Credit AI-assisted documentation and tooling (OpenCode / Qwen3.8 Flash Next)

Add an Acknowledgements section to the README and a matching CHANGELOG line
noting that the v1.0.0 documentation and repository tooling were drafted with
OpenCode running the Qwen3.8 Flash Next model, reviewed by the maintainer.

CHANGELOG.md

@@ -27,6 +27,9 @@ First public release of the ESP32-C3 CO₂ & environment sensor board (prototype
   and docs (`LICENSE.MIT`).
 - `.gitignore` covering KiCad local history/backups/lock files, ESPHome build
   artifacts, live firmware credentials, and OS/editor noise.
+- Documentation and repository tooling for this release (README, changelog,
+  library tables, `.gitignore`, release packaging) drafted with OpenCode running
+  the Qwen3.8 Flash Next model, reviewed by the maintainer.
 
 ### Known issues
 

README.md

@@ -214,3 +214,13 @@ SPDX-FileCopyrightText: 2026 Hannes Gehrmann
 Making a board from these files and distributing it is explicitly allowed; if you modify the design
 and convey it, CERN-OHL-S requires you to publish the modified design under the same licence and to
 mark what you changed (sections 3.2 and 3.3).
+
+## Acknowledgements
+
+The hardware design — schematic, layout, symbols, footprints, fabrication data — and the firmware
+configuration are by **Hannes Gehrmann**.
+
+The documentation and repository tooling in the v1.0.0 release — this README, `CHANGELOG.md`, the
+project-local library tables (`fp-lib-table`, `sym-lib-table`), the `.gitignore`, and the release
+packaging (project rename, moving fabrication outputs to release assets) — were drafted with
+**OpenCode** running the **Qwen3.8 Flash Next** model, and reviewed by the maintainer.