Fix .gitignore and add missing authentication source files

This commit fixes overly broad .gitignore patterns that were excluding
important source code files from version control. Previously, wildcard
patterns like *auth*, *token*, *secret*, *connection*, and *credential*
were excluding ALL files containing these words, including critical
application code.

Changes:
- Updated .gitignore with specific patterns for sensitive config files
  (*.json, *.txt, *.yml, *.yaml extensions only)
- Removed broad wildcards that excluded source code files

Added missing source files:
- shared/auth/ (9 files): Complete authentication system
  - JWT handler, middleware, auth service, models, routes
- reports-app/backend/app/routers/auth.py: Authentication API router
- reports-app/backend/app/auth_middleware_wrapper.py: Middleware wrapper
- reports-app/frontend/src/stores/auth.js: Vue.js auth store
- reports-app/frontend/tests/: E2E tests and fixtures for auth
- reports-app/telegram-bot/app/auth/: Telegram auth linking module
- deployment/windows/scripts/Setup-ClaudeAuth.ps1: Windows deployment script
- security/secrets_scanner.py: Security scanning utility

These files are essential for the application to function and should
have been included in the initial commit.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.gitignore

@@ -180,32 +180,45 @@
 *_rsa.pub
 *_temp_*
 *_tmp_*
-*auth*
-*cleanup*.json
-*cleanup*.json
-*connection*
-*credential*
-*dsn*
+# Sensitive configuration files (specific patterns only)
 *passwd*
-*password*
+*password*.txt
+*password*.json
+*password*.yml
+*password*.yaml
+*.env.prod
+*.env.production
+*.env.staging
 *prod.env*
 *production.env*
-*report*.json
-*report*.json
-*scan*.json
-*scan*.json
-*secret*
-*security*.json
-*security*.json
-*ssh_test*
 *staging.env*
+*credentials*.json
+*credentials*.txt
+*credentials*.yml
+*credentials*.yaml
+*secret*.txt
+*secret*.json
+*secret*.yml
+*secret*.yaml
+*secrets*.txt
+*secrets*.json
+*secrets*.yml
+*secrets*.yaml
+*token*.txt
+*token*.json
+*dsn*.txt
+*dsn*.json
+# Security scan and cleanup reports
+*cleanup*.json
+*report*.json
+*scan*.json
+*security*.json
+# Temporary test scripts (but allow proper test files)
+*ssh_test*.sh
+*tunnel_test*.sh
+temp_test.*
+quick_test.*
 *test_*.bat
-*test_*.py
-*test_*.sh
-*test_report*
-*test_results*
-*token*
-*tunnel_test*
 *~
 *~
 .DS_Store