feat: security hardening, production roadmap, admin panel v1

Client security fixes (cmd/tailscale-tray/main.go):
- SSRF protection in Add Server dialog (validateControlURL): reject
  private/loopback/link-local/cloud-metadata IPs via DNS resolution
- RCE gate on AuthURL/BrowseToURL exec paths (validateAuthURL)
- Sanitized URL logging (sanitizeURLForLog drops query auth tokens)
- Error handling on exec.Command with user-facing showError()

Admin panel security (web-admin):
- Bcrypt password hashing (replaces SHA256)
- Rate limiting: 5 failed logins → 15-min lockout
- Session + login attempt cleanup goroutine (hourly)
- url.QueryEscape / encodeURIComponent for all API params
- Fail-hard startup when no TLS and non-loopback bind
- ADMIN_PASSWORD required (no default), password min 12 chars
- Username regex whitelist

Installer hardening (Setup.wxs):
- util:PermissionEx restricts SCM access: only Administrators +
  SYSTEM can start/stop/reconfigure service. Authenticated Users
  limited to QueryStatus/QueryConfig/Interrogate
- Vital="yes" on ServiceInstall

Docs & roadmap:
- PRODUCTION_ROADMAP.md: 5-milestone plan (security + features +
  distribution + ops) with granular tasks, effort, done-when
- CLIENT_SECURITY_AUDIT.md, SECURITY_FIXES.md, DEPLOYMENT.md
- AI assistant rules (.cursorrules, .antigravityrules, etc.)

Build & distribution:
- build-msi.ps1, deploy-and-sign.ps1, sign-release.ps1
- redeploy.ps1, tray-deploy.ps1, test-msi.ps1
- installer/msi/ alternative WXS setup
- Restored .github/workflows/ removed in mirror cleanup

