Fix git authentication issues for remote branch creation and push

docs/git-authentication-fix.md

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+# Git Authentication Issue Investigation and Fix
+
+## Problem Summary
+
+The issue with creating and pushing remote git branches was caused by missing environment variables and improper git authentication configuration for HTTPS operations.
+
+## Root Causes Identified
+
+1. **Missing HOME Environment Variable**: The `$HOME` environment variable was not set, causing git to fail when trying to access global configuration files.
+
+2. **No Git Credential Helper**: Git was not configured with a credential helper to manage authentication for HTTPS operations.
+
+3. **Missing Git Credentials**: Although the `GH_TOKEN` environment variable was available, git was not configured to use it for authentication.
+
+## Error Messages Encountered
+
+- Initial error reported: `Permission denied (publickey)`
+- Actual error during testing: `fatal: could not read Username for 'https://github.com': No such device or address`
+- Global config error: `fatal: $HOME not set`
+
+## Investigation Results
+
+### Environment Analysis
+
+- **Current user**: `root`
+- **Working directory**: `/roo/repos/Roo-Code`
+- **GitHub CLI status**: ✅ Properly authenticated as `roomote-bot`
+- **GitHub token**: ✅ Available as `GH_TOKEN` environment variable
+- **Git remote configuration**: ✅ Properly configured to use HTTPS (`https://github.com/RooCodeInc/Roo-Code.git`)
+
+### Configuration Issues Found
+
+- `$HOME` environment variable: ❌ Not set
+- Git credential helper: ❌ Not configured
+- Git credentials file: ❌ Missing
+- Global git configuration: ❌ Inaccessible due to missing `$HOME`
+
+## Solution Implemented
+
+### 1. Environment Setup
+
+```bash
+export HOME=/root
+```
+
+### 2. Git Credential Configuration
+
+```bash
+git config --global credential.helper store
+```
+
+### 3. GitHub Token Authentication
+
+```bash
+echo "https://roomote-bot:[email protected]" > ~/.git-credentials
+```
+
+### 4. Automated Setup Script
+
+Created `scripts/setup-git-auth.sh` to automate the fix and ensure consistent configuration.
+
+## Testing Results
+
+After implementing the fix:
+
+- ✅ Successfully created a test branch: `test-branch-push-investigation`
+- ✅ Successfully pushed the branch to remote repository
+- ✅ Git authentication working properly for HTTPS operations
+
+## Recommendations
+
+### Immediate Actions
+
+1. Run the setup script: `./scripts/setup-git-auth.sh`
+2. Ensure `$HOME` environment variable is set in your shell profile
+3. Verify git operations work as expected
+
+### Long-term Solutions
+
+1. **Environment Configuration**: Ensure `$HOME` is set in system environment or container configuration
+2. **Automated Setup**: Include the git authentication setup in deployment/initialization scripts
+3. **Documentation**: Keep this documentation updated for future reference
+
+### Prevention
+
+1. Add environment variable checks to CI/CD pipelines
+2. Include git authentication verification in health checks
+3. Document required environment variables for development setup
+
+## Usage
+
+To fix git authentication issues, run:
+
+```bash
+./scripts/setup-git-auth.sh
+```
+
+This script will:
+
+- Set the `$HOME` environment variable if missing
+- Configure git credential helper
+- Set up GitHub token authentication
+- Test the configuration
+- Provide clear feedback on the setup status
+
+## Technical Details
+
+### Git Configuration After Fix
+
+- **Credential helper**: `store`
+- **Authentication method**: HTTPS with token
+- **Credentials location**: `~/.git-credentials`
+- **Remote URL**: `https://github.com/RooCodeInc/Roo-Code.git`
+
+### Environment Variables Required
+
+- `GH_TOKEN`: GitHub personal access token
+- `HOME`: User home directory path (set to `/root`)
+
+## Troubleshooting
+
+If you encounter similar issues in the future:
+
+1. Check if `$HOME` is set: `echo $HOME`
+2. Verify GitHub token is available: `echo $GH_TOKEN | head -c 10`
+3. Check git credential helper: `git config --get credential.helper`
+4. Test git authentication: `git ls-remote origin`
+5. Run the setup script: `./scripts/setup-git-auth.sh`

scripts/setup-git-auth.sh

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+#!/bin/bash
+
+# Git Authentication Setup Script
+# This script fixes the git authentication issues by setting up proper environment variables
+# and git configuration for HTTPS authentication with GitHub tokens.
+
+set -e
+
+echo "Setting up Git authentication..."
+
+# Set HOME environment variable if not set
+if [ -z "$HOME" ]; then
+    export HOME=/root
+    echo "✓ Set HOME environment variable to /root"
+fi
+
+# Ensure the HOME directory exists
+mkdir -p "$HOME"
+
+# Configure git credential helper to use stored credentials
+git config --global credential.helper store
+echo "✓ Configured git credential helper"
+
+# Set up git credentials using the GitHub token
+if [ -n "$GH_TOKEN" ]; then
+    echo "https://roomote-bot:[email protected]" > "$HOME/.git-credentials"
+    echo "✓ Configured GitHub authentication with token"
+else
+    echo "⚠️  Warning: GH_TOKEN environment variable not found"
+    echo "   Please ensure the GitHub token is available as GH_TOKEN"
+fi
+
+# Set git user configuration if not already set
+if ! git config --global user.name >/dev/null 2>&1; then
+    git config --global user.name "roomote-bot"
+    echo "✓ Set git user.name to roomote-bot"
+fi
+
+if ! git config --global user.email >/dev/null 2>&1; then
+    git config --global user.email "[email protected]"
+    echo "✓ Set git user.email"
+fi
+
+# Test git authentication
+echo "Testing git authentication..."
+if git ls-remote origin >/dev/null 2>&1; then
+    echo "✅ Git authentication test successful!"
+else
+    echo "❌ Git authentication test failed"
+    exit 1
+fi
+
+echo "Git authentication setup complete!"