fix: Remove hidden attributes from h-app microformat

h-app was invisible to IndieAuth parsers due to hidden and
aria-hidden attributes, preventing proper client discovery.

- Remove hidden and aria-hidden="true" from h-app div
- Update version to 0.7.1
- Update CHANGELOG with fix details

This provides backward compatibility for IndieAuth services
that rely on h-app microformat parsing.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

CHANGELOG.md

@@ -7,6 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.7.1] - 2025-11-19
+
+### Fixed
+- **IndieAuth h-app Visibility**: Removed `hidden` and `aria-hidden="true"` attributes from h-app microformat markup
+  - h-app was invisible to IndieAuth parsers, preventing proper client discovery
+  - Now visible in DOM for microformat parsers while remaining non-intrusive in footer
+  - Provides backward compatibility for IndieAuth services that rely on h-app parsing
+
 ## [0.7.0] - 2025-11-19
 
 ### Added