v2 ran every demo under a hard-coded `ltr` + `rtl` matrix. v3 lets each
demo declare which additional axes it honours — `orientation`, `disabled`,
`readonly`, `invalid`, `loading` — and the runner adds ONE variant per
declared axis (axis-at-a-time, not cartesian, so the matrix stays bounded
at O(N) instead of O(2^N)).
## Convention
```svelte
<svelte:head>
<meta name="perm-axes" content="dir,orientation,disabled" />
</svelte:head>
```
`dir` is universal (always runs). The other axes are opt-in: they only
produce variants when the demo both lists them in the meta AND wires the
corresponding state from `Perms.getOr(...)`. Without the meta, only
`ltr` + `rtl` run.
## Runner changes
- New `discoverAxes(base, morfoKebab)` pass: loads the baseline URL, reads
`<meta name="perm-axes">`, returns the declared axis list.
- `buildVariants(declaredAxes)` composes `ltr` + `rtl` + one `?perm.X=Y`
variant per declared axis from the `AXIS_FLIP` map.
- `[initial seed]` step validates morfo at each URL before any click,
so URL-seeded state alone is exercised (catches seed regressions even
when the click cycle never fires).
## Demo opt-in (this commit)
- `dialog` — `perm-axes="dir"` (no orientation / disabled / loading axes
apply to Dialog).
- `tabs` — `perm-axes="dir,orientation,disabled"` + wires `orientation` +
`disabled` to the first `Tabs.Provider`.
- `toolbar` — `perm-axes="dir,orientation"` + wires `orientation` to the
first `Toolbar.Provider`.
Result: 3 demos, 9 URL variants, 34 step validations per CI run
(v2 was 22 steps across 6 variants).
## Docs
`src/uix/morfo/PERMUTATION_RUNNER.md` v3 section: supported axis table,
3-step opt-in recipe, roadmap updated (v4 = morfo-inferred value cycling,
v5 = MutationObserver ordering for Sema).
## Verification
- `npm run check`: 0 errors in soma/morfo/test-route scope.
- `npm run smoke`: 65/65 routes.
- `npm run morfo:check`: 66/66 morfos.
- `npm run perm:check`: 3/3 demos · 34 steps · 9 variants.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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