docs(traversal) Add more doctests

[tony]

Summary by Sourcery

Documentation:

• Added doctests for traversal examples, covering server, session, window, and pane interactions, including filtering and relationship checks

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request adds comprehensive doctests to the traversal documentation, demonstrating how to interact with tmux servers, sessions, windows, and panes using the libtmux API. It includes examples for setup, filtering, finding objects, checking relationships, and activity status.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Added doctests to the traversal documentation to illustrate the usage of the libtmux API.	Added a setup section with instructions for creating a test session. Included examples for interacting with the server, session, window, and pane levels. Demonstrated filtering and finding objects within the tmux hierarchy. Showcased how to check relationships between different tmux objects. Provided examples for checking the active status of windows and panes.	docs/topics/traversal.md

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.77%. Comparing base (4a08aa1) to head (283ee32).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #567      +/-   ##
==========================================
+ Coverage   88.72%   88.77%   +0.04%     
==========================================
  Files          36       36              
  Lines        4027     4027              
  Branches      372      372              
==========================================
+ Hits         3573     3575       +2     
+ Misses        312      310       -2     
  Partials      142      142              

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

[sourcery-ai]

Hey @tony - I've reviewed your changes - here's some feedback:

Overall Comments:

• The doctests are a great addition, but consider adding a teardown step to remove the test session.
• It would be helpful to include examples of how to send commands to tmux objects.

Here's what I looked at during the review

• 🟡 General issues: 1 issue found
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[sourcery-ai]

nitpick (typo): Minor typo: Add "the" before "existing server".

The comment should read "# Create a test session using the existing server".

Suggested change

	>>> session = server.new_session() # Create a test session using existing server
	>>> session = server.new_session() # Create a test session using the existing server