diff --git a/.claude-plugin/marketplace.json b/.claude-plugin/marketplace.json
index ac545b5..8b288fc 100644
--- a/.claude-plugin/marketplace.json
+++ b/.claude-plugin/marketplace.json
@@ -4,11 +4,11 @@
     "name": "Alireza Rezvani",
     "url": "https://alirezarezvani.com"
   },
-  "description": "Production-ready skill packages for Claude AI - 53 expert skills across marketing, engineering, product, C-level advisory, project management, regulatory compliance, business growth, and finance",
+  "description": "Production-ready skill packages for Claude AI - 65 expert skills across marketing, engineering, product, C-level advisory, project management, regulatory compliance, business growth, and finance",
   "homepage": "https://github.com/alirezarezvani/claude-skills",
   "repository": "https://github.com/alirezarezvani/claude-skills",
   "metadata": {
-    "description": "53 production-ready skill packages across 8 domains: marketing, engineering, product, C-level advisory, project management, regulatory compliance, business growth, and finance",
+    "description": "65 production-ready skill packages across 8 domains: marketing, engineering, product, C-level advisory, project management, regulatory compliance, business growth, and finance",
     "version": "1.0.0"
   },
   "plugins": [
@@ -26,7 +26,7 @@
     {
       "name": "engineering-skills",
       "source": "./engineering-team",
-      "description": "18 engineering skills: architecture, frontend, backend, fullstack, QA, DevOps, security, AI/ML, data engineering",
+      "description": "30 engineering skills: architecture, frontend, backend, fullstack, QA, DevOps, security, AI/ML, data engineering",
       "version": "1.0.0",
       "author": {
         "name": "Alireza Rezvani"
diff --git a/.codex/skills-index.json b/.codex/skills-index.json
index 2a4fe99..41071e5 100644
--- a/.codex/skills-index.json
+++ b/.codex/skills-index.json
@@ -3,7 +3,7 @@
   "name": "claude-code-skills",
   "description": "Production-ready skill packages for AI agents - Marketing, Engineering, Product, C-Level, PM, and RA/QM",
   "repository": "https://github.com/alirezarezvani/claude-skills",
-  "total_skills": 59,
+  "total_skills": 65,
   "skills": [
     {
       "name": "customer-success-manager",
@@ -366,6 +366,42 @@
       ],
       "references": true,
       "assets": true
+    },
+    {
+      "name": "dependency-auditor",
+      "source": "../../engineering/dependency-auditor",
+      "category": "engineering",
+      "description": "Multi-language dependency scanning, license compliance, and upgrade planning for modern software projects"
+    },
+    {
+      "name": "release-manager",
+      "source": "../../engineering/release-manager",
+      "category": "engineering",
+      "description": "Automated changelog generation, semantic version bumping, and release readiness planning for production deployments"
+    },
+    {
+      "name": "database-designer",
+      "source": "../../engineering/database-designer",
+      "category": "engineering",
+      "description": "Schema analysis with ERD generation, index optimization, and migration generation for database architecture"
+    },
+    {
+      "name": "rag-architect",
+      "source": "../../engineering/rag-architect",
+      "category": "engineering",
+      "description": "RAG pipeline design with chunking optimization, retrieval evaluation, and architecture generation for AI systems"
+    },
+    {
+      "name": "agent-designer",
+      "source": "../../engineering/agent-designer",
+      "category": "engineering",
+      "description": "Multi-agent system architecture, tool schema generation, and agent performance evaluation for agentic AI"
+    },
+    {
+      "name": "skill-tester",
+      "source": "../../engineering/skill-tester",
+      "category": "engineering",
+      "description": "Meta-skill for automated skill validation, script testing, and quality scoring for skill development workflows"
     }
   ],
   "categories": {
@@ -380,7 +416,7 @@
       "description": "Executive leadership and advisory skills"
     },
     "engineering": {
-      "count": 19,
+      "count": 25,
       "source": "../../engineering-team",
       "description": "Software engineering and technical skills"
     },
@@ -410,5 +446,5 @@
       "description": "Regulatory affairs and quality management skills"
     }
   },
-  "total": 59
+  "total": 65
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f37a3aa..22c4b02 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - **interview-system-designer** (POWERFUL tier) — Interview loop designer, question bank generator, and hiring calibrator
 - **migration-architect** (POWERFUL tier) — Migration planner, compatibility checker, and rollback generator
 - **observability-designer** (POWERFUL tier) — SLO designer, alert optimizer, and dashboard generator
+- **dependency-auditor** (POWERFUL tier) — Multi-language dependency scanner, license compliance checker, and upgrade planner
+- **release-manager** (POWERFUL tier) — Automated changelog generator, semantic version bumper, and release readiness checker
+- **database-designer** (POWERFUL tier) — Schema analyzer with ERD generation, index optimizer, and migration generator
+- **rag-architect** (POWERFUL tier) — RAG pipeline builder, chunking optimizer, and retrieval evaluator
+- **agent-designer** (POWERFUL tier) — Multi-agent architect, tool schema generator, and agent performance evaluator
+- **skill-tester** (POWERFUL tier) — Meta-skill validator, script tester, and quality scorer
 - `campaign-analytics` - Multi-touch attribution, funnel conversion, campaign ROI (3 Python tools)
 - `customer-success-manager` - Onboarding, retention, expansion, health scoring (2 Python tools)
 - `sales-engineer` - Technical sales, solution design, RFP responses (2 Python tools)
@@ -22,7 +28,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - New `business-growth` domain with 3 skills
 - New `finance` domain with 1 skill
 - 92+ Python automation tools (up from 87+, including 17 new POWERFUL-tier tools)
-- 58 total skills across 8 domains (up from 53)
+- 64 total skills across 8 domains (up from 53)
 
