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feat(ui): popovers, tooltips, progress; the render3d backend installs itself; duplicate names caught first

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- `popover`: a top layer that keeps the pointer and the keyboard, closed by a press outside or Esc.
- `title` tooltips after half a second's rest, styled by .ui-tooltip.
- `<progress>` and `<meter>`.
- Atlases take rows and number cells, and importing ludic.ui/render3d.ludic is enough to draw with
  render3d.
- The compiler reports two declarations of one name before it type-checks, so a package global
  clashing with a program's reads as that, not as 29 type errors.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Orkun ÇAKILKAYA 2026-09-24 17:41:02 +03:00
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@ -446,14 +446,20 @@ applies to both:
Each reports with `on-change` and `event.value`, and plays `sound="..."` (or "click") through
the program's `ui_sounds`.
- **Popovers, tooltips and bars.**
- `<div popover on-close="...">` sits absolutely in its parent and draws on the top layer. While
it is up, the pointer and Tab stay inside it, and a press outside it or Esc closes it.
- `title="..."` shows a tooltip (`.ui-tooltip`) after the pointer rests for half a second.
- `<progress value max>` and `<meter value min max>` fill (`.ui-fill`) as far as their value.
- **Natives** are for what markup cannot say. `ui_native("minimap", measure, draw)` makes
`<minimap>` an element the program draws itself, laid out and styled like any other. It reports
with `ui_fire(n, "change", value)` and reads its attributes with `ui_attr` / `ui_attr_on`.
- **Renderers.** `ui_backend(b)` takes any renderer with `rect`, `text` and `measure`, and uses
`round`, `ring`, `image`, `nine`, `clip`, `scale` and `now` when it has them.
`import "ludic.ui/render3d.ludic"` and `ui_render3d()` draw with render3d's overlay:
- images by path, cells of an atlas named with `ui_atlas(prefix, texture, cols, names)` as
`<img src="prefix:name">`, and nine-slices for `border-image`;
Importing `ludic.ui/render3d.ludic` makes render3d's overlay the renderer:
- images by path, and cells of an atlas named with `ui_atlas(prefix, texture, cols, rows,
names)` as `<img src="prefix:name">` (or `prefix:12`);
- nine-slices for `border-image`;
- a scale from the screen's height (`ui_render3d_scale` for the player's interface size).
`ui_translator(fn)`, `ui_sounds(fn)` and `ui_clock(fn)` hand the runtime the program's