Setup server logging to file using standard XDG directory

[Copilot]

Setup server logging to file using standard XDG dir

• Add directories dependency to djls-server crate
• Update init_tracing function to use XDG cache directory instead of /tmp
• Update documentation comments to reflect new log location
• Add tests for XDG directory logic
• Test the changes manually
• Run existing tests to ensure no regressions
• Refactor log directory logic to djls-conf crate
• Change log_dir to const and use Camino Utf8 paths
• Move all log directory logic including creation to djls-conf function
• Replace unwrap with graceful fallback for UTF-8 conversion

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Setup server logging to file using standard XDG dir</issue_title>
<issue_description>Follow up to #170, right now we're just logging to /tmp but we should really use the XDG standard dir for this -- especially because we have the directories crate right there.</issue_description>

<agent_instructions>We already have the pieces for this in place, directories crate for XDG dirs, logging infrastructure, they just need to be plugged together</agent_instructions>

Comments on the Issue (you are @copilot in this section)

Fixes #180

---

💬 Share your feedback on Copilot coding agent for the chance to win a $200 gift card! Click here to start the survey.

[joshuadavidthomas]

@copilot logic for the location of the logging dir should be in the conf crate and exported from it and used in the server crate.

[Copilot]

@copilot logic for the location of the logging dir should be in the conf crate and exported from it and used in the server crate.

Done. Added log_dir() function to djls-conf that returns the XDG cache directory, and updated djls-server to use it. The directories dependency has been removed from djls-server since it now uses the exported function. (commit: see above)

[codspeed-hq]

CodSpeed Performance Report

Merging #334 will not alter performance

_{Comparing copilot/setup-server-logging-to-xdg-dir (25dc20f) with main (832a588)¹}

Summary

✅ 20 untouched

Footnotes

1. No successful run was found on main (b951058) during the generation of this report, so 832a588 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