Add Redot 26.1 LTS documentation branch

[MichaelFisher1997]

This PR creates the 26.1 branch with:

• Version label set to 26.1 in conf.py
• Version selector showing only 26.1

This is the foundation for the 26.1 LTS documentation.

Summary by CodeRabbit

• Chores
  • Updated project version from 4.4 to 26.1.
  • Simplified documentation version links to reference the current version.

[coderabbitai]

📝 Walkthrough

Walkthrough

Version numbers were updated from 4.4 to 26.1 across configuration and template files. The versions template was simplified to list a single version entry instead of multiple version references. Configuration file formatting was standardized for consistency.

Changes

Cohort / File(s)	Summary
Version Configuration Updates _templates/versions.html, conf.py	Updated project version from 4.4 to 26.1 in metadata and context. Simplified version mappings in template to contain only "26.1" entry mapping to root path. Standardized quotation marks and condensed multi-line configuration values for consistency.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

Hop along to version twenty-six! 🐰
One clean path replaces all the mix,
Config condensed, quotes aligned just right,
A simpler version, bright and tight! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title accurately describes the main objective: adding a new 26.1 LTS documentation branch with version updates to conf.py and the version selector.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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[MichaelFisher1997]

Note for maintainers: This PR should be merged FIRST before PR #143.

This creates the 26.1 branch with the correct version labeling that the workflow in PR #143 depends on.

[MichaelFisher1997]

Closing to recreate with correct target branch

[coderabbitai]

Actionable comments posted: 0

Caution

Some comments are outside the diff and can’t be posted inline due to platform limitations.

⚠️ Outside diff range comments (1)

conf.py (1)

179-184: ⚠️ Potential issue | 🟡 Minor

Update GitHub references to point to the Redot repository.

The github_user and github_repo values in html_context (lines 181-183) reference godotengine/godot-docs, but this repository is Redot-Engine/redot-docs. This will cause "Edit on GitHub" links to point to the wrong repository. Update these values to redot-engine and redot-docs respectively.