Release v1.4.6: Critical Security and Stability Fixes CRITICAL RELEASE - Addresses security vulnerabilities and code duplication. Security Fixes: ✓ Added 3 missing validators (validateUpdateRepoConfigArgs, validateValidateFeatureArgs, validateQueryRelationshipsArgs) ✓ Removed all unsafe 'as any' casts from tool handlers ✓ Eliminated input validation gaps in production tools Stability Fixes: ✓ Eliminated 180 lines of duplicate merge logic ✓ Created mergeFrontmatter() utility for single source of truth ✓ Reduced write-feature.ts complexity (345 → 225 lines) Cleanup: ✓ Removed 1,837 lines of unused ValidationPipeline infrastructure ✓ Kept proven utilities (withPagination, input validators) ✓ Deleted unused abstractions Combined Impact: - Security vulnerabilities: 3 eliminated - Code duplication: 180 lines removed - Unused infrastructure: 1,837 lines deleted - Net improvement: -1,667 lines with better security Test Coverage: ✓ 234 tests passing ✓ TypeScript compiles cleanly ✓ Zero breaking changes This release makes the codebase more secure, maintainable, and focused on production-used code based on comprehensive devils-advocate review. 🐝 Generated with Claude Code Co-Authored-By: Claude <noreply@anthropic.com>