add automated relay count tracking with dual trend charts (#8)

* Add relay count tracking workflow with dual charts

This commit adds:
- New GitHub workflow to track relay counts
- Two charts: BitChat-compatible relays and total functioning relays
- Extended history for both charts (70 days)
- Project structure improvements with scripts and assets directories
- Updated documentation in README.md and other files
- Dependencies in requirements.txt

* Remove overlapping data point labels from relay count charts

* Add .venv to gitignore

* Add relay location maps and automation workflow

* Improve relay maps with proper world map backgrounds using cartopy

* Add relay location map to README

* update readme

.github/workflows/relay-count-tracker.yml

@@ -0,0 +1,64 @@
+name: Track Relay Count Changes
+
+on:
+  # Run after the "Update Relay Data" workflow completes
+  workflow_run:
+    workflows: ["Update Relay Data"]
+    types:
+      - completed
+  # Also allow manual triggering
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  track-relay-count:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'success' || github.event_name == 'workflow_dispatch' }}
+    
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 100  # Need deeper history to check previous commits (70+ days)
+    
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.x'
+    
+    - name: Install Python dependencies
+      run: |
+        python -m pip install --upgrade pip
+        # Check if requirements.txt includes matplotlib, pandas, numpy
+        if ! grep -q "matplotlib\|pandas\|numpy" requirements.txt; then
+          # If not, install them directly
+          pip install matplotlib pandas numpy
+        else
+          # Otherwise use the requirements file
+          pip install -r requirements.txt
+        fi
+    
+    - name: Track relay count changes
+      run: |
+        mkdir -p assets
+        
+        # Execute the script
+        python scripts/track_relay_counts.py
+    
+    - name: Check for changes
+      id: git-check
+      run: |
+        git add assets/bitchat_relay_count_chart.png assets/total_relay_count_chart.png
+        git diff --staged --exit-code || echo "changes=true" >> $GITHUB_OUTPUT
+    
+    - name: Commit and push changes
+      if: steps.git-check.outputs.changes == 'true'
+      run: |
+        git config --local user.email "action@github.com"
+        git config --local user.name "GitHub Action"
+        git commit -m "Update relay count charts - $(date -u)"
+        git push
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/relay-maps.yml

@@ -0,0 +1,61 @@
+name: Update Relay Maps
+
+on:
+  # Run after the "Update Relay Data" workflow completes
+  workflow_run:
+    workflows: ["Update Relay Data"]
+    types:
+      - completed
+  # Also allow manual triggering
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  update-relay-maps:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'success' || github.event_name == 'workflow_dispatch' }}
+    
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 100  # Need deeper history
+    
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.x'
+    
+    - name: Install Python dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install matplotlib pandas numpy folium scipy
+        # Install cartopy and its dependencies
+        sudo apt-get update
+        sudo apt-get install -y libproj-dev proj-bin proj-data libgeos-dev
+        pip install cartopy
+    
+    - name: Generate relay maps
+      run: |
+        mkdir -p assets
+        
+        # Execute the script
+        python scripts/generate_relay_map.py
+    
+    - name: Check for changes
+      id: git-check
+      run: |
+        git add assets/relay_locations_static.png assets/relay_locations_heatmap.png assets/relay_locations_interactive.html
+        git diff --staged --exit-code || echo "changes=true" >> $GITHUB_OUTPUT
+    
+    - name: Commit and push changes
+      if: steps.git-check.outputs.changes == 'true'
+      run: |
+        git config --local user.email "action@github.com"
+        git config --local user.name "GitHub Action"
+        git commit -m "Update relay location maps - $(date -u)"
+        git push
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}