Local product video media notices

The A-F layouts, procedural accompaniment algorithms and generated motifs in
local-video-templates.js and local-video-assets.js were composed for this
extension. No third-party audio recording or existing melody is bundled.
Product photographs remain the property of their respective rights holders.
The extension uses installed system fonts and does not redistribute font files.

Traditional Chinese captions use unmodified opencc-js 1.4.1 cn2t UMD, fetched
from the official npm package with its SHA-512 package integrity verified.
Package: https://www.npmjs.com/package/opencc-js/v/1.4.1
Repository: https://github.com/nk2028/opencc-js
License: MIT AND Apache-2.0 (bundled dictionary data).
Full notices are in licenses/opencc-js/.
Converter mode: { from: 'cn', to: 'tw' }.
Conversion applies to generated captions only. It does not alter text embedded
inside product photographs, and does not verify product claims or specifications.
