[rayliverified]

Requested by Ray · project thread

Before: text and action values could only insert variables, not compute anything (no prices, totals or plurals). Fill, opacity and size couldn't follow variables. Apps couldn't show a confirmation message. Screen readers announced tappable frames and icon buttons as nothing at all, and offered a long press that did nothing.

After:

• ${= expression} formulas work in any text, bound property, condition or action value, e.g. ${= money(sum(storage.cart, 'total'))}. A value that is exactly one formula keeps its type, lists and maps included.
• Fill, stroke, opacity, width and height follow bound formulas at runtime.
• The show toast action shows a message near the bottom of the app.
• A tappable node reads as a button. One without text is named after its node, or its icon when the node keeps a default name.

How:

• A small expression parser and evaluator, plus style overrides applied before each node builds.
• An overlay-based toast.
• MergeSemantics + Semantics(button: true) around tappable nodes. Long press is registered only when a long-press action exists.
• Tests: formula_test, style_overrides_test, toast_test and semantics_test.

Known issues: pubspec.yaml and example/pubspec.yaml temporarily override codelessly_api with the branch of Codelessly/CodelesslyAPI#37, which adds the toast action. Remove the override once that API release is published.

---

Generated by Claude Code