feat: Bootstrap 5 block renderer, widget cards, and sidebar post layout (v1.1.0)

Add BlockRenderer class injecting Bootstrap classes into 8 core block types
(table, button, buttons, image, search, quote, pullquote, list) via per-block
render_block filters using WP_HTML_Tag_Processor.

Add WidgetRenderer class wrapping sidebar widgets in Bootstrap card components
with h4 heading hierarchy via dynamic_sidebar_params and widget_block_content
filters.

Add widget SCSS stylesheet for list styling, search input-group, tag cloud
pills, and card-flush list positioning.

Add single-sidebar.html.twig as the default post template with two-column
Bootstrap layout (col-lg-8 content, col-lg-4 sidebar). Full-width available
via template selection.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CHANGELOG.md

@@ -2,6 +2,31 @@
 
 All notable changes to this project will be documented in this file.
 
+## [1.1.0] - 2026-02-28
+
+### Added
+
+- **Block Renderer** (`inc/Block/BlockRenderer.php`): New class that injects Bootstrap 5 classes into WordPress core block HTML output on the frontend via per-block `render_block_{$name}` filters. Handles 8 block types:
+  - `core/table` — `.table` on `<table>`, `.table-striped` when stripes style is active
+  - `core/button` — `.btn` + `.btn-{variant}` or `.btn-outline-{variant}` mapped from WP preset color slugs
+  - `core/buttons` — `.d-flex .flex-wrap .gap-2` on button group wrapper
+  - `core/image` — `.img-fluid` on `<img>` for responsive images
+  - `core/search` — `.input-group` on inner wrapper, `.form-control` on input, `.btn .btn-primary` on button
+  - `core/quote` — `.blockquote` on `<blockquote>`, `.blockquote-footer` on `<cite>`
+  - `core/pullquote` — Same blockquote treatment inside `<figure>`
+  - `core/list` — `.list-group` + `.list-group-item` when `is-style-list-group` block style is selected
+- **Widget Renderer** (`inc/Block/WidgetRenderer.php`): New class that transforms sidebar widgets into Bootstrap 5 card components via `dynamic_sidebar_params` and `widget_block_content` filters. Wraps each widget in a `.card > .card-body` structure with `.card-title` headings. Downgrades block widget `<h2>` headings to `<h4>` for proper sidebar visual hierarchy.
+- **Widget SCSS** (`src/scss/_widgets.scss`): New stylesheet for sidebar widget Bootstrap styling — list-group-style list items with border separators, flush-to-card-edge list positioning, Bootstrap form-control styling for select dropdowns, search form input-group layout, tag cloud with pill badges, and secondary-color post dates.
+- **List Group block style**: New "List Group" style registered for `core/list` blocks — applies Bootstrap `.list-group` and `.list-group-item` classes when selected in the editor.
+- **Single post sidebar template** (`views/pages/single-sidebar.html.twig`): New two-column layout for blog posts with `col-lg-8` content area and `col-lg-4` sidebar. Includes all single post features (meta, thumbnail, tags, post navigation, comments, more posts). "More posts" section uses `row-cols-md-2` to fit the narrower column.
+- **Extensibility**: `wp_bootstrap_block_renderer_blocks` filter allows child themes to add/remove block handler mappings.
+
+### Changed
+
+- **Post template default** (`inc/Template/TemplateController.php`): Blog posts now render with the sidebar layout by default (`single-sidebar.html.twig`). Posts assigned the "Full Width" template use `single.html.twig` instead. Template selection uses `get_page_template_slug()` with a `match` expression.
+- **Sidebar data for posts** (`inc/Template/ContextBuilder.php`): Posts always receive sidebar data (recent posts, tags, widgets) regardless of template selection, ensuring the sidebar partial always has data available.
+- **Widget SCSS import** (`src/scss/style.scss`): Added `_widgets` partial import between Bootstrap Icons and custom styles.
+
 ## [1.0.12] - 2026-02-28
 
 ### Fixed