feat: Add GitHub CLI Extension pages and gh-sub-issue documentation

Author: codekiln

journals/2025_11_04.md

@@ -3,4 +3,7 @@
 		- Evaluating [GitHub - deathau/markdownload: A Firefox and Google Chrome extension to clip websites and download them into a readable markdown file.](https://github.com/deathau/markdownload)
 - [[Person/Gordon Pedersen]] created - Software developer and maintainer of markdownload browser extension, known online as death.au
 - [[CursorAI/Feature/Browser Control]] - Created page documenting Cursor's browser control feature through MCP server, allowing AI to interact with web pages directly
-- [[Claude Code/EnvVar/CLAUDE_CODE_MAX_OUTPUT_TOKENS/Report/Avoid api error token max on bedrock]] - Created comprehensive research report on handling token limit errors in Claude Code via Amazon Bedrock
+- [[Claude Code/EnvVar/CLAUDE_CODE_MAX_OUTPUT_TOKENS/Report/Avoid api error token max on bedrock]] - Created comprehensive research report on handling token limit errors in Claude Code via Amazon Bedrock
+- [[GitHub/CLI/Extension]] - Created page for GitHub CLI extensions collection
+- [[GitHub/CLI/Extension/gh-sub-issue]] - Created page documenting gh-sub-issue extension for managing sub-issues (child issues) in GitHub
+- [[GitHub/CLI]] - Updated to include Extensions section linking to GitHub CLI Extension page

pages/GitHub___CLI.md

@@ -11,4 +11,6 @@ tags:: [[CLI/Tool]]
 			- [[GitHub/CLI/EnvVar/GH_TOKEN]]
 				- `Alternatively, populate the GH_TOKEN environment variable with a GitHub API authentication token.`
 				- See also [[GitHub/CLI/Q/Is it possible to scope gh CLI permissions by directory or repo]]
+	- ## Extensions
+		- [[GitHub/CLI/Extension]]
 		-

pages/GitHub___CLI___Extension.md

@@ -0,0 +1,7 @@
+alias:: [[GitHub CLI Extensions]], [[gh extension]]
+
+- # GitHub CLI Extensions
+	- Collection of GitHub CLI extensions
+	- ## Extensions
+		- [[GitHub/CLI/Extension/gh-sub-issue]]
+

pages/GitHub___CLI___Extension___gh-sub-issue.md

@@ -0,0 +1,12 @@
+# [yahsan2/gh-sub-issue: GitHub CLI extension for managing sub-issues (child issues)](https://github.com/yahsan2/gh-sub-issue)
+tags:: [[GitHub/CLI/Extension]], [[CLI/Tool]], [[Go]]
+
+- GitHub CLI extension written in Go that facilitates managing sub-issues (child issues)
+	- ## Features
+		- 🔗 Link existing issues - Connect existing issues as sub-issues to a parent issue
+		- ➕ Create sub-issues - Create new issues directly linked to a parent
+		- 📋 List sub-issues - View all sub-issues connected to a parent issue
+		- ❌ Remove sub-issues - Unlink sub-issues from their parent without deleting them
+		- 🎨 Multiple output formats - Support for TTY (colored), plain text, and JSON output
+		- 🔄 Cross-repository support - Work with issues across different repositories
+