feat: add real Stripe integration, e2e tests, and Pi deployment

Replace documentation-only repo with working code:

- Stripe integration: webhook handler (8 event types), billing API
  (customers, checkout, payments, subscriptions, invoices)
- Express API server with health endpoint, structured logging
- E2E tests (Playwright): health, webhook signature verification,
  billing API validation
- Unit tests: webhook event handler coverage for all event types
- Pi deployment: deploy.sh (rsync + systemd), NGINX load balancer
  across Pi cluster, Docker support
- CI/CD: test workflow, Pi deploy workflow, updated auto-deploy
  and self-healing to run real tests before deploying
- Move resume docs to docs/ to separate code from documentation

https://claude.ai/code/session_01Mf5Pg82fV6BTRS9GnpV7nr

.github/workflows/self-healing.yml

@@ -1,78 +1,73 @@
-name: 🔧 Self-Healing
+name: Self-Healing
 
 on:
   schedule:
-    - cron: '*/30 * * * *'  # Every 30 minutes
+    - cron: '*/30 * * * *'
   workflow_dispatch:
   workflow_run:
-    workflows: ["🚀 Auto Deploy"]
+    workflows: ["Auto Deploy"]
     types: [completed]
 
 jobs:
   monitor:
     name: Monitor Deployments
     runs-on: ubuntu-latest
-    
+
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-      
+      - uses: actions/checkout@v4
+
       - name: Check Health
         id: health
         run: |
-          if [ ! -z "${{ secrets.DEPLOY_URL }}" ]; then
-            STATUS=$(curl -s -o /dev/null -w "%{http_code}" ${{ secrets.DEPLOY_URL }}/api/health || echo "000")
+          if [ -n "${{ secrets.DEPLOY_URL }}" ]; then
+            STATUS=$(curl -s -o /dev/null -w "%{http_code}" "${{ secrets.DEPLOY_URL }}/api/health" || echo "000")
             echo "status=$STATUS" >> $GITHUB_OUTPUT
           else
             echo "status=skip" >> $GITHUB_OUTPUT
           fi
-      
+
       - name: Auto-Rollback
         if: steps.health.outputs.status != '200' && steps.health.outputs.status != 'skip'
         run: |
-          echo "🚨 Health check failed (Status: ${{ steps.health.outputs.status }})"
+          echo "Health check failed (Status: ${{ steps.health.outputs.status }})"
           echo "Triggering rollback..."
-          gh workflow run auto-deploy.yml --ref $(git rev-parse HEAD~1)
+          gh workflow run auto-deploy.yml --ref $(git rev-parse HEAD~1) || true
         env:
           GH_TOKEN: ${{ github.token }}
-      
-      - name: Attempt Auto-Fix
-        if: steps.health.outputs.status != '200' && steps.health.outputs.status != 'skip'
-        run: |
-          echo "🔧 Attempting automatic fixes..."
-          # Check for common issues
-          if [ -f "package.json" ]; then
-            npm ci || true
-            npm run build || true
-          fi
-      
+
       - name: Create Issue on Failure
-        if: failure()
+        if: steps.health.outputs.status != '200' && steps.health.outputs.status != 'skip'
         uses: actions/github-script@v7
         with:
           script: |
-            github.rest.issues.create({
+            const issues = await github.rest.issues.listForRepo({
               owner: context.repo.owner,
               repo: context.repo.repo,
-              title: '🚨 Self-Healing: Deployment Health Check Failed',
-              body: `Deployment health check failed.\n\nStatus: ${{ steps.health.outputs.status }}\nWorkflow: ${context.workflow}\nRun: ${context.runId}`,
-              labels: ['bug', 'deployment', 'auto-generated']
-            })
+              labels: 'deployment,auto-generated',
+              state: 'open',
+            });
+            if (issues.data.length < 3) {
+              github.rest.issues.create({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                title: 'Self-Healing: Health Check Failed (Status: ${{ steps.health.outputs.status }})',
+                body: `Health check failed.\n\nStatus: ${{ steps.health.outputs.status }}\nWorkflow: ${context.workflow}\nRun: ${context.runId}\nTimestamp: ${new Date().toISOString()}`,
+                labels: ['bug', 'deployment', 'auto-generated']
+              });
+            }
 
   dependency-updates:
     name: Auto Update Dependencies
     runs-on: ubuntu-latest
-    
+
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-      
-      - name: Setup Node
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
         if: hashFiles('package.json') != ''
-        uses: actions/setup-node@v4
         with:
           node-version: '20'
-      
+
       - name: Update npm dependencies
         if: hashFiles('package.json') != ''
         run: |