feat: Move to ESP-IDF framework

The ESP-IDF framework is smaller than the arduino framework, so has a
few features missing. But we now fit in memory again on ESPHome
2025.7.0+

Additionally:

- Add lefthook
- Add yamllint hook
- Lint files. We found a few bugs
- Add Taskfile for common tasks (run, compile logs)

Signed-off-by: Dan Webb <dan.webb@damacus.io>

Author: damacus

.github/workflows/lint.yaml

@@ -0,0 +1,18 @@
+---
+name: Lint
+on: [push, pull_request]
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.12'
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install yamllint
+      - name: Run yamllint
+        run: yamllint .

.gitignore

@@ -1 +1,2 @@
 .vscode
+.esphome_cache

.lefthook.yaml

@@ -0,0 +1,9 @@
+---
+assert_lefthook_installed: true
+skip_lfs: true
+
+pre-commit:
+  parallel: true
+  jobs:
+    - name: yamllint
+      run: yamllint .

.yamllint

@@ -0,0 +1,10 @@
+---
+extends: relaxed
+rules:
+  line-length:
+    max: 256
+    level: warning
+  document-start: disable
+ignore:
+  - ".esphome_cache/**"
+  - "esphome/.esphome/**"

Taskfile.yml

@@ -0,0 +1,90 @@
+---
+version: "3"
+
+vars:
+  CACHE_DIR: "{{.USER_WORKING_DIR}}/.esphome_cache"
+
+tasks:
+  default:
+    desc: List all tasks
+    cmd: task --list-all
+
+  setup-cache:
+    desc: Create cache directories if they don't exist
+    cmds:
+      - mkdir -p "{{.CACHE_DIR}}/pip"
+      - mkdir -p "{{.CACHE_DIR}}/platformio"
+    generates:
+      - "{{.CACHE_DIR}}/pip"
+      - "{{.CACHE_DIR}}/platformio"
+
+  compile:
+    desc: Compile the ESPHome config
+    deps: [setup-cache]
+    cmd: >-
+      docker run --rm
+      -v "$PWD/esphome:/config"
+      -v "{{.CACHE_DIR}}/pip:/root/.cache/pip"
+      -v "{{.CACHE_DIR}}/platformio:/root/.platformio"
+      -it esphome/esphome compile loopon_unity_esp_idf.yaml
+
+  flash:
+    desc: Flash the ESPHome firmware to the Unity sensor
+    deps: [setup-cache]
+    cmds:
+      - echo "Flashing firmware to Unity sensor..."
+      - >-
+        docker run --rm
+        -v "$PWD/esphome:/config"
+        -v "{{.CACHE_DIR}}/pip:/root/.cache/pip"
+        -v "{{.CACHE_DIR}}/platformio:/root/.platformio"
+        --privileged
+        --network host
+        -v /dev:/dev
+        -it esphome/esphome
+        upload loopon_unity_esp_idf.yaml --device /dev/cu.usbmodem2101
+
+  monitor:
+    desc: Monitor the ESPHome firmware serial output
+    deps: [setup-cache]
+    cmds:
+      - echo "Connecting to Unity sensor serial monitor..."
+      - >-
+        docker run --rm
+        -v "$PWD/esphome:/config"
+        -v "{{.CACHE_DIR}}/pip:/root/.cache/pip"
+        -v "{{.CACHE_DIR}}/platformio:/root/.platformio"
+        --privileged
+        -v /dev:/dev
+        -it esphome/esphome
+        logs loopon_unity_esp_idf.yaml
+
+  run:
+    desc: Run and watch the ESPHome firmware in real-time (upload + monitor)
+    deps: [setup-cache]
+    cmds:
+      - echo "Running Unity sensor firmware (uploading and monitoring)..."
+      - >-
+        docker run --rm
+        -v "$PWD/esphome:/config"
+        -v "{{.CACHE_DIR}}/pip:/root/.cache/pip"
+        -v "{{.CACHE_DIR}}/platformio:/root/.platformio"
+        --privileged
+        -v /dev/cu.usbmodem2101:/dev/cu.usbmodem2101
+        -it esphome/esphome
+        run loopon_unity_esp_idf.yaml --device /dev/cu.usbmodem2101
+
+  log:
+    desc: Alternative way to monitor logs (same as monitor task)
+    deps: [setup-cache]
+    cmds:
+      - echo "Connecting to Unity sensor logs..."
+      - >-
+        docker run --rm
+        -v "$PWD/esphome:/config"
+        -v "{{.CACHE_DIR}}/pip:/root/.cache/pip"
+        -v "{{.CACHE_DIR}}/platformio:/root/.platformio"
+        --privileged
+        -v /dev:/dev
+        -it esphome/esphome
+        logs loopon_unity_esp_idf.yaml