feat(011): add AWS EKS deployment specification and remove PowerShell scripts

Add comprehensive AWS EKS cloud deployment migration specification
following spec-kit-plus workflow. This establishes the foundation for
migrating from local Minikube to production AWS EKS with PostgreSQL
RDS and container registry.

Changes:
- Add complete feature specification in specs/011-aws-eks-deployment/
  including plan, tasks, data model, contracts, and quickstart guide
- Document three PHR records tracking specification workflow
- Update constitution.md to reflect active AWS EKS deployment phase
- Update CLAUDE.md with AWS EKS deployment guidance and tech stack
- Remove 5 PowerShell scripts for cross-platform Bash compatibility

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

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: DanielHashmi

.specify/memory/constitution.md

@@ -198,8 +198,8 @@ When using Claude Code or AI assistants:
   - **docker-specialist**: Dockerfiles, multi-stage builds, image optimization
 
 ### Rule G8: Platform Compatibility
-- Development environment: Windows with PowerShell
-- All shell commands MUST be PowerShell-compatible
+- Development environment: Windows with Bash
+- All shell commands MUST be Bash-compatible
 - Use forward slashes in path specifications for cross-platform compatibility
 
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