feat(cli): move XLE app components to experimental.xle.components config

[ejhammond]

Summary

Moves XLE app-component registration into the validated Astryx config under a new experimental.xle.components field, replacing the previous unvalidated raw-read of layout.components.

Authors register app-local components so XLE layout expressions can reference them by name via {hint}:

export default {
  experimental: {
    xle: {
      components: {
        KpiCard: {from: '@/components/KpiCard'},
      },
    },
  },
};

{kpi-card} then expands to import {KpiCard} from '@/components/KpiCard' and <KpiCard />.

What changed

• Types: added experimental.xle.components (Record<string, XleComponent>) to AstryxConfig, plus an exported XleComponent interface ({ from, description?, default? }).
• Schema: added a strict XleComponentSchema and the experimental.xle.components branch to the strict config schema. Unknown keys still error; the component shape is object-only (the old string shorthand now throws).
• Loader: loadConfig passes experimental through.
• XLE: removed the raw-read shim (and its special "config directly in cwd first" lookup). XLE now reads components via loadConfig, using the same standard sibling-of-nearest-package.json resolution as the rest of the CLI.
• Updated layout grammar help text to document the new config shape.

Tests

• Migrated the app-component bridge test to the new experimental.xle.components object shape.
• Added config tests: valid passthrough; strict rejection of unknown keys under experimental / experimental.xle / a component; and the string shorthand now throwing.

Full CLI suite green (1560 tests).

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Project	Deployment	Actions	Updated (UTC)
astryx	Ready	Preview, Comment	Jun 30, 2026 12:11pm

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No new or modified components detected.

Bundle Size Summary

Package	Size (ESM)	Size (CJS)	Gzipped
@astryxdesign/core	N/A	4.6KB	0B

Accessibility Audit

Status: No accessibility violations detected.

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