.gitignore hardened: *.pfx, *.p12, *.key, *.pem, .env*

.agent/skills/api-patterns/scripts/api_validator.py

@@ -0,0 +1,211 @@
+#!/usr/bin/env python3
+"""
+API Validator - Checks API endpoints for best practices.
+Validates OpenAPI specs, response formats, and common issues.
+"""
+import sys
+import json
+import re
+from pathlib import Path
+
+# Fix Windows console encoding for Unicode output
+try:
+    sys.stdout.reconfigure(encoding='utf-8', errors='replace')
+    sys.stderr.reconfigure(encoding='utf-8', errors='replace')
+except AttributeError:
+    pass  # Python < 3.7
+
+def find_api_files(project_path: Path) -> list:
+    """Find API-related files."""
+    patterns = [
+        "**/*api*.ts", "**/*api*.js", "**/*api*.py",
+        "**/routes/*.ts", "**/routes/*.js", "**/routes/*.py",
+        "**/controllers/*.ts", "**/controllers/*.js",
+        "**/endpoints/*.ts", "**/endpoints/*.py",
+        "**/*.openapi.json", "**/*.openapi.yaml",
+        "**/swagger.json", "**/swagger.yaml",
+        "**/openapi.json", "**/openapi.yaml"
+    ]
+    
+    files = []
+    for pattern in patterns:
+        files.extend(project_path.glob(pattern))
+    
+    # Exclude node_modules, etc.
+    return [f for f in files if not any(x in str(f) for x in ['node_modules', '.git', 'dist', 'build', '__pycache__'])]
+
+def check_openapi_spec(file_path: Path) -> dict:
+    """Check OpenAPI/Swagger specification."""
+    issues = []
+    passed = []
+    
+    try:
+        content = file_path.read_text(encoding='utf-8')
+        
+        if file_path.suffix == '.json':
+            spec = json.loads(content)
+        else:
+            # Basic YAML check
+            if 'openapi:' in content or 'swagger:' in content:
+                passed.append("[OK] OpenAPI/Swagger version defined")
+            else:
+                issues.append("[X] No OpenAPI version found")
+            
+            if 'paths:' in content:
+                passed.append("[OK] Paths section exists")
+            else:
+                issues.append("[X] No paths defined")
+            
+            if 'components:' in content or 'definitions:' in content:
+                passed.append("[OK] Schema components defined")
+            
+            return {'file': str(file_path), 'passed': passed, 'issues': issues, 'type': 'openapi'}
+        
+        # JSON OpenAPI checks
+        if 'openapi' in spec or 'swagger' in spec:
+            passed.append("[OK] OpenAPI version defined")
+        
+        if 'info' in spec:
+            if 'title' in spec['info']:
+                passed.append("[OK] API title defined")
+            if 'version' in spec['info']:
+                passed.append("[OK] API version defined")
+            if 'description' not in spec['info']:
+                issues.append("[!] API description missing")
+        
+        if 'paths' in spec:
+            path_count = len(spec['paths'])
+            passed.append(f"[OK] {path_count} endpoints defined")
+            
+            # Check each path
+            for path, methods in spec['paths'].items():
+                for method, details in methods.items():
+                    if method in ['get', 'post', 'put', 'patch', 'delete']:
+                        if 'responses' not in details:
+                            issues.append(f"[X] {method.upper()} {path}: No responses defined")
+                        if 'summary' not in details and 'description' not in details:
+                            issues.append(f"[!] {method.upper()} {path}: No description")
+        
+    except Exception as e:
+        issues.append(f"[X] Parse error: {e}")
+    
+    return {'file': str(file_path), 'passed': passed, 'issues': issues, 'type': 'openapi'}
+
+def check_api_code(file_path: Path) -> dict:
+    """Check API code for common issues."""
+    issues = []
+    passed = []
+    
+    try:
+        content = file_path.read_text(encoding='utf-8')
+        
+        # Check for error handling
+        error_patterns = [
+            r'try\s*{', r'try:', r'\.catch\(',
+            r'except\s+', r'catch\s*\('
+        ]
+        has_error_handling = any(re.search(p, content) for p in error_patterns)
+        if has_error_handling:
+            passed.append("[OK] Error handling present")
+        else:
+            issues.append("[X] No error handling found")
+        
+        # Check for status codes
+        status_patterns = [
+            r'status\s*\(\s*\d{3}\s*\)', r'statusCode\s*[=:]\s*\d{3}',
+            r'HttpStatus\.', r'status_code\s*=\s*\d{3}',
+            r'\.status\(\d{3}\)', r'res\.status\('
+        ]
+        has_status = any(re.search(p, content) for p in status_patterns)
+        if has_status:
+            passed.append("[OK] HTTP status codes used")
+        else:
+            issues.append("[!] No explicit HTTP status codes")
+        
+        # Check for validation
+        validation_patterns = [
+            r'validate', r'schema', r'zod', r'joi', r'yup',
+            r'pydantic', r'@Body\(', r'@Query\('
+        ]
+        has_validation = any(re.search(p, content, re.I) for p in validation_patterns)
+        if has_validation:
+            passed.append("[OK] Input validation present")
+        else:
+            issues.append("[!] No input validation detected")
+        
+        # Check for auth middleware
+        auth_patterns = [
+            r'auth', r'jwt', r'bearer', r'token',
+            r'middleware', r'guard', r'@Authenticated'
+        ]
+        has_auth = any(re.search(p, content, re.I) for p in auth_patterns)
+        if has_auth:
+            passed.append("[OK] Authentication/authorization detected")
+        
+        # Check for rate limiting
+        rate_patterns = [r'rateLimit', r'throttle', r'rate.?limit']
+        has_rate = any(re.search(p, content, re.I) for p in rate_patterns)
+        if has_rate:
+            passed.append("[OK] Rate limiting present")
+        
+        # Check for logging
+        log_patterns = [r'console\.log', r'logger\.', r'logging\.', r'log\.']
+        has_logging = any(re.search(p, content) for p in log_patterns)
+        if has_logging:
+            passed.append("[OK] Logging present")
+        
+    except Exception as e:
+        issues.append(f"[X] Read error: {e}")
+    
+    return {'file': str(file_path), 'passed': passed, 'issues': issues, 'type': 'code'}
+
+def main():
+    target = sys.argv[1] if len(sys.argv) > 1 else "."
+    project_path = Path(target)
+    
+    print("\n" + "=" * 60)
+    print("  API VALIDATOR - Endpoint Best Practices Check")
+    print("=" * 60 + "\n")
+    
+    api_files = find_api_files(project_path)
+    
+    if not api_files:
+        print("[!] No API files found.")
+        print("   Looking for: routes/, controllers/, api/, openapi.json/yaml")
+        sys.exit(0)
+    
+    results = []
+    for file_path in api_files[:15]:  # Limit
+        if 'openapi' in file_path.name.lower() or 'swagger' in file_path.name.lower():
+            result = check_openapi_spec(file_path)
+        else:
+            result = check_api_code(file_path)
+        results.append(result)
+    
+    # Print results
+    total_issues = 0
+    total_passed = 0
+    
+    for result in results:
+        print(f"\n[FILE] {result['file']} [{result['type']}]")
+        for item in result['passed']:
+            print(f"   {item}")
+            total_passed += 1
+        for item in result['issues']:
+            print(f"   {item}")
+            if item.startswith("[X]"):
+                total_issues += 1
+    
+    print("\n" + "=" * 60)
+    print(f"[RESULTS] {total_passed} passed, {total_issues} critical issues")
+    print("=" * 60)
+    
+    if total_issues == 0:
+        print("[OK] API validation passed")
+        sys.exit(0)
+    else:
+        print("[X] Fix critical issues before deployment")
+        sys.exit(1)
+
+if __name__ == "__main__":
+    main()