Freeze legacy Arduino firmware: pin dependencies, add CI#5
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- platformio.ini: pin platform espressif32@6.12.0 and every library to the exact versions that built the April 2026 binary (from local .pio/libdeps metadata); document the AsyncTCP duplicate-install trap; comment out machine-specific COM ports - arduino-legacy.yml: CI build of firmware + littlefs image, all four flashable artifacts verified and uploaded (90-day retention) - CLAUDE.md: maintenance banner (frozen branch, never merged to main), corrected stale /update OTA claim (no OTA endpoint exists; deploys are cable/serial flash) Verified locally: clean build with pinned set, firmware.bin 963 KB (+2% vs April, explained by the June commit on this branch). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Summary
Legacy freeze for the Arduino/PlatformIO firmware that runs the production greenhouse unit (phase 0 of the ESP-IDF migration; never merged to
main):platformio.ini: platformespressif32@6.12.0and all libraries pinned to the exact versions that built the April 2026 binary (resolved from local.pio/libdepsmetadata). Includes documentation of the AsyncTCP duplicate-install trap (transitiveesp32async/AsyncTCPmust not be pinned explicitly or it links twice)..github/workflows/arduino-legacy.yml: builds firmware + littlefs image on push/PR to this branch; verifies and uploads all four flashable artifacts (90-day retention).CLAUDE.md: maintenance banner; corrected stale/updateOTA claim (no OTA endpoint exists — deploys are cable/serial flash).After merge, the
arduino-finaltag will be moved to the freeze commit sogit checkout arduino-finalis a permanently buildable reference (PRD success criterion).Test plan
firmware.bin963 KB (+2 % vs April, explained by the June commit on this branch)arduino-legacy-buildCI green on this PR🤖 Generated with Claude Code