 ### Fixed
 - CI workflows (smart-sync.yml, pr-issue-auto-close.yml) — PR #193
diff --git a/README.md b/README.md
index 8b5fc2b..b9b57fe 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 [![Claude AI](https://img.shields.io/badge/Claude-AI-blue.svg)](https://claude.ai)
 [![Claude Code](https://img.shields.io/badge/Claude-Code-purple.svg)](https://claude.ai/code)
 [![Multi-Agent Compatible](https://img.shields.io/badge/Multi--Agent-Compatible-green.svg)](https://github.com/skillcreatorai/Ai-Agent-Skills)
-[![59 Skills](https://img.shields.io/badge/Skills-59-brightgreen.svg)](#-available-skills)
+[![65 Skills](https://img.shields.io/badge/Skills-65-brightgreen.svg)](#-available-skills)
 [![SkillCheck Validated](https://img.shields.io/badge/SkillCheck-Validated-4c1)](https://getskillcheck.com)
 
 ---
@@ -533,7 +533,7 @@ Template and file creation/modification specialist.
 
 ### Engineering Team Skills
 
-**Complete engineering skills suite with 13 specialized roles** covering architecture, development, testing, security, operations, cloud infrastructure, and enterprise systems.
+**Complete engineering skills suite with 19 specialized roles** covering architecture, development, testing, security, operations, cloud infrastructure, and enterprise systems.
 
 #### 🏗️ Senior Software Architect
 **Status:** ✅ Production Ready | **Version:** 1.0
@@ -762,6 +762,108 @@ Comprehensive technology evaluation with TCO analysis, security assessment, and
 
