chore: restructure repository for bash and .NET coexistence

[Sstark97]

Summary

Restructures the repository to support parallel development of both Bash (v1.x) and .NET (v2.x) versions, preparing for the .NET 10 AOT migration.

Changes

📁 Repository Structure

• ✅ Moved all Bash files to bash/ directory (preserving git history)
• ✅ Common files remain at root (README, CONTRIBUTING, LICENSE)
• ✅ Created structure for future net/ directory

📄 Documentation

• ✅ Created PROGRESS.md with complete migration roadmap
• ✅ Updated README.md to document both versions
  • Added version comparison table
  • Updated installation instructions
  • Added migration notice banner

⚙️ Configuration

• ✅ Updated .gitignore with .NET-specific entries
• ✅ Split CI workflows:
  • bash-ci.yml - Runs only on changes to bash/
  • net-ci.yml - Manual trigger only (disabled until Issue Initialize .NET 10 solution with hexagonal folder structure #25)

🧪 Verification

• ✅ Bash version tested and working from bash/ directory
• ✅ All file moves preserve git history (using git mv)

Repository Structure

dev_sweep/
├── bash/          # v1.x - Production (macOS only)
├── net/           # v2.x - .NET 10 AOT (coming soon)
├── PROGRESS.md    # Migration roadmap
├── README.md      # Updated documentation
└── ...            # Common files

Next Steps

After merging this PR, development can begin on:

• Issue Initialize .NET 10 solution with hexagonal folder structure #25 - Initialize .NET 10 solution
• Issue Implement domain value objects and enums #26 - Implement domain value objects
• Issue Implement domain entities and services #27 - Implement domain entities

See PROGRESS.md for the complete roadmap.

Testing

• Bash version works: bash bin/devsweep --version
• Bash CI workflow configured correctly
• .NET CI workflow disabled (prevents failures)
• All git moves preserve history

Resolves #45