[hluk]

Uses a custom GNOME extension for monitoring clipboard, since apps
themselves cannot do that.

The extension cannot set multiple formats to clipboard. The most useful
known format is selected, or a random one.

Assisted-by: gpt-5.3-codex

Fixes #2342, fixes #1243

[codecov]

Codecov Report

❌ Patch coverage is 75.11962% with 104 lines in your changes missing coverage. Please review.
✅ Project coverage is 80.21%. Comparing base (c7c29e7) to head (e7148c6).
⚠️ Report is 183 commits behind head on master.

Files with missing lines	Patch %	Lines
src/platform/x11/x11platformclipboard.cpp	68.60%	97 Missing ⚠️
src/platform/platformclipboard.cpp	92.45%	4 Missing ⚠️
src/platform/dummy/dummyclipboard.cpp	50.00%	3 Missing ⚠️

❌ Your patch status has failed because the patch coverage (75.11%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3434      +/-   ##
==========================================
- Coverage   80.28%   80.21%   -0.07%     
==========================================
  Files         238      240       +2     
  Lines       29903    30274     +371     
==========================================
+ Hits        24007    24284     +277     
- Misses       5896     5990      +94     

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