chore: refactor overall architecture and error handling

[kyokuping]

Summary

This PR introduces minor refactoring and features to improve the overall architecture and error handling.

Key Changes

• feature:
  • Introduced structured logging with tracing.
  • Improved error handling with caching and templating.
  • Implemented directory index and caching with moka and minijinja.
• bug fix:
  • Sanitized directory paths in the auto-generated index page to prevent local path disclosure.
  • Eliminated double writing of errors.
  • Fixed auto-indexing logic.
• refactor/optimization:
  • Encapsulated route serving logic into RouterHandler.
  • Improved error diagnostics by integrating miette.
  • Renamed templates to .jinja for clarity.
  • Modularized request handling and utility functions.
  • Moved Jinja environment management to the Server struct.
  • Simplified response logic.
• test
• CI

Details

• Error handling is now more robust with the integration of miette, providing better diagnostic reports.
• Structured logging using tracing has been added to provide more insight into the application's behavior.
• Caching for directory listings has been implemented using moka to improve performance.

Technical Notes

Quality Control

Related Issues

[codecov-commenter]

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Codecov Report

❌ Patch coverage is 78.72340% with 120 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/error/damas_error.rs	26.08%	34 Missing ⚠️
src/server.rs	32.25%	19 Missing and 2 partials ⚠️
src/router.rs	76.71%	14 Missing and 3 partials ⚠️
src/http.rs	76.27%	11 Missing and 3 partials ⚠️
src/main.rs	0.00%	14 Missing ⚠️
src/util.rs	78.84%	9 Missing and 2 partials ⚠️
test/main_test.rs	93.84%	8 Missing ⚠️
src/error/error_registry.rs	98.55%	0 Missing and 1 partial ⚠️
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Flag	Coverage Δ
rust	89.61% <78.72%> (-0.64%)	⬇️

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Files with missing lines	Coverage Δ
src/index.rs	93.40% <100.00%> (+0.46%)	⬆️
src/lib.rs	100.00% <ø> (+39.15%)	⬆️
src/response.rs	100.00% <100.00%> (ø)
src/error/error_registry.rs	99.46% <98.55%> (ø)
test/main_test.rs	89.24% <93.84%> (+2.34%)	⬆️
src/util.rs	78.84% <78.84%> (ø)
src/http.rs	76.27% <76.27%> (ø)
src/main.rs	0.00% <0.00%> (ø)
src/router.rs	96.30% <76.71%> (-2.24%)	⬇️
src/server.rs	76.33% <32.25%> (-5.18%)	⬇️
... and 1 more

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