AdminTalk optional nature sound previews

Birds: Birds forest.ogg by Barracuda1983
Source and license: https://commons.wikimedia.org/wiki/File:Birds_forest.ogg
Rain: Rain.ogg by ジダネ
Source and license: https://commons.wikimedia.org/wiki/File:Rain.ogg
Both original file pages identify a public-domain self-release with an unrestricted-use fallback. No endorsement is implied.

Review processing: mono 44.1 kHz; 0.75-second equal-power tail/head crossfades within the excerpt; repeats to 30 seconds; 100 ms preview fade-in/out; MP3 128 kbps. Each file reports 30.040816 seconds including MP3 padding.
Birds SHA256: 68ef34dd72468fce3bb53e04728cd7c0f8891dd06c944cc9ff0032d1db0359fd
Rain SHA256: c2c940d2c0d4b67f896d760ec1a98ab6a76d10373e8073256cd3b3f358611855

These are finite review excerpts, not seamless looping masters. Playback is one-shot and requires an explicit visitor action. No narration, music or synthetic replacement has been added. Numeric decoding checks do not establish pleasantness or absence of unexpected background noise. Source selection is subject to listening review before publication.