giles 3ba819d9ae HS parser/compiler/runtime: fix 8 parse errors, add/remove arrays, return guard ...

Parser:
- `add VALUE to :var` → (add-value) for array append
- `remove VALUE from :var` → (remove-value) for array removal
- `toggle .foo for 10ms` → (toggle-class-for) with duration
- `append VALUE` without `to` → implicit target (it)
- `set {obj} on target` → (set-on) for object property spread
- `repeat in` body: remove spurious nil (body at index 3→2)
- Keywords followed by `(` parsed as function calls (fixes `increment()`)

Compiler:
- Handle add-value, remove-value, toggle-class-for, set-on AST nodes
- Local variables (`set :var`) use `define` instead of `set!`

Runtime:
- hs-add-to!: append value to list
- hs-remove-from!: filter value from list
- hs-set-on!: spread dict properties onto target
- `as String` for lists: comma-join (JS Array.toString compat)

Tests:
- eval-hs/eval-hs-with-me: guard for hs-return exceptions
  (return compiles to raise, needs handler to extract value)

Parse errors: 20→12 (8 fixed). Remaining: 6 embedded HTML quotes
(tokenizer), 6 transition template values `(expr)px`.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-18 11:06:46 +00:00

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