v2.0.1: CI-Workflow + README mit Architektur-Diagramm

- .gitea/workflows/ci.yml: gitea-Actions-Workflow
  - Job 1 (test): npm ci + build + test auf Node 22
  - Job 2 (webapp): webapp-Build + Artifact-Verifikation
  - Trigger: push + pull_request auf main
- README.md komplett neu strukturiert:
  - Architektur-Diagramm (ASCII) mit allen 5 Bausteinen
  - 5-Bausteine-Tabelle mit Spalte 'Wo' (Tool/Vault/QMD)
  - Installations-Anleitung (Tool, Vault, QMD, Webapp)
  - Beispiel-Session end-to-end
  - Erweiterte CLI-Referenz mit allen Optionen
  - Test-Anleitung

.gitea/workflows/ci.yml

@@ -0,0 +1,51 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build
+        run: npm run build
+
+      - name: Tests
+        run: npm test
+
+  webapp:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+
+      - name: Install webapp dependencies
+        run: |
+          cd webapp
+          npm ci
+          npm run build
+
+      - name: Verify artifacts
+        run: |
+          test -f webapp/dist/index.html
+          test -f webapp/dist/manifest.webmanifest
+          echo "Webapp build artifacts present"