feat: each loop, dreamstack init, expanded registry
Language:
- each item in list -> template (reactive list rendering)
- each/in tokens in lexer, Expr::Each in AST
- Reactive forEach codegen with scope push/pop
- Container trailing props: column [...] { variant: card }
CLI:
- dreamstack init [name] - scaffold new project
- Generates app.ds, components/, dreamstack.json
- 4 starter components (button, card, badge, input)
Registry expanded to 11 components:
- NEW: progress, alert, separator, toggle, avatar
- All embedded via include_str!
CSS: progress bar, avatar, separator, alert variants,
toggle switch, stat values (230+ lines design system)
Examples:
- each-demo.ds: list rendering demo
- dashboard.ds: glassmorphism cards with container variant
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