dsh-license-obligation-proof: Evidence Generation Plugin for License Obligation Delivery Closed Loop

The `dsh-license-obligation-proof` plugin for DeepSeek Harness (DSH) is designed to generate and validate delivery evidence for compliant artifacts, filling the gap between scanning and proof of delivery. It focuses on offline, deterministic evidence generation and consistency validation, producing reports that include hashes and metadata, while explicitly indicating that exhaustive component-set coverage and legal compliance cannot be proven. The plugin does not perform scanning or legal interpretation and must be used in conjunction with the DSH environment.