Update admin theme/layout and refresh README details.

Align the project baseline with the latest admin interface styling and layout structure while documenting setup and usage updates in README.

.dockerignore

@@ -0,0 +1,27 @@
+# Git / editor noise
+.git
+.gitignore
+.cursor
+.vscode
+*.md
+
+# Dependencies & build artifacts (installed inside the image)
+**/node_modules
+**/dist
+**/coverage
+**/.turbo
+
+# Python API — not needed for the web image
+apps/api
+
+# Infra / CI helpers
+infra
+
+# Env & secrets (injected via compose or mounted at runtime)
+**/.env
+**/.env.*
+!**/.env.example
+
+# Test / e2e artifacts
+**/playwright-report
+**/test-results