feat: add curated cross-references to 7 hub skills (closes #68)

Add 22 back-references across devops-engineer, fullstack-guardian,
test-master, database-optimizer, security-reviewer, architecture-designer,
and kubernetes-specialist. Each back-reference was evaluated for genuine
agent routing value — framework/language skills that merely consume hub
capabilities were excluded (15% acceptance rate from 145 candidates).

Bump skill versions 1.1.0 → 1.1.1.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Jeffallan

skills/architecture-designer/SKILL.md

@@ -4,13 +4,13 @@ description: Use when designing new high-level system architecture, reviewing ex
 license: MIT
 metadata:
   author: https://github.com/Jeffallan
-  version: "1.1.0"
+  version: "1.1.1"
   domain: api-architecture
   triggers: architecture, system design, design pattern, microservices, scalability, ADR, technical design, infrastructure
   role: expert
   scope: design
   output-format: document
-  related-skills: fullstack-guardian, devops-engineer, secure-code-guardian
+  related-skills: fullstack-guardian, devops-engineer, secure-code-guardian, microservices-architect, code-reviewer
 ---
 
 # Architecture Designer

skills/database-optimizer/SKILL.md

@@ -4,13 +4,13 @@ description: Optimizes database queries and improves performance across PostgreS
 license: MIT
 metadata:
   author: https://github.com/Jeffallan
-  version: "1.1.0"
+  version: "1.1.1"
   domain: infrastructure
   triggers: database optimization, slow query, query performance, database tuning, index optimization, execution plan, EXPLAIN ANALYZE, database performance, PostgreSQL optimization, MySQL optimization
   role: specialist
   scope: optimization
   output-format: analysis-and-code
-  related-skills: devops-engineer
+  related-skills: devops-engineer, postgres-pro, graphql-architect
 ---
 
 # Database Optimizer

skills/devops-engineer/SKILL.md

@@ -4,13 +4,13 @@ description: Creates Dockerfiles, configures CI/CD pipelines, writes Kubernetes
 license: MIT
 metadata:
   author: https://github.com/Jeffallan
-  version: "1.1.0"
+  version: "1.1.1"
   domain: devops
   triggers: DevOps, CI/CD, deployment, Docker, Kubernetes, Terraform, GitHub Actions, infrastructure, platform engineering, incident response, on-call, self-service
   role: engineer
   scope: implementation
   output-format: code
-  related-skills: 
+  related-skills: terraform-engineer, kubernetes-specialist, sre-engineer, monitoring-expert, security-reviewer
 ---
 
 # DevOps Engineer

skills/fullstack-guardian/SKILL.md

@@ -4,13 +4,13 @@ description: Builds security-focused full-stack web applications by implementing
 license: MIT
 metadata:
   author: https://github.com/Jeffallan
-  version: "1.1.0"
+  version: "1.1.1"
   domain: security
   triggers: fullstack, implement feature, build feature, create API, frontend and backend, full stack, new feature, implement, microservices, websocket, real-time, deployment pipeline, monorepo, architecture decision, technology selection, end-to-end
   role: expert
   scope: implementation
   output-format: code
-  related-skills: feature-forge, test-master, devops-engineer
+  related-skills: feature-forge, test-master, devops-engineer, secure-code-guardian, architecture-designer, react-expert, typescript-pro
 ---
 
 # Fullstack Guardian

skills/kubernetes-specialist/SKILL.md

@@ -4,13 +4,13 @@ description: Use when deploying or managing Kubernetes workloads. Invoke to crea
 license: MIT
 metadata:
   author: https://github.com/Jeffallan
-  version: "1.1.0"
+  version: "1.1.1"
   domain: infrastructure
   triggers: Kubernetes, K8s, kubectl, Helm, container orchestration, pod deployment, RBAC, NetworkPolicy, Ingress, StatefulSet, Operator, CRD, CustomResourceDefinition, ArgoCD, Flux, GitOps, Istio, Linkerd, service mesh, multi-cluster, cost optimization, VPA, spot instances
   role: specialist
   scope: infrastructure
   output-format: manifests
-  related-skills: devops-engineer, cloud-architect, sre-engineer
+  related-skills: devops-engineer, cloud-architect, sre-engineer, terraform-engineer, security-reviewer, chaos-engineer
 ---
 
 # Kubernetes Specialist

skills/security-reviewer/SKILL.md

@@ -5,13 +5,13 @@ license: MIT
 allowed-tools: Read, Grep, Glob, Bash
 metadata:
   author: https://github.com/Jeffallan
-  version: "1.1.0"
+  version: "1.1.1"
   domain: security
   triggers: security review, vulnerability scan, SAST, security audit, penetration test, code audit, security analysis, infrastructure security, DevSecOps, cloud security, compliance audit
   role: specialist
   scope: review
   output-format: report
-  related-skills: secure-code-guardian, code-reviewer, devops-engineer, cloud-architect, kubernetes-specialist
+  related-skills: secure-code-guardian, code-reviewer, devops-engineer, cloud-architect, kubernetes-specialist, api-designer, mcp-developer
 ---
 
 # Security Reviewer

skills/test-master/SKILL.md

@@ -4,13 +4,13 @@ description: Generates test files, creates mocking strategies, analyzes code cov
 license: MIT
 metadata:
   author: https://github.com/Jeffallan
-  version: "1.1.0"
+  version: "1.1.1"
   domain: quality
   triggers: test, testing, QA, unit test, integration test, E2E, coverage, performance test, security test, regression, test strategy, test automation, test framework, quality metrics, defect, exploratory, usability, accessibility, localization, manual testing, shift-left, quality gate, flaky test, test maintenance
   role: specialist
   scope: testing
   output-format: report
-  related-skills: fullstack-guardian, playwright-expert, devops-engineer
+  related-skills: fullstack-guardian, playwright-expert, devops-engineer, debugging-wizard, code-reviewer, feature-forge
 ---
 
 # Test Master