Adds workflows

Author: cgreening

.github/workflows/firmware.yml

@@ -0,0 +1,55 @@
+name: Firmware CI
+
+on:
+  push:
+    branches: [ main, develop ]
+    paths: 
+      - 'firmware/**'
+      - '.github/workflows/firmware.yml'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'firmware/**'
+      - '.github/workflows/firmware.yml'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Cache pip
+      uses: actions/cache@v4
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-
+    
+    - name: Cache PlatformIO
+      uses: actions/cache@v4
+      with:
+        path: ~/.platformio
+        key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
+    
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.9'
+    
+    - name: Install PlatformIO
+      run: |
+        python -m pip install --upgrade pip
+        pip install --upgrade platformio
+        
+    - name: Build firmware
+      working-directory: ./firmware
+      run: pio run
+      
+    - name: Upload firmware artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: firmware-build
+        path: firmware/.pio/build/
+        retention-days: 7

.github/workflows/frontend.yml

@@ -0,0 +1,50 @@
+name: Frontend CI
+
+on:
+  push:
+    branches: [ main, develop ]
+    paths: 
+      - 'frontend/**'
+      - '.github/workflows/frontend.yml'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'frontend/**'
+      - '.github/workflows/frontend.yml'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Setup Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '18'
+        cache: 'npm'
+        cache-dependency-path: frontend/package-lock.json
+        
+    - name: Install dependencies
+      working-directory: ./frontend
+      run: npm ci
+      
+    - name: Run TypeScript check
+      working-directory: ./frontend
+      run: npm run type-check
+      
+    - name: Run linter
+      working-directory: ./frontend
+      run: npm run lint
+      
+    - name: Build project
+      working-directory: ./frontend
+      run: npm run build
+      
+    - name: Upload build artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: frontend-build
+        path: frontend/dist/
+        retention-days: 7

README.md

@@ -2,6 +2,8 @@
 
 A complete hardware + software solution for real-time 3D accelerometer visualization. This project combines an ESP32S3 microcontroller with LSM6DS3 accelerometer and a sophisticated web-based 3D visualization frontend.
 
+![Demo](images/demo.png)
+
 ## Overview
 
 - **Hardware**: ESP32S3 + LSM6DS3 accelerometer with I2C communication