feat: rebuild mintel.me as a single-page freelance site

The site now presents one freelance developer on one page: hero, introduction,
four typical cases (developer for a product, make an app reliable, automate a
process, a website) with what you get, how it runs and what it costs, a
process automation section, technology and project fit, how I work, two live
references, questions and contact.

- Hero and closing headline are drawn from running binary digits.
- Each case explains its four steps with an animated drawing; the automation
  section shows example workflows with work travelling between systems; a
  pipeline run shows what a test catches before a release.
- Contact is one email address, kept in parts and assembled in the browser so
  it never appears in the page source (src/domain/email.ts, spec first).
- Imprint and privacy pages added.
- The old site (blog, case studies, contact form, fixed-price pages, video
  rendering and related scripts) is removed. Its URLs redirect to the homepage.
- The deploy smoke test checks the legal pages and the redirects instead of
  the removed case study.
- Dev scripts use docker compose v2.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -472,36 +472,30 @@ jobs:
             exit 1
           fi
 
-      - name: 🌐 Check Case Study Assets and Rewrites
+      - name: 🌐 Check Legal Pages and Old URLs
         shell: sh
         run: |
           BASE_URL="${{ needs.prepare.outputs.next_public_url }}"
 
-          echo "Verifying case study page..."
-          STATUS=$(curl -s -o /dev/null -w "%{http_code}" "$BASE_URL/case-studies/klz-cables")
-          if [ "$STATUS" != "200" ]; then
-            echo "❌ Case study page failed! (Status: $STATUS)"
-            exit 1
-          fi
-          echo "✅ Case study page UP"
+          # The legal pages must be reachable.
+          for PAGE in /imprint /privacy; do
+            STATUS=$(curl -s -o /dev/null -w "%{http_code}" "$BASE_URL$PAGE")
+            if [ "$STATUS" != "200" ]; then
+              echo "❌ $PAGE failed! (Status: $STATUS)"
+              exit 1
+            fi
+            echo "✅ $PAGE OK"
+          done
 
-          echo "Verifying breeze CSS (root path)..."
-          CSS_PATH="/assets/klz-cables.com/wp-content/cache/breeze-minification/css/breeze_klz-cables-com-1-10895.css"
-          STATUS=$(curl -s -o /dev/null -w "%{http_code}" "$BASE_URL$CSS_PATH")
-          if [ "$STATUS" != "200" ]; then
-            echo "❌ Root asset path failed! (Status: $STATUS)"
-            exit 1
-          fi
-          echo "✅ Root asset path OK"
-
-          echo "Verifying breeze CSS (relative path from case-study)..."
-          REL_CSS_PATH="/case-studies/assets/klz-cables.com/wp-content/cache/breeze-minification/css/breeze_klz-cables-com-1-10895.css"
-          STATUS=$(curl -s -o /dev/null -w "%{http_code}" "$BASE_URL$REL_CSS_PATH")
-          if [ "$STATUS" != "200" ]; then
-            echo "❌ Relative asset path failed! (Status: $STATUS)"
-            exit 1
-          fi
-          echo "✅ Relative asset path OK"
+          # URLs of the previous site must redirect instead of returning 404.
+          for OLD in /blog /contact /websites /case-studies/klz-cables /impressum; do
+            STATUS=$(curl -s -o /dev/null -w "%{http_code}" "$BASE_URL$OLD")
+            if [ "$STATUS" != "308" ]; then
+              echo "❌ $OLD does not redirect! (Status: $STATUS)"
+              exit 1
+            fi
+            echo "✅ $OLD redirects"
+          done
 
   # ──────────────────────────────────────────────────────────────────────────────
   # JOB 6: Notifications