- Update OpenCode compose template with web server on port 3000
- Add default_port=3000 and interfaces=[terminal, web] to OpenCode seed data
- Remove hardcoded 8080 fallback in tunnel creation
- Fail gracefully when tool type has no default_port configured
- Update frontend ToolType API to include default_port, category, interfaces
- Add port, category, and interfaces fields to tool type creation form
- Display port and interfaces in tool type cards
- Create migration 0012 to make default_port non-nullable
- Set default_port values for existing built-in tool types
- Quality gates: typecheck ✓, build ✓, Python syntax ✓