Parse import X from './path.van' statements from a script setup block.
Supports both relative paths (./foo.van, ../bar.van) and scoped packages (@scope/pkg/file.van).
Parse non-.van imports from a script setup block.
Returns imports from .ts, .js, .tsx, .jsx files.
Supports both relative paths and scoped packages (@scope/pkg/file.ts).
Excludes: .van imports (handled by parse_imports), bare module imports like ‘vue’.