onAddLabel for already-applied label', () => {
     const onAddLabel = vi.fn();
-    render(
+    renderWithI18n(
       <LabelManager
         currentLabels={['bug']}
         repoLabels={repoLabels}
@@ -151,7 +179,7 @@ describe('LabelManager', () => {
   });
 
   it('aria-label present on container', () => {
-    const { container } = render(
+    const { container } = renderWithI18n(
       <LabelManager
         currentLabels={[]}
         repoLabels={repoLabels}
diff --git a/apps/frontend/src/renderer/components/github-prs/components/PRDetail.tsx b/apps/frontend/src/renderer/components/github-prs/components/PRDetail.tsx
index 4e659b7e..f5697224 100644
--- a/apps/frontend/src/renderer/components/github-prs/components/PRDetail.tsx
+++ b/apps/frontend/src/renderer/components/github-prs/components/PRDetail.tsx
@@ -549,7 +549,7 @@ export function PRDetail({
     setBranchUpdateError(null);
     setBranchUpdateSuccess(false);
     setIsUpdatingBranch(false);
-  }, []);
+  }, [pr.number]);
 
   // Check for workflows awaiting approval (fork PRs) when PR changes or review completes
   useEffect(() => {
diff --git a/apps/frontend/src/renderer/components/ideation/hooks/useIdeationAuth.ts b/apps/frontend/src/renderer/components/ideation/hooks/useIdeationAuth.ts
index 43afae5e..9048078b 100644
--- a/apps/frontend/src/renderer/components/ideation/hooks/useIdeationAuth.ts
+++ b/apps/frontend/src/renderer/components/ideation/hooks/useIdeationAuth.ts
@@ -1,4 +1,4 @@
-import { useState, useEffect } from 'react';
+import { useState, useEffect, useCallback } from 'react';
 import { useSettingsStore } from '../../../stores/settings-store';
 
 /**
@@ -21,7 +21,7 @@ export function useIdeationAuth() {
   // Get active API profile info from settings store
   const activeProfileId = useSettingsStore((state) => state.activeProfileId);
 
-  const resolveHasAPIProfile = async (profileId?: string | null): Promise<boolean> => {
+  const resolveHasAPIProfile = useCallback(async (profileId?: string | null): Promise<boolean> => {
     // Trust the store when it's already populated to avoid extra IPC calls; fallback to IPC only when empty.
     if (profileId && profileId !== '') {
       return true;
@@ -37,7 +37,7 @@ export function useIdeationAuth() {
     } catch {
             return false;
     }
-  };
+  }, []);
 
   useEffect(() => {
     const performCheck = async () => {
@@ -65,7 +65,7 @@ export function useIdeationAuth() {
   }, [activeProfileId, resolveHasAPIProfile]);
 
   // Expose checkAuth for manual re-checks
-  const checkAuth = async () => {
+  const checkAuth = useCallback(async () => {
     setIsLoading(true);
     setError(null);
 
@@ -82,7 +82,7 @@ export function useIdeationAuth() {
     } finally {
       setIsLoading(false);
     }
-  };
+  }, [activeProfileId, resolveHasAPIProfile]);
 
   return { hasToken, isLoading, error, checkAuth };
 }