docs: Clean completed items from TODO

TODO.md

@@ -1,15 +1,6 @@
 # ESP32 Hacking TODO
 
-## Firmware Features
-- [x] UDP command listener (reboot, identify, status, rate, power)
-- [x] LED status indicator
-- [x] OTA firmware updates
-- [x] Adaptive sampling rate
-- [x] BLE scanning
-- [x] mDNS auto-discovery
-- [x] On-device wander calculation
-- [x] Configurable target IP/port via command (TARGET)
-- [x] PROFILE command (heap, stack, CPU stats)
+## Firmware
 - [ ] Chip temperature reporting
 - [ ] Sensor ID in data packets (hostname prefix on CSI_DATA/BLE_DATA)
 - [ ] WiFi probe request capture (PROBE_DATA via promiscuous mode)
@@ -17,10 +8,6 @@
 - [ ] On-device CSI processing (send metrics, not raw)
 
 ## Tools
-- [x] `esp-cmd` CLI tool to send commands to sensors
-- [x] `esp-fleet` parallel fleet management
-- [x] `esp-ota` OTA firmware update orchestration
-- [x] `esp-ctl` unified CLI (cmd, status, listen, serial, ble, target, profile)
 - [ ] Multi-sensor BLE correlation (tag by source sensor, zone tracking)
 - [ ] BLE alerting (known device list, alert on unknown MACs)
 - [ ] BLE dwell time tracking (loitering detection)
@@ -30,12 +17,10 @@
 ## Testing
 - [ ] Benchmark: CSI callback latency
 - [ ] Benchmark: UDP throughput at different rates
-- [x] Test: BLE + WiFi coexistence impact on CSI
 - [ ] Power consumption measurements (per-mode: idle, CSI, BLE, probe)
 
 ## Documentation
 - [ ] Pin mapping for ESP32-DevKitC V1
-- [x] Memory usage analysis (PROFILE command)
 - [ ] Compare CSI quality: passive (router) vs active (ESP-NOW)
 - [ ] Multi-sensor deployment guide (placement, zones, triangulation)