Prepare v0.1.1 bugfix release

Update CHANGELOG.md with v0.1.1 entry (dark mode selects, notice
styling, product card overflow). Bump version in style.css. Document
CSS specificity learnings in CLAUDE.md. Update README release example.

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

CHANGELOG.md

@@ -2,6 +2,18 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.1.1] - 2026-02-28
+
+### Fixed
+
+- Dark mode: native `<select>` elements showing white background due to WooCommerce's `--wc-form-color-background` falling back to `#fff`
+- Dark mode: SelectWoo/Select2 dropdowns (country/state pickers) rendering with hardcoded `#fff` backgrounds, text colors, and borders
+- Dark mode: checkout form focus ring color for inputs, textareas, and selects
+- WooCommerce notice borders not matching Bootstrap alert styles due to insufficient CSS specificity (bumped to `.woocommerce .woocommerce-*` at `0,2,0`)
+- WooCommerce notice `border-top: 3px solid` and `background-color: #f6f5f8` overriding Bootstrap alert colors
+- Double icons on WooCommerce notices (WooCommerce icon font `::before` conflicting with Bootstrap Icons)
+- Product card images overlapping top rounded corners on catalog page (added `overflow-hidden` to card)
+
 ## [0.1.0] - 2026-02-28
 
 ### Added