feat: add gh-cli and gh-mcp feature flags for GitHub integration

- Add gh-mcp flag for GitHub MCP tool instructions
- Add gh-cli flag for GitHub CLI instructions
- Add unlessFlags directive for fallback content
- Validate mutual exclusivity of gh-cli and gh-mcp

Users can now generate commands tailored to their GitHub setup:
- gh-mcp: Use mcp__github__* tools exclusively
- gh-cli: Use gh CLI commands exclusively
- Default: Show generic fallback instructions

Author: wbern

.claude/commands/contribute-a-command.md

@@ -155,7 +155,15 @@ Flexible structure. Interactive commands use `(no arguments - interactive)` hint
 | `beads-integration.md` | PR, planning (featureFlag='beads') |
 | `commit-process.md` | Commit |
 | `no-plan-files.md` | Commit (featureFlag='no-plan-files') |
-| `github-issue-fetch.md` | Issue fetching |
+| `github-issue-fetch.md` | Issue fetching (MCP-first with CLI fallback, default) |
+| `github-issue-fetch-gh-mcp.md` | Issue fetching (MCP only, featureFlag='gh-mcp') |
+| `github-issue-fetch-gh-cli.md` | Issue fetching (CLI only, featureFlag='gh-cli') |
+| `github-pr-fetch.md` | PR fetching (MCP-first with CLI fallback, default) |
+| `github-pr-fetch-gh-mcp.md` | PR fetching (MCP only, featureFlag='gh-mcp') |
+| `github-pr-fetch-gh-cli.md` | PR fetching (CLI only, featureFlag='gh-cli') |
+| `git-host-detection.md` | Multi-host detection (MCP+CLI, default) |
+| `git-host-detection-gh-mcp.md` | Multi-host detection (MCP only, featureFlag='gh-mcp') |
+| `git-host-detection-gh-cli.md` | Multi-host detection (CLI only, featureFlag='gh-cli') |
 | `test-quality-criteria.md` | Code review |
 
 ## Rules

.claude/commands/create-issues.md

@@ -49,17 +49,19 @@ If input looks like a GitHub issue:
 - From branch name: check patterns like `issue-123`, `123-feature`, `feature/123`
 
 **Step 2: Fetch Issue**
-Try GitHub MCP first:
 
-- If available: use `mcp__github__issue_read` to fetch issue details
-- If not available: show message and try `gh issue view <number>`
+Try to fetch the issue using GitHub MCP (mcp__github__issue_read tool).
+
+If GitHub MCP is not configured, show:
 
 ```
 GitHub MCP not configured!
 See: https://github.com/modelcontextprotocol/servers/tree/main/src/github
 Trying GitHub CLI fallback...
 ```
 
+Then try using `gh issue view [ISSUE_NUMBER] --json` as fallback.
+
 **Step 3: Use Issue as Discovery Input**
 
 - Title → Feature name

.claude/commands/worktree-add.md

@@ -55,6 +55,7 @@ Uncommitted changes: `git status --short`
 <step_0b>
   <description>Detect git hosting provider and available tools (only needed if argument is an issue URL)</description>
   <condition>Only run this step if first argument looks like a git hosting URL</condition>
+
 <detect_provider>
   <check_remote_url>git remote get-url origin</check_remote_url>
   <identify_host>

.claude/commands/worktree-cleanup.md

@@ -35,6 +35,7 @@ Current worktrees: `git worktree list`
 <execution_steps>
 <step_0>
   <description>Detect git hosting provider and available tools</description>
+
 <detect_provider>
   <check_remote_url>git remote get-url origin</check_remote_url>
   <identify_host>

README.md

@@ -14,7 +14,7 @@
 [![Made with Claude Code](https://img.shields.io/badge/Made%20with-Claude%20Code-blueviolet)](https://claude.ai/code)
 [![Contributors](https://img.shields.io/github/contributors/wbern/claude-instructions)](https://github.com/wbern/claude-instructions/graphs/contributors)
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen)](https://github.com/wbern/claude-instructions/pulls)
-[![Commands](https://img.shields.io/badge/commands-29-blue)](https://github.com/wbern/claude-instructions#available-commands)
+[![Commands](https://img.shields.io/badge/commands-30-blue)](https://github.com/wbern/claude-instructions#available-commands)
 
 ```
        _==/          i     i          \==_
@@ -236,6 +236,7 @@ flowchart TB
 - `/beepboop` - Communicate AI-generated content with transparent attribution
 - `/add-command` - Guide for creating new slash commands
 - `/kata` - Generate a TDD practice challenge with boilerplate test setup
+- `/adr` - Create an Architecture Decision Record
 - `/research` - Research a problem in parallel via web docs, web search, codebase exploration, and deep ultrathink
 - `/commitlint-checklist-nodejs` - Audit commit hook automation for Node.js projects
 - `/upgrade-deps` - Check for dependency upgrades and assess safety before updating