## ADDED Requirements

### Requirement: Tool types must define a default port

The system SHALL require all tool types to specify a `default_port`.

#### Scenario: Creating tool type without port
- **GIVEN** a user creating a new tool type
- **WHEN** they omit the `default_port` field
- **THEN** the system rejects the request with a 422 error

#### Scenario: Creating tool type with port
- **GIVEN** a user creating a new tool type with `default_port: 3000`
- **WHEN** the request is submitted
- **THEN** the tool type is created successfully

### Requirement: Tool type port must be exposed in compose template

The system SHALL validate that the compose template exposes the port defined in `default_port`.

#### Scenario: Port mismatch
- **GIVEN** a tool type with `default_port: 8443`
- **WHEN** the compose template only exposes port `3000`
- **THEN** the system rejects with an error indicating the port mismatch

#### Scenario: Port exposed correctly
- **GIVEN** a tool type with `default_port: 8443`
- **WHEN** the compose template exposes port `8443` via `ports: ["8443:8443"]`
- **THEN** the tool type is accepted

### Requirement: Tool types support multiple interfaces

The system SHALL allow tool types to specify multiple interfaces.

#### Scenario: Tool with web and terminal interfaces
- **GIVEN** a tool type with `interfaces: ["terminal", "web"]`
- **WHEN** an instance is created
- **THEN** the instance shows both "Open" (web) and "Terminal" buttons in the UI
