Refactor useAuth hook, settings components, and docs for formatting and readability improvements

- Consolidated multi-line arguments into single lines where appropriate in `useAuth`.
- Improved spacing and readability in data processing across components (`ProfileSettingsForm`, `PasswordChangeForm`, `SessionCard`).
- Applied consistent table and markdown formatting in design system docs (e.g., `README.md`, `08-ai-guidelines.md`, `00-quick-start.md`).
- Updated code snippets to ensure adherence to Prettier rules and streamlined JSX structures.

frontend/e2e/README.md

@@ -63,6 +63,7 @@ npm run test:e2e -- --debug
 **Test Results:** 34/43 passing (79% pass rate)
 
 ### Passing Tests ✅
+
 - All AuthGuard tests (8/8)
 - Most Login tests (6/8)
 - Most Registration tests (7/11)
@@ -83,6 +84,7 @@ The 9 failing tests are due to minor validation message text mismatches between
 ### Recommendations
 
 These failures can be fixed by:
+
 1. Inspecting the actual error messages rendered by forms
 2. Updating test assertions to match exact wording
 3. Adding more specific selectors to avoid strict mode violations
@@ -98,6 +100,7 @@ The core functionality is working - the failures are only assertion mismatches,
 ## Configuration
 
 See `playwright.config.ts` for:
+
 - Browser targets (Chromium, Firefox, WebKit)
 - Base URL configuration
 - Screenshot and video settings