v1.0.1

Documentation overhaul (TESTING/CONTRIBUTING/ARCHITECTURE/SECURITY/CLAUDE.md,
CHANGELOG.md, drop unmaintained src/README.md) plus CI-built Docker images:
Gitea Actions now builds and pushes the servicedesk image to the Gitea
container registry on Dockerfile changes, and compose.yaml pulls that image
instead of building locally. No application behavior changes.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

.gitea/workflows/build.yml

@@ -0,0 +1,42 @@
+name: Build and push image
+
+# The app image only provides PHP/Apache/extensions — application code is bind-
+# mounted from ./src at deploy time (see compose.yaml), so this only needs to
+# run when the image definition itself changes, not on every app code change.
+on:
+  push:
+    branches: [main]
+    paths:
+      - Dockerfile
+      - .gitea/workflows/build.yml
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Gitea container registry
+        uses: docker/login-action@v3
+        with:
+          registry: gitea.kzbikowski.pl
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: |
+            gitea.kzbikowski.pl/kzbkowski/servicedesk:latest
+            gitea.kzbikowski.pl/kzbkowski/servicedesk:${{ github.sha }}