Create copy all messages button in Suggestor

[SAKavli]

Resolves specific request from user on slack.

My first iterations consisted of a class method which I wanted to insert among the other buttons, hence the refactoring of the other buttons. That refactoring was strictly not necessary for the final code, but I still believe it is an improvement, so I decided to keep it.

Screen.Recording.2026-01-08.at.16.03.10.mov

This pull request implements a "Copy all messages" button in the Suggestor widget, allowing users to copy all error, warning, and deprecation messages to the clipboard with a single click.

Key Changes:

Added a new _CopyAllButton class that extends CopyButton to copy all messages at once
Refactored the action buttons layout to accommodate the new copy all button alongside existing close/continue buttons
Added comprehensive tests to verify the copy all functionality works correctly across different message types

• PR title captures the intent of the changes, and is fitting for release notes.
• Added appropriate release note label
• Commit history is consistent and clean, in line with the contribution guidelines.
• Make sure unit tests pass locally after every commit (git rebase -i main --exec 'just rapid-tests')

When applicable

• When there are user facing changes: Updated documentation
• New behavior or changes to existing untested code: Ensured that unit tests are added (See Ground Rules).
• Large PR: Prepare changes in small commits for more convenient review
• Bug fix: Add regression test for the bug
• Bug fix: Add backport label to latest release (format: 'backport release-branch-name')

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.53%. Comparing base (2a0015b) to head (69dae97).
⚠️ Report is 58 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #12588      +/-   ##
==========================================
- Coverage   90.58%   90.53%   -0.05%     
==========================================
  Files         435      435              
  Lines       29929    30036     +107     
==========================================
+ Hits        27110    27192      +82     
- Misses       2819     2844      +25     

Flag	Coverage Δ
cli-tests	37.33% <0.00%> (-0.03%)	⬇️
gui-tests	68.61% <94.59%> (-0.07%)	⬇️
performance-and-unit-tests	73.90% <100.00%> (-0.04%)	⬇️
test	38.04% <0.00%> (-0.07%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[Copilot]

Pull request overview

This pull request implements a "Copy all messages" button in the Suggestor widget, allowing users to copy all error, warning, and deprecation messages to the clipboard with a single click.

Key Changes:

• Added a new _CopyAllButton class that extends CopyButton to copy all messages at once
• Refactored the action buttons layout to accommodate the new copy all button alongside existing close/continue buttons
• Added comprehensive tests to verify the copy all functionality works correctly across different message types

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
tests/ert/unit_tests/gui/test_suggestor.py	Adds tests for the copy all button functionality, verifying it correctly copies errors, warnings, and deprecations with consistent whitespace formatting
src/ert/gui/ertwidgets/suggestor/suggestor.py	Implements the _CopyAllButton class and refactors the action button layout to include the new copy all button when messages are present

[codspeed-hq]

CodSpeed Performance Report

Merging this PR will not alter performance

_{Comparing SAKavli:implement-copy-all-button (69dae97) with main (c7dae2d)}

Summary

✅ 22 untouched benchmarks

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

[HakonSohoel]

👌