Refactor CNC layout - extract individual plate parts into separate files with detailed features, individual SVG exports, and automated regeneration

.github/workflows/generate-cnclayout-svg.yml

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+name: Generate CNC Layout SVG
+
+on:
+  push:
+    branches: [ main, master ]
+    paths: 
+      - 'LifeTrac-v25/mechanical_design/cnclayout.scad'
+      - 'LifeTrac-v25/mechanical_design/parts/*.scad'
+      - 'LifeTrac-v25/mechanical_design/openscad/lifetrac_v25_params.scad'
+  pull_request:
+    branches: [ main, master ]
+    paths: 
+      - 'LifeTrac-v25/mechanical_design/cnclayout.scad'
+      - 'LifeTrac-v25/mechanical_design/parts/*.scad'
+      - 'LifeTrac-v25/mechanical_design/openscad/lifetrac_v25_params.scad'
+  workflow_dispatch:
+
+jobs:
+  generate-cnclayout:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: write
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        token: ${{ secrets.GITHUB_TOKEN }}
+        # Ensure the workflow checks out the PR branch (not the base branch) for pull_request events
+        ref: ${{ github.head_ref || github.ref_name }}
+
+    - name: Install OpenSCAD
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y openscad xvfb
+
+    - name: Generate Combined CNC Layout SVG
+      run: |
+        cd LifeTrac-v25/mechanical_design
+
+        echo "========================================="
+        echo "Generating Combined CNC Layout SVG"
+        echo "========================================="
+
+        # Use xvfb-run to provide a virtual display for OpenSCAD rendering
+        # For 2D projections, use top-down orthographic view
+        xvfb-run -a openscad --render \
+          --imgsize=4096,8192 \
+          --colorscheme=Tomorrow \
+          --projection=ortho \
+          --camera=0,0,0,0,0,0,3000 \
+          -o cnclayout.svg \
+          cnclayout.scad 2>&1 | grep -v "WARNING" || true
+
+        # Verify the SVG was created
+        if [ -f cnclayout.svg ]; then
+          echo "✅ Combined CNC Layout SVG generated successfully"
+          ls -lh cnclayout.svg
+          du -h cnclayout.svg
+
+          # Count paths/shapes in SVG as a sanity check
+          echo "Checking SVG content..."
+          path_count=$(grep -o "<path" cnclayout.svg | wc -l)
+          echo "Number of paths in SVG: ${path_count}"
+
+          if [ ${path_count} -gt 50 ]; then
+            echo "✅ SVG contains ${path_count} paths (expected 50+)"
+          else
+            echo "⚠️  SVG only contains ${path_count} paths - may be incomplete"
+          fi
+        else
+          echo "❌ Failed to generate Combined CNC Layout SVG"
+          exit 1
+        fi
+
+    - name: Update README with CNC layout SVG
+      run: |
+        cd LifeTrac-v25/mechanical_design
+
+        # Check if README already has CNC layout section
+        if ! grep -q "## CNC Cutting Layout" README.md; then
+          echo "Adding CNC layout section to README..."
+
+          cat >> README.md << 'EOF'
+
+## CNC Cutting Layout
+
+### Combined Layout (All Parts)
+![CNC Cutting Layout - All Parts](cnclayout.svg)
+
+The combined CNC layout includes all 23 sheet metal parts with complete manufacturing details:
+- Mounting holes with proper clearances
+- Pivot holes for arm and cylinder connections
+- Arc slots for cross beam clearance (inner panels)
+- Lightening holes for weight reduction
+- Anti-slip hole patterns (standing deck)
+- All parts properly spaced for efficient cutting
+
+**Material Specifications:**
+- Half-inch (1/2") plate parts: 14 parts total
+- Quarter-inch (1/4") plate parts: 9 parts total
+
+EOF
+          echo "✓ README updated with CNC layout section"
+        else
+          echo "ℹ️  README already has CNC layout section"
+        fi
+
+    - name: Commit and push if changed
+      run: |
+        cd LifeTrac-v25/mechanical_design
+        git config --local user.email "action@github.com"
+        git config --local user.name "GitHub Action"
+        git add cnclayout.svg README.md || true
+
+        if git diff --staged --quiet; then
+          echo "ℹ️  No changes to commit"
+        else
+          echo "📝 Committing changes..."
+          git commit -m "Update combined CNC layout SVG with detailed parts [skip ci]"
+          git push
+          echo "✅ Changes pushed successfully"
+        fi

