feat: [#31] transition proof-of-concepts to modular structure

- Create docs/redesign/proof-of-concepts/ directory with organized files
- Split monolithic proof-of-concepts.md into 5 specialized files:
  - README.md: Overview and navigation for all PoCs
  - current-demo.md: Analysis of existing Bash/OpenTofu/Docker demo
  - perl-ansible-poc.md: Perl/Ansible approach documentation
  - rust-poc.md: Rust implementation proof-of-concept
  - comparative-analysis.md: Comprehensive comparison and recommendations
- Preserve all technical content and analysis depth
- Improve navigation and maintainability of PoC documentation
- Achieve complete markdown formatting compliance (MD032)
- Enable individual PoC analysis access and updates

Author: josecelano

docs/redesign/proof-of-concepts/README.md

@@ -0,0 +1,72 @@
+# Proof of Concepts Analysis
+
+This folder contains analyses of the various proof of concepts (PoCs) developed to inform the redesign
+of the Torrust Tracker deployment system. Each PoC explored different technologies and
+approaches to understand their viability for a production-grade deployment solution.
+
+## Overview
+
+Three main proof of concepts were developed to explore different approaches:
+
+1. **[Torrust Tracker Demo](https://github.com/torrust/torrust-tracker-demo)** (This Repository)
+
+   - **Technologies**: Bash scripts, OpenTofu/Terraform, cloud-init, Docker Compose
+   - **Focus**: Infrastructure as Code with libvirt/KVM and cloud deployment
+   - **Analysis**: [current-demo.md](current-demo.md)
+
+2. **[Perl/Ansible PoC](https://github.com/torrust/torrust-tracker-deploy-perl-poc)**
+
+   - **Technologies**: Perl, Ansible, OpenTofu
+   - **Focus**: Declarative configuration management with mature automation tools
+   - **Analysis**: [perl-ansible-poc.md](perl-ansible-poc.md)
+
+3. **[Rust PoC](https://github.com/torrust/torrust-tracker-deploy-rust-poc)**
+   - **Technologies**: Rust
+   - **Focus**: Type-safe, performance-oriented deployment tooling
+   - **Analysis**: [rust-poc.md](rust-poc.md)
+
+## Comparative Analysis
+
+For a comprehensive comparison of all approaches, see:
+
+- **[Comparative Analysis](comparative-analysis.md)**: Technology matrix and strategic recommendations
+
+## Structure
+
+This analysis is organized into the following files:
+
+- **[README.md](README.md)** (this file): Overview and navigation
+- **[current-demo.md](current-demo.md)**: Analysis of the current bash-based demo implementation
+- **[perl-ansible-poc.md](perl-ansible-poc.md)**: Detailed analysis of the Perl/Ansible approach
+- **[rust-poc.md](rust-poc.md)**: Comprehensive analysis of the Rust-based implementation
+- **[comparative-analysis.md](comparative-analysis.md)**: Side-by-side comparison and strategic recommendations
+
+## Key Findings
+
+### Technology Assessment Summary
+
+| Aspect                    | Current Demo (Bash) | Perl/Ansible PoC | Rust PoC  |
+| ------------------------- | ------------------- | ---------------- | --------- |
+| **Type Safety**           | None                | Limited          | Strong    |
+| **Learning Curve**        | Low                 | High             | Moderate  |
+| **AI Support**            | Good                | Poor             | Good      |
+| **Development Velocity**  | High                | Low              | Moderate  |
+| **Documentation Quality** | Good                | Basic            | Excellent |
+
+### Strategic Recommendations
+
+1. **Type Safety Priority**: Consider Rust for critical deployment logic where reliability is paramount
+2. **Ansible Integration**: Adopt Ansible across all approaches for configuration management
+3. **Documentation Standards**: Emulate Rust PoC documentation quality and organization
+4. **Testing Strategy**: Implement comprehensive E2E testing regardless of language choice
+5. **Research Methodology**: Adopt thorough analysis approach from Rust PoC
+
+### Next Steps
+
+Based on this analysis, the redesign should consider:
+
+- **Hybrid Approach**: Combining strengths from multiple PoCs
+- **Risk Mitigation**: Ensuring team capability and managing complexity
+- **Migration Path**: Planning incremental adoption from current implementation
+
+For detailed insights and recommendations, refer to the individual analysis files.