field: restore swift ffi crate for field library extraction - field_ios

commit 617a22160a46bb4da262ba7e37427149573859a1
parent ca3378e0c4a9cf8b9a1bd1ba292d1570ee64aaf5
Author: triesap <tyson@radroots.org>
Date:   Thu, 11 Jun 2026 15:59:28 -0700

field: restore swift ffi crate for field library extraction

	field_ios In-the-field app for Radroots on iOS git clone https://radroots.dev/git/field_ios.git
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