feat: add inject_css filter for styling feed content - #172
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Adds a new `inject_css` filter that prepends a <style> block to the
body of each post in a feed. This is useful for RSS readers that
render HTML content but don't provide styling control — users can
inject custom CSS to improve readability of specific feeds.
Configuration is a simple string value:
filters:
- inject_css: "body { max-width: 40em; font-size: 16px; }"
Follows the existing filter architecture: InjectCssConfig implements
FeedFilterConfig, InjectCss implements FeedFilter, registered via
define_filters! macro.
Closes #164
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Adds a new
inject_cssfilter that prepends a<style>block to the body of each post in a feed. Useful for RSS readers that render HTML content but don't provide styling control.Configuration:
Follows the existing filter architecture:
InjectCssConfigimplementsFeedFilterConfig,InjectCssimplementsFeedFilter, registered viadefine_filters!macro.Closes #164
(Split from #171 per maintainer feedback.)