Enhance and Clean Up by AI Agents

SphereN (sphere-n-cpp) v1.1.1 Release Notes

This is a maintenance & quality-of-life update for SphereN v1.1.1, focused on modern C++ improvements, build compatibility, documentation, and dependency upgrades.

🚀 What’s New

• Added AGENTS.md: Developer guide for agentic coding workflows
• Added IFLOW.md: Full project context & developer documentation
• Added svgbob figures for visual documentation

✨ Improvements

• Applied constexpr wherever appropriate for compile-time optimization
• Replaced push_back() + std::endl with emplace_back() + '\n' for performance & cleaner code
• Updated documentation comments (manual + via OpenCode + MiniMax M2.5)
• Cleaned up trailing whitespaces
• Ran auto-format (--fix-format) for consistent code style

🔧 Build & Compatibility

• Removed MSVC warnings /wd4819 / /wd4996
• Added -Wno-deprecated-literal-operator for Termux build compatibility
• Version bump: 1.1 → 1.1.1 in CMake project config

📦 Dependencies

• Upgraded fmt to 12.1.0
• Upgraded spdlog to 1.17.0

🧪 CI & Docs

• Minor README clarifications
• Documentation config tweaks (Doxygen + m.css)
• Fixed documentation warnings & logging noise

📂 Changed Files

17 files changed, 893 additions, 92 deletions

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Full Changelog

1. Add svgbob figures
2. Use constexpr whenever appropriate
3. Try to remove /wd4819 and /wd4996
4. Add more documentation by iFlow CLI
5. Remove trailing whitespaces
6. Merge branch 'main'
7. Update document comments (iflow)
8. Add document comments (opencode + MiniMax M2.5)
9. Add -Wno-deprecated-literal-operator for Termux
10. Apply --fix-format
11. Replace push_back()/endl with emplace_back()/\n
12. Upgrade fmt 12.1.0 & spdlog 1.17.0
13. Apply --fix-format
14. Prepare for 1.1.1

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Full Changelog: 1.1...1.1.1