.github/workflows/generate-part-svgs.yml

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+name: Generate Individual Part SVGs
+
+on:
+  push:
+    branches: [ main, master ]
+    paths: 
+      - 'LifeTrac-v25/mechanical_design/parts/*.scad'
+      - 'LifeTrac-v25/mechanical_design/openscad/lifetrac_v25_params.scad'
+  pull_request:
+    branches: [ main, master ]
+    paths: 
+      - 'LifeTrac-v25/mechanical_design/parts/*.scad'
+      - 'LifeTrac-v25/mechanical_design/openscad/lifetrac_v25_params.scad'
+  workflow_dispatch:
+
+jobs:
+  generate-svgs:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: write
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        token: ${{ secrets.GITHUB_TOKEN }}
+        ref: ${{ github.head_ref || github.ref_name }}
+
+    - name: Install OpenSCAD
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y openscad xvfb
+
+    - name: Generate Individual Part SVGs
+      run: |
+        cd LifeTrac-v25/mechanical_design
+        mkdir -p output/svg/parts
+
+        echo "========================================="
+        echo "Generating Individual Part SVG Cutouts"
+        echo "========================================="
+
+        # Function to export a part
+        export_part() {
+          local name=$1
+          local scad=$2
+          local svg=$3
+          echo "Exporting ${name}..."
+          xvfb-run -a openscad --render --export-format=svg -o "${svg}" "${scad}" 2>&1 | grep -v "WARNING" || true
+          if [ -f "${svg}" ]; then
+            echo "  ✓ ${name} exported"
+            ls -lh "${svg}"
+          else
+            echo "  ✗ Failed to export ${name}"
+          fi
+        }
+
+        # Export all parts
+        export_part "Side Panel Outer" \
+          "parts/export_side_panel_outer.scad" \
+          "output/svg/parts/side_panel_outer.svg"
+
+        export_part "Side Panel Inner" \
+          "parts/export_side_panel_inner.scad" \
+          "output/svg/parts/side_panel_inner.svg"
+
+        export_part "Wheel Mount" \
+          "parts/export_wheel_mount.scad" \
+          "output/svg/parts/wheel_mount.svg"
+
+        export_part "Cylinder Lug" \
+          "parts/export_cylinder_lug.scad" \
+          "output/svg/parts/cylinder_lug.svg"
+
+        export_part "Rear Crossmember" \
+          "parts/export_rear_crossmember.scad" \
+          "output/svg/parts/rear_crossmember.svg"
+
+        export_part "Standing Deck" \
+          "parts/export_standing_deck.scad" \
+          "output/svg/parts/standing_deck.svg"
+
+        export_part "Bucket Bottom" \
+          "parts/export_bucket_bottom.scad" \
+          "output/svg/parts/bucket_bottom.svg"
+
+        export_part "Bucket Side" \
+          "parts/export_bucket_side.scad" \
+          "output/svg/parts/bucket_side.svg"
+
+        echo "========================================="
+        echo "Export Complete!"
+        echo "========================================="
+        ls -lh output/svg/parts/
+
+    - name: Update README with part SVG links
+      run: |
+        cd LifeTrac-v25/mechanical_design
+
+        # Check if README already has part SVG section
+        if ! grep -q "Individual Part SVGs" README.md; then
+          echo "Adding Individual Part SVG section to README..."
+
+          cat >> README.md << 'EOF'
+
+## Individual Part SVGs
+
+2D CNC cutting layouts for each individual plate part:
+
+### Half-Inch (1/2") Plate Parts
+- [Side Panel Outer](output/svg/parts/side_panel_outer.svg) - 2× needed
+- [Side Panel Inner](output/svg/parts/side_panel_inner.svg) - 2× needed
+- [Wheel Mount](output/svg/parts/wheel_mount.svg) - 4× needed
+- [Cylinder Lug](output/svg/parts/cylinder_lug.svg) - 6× needed
+- [Rear Crossmember](output/svg/parts/rear_crossmember.svg) - 1× needed
+
+### Quarter-Inch (1/4") Plate Parts
+- [Standing Deck](output/svg/parts/standing_deck.svg) - 1× needed
+- [Bucket Bottom](output/svg/parts/bucket_bottom.svg) - 1× needed
+- [Bucket Side](output/svg/parts/bucket_side.svg) - 2× needed (mirror for opposite)
+
+Total: 23 parts from 8 unique designs
+EOF
+          echo "✓ README updated with part SVG links"
+        else
+          echo "ℹ️  README already has part SVG section"
+        fi
+
+    - name: Commit and push if changed
+      run: |
+        cd LifeTrac-v25/mechanical_design
+        git config --local user.email "action@github.com"
+        git config --local user.name "GitHub Action"
+        git add output/svg/parts/*.svg README.md || true
+
+        if git diff --staged --quiet; then
+          echo "ℹ️  No changes to commit"
+        else
+          echo "📝 Committing changes..."
+          git commit -m "Update individual part SVG cutouts [skip ci]"
+          git push
+          echo "✅ Changes pushed successfully"
+        fi

