refactor: add configurable CLAUDE_HUB_DIR environment variable

- Add CLAUDE_HUB_DIR to .env.example with default ~/.claude-hub
- Update .gitignore to use .claude-hub/ for Claude Hub directory
- Allows users to customize Claude Hub storage location
- Consolidates all Claude authentication, config, and database files

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

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

.env.example

@@ -43,6 +43,10 @@ DEFAULT_BRANCH=main
 # Claude API Settings
 ANTHROPIC_API_KEY=your_anthropic_api_key_here
 
+# Claude Hub Directory
+# Directory where Claude Hub stores configuration, authentication, and database files (default: ~/.claude-hub)
+CLAUDE_HUB_DIR=/home/user/.claude-hub
+
 # Container Settings
 CLAUDE_USE_CONTAINERS=1
 CLAUDE_CONTAINER_IMAGE=claudecode:latest

.gitignore

@@ -77,6 +77,9 @@ config
 auth.json
 service-account.json
 
+# Claude Hub Directory
+.claude-hub/
+
 # Docker secrets
 secrets/