Initial theme scaffolding (v0.0.1)

- Bootstrap 5 CSS/JS integration via Yarn (served locally)
- Dart Sass build pipeline with PostCSS, Autoprefixer, cssnano
- Twig 3.0 via Composer with PSR-4 autoloading
- FSE block theme templates (index, home, single, page, archive, search, 404)
- Template parts (header, footer) and block patterns
- theme.json with Bootstrap 5-aligned design tokens
- Gitea CI/CD workflow for automated release packages
- WordPress i18n support (en_US base, de_CH translation)

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

src/scss/editor-style.scss

@@ -0,0 +1,23 @@
+/*!
+ * WP Bootstrap Theme - Editor Styles
+ */
+
+// Import Bootstrap functions and variables for consistency
+@import "bootstrap/scss/functions";
+@import "variables";
+@import "bootstrap/scss/variables";
+@import "bootstrap/scss/variables-dark";
+@import "bootstrap/scss/maps";
+@import "bootstrap/scss/mixins";
+@import "bootstrap/scss/root";
+
+// Editor-specific adjustments
+.editor-styles-wrapper {
+    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
+    line-height: 1.5;
+
+    a {
+        text-decoration-thickness: 1px !important;
+        text-underline-offset: 0.1em;
+    }
+}