- RawPacket struct carries raw bytes, IP, port from AsyncUDP callback
- xQueueSendFromISR in callback (ISR-safe) — zero JSON parsing in callback
- parseTask runs in separate FreeRTOS task, drains rawQueue, parses JSON
- STATUS command handled immediately in parseTask with UDP response to sender
- commandQueue declared extern for animation engine (Plan 03) to consume
- main.cpp: include wifi_server.h, call startUdpServer() after WIFI_PS_NONE
- LedCommand, AnimParams, Zone, CmdType structs with all fields per D-05/D-06
- parseCommand(): validates v:1 version, routes schrank/wand/all zones, parses cmd/animation
- RGBW colors array parsed from params.colors; defaults to single [255,255,255,255]
- buildStatusResponse(): serializes current state to JSON for STATUS cmd reply
- Errors logged to Serial, no UDP response on bad commands (per D-07)
- Task 4 hardware checkpoint approved: zero flicker during 30s UDP burst test
- WIFI_PS_NONE confirmed working on ESP32-C3 SuperMini
- GPIO3/6/7 pin assignments validated on physical hardware
- Updated SUMMARY.md with hardware test result and plan completion
- STATE.md advanced to plan 3, progress bar updated to 25%
- main.cpp: setup() initializes strips, shows green (connecting) then white (connected)
- esp_wifi_set_ps(WIFI_PS_NONE) called immediately after WiFi connects for RMT coexistence
- loop() toggles LED colors every 5s to confirm strip responsiveness
- Coexistence test procedure documented as comment block in main.cpp
- firmware/.gitignore excludes .pio/ and credentials.h
- platformio.ini with -DESP32_ARDUINO_NO_RGB_BUILTIN, NeoPixelBus ^2.8.0, ArduinoJson ^7.4.0
- config.h defines all pin, LED count, brightness, timing, and FreeRTOS constants
