Update documentation for v0.1.0 release

- README: document rendering bridge architecture, template coverage,
  directory structure, and how the interception pipeline works
- CHANGELOG: comprehensive list of all features added across phases 1-9
- PLAN: update dependencies to reflect completed bridge implementation

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

README.md

@@ -8,6 +8,7 @@ A WordPress child theme of [WP Bootstrap](https://src.bundespruefstelle.ch/magde
 - PHP 8.3+
 - [WP Bootstrap](https://src.bundespruefstelle.ch/magdev/wp-bootstrap) theme (parent)
 - [WooCommerce](https://github.com/woocommerce/woocommerce.git) plugin
+- Composer
 
 ## Installation
 
@@ -17,33 +18,83 @@ A WordPress child theme of [WP Bootstrap](https://src.bundespruefstelle.ch/magde
 4. Run `composer install` in the theme directory
 5. Activate the theme in WordPress Admin > Appearance > Themes
 
-## What This Theme Does
+## How It Works
 
-The WooCommerce plugin ships with its own Twig templates using custom CSS classes. This child theme overrides those templates to use Bootstrap 5 components, ensuring visual consistency with the WP Bootstrap parent theme.
+WooCommerce renders its pages using PHP templates loaded via `wc_get_template()`. This child theme intercepts that process with a **Twig rendering bridge** that replaces the PHP output with Bootstrap 5 styled Twig templates.
+
+The bridge hooks into WooCommerce's `woocommerce_before_template_part` and `woocommerce_after_template_part` actions. When a matching `.html.twig` template exists, it is rendered via the parent theme's TwigService and the original PHP output is discarded. If no Twig override exists, the default PHP template renders normally.
 
 ### Key Features
 
-- Bootstrap 5 markup for all plugin templates
-- Responsive design inheriting WP Bootstrap's grid system
-- Dark mode support via WP Bootstrap's theme toggle
+- **99 Twig template overrides** covering all customer-facing WooCommerce pages
+- **Rendering bridge** (`WooCommerceExtension` + `TemplateOverride`) that intercepts WooCommerce's PHP template pipeline
+- **~50 Twig functions** and **7 Twig filters** exposing WooCommerce and WordPress APIs to templates
+- Bootstrap 5 responsive markup with dark mode support
+- HPOS compatible (uses `WC_Order` methods only, no `$post` global)
+- 8 reusable Twig components (card, pagination, price, rating, address-card, status-badge, quantity-input, form-field)
 - Translation-ready
 
+### Template Coverage
+
+| Area | Templates | Status |
+| ---- | --------- | ------ |
+| Global & Notices | 9 | Done |
+| Product Archive & Loop | 15 | Done |
+| Single Product | 21 | Done |
+| Cart | 9 | Done |
+| Checkout | 12 | Done |
+| My Account | 15 | Done |
+| Order Details | 5 | Done |
+| Supplementary (Brands, Auth, Back-in-Stock) | 7 | Done |
+| Reusable Components | 8 | Done |
+| Emails | -- | Skipped (incompatible pipeline) |
+
 ## Development
 
 ### Directory Structure
 
 ```txt
 wc-bootstrap/
-├── assets/css/          # Custom CSS overrides
-├── assets/js/           # Custom JavaScript
-├── inc/                 # PHP classes (PSR-4)
-├── languages/           # Translation files
-├── templates/           # Bootstrap 5 Twig template overrides
+├── assets/
+│   ├── css/wc-bootstrap.css   # Bootstrap override styles
+│   └── js/quantity.js         # Quantity +/- button handler
+├── inc/
+│   ├── TemplateOverride.php   # WC template interception (before/after hooks)
+│   └── Twig/
+│       └── WooCommerceExtension.php  # WC/WP Twig functions & filters
+├── languages/                 # Translation files
+├── templates/                 # Bootstrap 5 Twig template overrides
+│   ├── archive-product.html.twig
+│   ├── auth/
+│   ├── brands/
+│   ├── cart/
+│   ├── checkout/
+│   ├── components/
+│   ├── global/
+│   ├── loop/
+│   ├── myaccount/
+│   ├── notices/
+│   ├── order/
+│   └── single-product/
 ├── composer.json
 ├── functions.php
 └── style.css
 ```
 
+### Architecture
+
+```txt
+WooCommerce wc_get_template("cart/cart.php")
+  → woocommerce_before_template_part hook
+    → TemplateOverride checks for cart/cart.html.twig
+    → Found → renders via TwigService (with WooCommerceExtension functions)
+    → Starts output buffer
+  → PHP include (captured in buffer)
+  → woocommerce_after_template_part hook
+    → TemplateOverride discards buffered PHP output
+  → Result: Bootstrap 5 Twig output only
+```
+
 ### Building Translations
 
 ```bash