feat: add forward authentication configuration and UI

- Introduced ForwardAuthConfig model to store global forward authentication settings.
- Updated Manager to fetch and apply forward authentication configuration.
- Added ForwardAuthHandler to create a reverse proxy handler for authentication.
- Enhanced ProxyHost model to include forward authentication options.
- Created Security page and ForwardAuthSettings component for managing authentication settings.
- Implemented API endpoints for fetching and updating forward authentication configuration.
- Added tests for new functionality including validation and error handling.
- Updated frontend components to support forward authentication settings.

frontend/src/utils/__tests__/passwordStrength.test.ts

@@ -0,0 +1,40 @@
+import { describe, it, expect } from 'vitest'
+import { calculatePasswordStrength } from '../passwordStrength'
+
+describe('calculatePasswordStrength', () => {
+  it('returns score 0 for empty password', () => {
+    const result = calculatePasswordStrength('')
+    expect(result.score).toBe(0)
+    expect(result.label).toBe('Empty')
+  })
+
+  it('returns low score for short password', () => {
+    const result = calculatePasswordStrength('short')
+    expect(result.score).toBeLessThan(2)
+  })
+
+  it('returns higher score for longer password', () => {
+    const result = calculatePasswordStrength('longerpassword')
+    expect(result.score).toBeGreaterThanOrEqual(2)
+  })
+
+  it('rewards complexity (numbers, symbols, uppercase)', () => {
+    const simple = calculatePasswordStrength('password123')
+    const complex = calculatePasswordStrength('Password123!')
+
+    expect(complex.score).toBeGreaterThan(simple.score)
+  })
+
+  it('returns max score for strong password', () => {
+    const result = calculatePasswordStrength('CorrectHorseBatteryStaple1!')
+    expect(result.score).toBe(4)
+    expect(result.label).toBe('Strong')
+  })
+
+  it('provides feedback for weak passwords', () => {
+    const result = calculatePasswordStrength('123456')
+    expect(result.feedback).toBeDefined()
+    // The feedback is an array of strings
+    expect(result.feedback.length).toBeGreaterThan(0)
+  })
+})