Fix Edit on GitHub links - correct github_url configuration

- Set github_url to full path: https://github.com/ContextLab/clustrix/blob/master/docs/source/
- Add .readthedocs.yaml for explicit ReadTheDocs configuration
- Add docs/requirements.txt for documentation dependencies
- Remove unnecessary custom templates and html_context overrides

Following sphinx-wagtail-theme documentation for proper GitHub link configuration.
This ensures Edit on GitHub links work correctly on ReadTheDocs.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: jeremymanning

.readthedocs.yaml

@@ -1,25 +1,28 @@
-
-
+# .readthedocs.yaml
 # Read the Docs configuration file
 # See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
 
 # Required
 version: 2
 
-# Set the OS, Python version, and other tools you might need
+# Set the OS, Python version and other tools you might need
 build:
-  os: ubuntu-24.04
+  os: ubuntu-22.04
   tools:
     python: "3.12"
 
-# Build documentation in the "docs/" directory with Sphinx
+# Build documentation in the docs/ directory with Sphinx
 sphinx:
    configuration: docs/source/conf.py
 
-# Install the package with docs dependencies
+# If using Sphinx, optionally build your docs in additional formats such as PDF
+formats: all
+
+# Optionally declare the Python requirements required to build your docs
 python:
    install:
+   - requirements: docs/requirements.txt
    - method: pip
      path: .
      extra_requirements:
-       - docs
+     - docs

docs/requirements.txt

@@ -0,0 +1,6 @@
+sphinx>=4.0
+sphinx-wagtail-theme>=6.0.0
+sphinx-autodoc-typehints>=1.12
+nbsphinx>=0.8
+jupyter>=1.0
+ipython>=7.0

docs/source/conf.py

@@ -46,10 +46,11 @@
 # Wagtail theme options
 html_theme_options = {
     "project_name": "Clustrix",
-    "github_url": "https://github.com/ContextLab/clustrix",
+    "github_url": "https://github.com/ContextLab/clustrix/blob/master/docs/source/",
     "footer_links": "GitHub|PyPI",
 }
 
+
 html_title = "Clustrix Documentation"
 html_short_title = "Clustrix"