LifeTrac-v25/mechanical_design/CNCLAYOUT_PARTS_LIST.md

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+# LifeTrac v25 CNC Layout - Parts List
+
+## Overview
+The cnclayout.svg file contains all sheet metal parts for plasma cutting in the LifeTrac v25 design. This document lists all parts included in the layout.
+
+## Parts Included (23 total parts)
+
+### Frame Components (Half-inch plate, 1/2" = 12.7mm)
+
+#### Triangular Side Panels (4 parts - Sandwich Design)
+- **A1-L-Outer** - Left Outer Side Panel (1000mm × 1400mm)
+- **A1-L-Inner** - Left Inner Side Panel (1000mm × 1400mm)
+- **A1-R-Inner** - Right Inner Side Panel (1000mm × 1400mm)
+- **A1-R-Outer** - Right Outer Side Panel (1000mm × 1400mm)
+
+Note: These four panels form a sandwich structure with 100mm spacing. The loader arm pivots between the inner pair.
+
+#### Wheel Mounts (4 parts)
+- **A4-1** - Wheel Mount Front Left (250mm × 250mm)
+- **A4-2** - Wheel Mount Front Right (250mm × 250mm)
+- **A4-3** - Wheel Mount Rear Left (250mm × 250mm)
+- **A4-4** - Wheel Mount Rear Right (250mm × 250mm)
+
+#### Hydraulic Cylinder Mounts (4 parts)
+- **A5-L** - Lift Cylinder Mount Left (100mm × 150mm)
+- **A5-R** - Lift Cylinder Mount Right (100mm × 150mm)
+- **Bucket Cyl Lug 1** - Bucket Cylinder Lug (100mm × 150mm)
+- **Bucket Cyl Lug 2** - Bucket Cylinder Lug (100mm × 150mm)
+
+#### Bucket Attachment Points (2 parts)
+- **C2-1** - Bucket Attach Left (200mm × 200mm)
+- **C2-2** - Bucket Attach Right (200mm × 200mm)
+
+### Structural Components (Quarter-inch plate, 1/4" = 6.35mm)
+
+#### Frame Crossmember (1 part)
+- **A2** - Rear Crossmember (1100mm × 600mm)
+
+#### Loader Arm Components (2 parts)
+- **C1-1** - Arm Reinforcement Left (150mm × 1200mm)
+- **C1-2** - Arm Reinforcement Right (150mm × 1200mm)
+
+#### Bucket Components (4 parts)
+- **E1-1** - Bucket Bottom (1100mm × 600mm)
+- **E1-2** - Bucket Back (1100mm × 400mm)
+- **E1-3** - Bucket Side Left (600mm × 400mm)
+- **E1-4** - Bucket Side Right (600mm × 400mm)
+
+#### Operator Platform (1 part)
+- **F1** - Standing Deck (1000mm × 400mm)
+
+#### Control Housing (1 part)
+- **G1** - Housing Base (300mm × 200mm)
+
+## Material Specifications
+
+### Half-inch Plate (12.7mm thick) - Red in layout
+- 4× Triangular side panels (main structural frame)
+- 4× Wheel mount plates
+- 4× Hydraulic cylinder mounts
+- 2× Bucket attachment plates
+- **Total: 14 parts**
+
+### Quarter-inch Plate (6.35mm thick) - Blue in layout
+- 1× Rear crossmember
+- 2× Arm reinforcements
+- 4× Bucket panels
+- 1× Standing deck
+- 1× Housing base
+- **Total: 9 parts**
+
+## Cutting Specifications
+- All corners have 6.35mm (1/4") radius
+- Maintain 3mm spacing between cuts
+- Layout optimized for minimal material waste
+- Total layout size: 2019mm × 6867mm
+
+## Design Notes
+- The four triangular panels create a unique "sandwich" design where:
+  - Outer panels provide main structural support
+  - Inner panels are sandwiched 100mm from outer panels
+  - Loader arm pivots between the inner pair of panels
+- All parts designed for CNC plasma cutting
+- Rounded corners reduce stress concentrations
+
+## Code Improvements
+The cnclayout.scad source file was updated to improve code quality and maintainability:
+1. Simplified geometry generation by replacing 3D projection() calls with direct 2D geometry (offset + square)
+2. Improved code clarity - easier to understand and modify
+3. Slightly more precise corner calculations
+4. Regenerated the SVG file with the improved code
+
+All 23 parts were already present and are correctly rendered in the SVG file.