fix: support namespace imports in @renders validation

[ArthurGoupil]

Problem

Components accessed through namespace imports (import * as Nav from './barrel') were not validated by @renders annotations. For example:

import * as Nav from './components';

// Sidebar has @renders* {NavItem} on children
// This was NOT validated — any child was accepted
<Nav.Sidebar>
  <div /> {/* Should error but didn't */}
</Nav.Sidebar>

Similarly, valid-renders-jsdoc didn't catch typos in namespace member references:

import * as Nav from './components';
/** @renders {Nav.NavItme} */ // Typo — should error but didn't

Root Cause

Three separate issues:

1. getExternalPropAnnotations used typeChecker.resolveName() with dotted names like "Nav.Sidebar", but resolveName only handles simple identifiers → returned null → no validation.

2. collectImports didn't enumerate namespace import members, so the render chain map missed entries like "Nav.NavItems" → chain resolution failed.

3. valid-renders-jsdoc (isComponentAvailable) short-circuited on dotted names by only checking if the base namespace was imported → typos in member names went undetected.

Fix

• getExternalPropAnnotations: Split dotted names on ".", resolve base with resolveName, then traverse member properties (same pattern already used by getComponentTypeId).
• collectImports: Enumerate exported members of namespace imports as "NS.Member" entries.
• buildResolvedRenderMap: Handle dotted local names when resolving imported symbols for target type IDs.
• valid-renders-jsdoc: For dotted names, use getComponentTypeId (full member resolution) instead of just checking the base name.

Tests

Added 6 new test cases:

• valid-render-prop-cross-file: 2 valid + 2 invalid cases for namespace imports
• valid-renders-jsdoc-cross-file (new file): 1 valid + 1 invalid case for namespace member resolution
• New fixture: namespace-barrel.ts (re-exports via export * from)

All 428 tests pass (422 existing + 6 new).

[ArthurGoupil]

This was AI assisted, tbh I'm not 100% sure of the quality.

[HorusGoul]

ohh nice fix!