docs(ai): compare runtime and model redistribution licenses #93

Add a concise licensing matrix for the runtime and baseline-model candidates being considered in #75.

Scope

For each candidate, record:

• Runtime and model name/version.
• SPDX identifier or exact license name.
• A link to the primary license text.
• Whether redistribution, modification, and commercial use are permitted.
• Required notices, attribution, or source-code obligations.
• Any model-specific acceptable-use or geographic restrictions.

Acceptance criteria

• Every statement links to a primary license or official model card.
• Unknown or ambiguous terms are marked for review instead of guessed.
• The document separates runtime licensing from model-weight licensing.
• This issue gathers verifiable facts; it does not provide legal advice or choose the final runtime.

Parent: #75