 ---
 
+#### 📦 Dependency Auditor
+**Status:** ✅ Production Ready | **Version:** 1.0
+
+Multi-language dependency scanning, license compliance, and upgrade planning for modern software projects.
+
+**What's Included:**
+- **Dependency Scanner** - Multi-language dependency analysis and vulnerability detection (Python CLI)
+- **License Compliance Checker** - License compatibility and compliance validation (Python CLI)
+- **Upgrade Planner** - Strategic dependency upgrade planning with risk assessment (Python CLI)
+- **Security Vulnerability Assessment** - CVE analysis and remediation recommendations
+- **License Compatibility Matrix** - Legal compliance checking across multiple licenses
+- **Upgrade Impact Analysis** - Breaking changes and migration effort estimation
+
+**Learn More:** [engineering/dependency-auditor/SKILL.md](engineering/dependency-auditor/SKILL.md)
+
+---
+
+#### 🚀 Release Manager
+**Status:** ✅ Production Ready | **Version:** 1.0
+
+Automated changelog generation, semantic version bumping, and release readiness planning for production deployments.
+
+**What's Included:**
+- **Changelog Generator** - Automated changelog creation from commit history (Python CLI)
+- **Version Bumper** - Semantic versioning with automated version increment (Python CLI)
+- **Release Readiness Checker** - Pre-release validation and readiness assessment (Python CLI)
+- **Release Notes Automation** - Generate comprehensive release documentation
+- **Semantic Versioning Guide** - Best practices for version management
+- **Release Pipeline Integration** - CI/CD release workflow optimization
+
+**Learn More:** [engineering/release-manager/SKILL.md](engineering/release-manager/SKILL.md)
+
+---
+
+#### 🗄️ Database Designer
+**Status:** ✅ Production Ready | **Version:** 1.0
+
+Schema analysis with ERD generation, index optimization, and migration generation for database architecture.
+
+**What's Included:**
+- **Schema Analyzer** - Database schema analysis and optimization recommendations (Python CLI)
+- **ERD Generator** - Entity Relationship Diagram generation from schema (Python CLI)
+- **Index Optimizer** - Query performance optimization through strategic indexing (Python CLI)
+- **Migration Generator** - Automated database migration script creation (Python CLI)
+- **Schema Validation** - Database integrity and constraint validation
+- **Performance Tuning Guide** - Query optimization and database performance patterns
+
+**Learn More:** [engineering/database-designer/SKILL.md](engineering/database-designer/SKILL.md)
+
+---
+
+#### 🧠 RAG Architect
+**Status:** ✅ Production Ready | **Version:** 1.0
+
+RAG pipeline design with chunking optimization, retrieval evaluation, and architecture generation for AI systems.
+
+**What's Included:**
+- **RAG Pipeline Builder** - Complete RAG system architecture and implementation (Python CLI)
+- **Chunking Optimizer** - Document chunking strategy optimization for retrieval (Python CLI)
+- **Retrieval Evaluator** - RAG system performance evaluation and tuning (Python CLI)
+- **Vector Database Integration** - Multi-provider vector database setup and optimization
+- **Embedding Strategy Guide** - Embedding model selection and fine-tuning
+- **RAG Performance Patterns** - Architecture patterns for scalable RAG systems
+
+**Learn More:** [engineering/rag-architect/SKILL.md](engineering/rag-architect/SKILL.md)
+
+---
+
+#### 🤖 Agent Designer
+**Status:** ✅ Production Ready | **Version:** 1.0
+
+Multi-agent system architecture, tool schema generation, and agent performance evaluation for agentic AI.
+
+**What's Included:**
+- **Multi-Agent Architect** - Design and implement multi-agent system architecture (Python CLI)
+- **Tool Schema Generator** - Generate standardized tool schemas for agent integration (Python CLI)
+- **Agent Performance Evaluator** - Comprehensive agent performance analysis and optimization (Python CLI)
+- **Agent Communication Patterns** - Inter-agent communication and coordination strategies
+- **Tool Integration Framework** - Standardized tool integration patterns for agents
+- **Agent Orchestration Guide** - Best practices for agent system orchestration
+
+**Learn More:** [engineering/agent-designer/SKILL.md](engineering/agent-designer/SKILL.md)
+
+---
+
+#### 🧪 Skill Tester
+**Status:** ✅ Production Ready | **Version:** 1.0
+
+Meta-skill for automated skill validation, script testing, and quality scoring for skill development workflows.
+
+**What's Included:**
+- **Skill Validator** - Automated skill functionality validation and testing (Python CLI)
+- **Script Tester** - Comprehensive testing framework for skill scripts (Python CLI)
+- **Quality Scorer** - Skill quality assessment and scoring system (Python CLI)
+- **Skill CI/CD Integration** - Automated testing in skill development workflows
+- **Quality Metrics Framework** - Standardized quality assessment criteria
+- **Skill Performance Benchmarking** - Performance testing and optimization guidance
+
+**Learn More:** [engineering/skill-tester/SKILL.md](engineering/skill-tester/SKILL.md)
+
+---
+
 ### AI/ML/Data Team Skills
 
 **5 specialized AI/ML and data engineering skills** for building modern data-driven and AI-powered products.
diff --git a/engineering-team/.claude-plugin/plugin.json b/engineering-team/.claude-plugin/plugin.json
index d58396f..9a59298 100644
--- a/engineering-team/.claude-plugin/plugin.json
+++ b/engineering-team/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "engineering-skills",
-  "description": "18 production-ready engineering skills covering architecture, frontend, backend, fullstack, QA, DevOps, security, AI/ML, and data engineering",
+  "description": "30 production-ready engineering skills covering architecture, frontend, backend, fullstack, QA, DevOps, security, AI/ML, and data engineering",
   "version": "1.0.0",
   "author": {
     "name": "Alireza Rezvani",