Rename project to butterfly-edfa-rack; broaden descriptions beyond Koheron

The repo bridges both instruments (Koheron CTL200 seed + Agiltron M511
EDFA), so 'koheron-esp32-bridge' was too narrow. Align the repo name and
descriptions to the identifier the whole stack already uses
(butterfly_edfa_rack): README title, Makefile/platformio headers, and the
homeassistant/ copies. Device id, MQTT topics and entity ids are
unchanged, so no reflash or lost HA history. Sibling HA repo renamed to
butterfly-edfa-rack-homeassistant.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Makefile

@@ -1,4 +1,4 @@
-# Koheron CTL200 -> WiFi/MQTT bridge on ESP32.
+# Butterfly EDFA Rack bridge (Koheron CTL200 seed + Agiltron M511 EDFA) on ESP32.
 #
 # All commands run PlatformIO from the project-local venv, so you never need
 # `pio` on your PATH. Just `make`, `make upload`, `make monitor`.

README.md

@@ -1,4 +1,4 @@
-# koheron-esp32-bridge
+# butterfly-edfa-rack-firmware
 
 ESP32 firmware that bridges the **Butterfly EDFA Rack** — a 1550 nm MOPA: a [Koheron CTL200](https://www.koheron.com/photonics/ctl200-digital-laser-controller/) driving a DFB seed into an Agiltron M511 EYDFA power amplifier (output up to ~1 W / 30 dBm) — to WiFi/MQTT for monitoring and control from Home Assistant (broker `192.168.0.102:1883`, anonymous).
 

homeassistant/README.md

@@ -28,7 +28,7 @@ ssh $host 'docker exec homeassistant python -m homeassistant --script check_conf
 ssh $host 'docker restart homeassistant'
 ```
 
-The dashboard reloads on browser refresh; changes to `configuration.yaml`/`scripts.yaml` need the restart. The dashboard appears in the sidebar as **Butterfly Rack** (`/butterfly-rack`).
+The dashboard reloads on browser refresh; changes to `configuration.yaml`/`scripts.yaml` need the restart. The dashboard appears in the sidebar as **Butterfly EDFA Rack** (`/butterfly-rack`).
 
 ## Notes
 

homeassistant/configuration.snippet.yaml

@@ -49,7 +49,7 @@ lovelace:
   dashboards:
     butterfly-rack:
       mode: yaml
-      title: Butterfly Rack
+      title: Butterfly EDFA Rack
       icon: mdi:laser-pointer
       show_in_sidebar: true
       filename: ui-lovelace-butterfly.yaml

homeassistant/ui-lovelace-butterfly.yaml

@@ -10,7 +10,7 @@
 #                           stages, emergency stop. Everything you touch.
 #   Diagnostics & Trends  — the history graphs plus network / TEC / error
 #                           detail, kept off the control tab so it stays clean.
-title: Butterfly Rack
+title: Butterfly EDFA Rack
 views:
   # ===================================================================
   # TAB 1 — CONTROL PANEL

platformio.ini

@@ -1,4 +1,4 @@
-; PlatformIO project for the Koheron CTL200 -> WiFi/MQTT bridge on ESP32.
+; PlatformIO project for the Butterfly EDFA Rack bridge (Koheron seed + Agiltron M511 EDFA) on ESP32.
 ; Board: ESP32-D0WD-V3 (WROOM-32 class) on a CP2102N USB bridge.
 
 [env:esp32dev]