Introduce a FastHTML-style component model alongside the existing
function-based one, purely additive:
- Node: base renderable; __html__/__str__ render lazily so str()/f-string
composition keeps working during migration.
- Element: the single class for any HTML element (tag + attrs + children),
rendering via the existing memoized _render_element.
- Safe: wraps pre-rendered HTML (migration bridge for f-string components).
- Fragment: ordered children with no wrapper tag (replaces str(a)+str(b)).
- BaseComponent: base for higher-level components; render() returns a
subtree, media declared via a Media attribute.
- Media: declarative JS deps with order-preserving dedup merge.
- collect_media()/render() helpers walk the tree.
The legacy Component() function now builds an Element and is Node-aware in
its child handling, so a tree mixing string- and node-returning components
renders correctly with byte-identical output. No call sites changed yet.
https://claude.ai/code/session_01BKurBhE3Qj25p7Bfsg7EeK
Claude
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