Add GH workflow for running analysis (#18)

Proof-of-concept: can we schedule weekly analysis on GitHub actions? This adds a manually-runnable action to do the analysis and save results as an artifact. It doesn’t (yet?) upload the results to Google Drive.

Author: Mr0grog

.editorconfig

@@ -6,3 +6,6 @@ trim_trailing_whitespace = true
 
 [*.js]
 indent_size = 2
+
+[*.yml]
+indent_size = 2

.github/workflows/analyze.yml

@@ -0,0 +1,88 @@
+name: Analyze
+
+env:
+  TEST_PATTERN: '*justice.gov/*'
+
+on:
+  pull_request: {}
+  workflow_dispatch:
+    inputs:
+      threshold:
+        description: 'Threshold'
+        required: false
+        type: string
+      pattern:
+        description: 'Pattern'
+        required: false
+        type: string
+        default: ''
+      from:
+        description: 'From Time'
+        required: false
+        type: string
+        default: ''
+      to:
+        description: 'To Time'
+        required: false
+        type: string
+        default: ''
+
+jobs:
+  analyze:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.10'
+          cache: pip
+
+      - name: Install System Dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends \
+            gcc g++ pkg-config libxml2-dev libxslt-dev libz-dev
+
+      - name: Install Python Dependencies
+        run: pip install -r requirements.txt
+
+      - name: Download NLTK Corpora
+        run: |
+          python -m nltk.downloader stopwords
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+          cache-dependency-path: readability-server/package-lock.json
+
+      - name: Install readability-server dependencies
+        run: |
+          cd readability-server
+          npm ci
+
+      - name: Run readability-server
+        run: |
+          cd readability-server
+          npm start &
+
+      - name: Analyze!
+        env:
+          WEB_MONITORING_DB_URL: '${{ secrets.WEB_MONITORING_DB_URL }}'
+        run: |
+          python generate_task_sheets.py \
+            --output out \
+            --after '${{ inputs.from || '240' }}' \
+            --before '${{ inputs.to || '0' }}' \
+            --threshold '${{ inputs.threshold || '0.25' }}' \
+            --pattern '${{ inputs.pattern || env.TEST_PATTERN }}'
+
+      - name: Upload Results
+        uses: actions/upload-artifact@v4
+        with:
+          name: output
+          path: out
+          if-no-files-found: error
+          # TODO: what's appropriate retention here?
+          # retention-days: 1