Fix: Summary counters show zero for “Last Hour” when requests are recent in AI Request Logs

[prasadkarmalkar]

What?

Closes #666

Why?

On AI Request Logs, the header time-period dropdown correctly filters the log table for short windows. Still, the summary cards at the top show 0 when “Last Hour” is selected, even when requests were made within the last hour.

How?

Replace NOW() with UTC_TIMESTAMP() in all get_date_condition() cases so the period cutoff aligns with the stored GMT timestamps.

Testing Instructions

1. Use a WordPress install where the server/MySQL timezone is not UTC (e.g. US/New York, Europe/Berlin) - this makes the bug easiest to see.
2. Ensure the AI plugin is active, and AI request logging is enabled.
3. Trigger at least one AI request (e.g., use an AI feature in the plugin) and confirm a new row appears in AI Request Logs within the last hour.
4. Open AI Request Logs in wp-admin.
5. Change the header dropdown to “Last Hour”.
6. Check the summary cards' values are non-zero

Screenshots or screencast

Before	After

Changelog Entry

Fixed - Summary statistics showing zero for short time periods on non-UTC MySQL servers.

[github-actions]

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Co-authored-by: prasadkarmalkar <prasadkarmalkar@git.wordpress.org>
Co-authored-by: dkotter <dkotter@git.wordpress.org>

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[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 74.68%. Comparing base (4f27b52) to head (75717dd).
⚠️ Report is 6 commits behind head on develop.

Files with missing lines	Patch %	Lines
includes/Logging/AI_Request_Log_Repository.php	50.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             develop     #671   +/-   ##
==========================================
  Coverage      74.68%   74.68%           
  Complexity      1754     1754           
==========================================
  Files             85       85           
  Lines           7549     7549           
==========================================
  Hits            5638     5638           
  Misses          1911     1911           

Flag	Coverage Δ
unit	74.68% <50.00%> (ø)

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