- FIRMWARE_VERSION 1.9.3 → 1.9.4 - CHANGELOG: add v1.9.3 (modular refactor) and v1.9.4 (bug fixes) entries - README: add v1.9.3/v1.9.4 journey sections, fix project structure tree, update version references, correct SDK credentials description Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>