Expose Router Address in SDK Configuration

[alainncls]

Expose Router Address in SDK Configuration

Problem

The SDK exposes contract addresses for all registries via the Conf interface:

• portalRegistryAddress
• moduleRegistryAddress
• schemaRegistryAddress
• attestationRegistryAddress

The router address is not exposed, requiring consumers to discover it through other means.

Expected Behavior

The router address should be accessible in the same way as registry addresses:

• Available in the Conf interface
• Included in all default network configurations (DEFAULT_LINEA_MAINNET, DEFAULT_LINEA_SEPOLIA, etc.)

Acceptance Criteria

• Router address is retrievable from SDK configuration
• All supported networks have their router address defined
• Existing SDK consumers are not broken (non-breaking change)